Готові списки джерел за темами / Geomechanical restoration

Добірка наукової літератури з теми "Geomechanical restoration"

Автор: Grafiati
Опубліковано: 8 червня 2024

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Зміст

  1. Статті в журналах
  2. Дисертації
  3. Книги
  4. Частини книг
  5. Тези доповідей конференцій

Статті в журналах з теми "Geomechanical restoration":

1

Crook, Anthony J. L., Joshua Obradors-Prats, Deniz Somer, Djordje Peric, Pete Lovely, and Marek Kacewicz. "Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction." Oil & Gas Sciences and Technology – Revue d’IFP Energies nouvelles 73 (2018): 18. http://dx.doi.org/10.2516/ogst/2018018.

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Many sedimentary basins host important reserves of exploitable energy resources. Understanding of the present-day state of stresses, porosity, overpressure and geometric configuration is essential in order to minimize production costs and enhance safety in operations. The data that can be measured from the field is, however, limited and at a non-optimal resolution. Structural restoration (inverse modelling of past deformation) is often used to validate structural interpretations from seismic data. In addition, it provides the undeformed state of the basin, which is a pre-requisite to understanding fluid migration or to perform forward simulations. Here, we present a workflow that integrates geomechanical-based structural restoration and forward geomechanical modelling in a finite element framework. The geometry and the boundary kinematics derived from restoration are used to automatically create a forward geomechanical model. Iterative correction may then be performed by either modifying the assumptions of the restoration or modifying the restoration-derived boundary conditions in the forward model. The methodology is applied to two problems; firstly, a sand-box scale benchmark model consisting of sand sediments sliding on silicon leading to the formation of a graben structure; secondly, a field-scale thrust-related anticline from Niger Delta. Two strategies to provide further constraint on fault development in the restoration-derived forward simulation are also presented. It is shown that the workflow reproduces the first order structural features observed in the target geometry. Furthermore, it is demonstrated that the iterative approach provides improved understanding of the evolution and additional information of current-day stress and material state for the Niger Delta Case.
2

MacDonald, Justin, Guillaume Backé, Rosalind King, and Richard Hillis. "The Hammerhead Delta—deepwater fold-thrust belt, Bight Basin, Australia: 2D kinematic and geomechanical reconstructions." APPEA Journal 51, no. 2 (2011): 739. http://dx.doi.org/10.1071/aj10119.

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The Hammerhead Delta—deepwater fold-thrust belt is located in the Ceduna Sub-basin of the Bight Basin, offshore southern Australia. It is a short lived gravity gliding system, Late Santonian-Maastrichtian in age. It exhibits a distinctive spoon shape in cross-section and detaches on a master horizon above Santonian marine shales of the Tiger Supersequence. Here, we have interpreted a large seismic dataset—including the recently acquired regional two-dimensional seismic dataset provided by Ion Geophysical—to constrain the regional structural geometry of the Hammerhead Delta—deepwater fold-thrust belt. Two structural restorations were completed to quantify the amount of extension and shortening in the system. These restorations were: a two-dimensional kinematic restoration, using 2D MOVE; and a two-dimensional geomechanical restoration, using Dynel 2D. By comparing results from the two techniques we demonstrate that the amount of observed extension in the delta top is nearly balanced by the shortening in the delta toe. The near balance (< 2 % excess extension) of the system is a unique result. Other passive margin systems demonstrate larger amounts of extension compared to shortening, due to the regional-scale pro-gradational nature of the systems. These results suggest that the balanced geometry of the Hammerhead Delta—deepwater fold-thrust belt is consistent with either a sudden decrease in sediment supply during the upper Maastrichtian, resulting in a cessation of prograding fault activity, or a loss of extension to the underlying Cenomanian growth faults or some combination thereof. Thus, the system failed to develop into an extensive passive margin delta—deepwater fold-thrust belt.
3

Shiri, Yousef, and Alireza Shiri. "DISCRETE FRACTURE NETWORK (DFN) MODELLING OF FRACTURED RESERVOIR BASED ON GEOMECHANICAL RESTORATION, A CASE STUDY IN THE SOUTH OF IRAN." Rudarsko-geološko-naftni zbornik 36, no. 4 (2021): 151–62. http://dx.doi.org/10.17794/rgn.2021.4.12.

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Fractured reservoirs have always been of interest to many researchers because of their complexities and importance in the oil industry. The purpose of the current study is to model the fractured reservoir based on geomechanical restoration. Our target is the Arab Formation reservoir which is composed of seven limestone and dolomite layers, separated by thin anhydrite evaporate rock. First of all, in addition to the intensity, the dip, and the azimuth of the fractures, the magnitude and the direction of the stresses are determined using wireline data e.g. photoelectric absorption factor (PEF), sonic density, neutron porosity, a dipole shear sonic imager (DSI), a formation micro imager (FMI), and a modular formation dynamics tester (MDT). Then, the seismic data are interpreted and the appropriate seismic attributes are selected. One of our extracted attributes was the ant tracking attribute which is used for identifying large-scale fractures. Using this data, fractures and faults can be identified in the areas away from wells in different scales. Subsequently, the initial model of the reservoir is reconstructed. After that, the stress field and the distribution of fractures are obtained using the relationship between the stresses, the strains, and the elastic properties of the existing rocks. The model is finely approved using the azimuth and the intensity of fractures in the test well. Our findings showed that the discrete fracture network (DFN) model using geomechanical restoration was positively correlated with real reservoir conditions. Also, the spatial distribution of fractures was improved in comparison to the deterministic-stochastic DFN.
4

Schuh-Senlis, Melchior, Cedric Thieulot, Paul Cupillard, and Guillaume Caumon. "Towards the application of Stokes flow equations to structural restoration simulations." Solid Earth 11, no. 5 (October 22, 2020): 1909–30. http://dx.doi.org/10.5194/se-11-1909-2020.

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Abstract. Structural restoration is commonly used to assess the deformation of geological structures and to reconstruct past basin geometries. For this, geomechanical restoration considers faults as frictionless contact surfaces. To bring more physical behavior and better handle large deformations, we build on a reverse-time Stokes-based method, previously applied to restore salt structures with negative time step advection. We test the applicability of the method to structures including sediments of variable viscosity, faults and non-flat topography. We present a simulation code that uses a combination of arbitrary Lagrangian–Eulerian methods and particle-in-cell methods, and is coupled with adaptive mesh refinement. It is used to apply the reverse-time Stokes-based method on simple two-dimensional geological cross-sections and shows that reasonable restored geometries can be obtained.
5

Nyantakyi, E. K., Li Tao, Hu Wangshui, and J. K. Borkloe. "The role of geomechanical-based structural restoration in reservoir analysis of deepwater Niger Delta, Nigeria." Acta Geodaetica et Geophysica 49, no. 4 (October 18, 2014): 415–29. http://dx.doi.org/10.1007/s40328-014-0072-6.

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6

Dubey, Prashant K., Sushil Kumar, Khushboo Havelia, and Savitri Yadav. "Integrated deterministic and predictive discrete fracture network modeling for an Eocene carbonate reservoir, Bengal Basin, India." Leading Edge 38, no. 4 (April 2019): 274–79. http://dx.doi.org/10.1190/tle38040274.1.

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Prediction of fracture porosity and permeability remains a challenge for fractured carbonate reservoirs. As natural fractures are heterogeneous and subseismic in scale, core data and image logs only provide partially sampled data, leading to sparse information on fracture length, height, orientation, spacing, and aperture. In the present study, an integrated discrete fracture network was generated that is capable of predicting fracture porosity in Eocene carbonates of the Bengal Basin in northeastern India. The predictive fracture modeling method used 3D kinematic and geomechanical restoration of interpreted seismic horizons to estimate infinitesimal stress and strain values and to characterize associated fracture sets. Seismic attribute analysis was used to extract faults and fractures from an ant-track cube, which provided sharper definition of discontinuities seen in conventional curvature attribute data. An integrated discrete fracture model was created using information from seismic attributes, seismic inversion, and strain distribution to determine fracture intensity. Faults and fractures that are seismically resolved were statistically analyzed, which indicated that spatial distribution of fracture length follows a power law. Based on theoretical concepts of fracture mechanics, linear aperture-to-length scaling was used to characterize aperture population. A present-day geomechanical earth model was used to identify open fracture sets. This model shows that northeast–southwest-oriented fracture sets are critically stressed and will contribute to porosity and permeability. Criticality of fractures to shear failure was analyzed by computing geomechanical parameters — slip stability and dilation tendency, based on the direction and magnitude of far-field stresses. Fractures with slip and dilation tendencies greater than 0.6 in the modeled discrete fracture network were taken as inputs for porosity and permeability estimation.
7

Kim, Jongchan, Jong-Sub Lee, Cody Arnold, and Sang Yeob Kim. "Evaluation of Thawing and Stress Restoration Method for Artificial Frozen Sandy Soils Using Sensors." Sensors 21, no. 5 (March 9, 2021): 1916. http://dx.doi.org/10.3390/s21051916.

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Undisturbed frozen samples can be efficiently obtained using the artificial ground freezing method. Thereafter, the restoration of in situ conditions, such as stress and density after thawing, is critical for laboratory testing. This study aims to experimentally explore the effects of thawing and the in situ stress restoration process on the geomechanical properties of sandy soils. Specimens were prepared at a relative density of 60% and frozen at −20 °C under the vertical stress of 100 kPa. After freezing, the specimens placed in the triaxial cell underwent thawing and consolidation phases with various drainage and confining stress conditions, followed by the shear phase. The elastic wave signals and axial deformation were measured during the entire protocol; the shear strength was evaluated from the triaxial compression test. Monotonic and cyclic simple shear tests were conducted to determine the packing density effect on liquefaction resistance. The results show that axial deformation, stiffness, and strength are minimized for a specimen undergoing drained thawing, restoring the initial stress during the consolidation phase, and that denser specimens are less susceptible to liquefaction. Results highlight that the thawing and stress restoration process should be considered to prevent the overestimation of stiffness, strength, and liquefaction resistance of sandy soils.
8

Stockmeyer, Joseph M., John H. Shaw, Lee T. Billingsley, Andreas Plesch, Michael Wales, Leore C. Lavin, Ray Knox, and Luke Finger. "Geomechanical restoration as a tool for fractured reservoir characterization: Application to the Permian Basin, west Texas." AAPG Bulletin 102, no. 01 (January 2018): 103–28. http://dx.doi.org/10.1306/03231716076.

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9

Petlovanyi, Mykhailo, Kateryna Sai, and Dmytro Malashkevych. "Specifics and practical examples of low-hazard industrial waste utilization for filling technogenic cavities." InterConf, no. 37(171) (September 20, 2023): 314–22. http://dx.doi.org/10.51582/interconf.19-20.09.2023.026.

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The presented research focuses on the pressing issues of restoration of land areas disturbed by mining operations. The paper studies legislative peculiarities of industrial waste utilization for the purpose of reclamation of disturbed lands in Ukraine. Real practical examples of using low-hazard industrial waste for reclamation of land areas disturbed by quarrying and failure zones are analyzed. It is noted that, provided that all legal and sanitary requirements are met, low-hazard class IV waste can be used at the mining-technical stage of quarry reclamation. Aspects of the prospects for restoring the earth’s surface level are clarified based on the development of directions for the backfill mass formation in technogenic cavities, which will provide stability and geomechanical reliability of the earth’s surface.
10

Wang, Lining. "Introduction of geomechanical restoration method and its implications for reservoir assessment of unconventional oil–gas resource in China." Chinese Journal of Population Resources and Environment 11, no. 4 (December 2013): 327–32. http://dx.doi.org/10.1080/10042857.2013.835538.

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Статті в журналах

Дисертації з теми "Geomechanical restoration":

1

Schuh-Senlis, Melchior. "Using Stokes flow equations for the geomechanical restoration of geological structural models." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0064.

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Afin d'étudier les roches du sous-sol, il est nécessaire de comprendre les déformations qu'elles ont subi depuis leur création. Les données disponibles n'étant souvent pas suffisantes pour déterminer de manière exacte ces déformations, les géologues font un certain nombre d'hypothèses par rapport à leurs connaissances et à des cas analogues. Celles-ci, en s'ajoutant aux données, permettent la création de modèles structuraux, somme des données et connaissances sur une zone. La restauration structurale a été développée pour essayer de faire remonter le temps à ces modèles géologiques. L'objectif est double: tout d'abord vérifier si le modèle structural permet la restauration vers un état géologique raisonnable, et donc limiter les incertitudes sur celui-ci. Ensuite, étudier la rétro-déformation des roches peut permettre d'en apprendre plus sur leur histoire (ainsi que vérifier les hypothèses faites sur celle-ci). Dans les contextes de bassins sédimentaires faillés, les méthodes de restauration utilisent des notions mécaniques pour calculer la déformation des roches, mais les conditions permettant d'appliquer un mouvement en temps inverse aux modèles étudiés sont encore principalement géométriques. Dans les contextes de bassins évaporitiques, une méthode de restauration a été développée en utilisant les équations de fluides visqueux, mais néglige le comportement des failles et les mouvements de la topographie. La principale contribution de cette thèse est l'ajout de conditions plus physiques à la restauration de bassins sédimentaires faillés, et d'une méthode numérique pour l'appliquer. Cette méthode de restauration s'appuie sur des simulations mécaniques du sous-sol afin de calculer la rétro-déformation. Dans ces simulations, les roches sont considérées comme des fluides ayant une très grande viscosité, et la rétro-déformation s'appuie sur une advection du modèle en temps négatif. Les failles, elles, sont considérées comme des zones de cisaillement où les roches ont une viscosité plus faible. Cette méthode de restauration offre des résultats concluants sur des modèles simplifiés du sous-sol. La seconde contribution de cette thèse est une évaluation de l'influence des différents paramètres de simulation sur le modèle restauré. Cette évaluation s'appuie sur la restauration d'un modèle analogique de laboratoire. Dans un premier temps, l'influence des conditions aux limites est étudiée, afin de déterminer les conditions les plus naturelles possibles permettant une restauration du modèle. Dans un second temps, l'influence des paramètres mécaniques à l'intérieur du modèle est étudiée, afin de déterminer les paramètres effectifs les plus proches de ceux des roches. Ces contributions ouvrent une nouvelle perspective sur la manière d'introduire des conditions plus physiques dans la restauration mécanique du sous-sol
In order to study the subsurface, one must first understand its deformation through time. As the available data coverage is not sufficient to determine these deformations precisely, geologists make hypotheses to link them depending on their knowledge. This allows them to create structural models, which can be seen as the sum of all the data and knowledge on a specific area. Structural restoration was developped to try and make a model go back in time. The advantages are dual: first, it allows the validation of the structural model by checking if the restored model has a reasonable geometry. Second, the history and retro-deformation of the rock layers can be studied from the path they take during the restoration process (which also allows checking the hypotheses that were made on the history of the area). In the context of faulted and folded sedimentary basins, mechanics have been incorporated in the restoration process to compute the deformation of the rock layers inside the models, but the time reversal is still driven mainly by geometric conditions. In the context of basins incorporating salt tectonics, creeping flow restoration was developped by considering the rocks as highly viscous fluids, but neglects faults and non-flat topography. The main contribution of this thesis is to provide an approach to add more physical conditions to the restoration of faulted sedimentary basins. This approach relies on mechanical simulations of the subsurface. The rock layers are treated as highly viscous fluids, and the restoration is driven by a negative time-step advection. The faults are considered as shear zones with an effective viscosity lower than the surrounding sediments. This methods allowed the restoration of several simplified models of the subsurface. The second contribution of this thesis is an assessment of the choice of the parameters for the restoration simulations. This assessment is based on the restoration of a laboratory analogue model. The boundary conditions are first studied, to determine how to provide an adequate choice of conditions that still allow the restoration of the model. The material properties and their influence are then looked upon, to determine the effective parameters that are closest to those of the rocks inside the model. These contributions offer a new perspective on how to add more physical conditions to the geomechanical restoration of structural models of the subsurface
2

Maerten, Frantz. "Geomechanics to solve geological structure issues : forward, inverse and restoration modeling." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20031.

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Différentes applications de l'élasticité linéaire en géologie structurale sont présentées dans cette thèse à travers le développement de trois types de codes numériques. Le premier utilise la modélisation directe pour étudier les déplacements et champs de contraintes autour de zones faillées complexes. On montre que l'ajout de contraintes inégalitaires, telles que la friction de Coulomb, permet d'expliquer l'angle d'initiation des dominos dans les relais extensifs. L'ajout de matériaux hétérogènes et d'optimisations, telles la parallélisation sur processeurs multi-coeurs ainsi que la réduction de complexité des modèles, permettent l'étude de modèles beaucoup plus complexes. Le second type de code numérique utilise la modélisation inverse, aussi appelée estimation de paramètres. L'inversion linéaire de déplacements sur les failles ainsi que la détermination de paléo-contraintes utilisant une approche géomécanique sont développées. Le dernier type de code numérique concerne la restoration de structures complexes plissées et faillées. Il est notamment montré qu'une telle méthode permet de vérifier l'équilibre de coupes géologiques, ainsi que de retrouver la chronologie des failles. Finalement, nous montrons que ce même code permet de lisser des horizons 3D faillés, plissés et bruités en utilisant la géomécanique
Different applications of linear elasticity in structural geology are presented in this thesis through the development of three types of numerical computer codes. The first one uses forward modeling to study displacement and perturbed stress fields around complexly faulted regions. We show that incorporating inequality constraints, such as static Coulomb friction, enables one to explain the angle of initiation of jogs in extensional relays. Adding heterogeneous material properties and optimizations, such as parallelization on multicore architectures and complexity reduction, admits more complex models. The second type deals with inverse modeling, also called parameter estimation. Linear slip inversion on faults with complex geometry, as well as paleo-stress inversion using a geomechanical approach, are developed. The last type of numerical computer code is dedicated to restoration of complexly folded and faulted structures. It is shown that this technique enables one to check balanced cross-sections, and also to retrieve fault chronology. Finally, we show that this code allows one to smooth noisy 3D interpreted faulted and folded horizons using geomechanics
3

Stockmeyer, Joseph M. "Active deformation over multiple earthquake cycles in the southern Junggar fold and-thrust belt, NW China and fractured reservoir characterization using 3D geomechanical restorations." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493253.

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This dissertation investigates natural deformation processes over multiple earthquake cycles in the seismically active, southern Junggar basin, NW China and additionally explores the capabilities of 3D geomechanical restoration as an effective tool for fractured reservoir characterization. Chapter 1 presents a detailed 3D fault model of the active Southern Junggar Thrust (SJT) – constrained by seismic reflection data – in the southern Junggar basin. This work demonstrates the significance of mid-crustal detachments as a physical mechanism to accommodate destructive, multi-segment earthquakes in active thrust sheets. Moreover, it highlights the efficacy of surface folds to delineate fault geometries at depth in the absence of subsurface data constraints. Chapter 2 describes active thrust sheet deformation across the Tugulu anticline, which sits in the hanging wall of the SJT, from Late Quaternary to present. Holocene terrace deformation records of surface faulting and folding yield consistent fault slip rates. We develop a quantitative method for extracting fault slip rates from terrace fold geometries using a mechanical modeling approach, yielding a 250 kyr history of SJT slip. This study provides new insights into natural fold growth associated with fault slip. Moreover, it addresses several shortcomings of traditional seismic hazards assessment methodologies. Chapter 3 characterizes the styles, timing, and sequence of deformation across southern Junggar. Southern Junggar underwent extension followed by tectonic inversion and shortening, forming a series of imbricate structural wedges. A kinematic model for the evolution of shear fault-bend fold wedges is presented. We discuss the implications of structural style, fold growth and thrusting sequence on the ~175 Myr evolution of this fold-and-thrust belt and its petroleum system. Chapter 4 investigates the impact of natural fold strains on fractured reservoir properties in the Permian Basin, West Texas. This study details the ability of 3D geomechanical restorations to accurately model natural strain distributions associated with fold growth. Modeled strains from geomechanical restorations are integrated with proxies for natural deformation and production data to describe how tectonic strain impacted observed gas production, water cuts and reservoir temperatures. When used in conjunction with additional datasets, geomechanical restoration shows promise for predictive abilities in characterizing conventional and unconventional fractured reservoir properties.
Earth and Planetary Sciences
4

Durand-Riard, Pauline. "Gestion de la complexité géologique en restauration géomécanique 3D." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL055N/document.

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La restauration est un outil de géologie structurale qui a prouvé son utilité dans divers domaines, tels que la compréhension des mécanismes de déformation, la prédiction de fractures, la validation de modèles structuraux, etc. En 3D, l'approche géomécanique est particulièrement prometteuse, puisqu'elle permet non seulement de connaître la déformation en tout point du modèle, mais aussi de prendre en compte les contrastes de propriété des matériaux. Cependant, elle nécessite un maillage tétraédrique du modèle dont la génération est à ce jour très difficile dans le cas de modèles à géométrie complexe (réseaux de failles interconnectés ou à faible rejet, discordances ou amincissements de couche). La modélisation implicite consiste à représenter les horizons stratigraphiques par des isovaleurs de propriété, ce qui permet de s'affranchir de la plupart des contraintes de maillage. Dans une première partie, une méthode de restauration géomécanique 3D applicable à des modèles implicites est présentée. La deuxième partie de ce travail s'intéresse à l'application de celle-ci à des cas complexes. Dans ce cadre, de nouvelles lois de comportement géomécaniques et conditions aux limites ont été développées, et des études de sensibilité à ces paramètres ont été menées. Ces travaux sont illustrés sur un bassin pétrolier complexe situé dans le delta du Niger où la restauration permet de définir une chronologie de déformation. Enfin, la troisième partie présente l'intégration d'une méthode de décompaction isostatique en volume au sein du processus de restauration 3D. Appliquée au synclinal des grès d'Annot (SE de la France), cette méthode permet de caractériser l'histoire de déformation et d'enfouissement du bassin
Restoration is a structural geology tool which usefulness has been shown in various fields, such as the understanding of deformation mechanisms, fracture forecasting, or structural models validation. In 3D, the geomechanical approach is particularly promising as it allows the deformation at any point in the model to be infered, but also to account for material property contrasts. However, it requires to generate a tetrahedral mesh, a step that may be, so far, extremely difficult, particularly when the geometry of the model is complex (interconnected faults, faults with small throws, unconformities or layer pinch-out).Implicit modeling consists in representing stratigraphic horizons by property isovalues, allowing most meshing issues to be overcame. In a first part, a geomechanical restoration method suitable for implicit models is presented. The second part of this work focuses on the application of this method to complex cases. New behavioral laws and boundary conditions have been developed, and sensitivity studies to these parameters have been performed. This work is applied to a petroleum basin located in the Niger delta toe where the restoration allows the structural evolution of the system to be constrained. The last part presents the integration of a 3D isostatic decompaction method into the 3D restoration process. Applied to the Annot Sandstones syncline (SE France), this method allows to characterize the deformation and burial history of the basin
5

Shackleton, John Ryan. "Numerical Modeling of Fracturing in Non-Cylindrical Folds: Case Studies in Fracture Prediction Using Structural Restoration." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/open_access_dissertations/82/.

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Книги з теми "Geomechanical restoration":

1

Maerten, Frantz. Geomechanics to Solve Geological Structure Issues: Forward, Inverse and Restoration Modeling. Independently Published, 2010.

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Частини книг з теми "Geomechanical restoration":

1

Li, Xu, Ya-bin Guo, Lin-ke Zhang, Bin-hua Guo, and Jin-fu Li. "Study and Application of Seismic Sedimentology in Paleogeomorphology Restoration." In Springer Series in Geomechanics and Geoengineering, 1142–53. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0761-5_107.

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2

Lin, Tie-feng, Xiu-li Fu, Kun-ning Cui, He Liu, Yue Bai, Ming-yu Jin, Yang-xin Su, et al. "Restoration of Paleosedimentary Environment of Qingshankou Formation in Songliao Basin." In Springer Series in Geomechanics and Geoengineering, 6731–46. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1964-2_574.

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3

Ramana, G. Venkata, R. Suresh Kumar, and P. Balakrishna. "Restoration of Ecological Balance Through Regression Analysis in Kothapally Agricultural Fields." In Springer Series in Geomechanics and Geoengineering, 817–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77276-9_74.

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4

Sui, Liwei, Wen-lu Yang, Bao-quan Song, Quan Wen, and Zong-lun Sha. "Quantitative Restoration of Tongbomiao Formation Paleogeomorphology and Its Geological Significance in Tanan Depression." In Springer Series in Geomechanics and Geoengineering, 3309–22. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_306.

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5

Zhou, Hong-ying, Yu-kun Guo, Qian Ye, Yuan-long Li, and Zhi-guo Ma. "Application of Remote Sensing Intelligent Monitoring Technology for Oil and Gas Well Exit and Ecological Restoration." In Springer Series in Geomechanics and Geoengineering, 3–20. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0272-5_1.

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6

Wang, Zhen, Yan-kun Wang, Shu-tang Jin, Ren Jiang, and Ya-ping Lin. "Restoration of Paleogeomorphology in the Eastern Margin of the Precaspian Basin and Its Control on Reefs and Shoals." In Springer Series in Geomechanics and Geoengineering, 770–80. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1964-2_66.

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7

Zhao, Ning, Guangya Zhang, Xia Gao, and Jiangqin Huang. "The Paleotopography Restoration and Structural Modeling Based on Base Level Equilibrium Method: A Case on Abu Gabra Formation in Block 1/2/4 of Sudan, Muglad Basin." In Springer Series in Geomechanics and Geoengineering, 2240–51. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_204.

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8

"Recent advances in prediction, prevention and restoration for geohazards." In Computer Methods and Recent Advances in Geomechanics, 1759. CRC Press, 2014. http://dx.doi.org/10.1201/b17435-311.

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9

Noma, Y., H. Yamamoto, T. Nishimura, H. Kasa, T. Nishigata, and K. Nishida. "Investigation of dynamic stability on the effect of restoration of an aged castle masonry wall." In Computer Methods and Recent Advances in Geomechanics, 1601–6. CRC Press, 2014. http://dx.doi.org/10.1201/b17435-283.

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10

Banerjee, Subho, and Sankar Muhuri. "Application of Geomechanics-Based Restoration in Structural Analysis along Passive Margin Settings—Deep-Water Niger Delta Example." In New Understanding of the Petroleum Systems of Continental Margins of the World: 32nd Annual, 737–60. SOCIETY OF ECONOMIC PALEONTOLOGISTS AND MINERALOGISTS, 2012. http://dx.doi.org/10.5724/gcs.12.32.0737.

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Тези доповідей конференцій з теми "Geomechanical restoration":

1

Laurent, G., G. Caumon, M. Jessell, and J. J. Royer. "3D Chronostratigraphic Coordinate System Based on Geomechanical Restoration." In 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011. Netherlands: EAGE Publications BV, 2011. http://dx.doi.org/10.3997/2214-4609.20149112.

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2

Korpach, S. V. "Examining Strain Distribution Using Geomechanical Restoration to Predict Fractured Reservoir." In Geomodel 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202050050.

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3

Risyad, M. "3D Natural Fracture Prediction Using Integrated Method of Structural Restoration and Geomechanical Forward Modelling: Case Study in South Sumatra Basin, Indonesia." In Digital Technical Conference. Indonesian Petroleum Association, 2020. http://dx.doi.org/10.29118/ipa20-g-150.

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Naturally fractured reservoir has important role in oil and gas development in onshore South Sumatra Basin Indonesia. There are several fields in Indonesia have hydrocarbon (oil or gas) potential in this type of reservoir. One of the fields is Northeast Betara operated by PetroChina International Jabung Ltd. The Northeast Betara structure consists of a basement high with tertiary burial that has been inverted due to compressive stresses during Late Miocene – Pliocene. The company plans to develop Lower Talang Akar Formation (LTAF) conglomeratic sand reservoir of Northeast Betara field which is believed to be naturally fractured. Well-B was drilled targeting conglomerate and fractured basement reservoir in the field. Unfortunately, even the Well-B intersected more fractures, the hydrocarbon test result was under expectation compared to previous Well-A 5 Km away, which encountered similar reservoir but shows better production test. Due to productivity discrepancy, this study is conducted to answer this issue by predicting natural fracture distribution across the field. An integrated structural restoration and geomechanical forward modelling is carried out thoroughly in order to better target the next well intersecting productive fractures. Structural restoration with finite element method provides layer geometries from initial deposition to the present day enabling explicit coupling with Stress Simulation engine at each geological time. Forward modelling could then be achieved by applying strain boundary conditions at the base of the model using known differential vertical displacement from one geological time to the next and lateral strain at the vertical boundaries of the model. Geomechanical forward modelling (GFM) simulates the evolution of structures of a geomechanical model from deposition up to present day and captures the geomechanical details with geological time. The main result of the study is plastic shear strains across the field, which subsequently converted into fracture density with orientation and inclination and can delineate the location of productive fractures. The fracture planes are defined by orientation and inclination matched over >85% of the observed fractures in the wells. Simulation results suggest that most fractures in the location of Well-A in the field are critically stressed and therefore expected to have better hydrocarbon production potential. This paper showcases approach of advanced geomechanical technique to predict 3D natural fracture distribution using existing data. The result will be used as reference to determine further development strategy.
4

AlHawaj, Ahmed, and Yaser AlZayer. "Reducing fault and seal uncertainty through restoration and forward geomechanical modeling in a compressional regime in the Arabian Plate." In Second International Meeting for Applied Geoscience & Energy. Society of Exploration Geophysicists and American Association of Petroleum Geologists, 2022. http://dx.doi.org/10.1190/image2022-3742538.1.

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5

Fernandes, Bastos Fernando, Arthur Martins Barbosa Braga, Antonio Luiz S. de Souza, and Antonio Cláudio Soares. "Coupled Integro-Differential-Assymptotic Solution for Permeabiliy Loss/Restoration Monitoring in Pressure-Sensitive Oil Reservoirs." In Offshore Technology Conference. OTC, 2022. http://dx.doi.org/10.4043/31734-ms.

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Abstract The Nonlinear Hydraulic Diffusivity Equation (NHDE) models the isothermal single-phase Darcian flow through porous media considering the variation in the properties of the rock and the fluid present inside its pores. Typically, the dimensionless solution of the Linear Hydraulic Diffusivity Equation (LHDE) pD(rD, tD) for constant permeability oil flow in porous media is computed through Laplace and Fourier transform or Boltzmann transformation. For the constant permeability approach, the dimensionless general solution in cylindrical coordinates is expressed by the transcendental function exponential integral Ei(rD,tD). This work develops analytically a new coupled perturbative-integro-differential model to solve the NHDE for oil flow in a permeability-pressure-sensitive reservoir with source. The general solution is computed combining a first order asymptotic series expansion, Green's functions (GF's) and a Volterra's second kind integro-differential formulation. A set of pore pressure and permeability values from two sandstones samples of an offshore reservoir from Brazil is obtained experimentally using the geomechanical elastic parameters e.g. the Young's modulus and Poisson's ratio, and uni-axial cell data. These data are used as an input in the computational code to run the proposed model and evaluate the reservoir permeability change. After these data input, the model runs and allowing to compute the instantaneous reservoir permeability values over the well-reservoir life cycle. The model calibration is performed using a porous media oil flow simulator and the results are accurate.
6

Fernandes, Bastos Fernando, Arthur Martins Barbosa Braga, Antonio Luiz S. de Souza, and Antonio Cláudio Soares. "Coupled Integro-Differential-Assymptotic Solution for Permeabiliy Loss/Restoration Monitoring in Pressure-Sensitive Oil Reservoirs." In Offshore Technology Conference. OTC, 2022. http://dx.doi.org/10.4043/31734-ms.

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Abstract The Nonlinear Hydraulic Diffusivity Equation (NHDE) models the isothermal single-phase Darcian flow through porous media considering the variation in the properties of the rock and the fluid present inside its pores. Typically, the dimensionless solution of the Linear Hydraulic Diffusivity Equation (LHDE) pD(rD, tD) for constant permeability oil flow in porous media is computed through Laplace and Fourier transform or Boltzmann transformation. For the constant permeability approach, the dimensionless general solution in cylindrical coordinates is expressed by the transcendental function exponential integral Ei(rD,tD). This work develops analytically a new coupled perturbative-integro-differential model to solve the NHDE for oil flow in a permeability-pressure-sensitive reservoir with source. The general solution is computed combining a first order asymptotic series expansion, Green's functions (GF's) and a Volterra's second kind integro-differential formulation. A set of pore pressure and permeability values from two sandstones samples of an offshore reservoir from Brazil is obtained experimentally using the geomechanical elastic parameters e.g. the Young's modulus and Poisson's ratio, and uni-axial cell data. These data are used as an input in the computational code to run the proposed model and evaluate the reservoir permeability change. After these data input, the model runs and allowing to compute the instantaneous reservoir permeability values over the well-reservoir life cycle. The model calibration is performed using a porous media oil flow simulator and the results are accurate.
7

Lefranc, M., A. Mohamad Hussein, C. P. Tan, X. Legrand, B. C. Lee, L. Maerten, D. Press, and L. Anis. "3D Structural restoration and Geomechanical Forward Modeling in a visco-plastic medium to natural fracture prediction in a Malay producing field, offshore Malaysia." In Offshore Technology Conference-Asia. Offshore Technology Conference, 2014. http://dx.doi.org/10.4043/24753-ms.

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8

Abdullah, Aishah Khalid, Bhaskar Chakrabarti, Anas Mansor Al-Rukaibi, Talal Fahad Hadi Al-Adwani, Khushboo Havelia, and Subrata Chakraborty. "Application of Techniques of Natural Fracture Characterization for Appraisal of Tight Carbonate Reservoirs: A Case Study From Jurassic of Kuwait." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/208051-ms.

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Abstract The State of Kuwait is currently appraising and successfully developing the tight carbonates reservoirs of Jurassic age, which have very low matrix porosity and permeability. These reservoirs are affected by several tectonic events of faulting and folding, resulting in the development of interconnected natural fractures, which provide effective permeability to the reservoirs in form of production sweet spots. The objective of the study was to characterize the natural fractures and identify high permeability sweet spots as being appraisal drilling locations in a discovered field with tight carbonate reservoirs. An integrated approach was undertaken for building a discrete fracture network model by characterizing the developed faulting- and folding-related fractures and combining all subsurface data from multiple domains. The reservoir structure has a doubly plunging anticline at the field level that is affected by several strike-slip faults. The faulting-related fractures were characterized by generating multiple structural seismic attributes, highlighting subsurface discontinuities and fracture corridors. The folding-related fractures were modelled using structural restoration techniques by computing stresses resulting from the anticlinal folding. The fracture model was built in addition to the 3D matrix property model for this tight carbonate reservoir, resulting in a dual-porosity-permeability static model. Analogue data was used to compute fracture aperture and expected fracture porosity and permeability, to identify the sweet spots. Structural seismic attributes such as Ant Tracking and Consistent Dip were successful in highlighting and identifying the fault lineaments and fracture corridors. The seismic discontinuities were validated using the fractures interpreted in the image log data from the predrilled wells before being input into the fracture model. Paleo stresses, derived from structural restoration, were combined with the reservoir facies and geomechanical properties to gain important insight into predicting fractures developed due to folding. Several fracture aperture scenarios were run to capture the uncertainty associated with the computed fracture porosity and permeability. Based on the results, several sweet spots were identified, which were ranked based on their extent and connected volumes of the various permeability cases. Identifying these sweet spots helped make informed decisions regarding well planning and drilling sequence. High-inclination wells aligned parallel to the present-day maximum stress direction were proposed, which would cut across corridors of the predicted open fractures. Through this study, comprehensive fracture characterization and fracture permeability understanding of the tight carbonates in the field under study were successfully achieved. This workflow will be useful in exploratory or appraisal fields with tight carbonate reservoirs.
9

Carvalho, F. F., A. O. Junior, B. M. Freiman, C. A. Furtado, E. Paulo, G. Moraes, H. L. Pereira, et al. "Innovative and Technological Approaches to Mitigate Produced Water Reinjection Losses in Mature Fields: Challenges and Solutions." In Offshore Technology Conference. OTC, 2024. http://dx.doi.org/10.4043/35316-ms.

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Abstract In 2017, a change in the environmental agency IBAMA's understanding of Total Oil and Grease (TOG) analysis for produced water discharge into the sea mandated the reinjection of produced water in six production units in Marlim Sul and Roncador fields. Platforms not originally designed for reinjection underwent topside adaptations for additional treatment and necessary interconnections to blend produced water with sea water for injection into wells. Failure to achieve this goal could result in production losses of up to 250 thousand barrels per day, leading to platform restrictions and shutdowns due to the inability to dispose of produced water. When injected into the reservoir, produced water impurities cause injector well plugging, resulting in reduced field injection capacity. Hence, platform adaptations included a project that reconciled platform limitations with reservoir requirements. Acid treatment of injector wells and restoration of injection capacity involved installing supports and connections on the platform's side to perform acidification by directly connecting stimulation vessels to the production unit. This adaptation allows interventions without the need for a rig, substantially optimizing costs and downtime of injector wells. Innovatively, geomechanical studies and simulations were conducted to enable mechanical well stimulation operations through pressure pulses. This maneuver, independent of external platform resources, incurs no additional costs. By manipulating flow and pressure variations in wells, controlled reservoir fracturing is induced, resulting in a significant 50% increase in injectivity in many cases. This measure yielded approximately USD 10 million in savings by optimizing acidification costs with vessels and preserving the potential of producer wells through sustained injection. This work illustrates the outcome of a proactive field management approach, the application of technologies, innovative practices, and the optimization of production/injection in Petrobras' Marlim Sul and Roncador mature fields.
10

Lukmanov, Rinat, and Mohammed Aamri. "Geomechanics Without Sonic In Tight Gas Reservoirs In The North Of Oman." In SPE Middle East Unconventional Resources Conference and Exhibition. SPE, 2015. http://dx.doi.org/10.2118/spe-172918-ms.

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Abstract Barik and Miqrat are the main two deep tight gas clastic reservoirs in several fields of Oman. In the area of the current Study, these reservoirs are encountered at depth 4500-5200 m and contain rich gas/condensate. Average permeability for different units ranges from 0.02 to 4 mD, porosity up to 14% with averages values within the range 5-10%. In order to produce economically, hydraulic fracturing is applied in these reservoirs. Geomechanics calculations are essential for the fracturing design. One of the particular challenges is fracture containment within the gas zone because in view of low stress contrast between different lithologies. Sonic data are normally used for these calculations. However, based on the analysis of the Sonic data available, a simple workflow was developed for Geomechanics calculations which don't require Sonic. A good restoration of compressional Sonic was achieved using the total porosity and the rock volumetrics as the input data. The analysis reveals good correlation between the complex rock constituents and the Poisson's ratio. These findings resulted in good Shear Sonic restoration and fir for purpose calculations of Geomechanics parameters. The Minimum horizontal stress data obtained based on actual Sonic data matches very well with the Minimum horizontal stress derived without Sonic resulting in practically the same hydraulic fracturing design. The normalization of Gamma Ray and Neutron and rigorous multimineral analysis was a key to success for this methodology. A fit for purpose methodology was developed which enabled to perform identification of 3 key rock constituents even from the basic Triple Combo. The methodology for Geomechanics without Sonic was used for frac design in several wells. The proposed model is found to be very robust.

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