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Academic literature on the topic 'Boreholes'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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Journal articles on the topic "Boreholes"

1

Eyre, Natalie S., Antony J. Payne, Duncan J. Baldwin, and Helgi Björnsson. "The use of salt injection and conductivity monitoring to infer near-margin hydrological conditions on Vestari-Hagafellsjökull, Iceland." Annals of Glaciology 40 (2005): 83–88. http://dx.doi.org/10.3189/172756405781813410.

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AbstractVestari-Hagafellsjökull is a surge-type outlet glacier from the Langjökull ice cap, Iceland. Intensive hydrological investigations were carried out during non-surge conditions in the summers of 1999 and 2000, and 14 boreholes were drilled using pressurized hot water over an area 800 m from the margin and approximately 5000 m2 in size, where ice thickness ranged from 60 to 70 m. Initial investigations showed that a large fraction of the boreholes drilled to the bed did not drain and were assumed not to connect to the subglacial drainage system. Subsequently, we investigated the hypothesis that boreholes which remain full may do so as a consequence of a balance between englacial inflow and basal drainage rather than the standard assumption that such boreholes are simply unconnected. In testing this hypothesis, we developed a new technique for measuring water motion within the borehole by monitoring the passage of a saline solution down the borehole’s water column. The technique allows rates of motion to be established, as well as allowing the quantification of net addition and loss of water from the borehole. Observations based on the motion of saline plumes within the boreholes lead us to the conclusion that some boreholes do indeed remain full as a consequence of a balance between englacial inflow and subglacial drainage. The abrupt dilution that occurs at the top of these boreholes suggests inflow from a near-surface englacial water source, while the descent of the saline plumes implies that water is being lost at the base to the subglacial system. The system appears to be driven by excess water head in the boreholes over flotation and implies that the borehole/bedrock interface can be ‘leaky’.

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Chen, Yuxin, Yunhong Ding, Chong Liang, Dawei Zhu, Yu Bai, and Chunmei Zou. "An Analytical Model for Fracture Initiation from a Particular Radial Borehole in Hydraulic Fracturing Guided by Multiradial Boreholes." Geofluids 2021 (February 11, 2021): 1–18. http://dx.doi.org/10.1155/2021/6657788.

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Radial drilling-fracturing, the combination of the hydraulic fracturing and radial borehole, is a technology that can guide the hydraulic fractures to directionally propagate and efficiently develop low permeability reservoir. In this paper, an analytical model of two radial boreholes (a basic research unit) is established to predict fracture initiation pressure (FIP) from one particular radial borehole and the interference between radial boreholes when the hydraulic fracturing is guided by multi-radial boreholes. The model is based on the stress superposition principle and the maximum tensile stress criterion. The effects of in situ stress, wellbore pressure, and fracturing fluid percolation are considered. Then, sensitivity analysis is performed by examining the impact of the intersection angle between radial boreholes, the depth difference between radial boreholes, the radius of radial boreholes, Biot coefficient, and the number of radial boreholes. The results show that FIP declines with the increase of radial boreholes number and the decrease of intersection angle and depth difference between radial boreholes. Meanwhile, the increase of radial borehole number and the reduction of intersection angle and depth difference strengthen the interference between radial boreholes, which conduce to the formation of the fracture network connecting radial boreholes. Besides, FIP declines with the increase of radial borehole radius and the decrease of Biot coefficient. Large radius and low Biot coefficient can enlarge the influence range of additional stress field produced by radial boreholes, enhance the mutual interference between radial boreholes, and guide fracture growth between radial boreholes. In hydraulic fracturing design, in order to reduce FIP and strengthen the interference between radial boreholes, the optimization design can be carried out by lowering intersection angle, increasing radius and number of boreholes, and reducing the depth difference between boreholes when the conditions permit. The research clarifies the interference between radial boreholes and provides the theoretical basis for optimizing radial boreholes layout in hydraulic fracturing guided by multi-radial boreholes.

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Sliwa, Tomasz, Aneta Sapińska-Śliwa, Andrzej Gonet, Tomasz Kowalski, and Anna Sojczyńska. "Geothermal Boreholes in Poland—Overview of the Current State of Knowledge." Energies 14, no. 11 (June 2, 2021): 3251. http://dx.doi.org/10.3390/en14113251.

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Geothermal energy can be useful after extraction from geothermal wells, borehole heat exchangers and/or natural sources. Types of geothermal boreholes are geothermal wells (for geothermal water production and injection) and borehole heat exchangers (for heat exchange with the ground without mass transfer). The purpose of geothermal production wells is to harvest the geothermal water present in the aquifer. They often involve a pumping chamber. Geothermal injection wells are used for injecting back the produced geothermal water into the aquifer, having harvested the energy contained within. The paper presents the parameters of geothermal boreholes in Poland (geothermal wells and borehole heat exchangers). The definitions of geothermal boreholes, geothermal wells and borehole heat exchangers were ordered. The dates of construction, depth, purposes, spatial orientation, materials used in the construction of geothermal boreholes for casing pipes, method of water production and type of closure for the boreholes are presented. Additionally, production boreholes are presented along with their efficiency and the temperature of produced water measured at the head. Borehole heat exchangers of different designs are presented in the paper. Only 19 boreholes were created at the Laboratory of Geoenergetics at the Faculty of Drilling, Oil and Gas, AGH University of Science and Technology in Krakow; however, it is a globally unique collection of borehole heat exchangers, each of which has a different design for identical geological conditions: heat exchanger pipe configuration, seal/filling and shank spacing are variable. Using these boreholes, the operating parameters for different designs are tested. The laboratory system is also used to provide heat and cold for two university buildings. Two coefficients, which separately characterize geothermal boreholes (wells and borehole heat exchangers) are described in the paper.

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Fudge, T. J., Neil F. Humphrey, Joel T. Harper, and W. Tad Pfeffer. "Diurnal fluctuations in borehole water levels: configuration of the drainage system beneath Bench Glacier, Alaska, USA." Journal of Glaciology 54, no. 185 (2008): 297–306. http://dx.doi.org/10.3189/002214308784886072.

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AbstractWater levels were measured in boreholes spaced along the entire length of Bench Glacier, Alaska, USA, for a period in excess of 2 years. Instrumented boreholes were arranged as nine pairs along the center line of the glacier and an orthogonal grid of 16 boreholes in a 3600 m2 region at the center of the ablation area. Diurnal fluctuations of the water levels were found to be restricted to the late melt season. Pairs of boreholes spaced along the length of the ablation area often exhibited similar fluctuations and diurnal changes in water levels. Three distinct and independent types of diurnal fluctuations in water level were observed in clusters of boreholes within the grid of boreholes. Head gradients suggest water did not flow between clusters, and a single tunnel connecting the boreholes could not explain the observed pattern of diurnal water-level fluctuations. Inter-borehole and borehole-cluster connectivity suggests the cross-glacier width of influence of a segment of the drainage system connected to a borehole was limited to tens of meters. A drainage configuration whereby boreholes are connected to a somewhat distant tunnel by drainage pipes of differing lengths, often hundreds of meters, is shown with a numerical test to be a plausible explanation for the observed borehole behavior.

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Morin, Roger H., Guillaume E. Descamps, and L. DeWayne Cecil. "Acoustic televiewer logging in glacier boreholes." Journal of Glaciology 46, no. 155 (2000): 695–99. http://dx.doi.org/10.3189/172756500781832684.

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AbstractThe acoustic televiewer is a geophysical logging instrument that is deployed in a water-filled borehole and operated while trolling. It generates a digital, magnetically oriented image of the borehole wall that is developed from the amplitudes and transit times of acoustic waves emitted from the tool and reflected at the water–wall interface. The transit-time data are also converted to radial distances, from which cross-sectional views of the borehole shape can be constructed. Because the televiewer is equipped with both a three-component magnetometer and a two-component inclinometer, the borehole’s trajectory in space is continuously recorded as well. This instrument is routinely used in mining and hydrogeologic applications, but in this investigation it was deployed in two boreholes drilled into Upper Fremont Glacier, Wyoming, U.S.A. The acoustic images recorded in this glacial setting are not as clear as those typically obtained in rocks, due to a lower reflection coefficient for water and ice than for water and rock. Results indicate that the depth and orientation of features intersecting the boreholes can be determined, but that interpreting their physical nature is problematic and requires corroborating information from inspection of cores. Nevertheless, these data can provide some insight into englacial structural characteristics. Additional information derived from the cross-sectional geometry of the borehole, as well as from its trajectory, may also be useful in studies concerned with stress patterns and deformation processes.

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Doetsch, Joseph A., Ilaria Coscia, Stewart Greenhalgh, Niklas Linde, Alan Green, and Thomas Günther. "The borehole-fluid effect in electrical resistivity imaging." GEOPHYSICS 75, no. 4 (July 2010): F107—F114. http://dx.doi.org/10.1190/1.3467824.

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Fluid that fills boreholes in crosswell electrical resistivity investigations provides the necessary electrical contact between the electrodes and the rock formation but it is also the source of image artifacts in standard inversions that do not account for the effects of the boreholes. The image distortions can be severe for large resistivity contrasts between the rock formation and borehole fluid and for large borehole diameters. We have carried out 3D finite-element modeling using an unstructured-grid approach to quantify the magnitude of borehole effects for different resistivity contrasts, borehole diameters, and electrode configurations. Relatively common resistivity contrasts of 100:1 and borehole diameters of 10 and [Formula: see text] yielded, for a bipole length of [Formula: see text], apparent resistivity underestimates of approximately 12% and 32% when using AB-MN configurations and apparent resistivity overestimates of approximately 24% and 95% when usingAM-BN configurations. Effects are generally more severe at shorter bipole spacings. We report the results obtained by either including or ignoring the boreholes in inversions of 3D field data from a test site in Switzerland, where approximately 10,000 crosswell resistivity-tomography measurements were made across six acquisition planes among four boreholes. Inversions of raw data that ignored the boreholes filled with low-resistivity fluid paradoxically produced high-resistivity artifacts around the boreholes. Including correction factors based on the modeling results for a 1D model with and without the boreholes did not markedly improve the images. The only satisfactory approach was to use a 3D inversion code that explicitly incorporated the boreholes in the actual inversion. This new approach yielded an electrical resistivity image that was devoid of artifacts around the boreholes and that correlated well with coincident crosswell radar images.

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Zhang, Heng, Tie Li, Zhenhua Ouyang, Su Liu, and Haiyang Yi. "Research on Optimization of Coal Pressure Relief Borehole Parameters under High-Stress Conditions." Geofluids 2021 (August 31, 2021): 1–13. http://dx.doi.org/10.1155/2021/4673152.

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Determining the parameters of boreholes drilled for relieving pressure in coal seams is the key preventing and controlling rock bursts in boreholes of large diameter. In this study, theoretical analysis, numerical simulation, literature research, and other analysis methods are applied to study the angles of elastic energy dissipation and stress transfer, the distribution law of the pressure relief area, and the areas of stress concentration, energy, stress, displacement, and plastic behavior of large-diameter pressure relief boreholes in coal seams under high-stress conditions. The results are then used to evaluate the relationship between large-diameter pressure relief boreholes and the borehole arrangement. The following results are obtained. (1) A large-diameter results in a large amount of elastic energy released by the surrounding coal, low residual elastic energy density, strong interaction between boreholes, large pressure relief range of the borehole, and high pressure relief efficiency. (2) The main evaluation factor of the borehole pressure relief effect is its thickness and stress concentration area; secondary evaluation is based on the areas of energy, displacement, stress, and plastic behavior. (3) Six evaluation index systems are established to evaluate the effects of borehole pressure relief, which are found to be the thicknesses of the borehole pressure relief area and stress concentration area, reduction degree of energy density, percentage of stress reduction, displacement, and penetration degree of the plastic area. (4) It is determined that when the diameters of the pressure relief boreholes are 100, 120, 180, and 200 mm, a single-row borehole arrangement is adopted; a three-pattern borehole arrangement is adopted with diameters of 140 and 160 mm. These research results can provide theoretical support in selecting reasonable borehole arrangements for pressure relief boreholes of different diameters.

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Ademola, Iroye Kayode. "Effect of Down-Hole Lithological Variation on Water Bearing Capacity of Some Boreholes in Ilorin, Nigeria." Studia Universitatis Babeș-Bolyai Geographia 66, no. 2 (December 30, 2021): 5–23. http://dx.doi.org/10.24193/subbgeogr.2021.2.01.

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"Effect of Down-Hole Lithological Variation on Water Bearing Capacity of Some Boreholes in Ilorin, Nigeria. The paper attempts to explain the effect of downhole lithological variation on water bearing capacity of some boreholes in Ilorin Nigeria. Specifically, the study examined the lithological characteristics of the boreholes, assessed the variability in weathered overburden and analyzed the inter-relationships between lithology, hydrology and topography of the boreholes. Data used were extracted from twenty (20) borehole logs collected from the archive of Lower Niger Basin Development Authority in Ilorin. Information extracted from the borehole logs are: the number of lithological units intersected by each of the borehole and their depths, the nature of geological materials making up the lithological units and their moisture conditions. Information on coordinates and topographic heights of the boreholes are not given on the logs and those were collected from the field personally by the researcher using handheld GPS (Garmin GPS Channel 76 Model). The collected data were analyzed using descriptive statistics. Results reveal nine downhole lithological units with loamy and lateritic soil making up the first layer of lithology in 95% of the boreholes. Thickness of the top soil and the saprolite overlying the bedrock, has mean values of 4.2m and 11.3m respectively. Depth to water in the borehole ranged between 24.7 and 140m and with a mean value of 55.9m. Three (3) of the boreholes have two lenses of aquifer while the remaining seventeen (17) have one aquifer lens each. The three (3) boreholes with two aquifer lenses have their minor aquifers located within the saprolite. The main aquifer in most (65%) of the boreholes is located within the fractured basement while the remaining (35%) boreholes have their main aquifer located in the weathered basement. Correlation analysis revealed topographic elevation as one of the drivers of hydrology in the study area. Keywords: lithology, groundwater, saprolite, basement, topography. "

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Melnikov, R. V., and Y. A. Pronozin. "VERTICALITY OF BOREHOLES." Construction and Geotechnics 12, no. 3 (December 15, 2021): 94–104. http://dx.doi.org/10.15593/2224-9826/2021.3.10.

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The study contains the problem of the borehole shape of during drilling. Usage of a drilling bit and tubular or screw rods is traditional and most common drilling methods. The requirement of "verticality" for boreholes in the drilling process is necessary to comply with design solutions and design schemes. At the same time, the actual implementation of this important quality is often very difficult. An analysis of the regulatory documentation is carried out to ensure the requirement during conducting geotechnical investigations, and during installing pile foundations made in the ground: bored piles and continuous flight auger piles (CFA). Data about the researchers in the field of assessing of bending of the pile axis are presented for CFA piles. The article presents the results of field studies of the borehole verticality at two investigation sites. At the first site, a borehole was drilled with a depth of 9.0 m, at the second site, ten boreholes were drilled with a depth of 25.0 m. The spatial position of the boreholes was determined by an inclinometer. The results of the measured verticality deviations of the boreholes are presented on the spatial graph for clear visibility. A conclusion is made about the influence of the borehole shape on its vertical projection during conducting of geotechnical investigations. A series of comparative numerical calculations was performed using the Midas GTS NX program to assess the effect of the verticality deviations of the boreholes during installing bored piles on their bearing capacity. A single pile action in the ground was simulated for the pressing and pulling loads. It is concluded that the shape of the borehole influences on the single pile action in the ground.

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Feng, Renjun. "Influence of Long Boreholes Layout and Drilling Length on Gas Drainage Based on Multifield Coupling Model of Gas-Bearing Coal." Advances in Civil Engineering 2021 (November 17, 2021): 1–16. http://dx.doi.org/10.1155/2021/1473769.

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Gas drainage through long seam boreholes is an effective method to prevent gas disasters in coal mines. In this paper, a multifield coupling model of gas migration in gas-bearing coal was first established. Then, a quantitative characterization method of gas drainage effect was put forward. Finally, the extraction effect of long boreholes was obtained under different layouts and drilling lengths. The research results show that, under the arrangement of long boreholes along the seam, the gas pressure around the borehole decreases significantly with the extraction time. There is no extraction blank in the middle of the working face. However, it is easy to cause uneven gas drainage in the combined arrangement of the long boreholes along the seam and the penetrating boreholes. Furthermore, it is found that the drainage volume of the long boreholes along the seam is similar to that of the joint layout under the same drainage time. As the length of the borehole increases, the influencing range of gas drainage increases. When the borehole lengths are 150 m and 240 m, the drainage volumes are about 1.31 and 2.50 times that of the 90 m boreholes, respectively. The research achievements could provide a specific reference for the layout of long boreholes along the bedding and the determination of reasonable parameters for gas drainage on site.

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Dissertations / Theses on the topic "Boreholes"

1

Dunn, Paul Gregory. "Fluid drainage into boreholes within coal seams /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17776.pdf.

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Zhou, Tiepeng. "Seismic wave propagation in and around boreholes." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/58056.

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Hughes, Simon. "Geohydrology data model design : South African boreholes." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/2799.

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Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2005.
Since mechanised borehole drilling began in South Africa in the late 1800s, over 1 100 000 boreholes have been drilled. As the country’s growing population and the perceived impacts of climate change increase pressure on water surface supplies, attention is turning to groundwater to meet the shortfall in water supply. This will mean even more drilling will take place. Until the introduction of the Standard Descriptors for Boreholes, published in 2003, South Africa has not had a set of guidelines for borehole information capture. This document provides a detailed description of the basic information requirements needed to describe and characterise the process of drilling, constructing, developing, managing and monitoring a borehole. However, this document stands alone as a specification with little or no implementation or interpretation to date. Following the development and publishing of the ArcHydro data model for water resource management by the CRWR based at the University of Texas at Austin, there has been a great deal of interest in object-oriented data modelling for natural resource data management. This thesis describes the utilisation of an object oriented data modelling approach using UML CASE tools to design a data model for South African Boreholes, based on the Standard Descriptors for Boreholes. The data model was converted to a geodatabase schema and implemented in ArcGIS.

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Sizer, Calvin Gregory. "Minor actinide waste disposal in deep geological boreholes." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41595.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2006.
Includes bibliographical references (leaves 63-65).
The purpose of this investigation was to evaluate a waste canister design suitable for the disposal of vitrified minor actinide waste in deep geological boreholes using conventional oil/gas/geothermal drilling technology. The nature of minor actinide waste was considered, paying particular attention to nuclides whose decay energy and half lives were of relative significance to the minor actinide waste as a whole. Thermal Analysis was performed based on a reference borehole design, by Ian C. Hoag. The strategy of the thermal analysis is aimed at finding peak temperatures within the configuration, paying particular attention to the heat transfer under deep geological conditions in the air gap between the canister and the borehole. A first order economic analysis was made to compare the designed canister emplacement costs to that of intact spent fuel. The results of this analysis show that three minor actinide nuclides dominate heat generation after ten years cooling: Cm-244, Am-241, and Am-243 account for 97.5% of minor actinide decay heat. These three nuclides plus Np-237 account for 99% of the minor actinide mass. The thermal analysis was based on an irretrievable canister design, consisting of a 5 meter long synroc waste form, with minor actinides loaded to 1% wt, an outer radius of 15.8 cm and inner annular radius of 8.5 cm. Filling the annulus with a vitrified technetium and iodine waste form was found to be feasible using a multi-stage emplacement process. This process would only be required for three of the fifty boreholes because technetium and iodine have low heat generations after 10 years cooling. The suggested borehole waste form has a maximum centerline temperature of 349C. The costs of drilling boreholes to meet the demand of 100,000MT of PWR waste are estimated to be 3.5% of the current nuclear waste fund, or about $9.6/kg of original spent fuel.
by Calvin Gregory Sizer.
S.B.

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Lee, Hyun Yup. "Drillstring axial vibration and wave propagation in boreholes." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13907.

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Rama, Rao V. N. "Acoustic transmission through fluid-filled pipes in boreholes." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13427.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
by Rama Rao V.N.
M.S.

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Fallahzadeh, Abarghooei Syed Hassan. "Simulations of hydraulic fracturing initiation in perforated boreholes." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/1332.

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The mechanism of initiation and propagation of hydraulic fracture from cased hole perforated wellbores is investigated through analytical, numerical and experimental studies. A new model was developed for arbitrarily oriented wellbore and perforation to predict the fracture initiation pressure, location and orientation, along the perforation length. In addition, scaled experimental and numerical studies were carried out to validate the analytical model and to investigate the effects of fluid viscosity and injection rate on fracture geometry.

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Appleby, Susan. "Macroscopic stress analysis and microscopic continuum modelling for porous and non porous elastic solids." Thesis, Imperial College London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284319.

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Adaiem, Miloud H. "Wellbore integrity in shale strata." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=165843.

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Air drilling is limited to competent formations that are essentially dry. In these circumstances large shale fragments are often observed and it is believed that these large shale fragments are not from the cutting action of drill bit at the bottom of the hole but from caving in, or sloughing of the wellbore wall. This type of wellbore instability problems may occur when drilling formations have significant amounts of water-sensitive clays. Change in shale water content due to water dehydration induces additional rock stresses near the wellbore, which can destabilize the borehole. The primary cause of this problem may well relate to moisture movement. Because as air is often used as the drilling fluid, the water in exposed pores will start to evaporate into the borehole, so that the water content is reduced. This results in the development of different stress patterns and the shale fractures and falls into the wellbore. The work of this thesis simulates the shrinkage and the consequent cracking pattern. A model of a bonded granular material is created and its properties confirm it to be that of a brittle, isotropic elastic solid. Crack growth is simulated by sequentially removing the most highly stressed bond in turn. A number of different geometries are simulated and the influence of stochastic bond strength on the cracking pattern is investigated. The model results show that cracking pattern produced in the simulations is consistent with the ‘blocky’ debris sometimes seen during air drilling and so the recommendation is made that air used for drilling should be sufficiently humid to avoid the dehydration of the shale.

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Long, P. J. G. "Experimental studies of fluid-fluid displacement in annuli." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386649.

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Books on the topic "Boreholes"

1

Paillet, F. L. Acoustic waves in boreholes. Boca Raton: CRC Press, 1991.

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Stockinger, Georg Maximilian. Fracturing in Deep Boreholes. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5.

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Misstear, Bruce, David Banks, and Lewis Clark. Water Wells and Boreholes. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470031344.

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Misstear, Bruce, David Banks, and Lewis Clark. Water Wells and Boreholes. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119080176.

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Water wells and boreholes. Chichester, UK: John Wiley & Sons, 2005.

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The field guide to water wells and boreholes. Milton Keynes, England: Open University Press, 1988.

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Epov, M. I. VIKIZ Method for Logging Oil and Gas Boreholes. Novosibirsk: Publishing House of the SB RAS Branch "Geo", 2002.

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Fuenkajorn, K., and J. J. K. Daemen, eds. Sealing of Boreholes and Underground Excavations in Rock. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1505-3.

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9

Goodman, Tobias W. Comparisons between cross-measure boreholes and surface gob holes. Pittsburg, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1986.

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Lyons, William C. Air and gas drilling manual: Engineering applications for water wells, monitoring wells, mining boreholes, geotechnical boreholes, and oil and gas recovery wells. 2nd ed. New York: McGraw-Hill, 2001.

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Book chapters on the topic "Boreholes"

1

Gaaloul, Noureddine, Saeid Eslamian, and Kaveh Ostad-Ali-Askari. "Boreholes." In Encyclopedia of Earth Sciences Series, 1–6. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_31-1.

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Gaaloul, Noureddine, Saeid Eslamian, and Kaveh Ostad-Ali-Askari. "Boreholes." In Encyclopedia of Earth Sciences Series, 68–73. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_31.

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Galperin, E. I., I. L. Nersesov, and R. M. Galperina. "Noise in Boreholes." In Borehole Seismology and the Study of the Seismic Regime of Large Industrial Centres, 21–45. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4510-4_2.

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Galperin, E. I., I. L. Nersesov, and R. M. Galperina. "Seismological Observations in Boreholes." In Borehole Seismology and the Study of the Seismic Regime of Large Industrial Centres, 46–84. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4510-4_3.

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Stockinger, Georg Maximilian. "Results." In Fracturing in Deep Boreholes, 103–91. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_5.

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Stockinger, Georg Maximilian. "Conclusions, Implementation and Outlook." In Fracturing in Deep Boreholes, 233–41. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_7.

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Stockinger, Georg Maximilian. "The BMWi Project “Dolomitkluft” and the Study Site." In Fracturing in Deep Boreholes, 45–62. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_3.

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Stockinger, Georg Maximilian. "Discussion." In Fracturing in Deep Boreholes, 193–232. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_6.

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Stockinger, Georg Maximilian. "Introduction." In Fracturing in Deep Boreholes, 1–19. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_1.

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Stockinger, Georg Maximilian. "Rock Mechanical Basics." In Fracturing in Deep Boreholes, 21–44. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94569-5_2.

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Conference papers on the topic "Boreholes"

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Simmat, C. M., N. Osman, J. E. Hargreaves, and I. M. Mason. "Borehole radar imaging from deviating boreholes." In Ninth International Conference on Ground Penetrating Radar (GPR2002), edited by Steven Koppenjan and Hua Lee. SPIE, 2002. http://dx.doi.org/10.1117/12.462207.

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Eslami-Nejad, Parham, Mohamed Ouzzane, and Zine Aidoun. "CO2-Filled Vertical Geothermal Boreholes: Modeling and Application." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64643.

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In the context of extremely cold or hot climates, ground coupled heat pumps offer several environmental and energy efficiency advantages over conventional methods for heating and cooling of buildings and they are increasingly used in most near-zero and net-zero energy buildings. However, the high initial cost of the ground loop portion (geothermal boreholes) has often raised the question on the economical competitiveness of the system. In the present study, a geothermal borehole is proposed in which two-phase carbon dioxide (mixture of liquid and vapor) exchanges heat with the ground to improve the thermal performance of the borehole and thus to reduce borehole length. Carbon dioxide shows several cost and environmental advantages. Moreover, it offers superior thermophysical properties and heat transfer characteristics. A numerical model has been developed to study the complex thermal behavior of a two-phase CO2-filled vertical geothermal borehole. The model can handle both two-phase and single-phase conditions along the borehole length. An explicit solution for fully coupled conservation equations of mass, momentum and energy as well as an equation of state are applied. The model accounts for the thermal interaction among the pipes and it predicts the fluid temperature, pressure and two-phase quality profiles. It is used to assess the thermal performance of the CO2-filled secondary loop geothermal borehole operating in heating mode. Results indicate that the proposed borehole offers superior performance due to the relatively high two-phase heat transfer characteristics of CO2.

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Cosentino, Sara, Adriano Sciacovelli, and Vittorio Verda. "Optimal Operation of Small Geothermal Systems Through Entropy Generation Analysis." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20493.

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Geothermal systems often experience non homogeneous behavior between the various boreholes, due to possible issues in the installation or to differences in the stratigraphy. In the case of small systems, this may create important inefficiencies or operational problems. In this paper, the use of entropy generation analysis is proposed in order to optimize the global performances, taking fluid dynamic and thermal phenomena into account. The possible anomalous scenarios that are considered include borehole ovalization and differences in the heat transfer between borehole and ground due to fouling, groundwater level, etc. The analysis is conducted considering a transient model of the entire system, composed by the ground, boreholes and heat pump. Various operating scenarios are also considered. Results show that non negligible improvements in the efficiency can be obtained by proper selection of the operating conditions.

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Gaspredes, Jonathan L., Glenn Y. Masada, and Tess J. Moon. "Effects of Ground Loop Design Parameters on Short- and Long-Term Operational and Economics of Ground Source Heat Pumps in Hot, Semi-Arid Areas." In ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/es2012-91311.

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Deployment of ground source heat pumps in Texas and the Southwest has been limited by high initial cost and potential ground heating. To address these limitations for a residential application a sensitivity study of the ground loop design parameters was completed. The study uses an integrated building load-ground source heat pump model that is designed to be a test bed for assessing the short- and long-term performance of GSHPs. This study examines a 195 m2 residential house located in Austin, Texas with a 14.6 kW heat pump and 4 vertical boreholes each with a length of 68.5 m. The performance effects and the long-term economics of the total ground loop length, spacing of the boreholes, placement of the boreholes, grout thermal conductivity, and supplemental heat rejector sizes are compared. The study shows the importance of proper sizing, design, and placement of the borehole in locations with severely unbalanced heating and cooling loads.

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Cosentino, Sara, Adriano Sciacovelli, and Vittorio Verda. "Thermoeconomic Design of Borehole Thermal Energy Storage Systems." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52051.

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Borehole thermal energy storage (BTES) is an option to provide large-scale seasonal storage of cold and heat in natural underground sites. Boreholes are used to transfer heat from the working fluid to the ground in charging phase and vice versa in discharging. The design of boreholes influences system efficiency, installation costs and the charging time required to reach the design temperature in the ground. The latter can result too long but may be reduced significantly through the selection of an optimal design and a storage temperature that maximizes the efficiency. Nevertheless high performances are usually accompanied by high purchase and installation costs of the borehole exchangers. The increase in efficiency and the decrease of investment costs are two conflicting objectives that must be considered in the design stage to select the best configuration. This work is focused on the optimal configuration of BTES in which the boreholes are used to charge the ground to the design temperature and to supply the thermal energy demand during the operation. Several designs are explored at two different levels of temperature in the storage. A novel design strategy, based on energy, exergy and thermoeconomic analysis, is proposed to select the optimal configuration that guarantees a balance between expenditure on capital costs and exergy efficiency. This constitutes a novel approach which ensures high performances of BTES systems for long periods of operation, which is an interesting area of research that is currently not sufficiently explored.

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Desroches, Jean, Emilie Peyret, Adriaan Gisolf, Ailsa Wilcox, Mauro Di Giovanni, Aernout Schram de Jong, Siavash Sepehri, Rodney Garrard, and Silvio Giger. "STRESS MEASUREMENT CAMPAIGN IN SCIENTIFIC DEEP BOREHOLES: FOCUS ON TOOL AND METHODS." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0056.

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As part of the Sectoral Plan for Deep Geological Repositories, three candidate sites are currently examined by a focused geological exploration program in Northeastern Switzerland. The program involves 3D seismic surveys and drilling of at least two deep boreholes at each site. Stress testing is being undertaken with a wireline formation testing tool in each borehole (around 20 stress tests per borehole). Improvements in the toolstring were introduced step by step to sharpen the range of the stress estimates and enable 100% coverage of the desired lithological column. This is the first time that a single toolstring with three packers has been run to perform the complete combination of sleeve fracturing, hydraulic fracturing and sleeve reopening tests. A dedicated stress testing protocol was developed to ensure the most robust estimate of the stress in a large variety of formations. A detailed planning process has been developed to maximize the success rate and coverage of stress test stations, integrating all available information as it becomes available. A review of the techniques enabled by the new toolstring for estimating the closure stress from a stress test, especially in low-permeability formations, is presented, and detailed stress testing examples are provided. Preliminary comparison between the stress estimates for the first two boreholes in the campaign are shown.

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Marzetta, Thomas L., and Michael Schoenberg. "Tube waves in cased boreholes." In 1985 SEG Technical Program Expanded Abstracts. SEG, 1985. http://dx.doi.org/10.1190/1.1892647.

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Skalle, P., K. R. Backe, S. Lyomov, and J. Svven. "Barite Segregation In Inclined Boreholes." In Annual Technical Meeting. Petroleum Society of Canada, 1997. http://dx.doi.org/10.2118/97-76.

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Li, X., L. Cui, and J. C. Roegiers. "Thermoporoelastic Analyses of Inclined Boreholes." In SPE/ISRM Rock Mechanics in Petroleum Engineering. Society of Petroleum Engineers, 1998. http://dx.doi.org/10.2118/47296-ms.

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Moser, T. J., B. Arntsen, S. Johansen, E. B. Raknes, and S. Sangesland. "Seismic Diffraction Response from Boreholes." In 78th EAGE Conference and Exhibition 2016. Netherlands: EAGE Publications BV, 2016. http://dx.doi.org/10.3997/2214-4609.201600987.

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Reports on the topic "Boreholes"

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Brewer, K. D. Water level data from the Bells Corners Borehole Calibration Facility (2019-2021), Ottawa, Ontario. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330087.

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The Geological Survey of Canada's deep borehole test site at the Bells Corners Borehole Calibration Facility in Ottawa, Ontario, has been in use since the 1980's for the development and calibration of geophysical logging instrumentation. In more recent times, the need for monitored deep borehole sites in Canada is increasingly important for long-term research into groundwater flow through fractured bedrock, and surface to groundwater interaction. In 2019, the facility underwent repairs to reopen deep boreholes, replace surface casings, and install atmospheric monitoring equipment. This report documents new groundwater level datasets in three of the six boreholes in the well cluster from March 2019 to October 2021. The compilation also integrates rainfall and air temperature data from a rain gauge installed on the site which provides insight into the rapid response times of this fractured bedrock system. This new water level information augments the growing number of datasets supporting the ongoing study of hydrogeological conditions at the calibration facility.

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Horner, Jake A. Entry Boreholes Summary Report for the Waste Treatment Plant Seismic Boreholes Project. Office of Scientific and Technical Information (OSTI), February 2007. http://dx.doi.org/10.2172/912732.

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Difebbo, Thomas J. Borehole Summary Report for C4997 Rotary Drilling, WTP Seismic Boreholes Project, CY 2006. Office of Scientific and Technical Information (OSTI), February 2007. http://dx.doi.org/10.2172/912728.

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Barnett, D. BRENT, and Benjamin J. Garcia. Borehole Summary Report for Core Hole C4998 ? Waste Treatment Plant Seismic Boreholes Project. Office of Scientific and Technical Information (OSTI), December 2006. http://dx.doi.org/10.2172/899153.

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Pantze, R., l. Malmqvist, and G. Kristensson. Directional EM measurements in boreholes. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/123606.

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Olson, L. C., R. D. Knight, H L Crow, and H. A. J. Russell. Chemostratigraphic logging of the Lower Ordovician and Precambrian, Bells Corners borehole calibration facility, Ottawa, Ontario. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330519.

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Geochemical data were collected from a 120-meter-deep borehole (BC81-2) located at the Geological Survey of Canada's Bells Corners Borehole Calibration Facility in Ottawa, Ontario. This report documents geochemical data collected for the most frequently logged of the six boreholes located at the facility. The geochemical data were collected using a portable X-ray fluorescence (pXRF) spectrometer with a subset of samples collected for modern laboratory based fusion and multi-acid methods to calibrate the pXRF data for improved accuracy. Borehole geochemistry provides a characterization of Precambrian and overlying Ordovician rocks in the Ottawa area that augments the understanding of geophysical properties obtained from the calibration borehole. The combined geochemical and geophysical datasets further define rock characteristics, formational boundaries, as well as alteration zones. The results demonstrate the usefulness of pXRF derived geochemical data and chemostratigraphy of rock cores. The chemostratigraphic data augment data collected with spectral gamma logging tools and support an enhanced interpretation of geological contacts across transitional boundaries and the nature of the matrix mineralogy.

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Kuhlman, Kristopher L., Patrick Vane Brady, Robert J. MacKinnon, Jason E. Heath, Courtney G. Herrick, Richard P. Jensen, Mark J. Rigali, et al. Conceptual Design and Requirements for Characterization and Field Test Boreholes: Deep Borehole Field Test. Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1431319.

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Cinq-Mars, A., C. J. Mwenifumbo, and P. G. Killeen. Borehole geophysical logs from Lithoprobe Project boreholes at Les Mines Selbaie and Lac Matagami, Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/205046.

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Wadman, Heidi, and Jesse McNinch. Elevation of underlying basement rock, Ogdensburg Harbor, NY. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40843.

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Over six linear miles of shallow acoustic reflection geophysical data were collected in an 800 ft by 300 ft survey region at Ogdensburg Harbor, Ogdensburg, NY. To better accommodate modern commercial vessels and expand the harbor’s capacity, the current navigable depth of -19 ft Low Water Depth (LWD) needs to be increased to -28 ft LWD, and an accurate map of the nature of the riverbed material (e.g., unconsolidated sediment, partially indurated glacial till, or bedrock) is required to effectively plan for removal. A total of 28 boreholes were previously collected to map the stratigraphy, and the effort revealed significant spatial variability in unit thickness and elevation between adjacent boreholes. To accurately map this variable stratigraphy, chirp sub-bottom profiles were collected throughout the region, with an average line spacing of 13 ft. These sub-bottom data, validated and augmented by the borehole data, resulted in high-resolution spatial maps of stratigraphic elevation and thickness for the study area. The data will allow for more accurate assessment of the type and extent of different dredging efforts required to achieve a future uniform depth of -28 ft LWD for the navigable region.

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Wilt, M., K. H. Lee, A. Becker, B. Spies, and B. Wang. Crosshole EM in steel-cased boreholes. Office of Scientific and Technical Information (OSTI), July 1996. http://dx.doi.org/10.2172/461381.

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