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Relevant bibliographies by topics / Survaey

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Academic literature on the topic 'Survaey'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Survaey"

1

Kent, S. M. "A Survey of Surveys." Symposium - International Astronomical Union 169 (1996): 47–55. http://dx.doi.org/10.1017/s0074180900229501.

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A new era for the field of Galactic structure is about to be opened with the advent of wide-area digital sky surveys. In this article, I will review the status and prospects for research for 3 new ground-based surveys: the Sloan Digital Sky Survey (SDSS), the Deep Near-Infrared Survey of the Southern Sky (DENIS) and the Two Micron All Sky Survey (2MASS). These surveys will permit detailed studies of Galactic structure and stellar populations in the Galaxy with unprecedented detail. Extracting the information, however, will be challenging.

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Hollis, Malcolm. "Survey of surveys: dampness." Structural Survey 17, no. 3 (September 1999): 138–42. http://dx.doi.org/10.1108/02630809910291253.

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Kealy, Shimona, Lucas Wattimena, and Sue O'Connor. "A Geological and Spatial Approach to Prehistoric Archaeological Surveys on Small Islands: Case Studies from Maluku Barat Daya, Indonesia." Kapata Arkeologi 14, no. 1 (July 30, 2018): 1. http://dx.doi.org/10.24832/kapata.v13i2.458.

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Survei arkeologi sangat penting untuk penemuan dan interpretasi sisa-sisa yang ditinggalkan oleh aktivitas manusia prasejarah. Saat ini penginderaan jarak jauh dan model prediktif telah meningkatkan jangkauan dan keberhasilan survei arkeologi, namun survei pejalan kaki untuk mengembangkan parameter model dan prediksi kebenaran dasar masih penting untuk keberhasilan suatu penemuan. Penelitian ini merupakan hasil survei arkeologi tahun 2017 di Pulau Babar Besar dan Pulau Wetang yang termasuk dalam bagian dari kelompok Kepulauan Babar, Maluku Barat Daya, Indonesia. Tercatat sebanyak 62 situs arkeologi ditemukan di kedua pulau tersebut, tujuh diantaranya merupakan situs lukisan cadas baru yang ditemukan di Pulau Wetang. Hasil survei ini menunjukkan keberhasilan penggunaan peta geologi dan topografi di samping citra satelit dalam mendeteksi daerah prospektif untuk survei. Hasil penelitian ini juga menunjukkan bahwa pemahaman karakteristik geologi daerah yang lebih rinci dan komparatif diperlukan sebelum dilakukan survei jarak jauh yang lebih lanjut di wilayah Maluku Barat Daya, Indonesia.Archaeological surveys are essential to the discovery and interpretation of remains left by past human activities. While remote sensing and predictive models have greatly improved the reach and success of archaeological survey, pedestrian surveys to develop model parameters and ground-truth predictions is still imperative for successful discoveries. Here we present the results of the 2017 archaeological survey of islands Babar Besar and Wetang in the Babar Island Group, Maluku Barat Daya, Indonesia. A total of 62 archaeological sites were recorded between the two islands; seven of which represent new rock art sites on Wetang island. Our survey results indicate the successful use of geological and topographic maps alongside satellite images in detecting prospective regions for survey. Results also indicate however that a more detailed and comparative understanding of the regions geology is required before more advanced forms of remote survey are conducted in the Maluku Barat Daya region.

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Morgan, Catherine L. "A Survey of MS/OR Surveys." Interfaces 19, no. 6 (December 1989): 95–103. http://dx.doi.org/10.1287/inte.19.6.95.

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Hong, Shangqin, Les Oxley, and Philip McCann. "A SURVEY OF THE INNOVATION SURVEYS." Journal of Economic Surveys 26, no. 3 (May 16, 2012): 420–44. http://dx.doi.org/10.1111/j.1467-6419.2012.00724.x.

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Edwards, John. "Endangered languages: a survey of surveys." Journal of Multilingual and Multicultural Development 36, no. 4 (November 3, 2014): 444–50. http://dx.doi.org/10.1080/01434632.2014.969120.

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Ogasaka, Y., T. Kii, Y. Ueda, T. Takahashi, H. Inoue, Y. Ishisaki, K. Ohta, et al. "Sky surveys withASCA — Deep Sky Survey." Astronomische Nachrichten: News in Astronomy and Astrophysics 319, no. 1-2 (1998): 43–46. http://dx.doi.org/10.1002/asna.2123190122.

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Ueda, Y., T. Takahashi, H. Inoue, T. Tsuru, M. Sakano, K. Ohta, M. Akiyama, et al. "Sky surveys withASCA — Large Sky Survey." Astronomische Nachrichten: News in Astronomy and Astrophysics 319, no. 1-2 (1998): 47–50. http://dx.doi.org/10.1002/asna.2123190123.

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Willner, Wolfgang, Erwin Bergmeier, and Idoia Biurrun. "A survey of vegetation survey papers." Phytocoenologia 48, no. 1 (March 1, 2018): 1–6. http://dx.doi.org/10.1127/phyto/2018/0271.

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Al-Zewairi, Malek, Mariam Biltawi, Wael Etaiwi, and Adnan Shaout. "Agile Software Development Methodologies: Survey of Surveys." Journal of Computer and Communications 05, no. 05 (2017): 74–97. http://dx.doi.org/10.4236/jcc.2017.55007.

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Dissertations / Theses on the topic "Survaey"

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Kaczmirek, Lars. "Human survey interaction usability and nonresponse in online surveys." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:180-madoc-21508.

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Hartelius, Karin, and Annie Johanson. "Involve to Evolve : Managing Employee Surveys in a Large Company." Thesis, Umeå universitet, Företagsekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-57406.

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Laiho, Petra Marjut Johanna. "Modelling survey participation in surveys involving multiple phases of data collection." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442783.

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Willcox, Jeffrey Scott 1970. "Oceanographic surveys with autonomous underwater vehicles : performance metrics and survey design." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/49992.

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Kaczmirek, Lars [Verfasser]. "Human survey interaction : usability and nonresponse in online surveys / von Lars Kaczmirek." [Mannheim] : [Univ.], 2008. http://d-nb.info/992375924/34.

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Turner, Malgorzata. "New perspectives on interviewer-related error in surveys : application of survey paradata." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/354343/.

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Hayward, Michael Clifford. "A comparative study of optimal stratification in business and agricultural surveys." Thesis, University of Canterbury. Mathematics and Statistics, 2010. http://hdl.handle.net/10092/5697.

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This thesis is a comparative study of optimal design-based univariate stratification as applied to highly skewed populations such as those observed in business and agricultural surveys. Optimal stratification is a widely used method for reducing the variance or cost of estimates, and this work considers various optimal stratification algorithms, and in particular optimal boundary algorithms, to support this objective. We first provide a background to the theory of stratification and stratified random sampling, and extend this through the derivation of optimal allocation strategies. We then examine the effect of allocation strategies on the variance and design effect of estimators, and in particular find several issues in applying optimal or Neyman allocation when there is little correlation between the survey population and auxiliary information. We present a derivation of the intractable equations for the construction of optimal stratum boundaries, based on the work of Dalenius (1950), and derive the cumulative square root of frequency approximation of Dalenius & Hodges (1957). We then note a number of issues within the implementation of the cumulative square root of frequency rule surrounding the construction of initial intervals, and find that the placement of boundaries and the variance of estimates can be affected by the number of initial intervals. This then leads us to propose two new extensions to the cumulative square root of frequency algorithm, using linear and spline interpolation, and we find that these result in some improvements in the results for this algorithm. We also present a complete derivation of the Ekman algorithm, and consider the extended approach of Hedlin (2000). We derive several new results relating to the Ekman algorithm, and propose a new kernel density based algorithm. We find all three Ekman based algorithms produce similar results for larger populations, and provide some recommendations on the use of these algorithms depending on the size of the population. We look at the derivation and implementation of the Lavallee-Hidiroglou algorithm, and find that it is often slow to converge or does not converge for Neyman allocation. We therefore adopt a random search model of Kozak (2004), and note that the Lavallee-Hidiroglou algorithm generally produces superior results across all populations used in this thesis. We briefly investigate the optimal number of strata by examining the work of Cochran (1977) and Kozak (2006), and find that there is a diminishing marginal effect from increasing the number of strata and possibly some benefit from constructing more than six strata. However we also acknowledge that the cost of constructing such strata may offset any potential gain in precision from constructing more than five or six strata. Finally we consider the how many of these problems can be developed further, and ultimately find that such problems for deciding the number of strata, construction of stratum boundaries, and the allocation of sample units among the strata may require an approach that takes account of the relationship between the auxiliary variable and the survey information. We therefore suggest investigating these algorithms further within the context of a model-assisted environment in order to help account for the relationship between the auxiliary information and survey population.

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Pradhan, Archana. "Economic benefits of the National Cooperative Soil Survey program." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10580.

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Thesis (Ph. D.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains ix, 137 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 122-128).

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Green, Tonya Merlene. "The Refusal Problem and Nonresponse in On-Line Organizational Surveys." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc332568/.

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Although the primary role of the computer has been in processing and analysis of survey data, it has increasingly been used in data collection. Computer surveys are not exempt from a common problem: some refuse to participate. Many researchers and practitioners indicate the refusal problem is less for computer surveys, perhaps due to the novelty of the method. What has not been investigated is the refusal problem when on-line surveys are no longer novel. This research study examines the use of one form of computer-assisted data collection, the electronic or on-line survey, as an organizational research tool. The study utilized historical response data and administered an on-line survey to individuals known to be cooperative or uncooperative in other on-line surveys. It investigated nonresponse bias and response effects of typical responders, periodic participants, and typical refusers within a sample of corporate employees in a computer-interactive interviewing environment utilizing on-line surveys. The items measured included: participation, respondent characteristics, response speed, interview length, perceived versus actual interview length, quantity of data, item nonresponse, item response bias, consistency of response, extremity of response, and early and late response. It also evaluated factors reported as important when deciding to participate, preferred data collection method, and preferred time of display. Past participation, attitudes toward on-line organizational surveys, response burden, and response error were assessed. The overall completion rate of 55.7% was achieved in this study. All effort was made to encourage cooperation of all groups, including an invitation to participate, token, on-line pre-notification, 800 number support, two on-line reminders, support of temporary exit, and a paper follow-up survey. A significant difference in the participation of the three groups was found. Only three demographic variables were found to be significant. No significant differences were found in speed of response, interview length, quantity, item nonresponse, item response bias, consistency, and extremity. Significant differences were found in the perceived and actual times to complete the survey.

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Christian, Leah Melani. "How mixed-mode surveys are transforming social research : the influence of survey mode on measurement in web and telephone surveys." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Summer2007/l_christian_070807.pdf.

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Books on the topic "Survaey"

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Bjurman, Arne. Health and nutrition survey in Lesotho, 1988-1989: Report from a short term mission to the Bureau of Statistics, Maseru, Lesotho, Aug 27 - Sep 22, 1990. [Stockholm? Sweden]: Statistics Sweden, International Consulting Office, 1990.

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Bjurman, Arne. Health and nutrition survey in Lesotho, 1988-1989: Report from a short term mission in Maseru during November, 1989. [Stockholm? Sweden]: Statistics Sweden, International Consulting Office, 1989.

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Linitz, Karen Storin. Survey on the value of user surveys. Buffalo, N.Y: W. S. Hein, 2011.

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United States. Bureau of the Census. Consumer expenditure surveys: Diary interview survey : information booklet. [Washington, D.C.?]: U.S. Dept. of Commerce, Bureau of the Census, 1985.

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SCN, Shalini. Women soliciting change. New Delhi: Indian Social Institute & Joint Women's Programme, 1996.

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United States. Army. Corps of Engineers. Detroit District., ed. Charting the inland seas: A history of the U.S. Lake Survey. [Detroit, Mich.?]: U.S. Army Corps of Engineers, Detroit District, 1991.

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Charting the inland seas: A history of the U.S. Lake Survey. Detroit: Wayne State University Press, 1994.

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Sticht, Thomas G. Using telephone and mail surveys as a supplement or alternative to door-to-door surveys in the assessment of adult literacy. Washington, DC: The Center, 2000.

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United States. Congress. House. Committee on Government Reform. Subcommittee on the Census. The Census Bureau's proposed American Community Survey (ACS): Hearing before the Subcommittee on the Census of the Committee on Government Reform, House of Representatives, One Hundred Seventh Congress, first session, June 13, 2001. Washington: U.S. G.P.O., 2001.

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Dowling, D. B. A condensed summary of the field-work annually accomplished by the officers of the Geological Survey of Canada from its commencement to 1865. [S.l: s.n., 1987.

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Book chapters on the topic "Survaey"

1

Kent, S. M. "A Survey of Surveys." In Unsolved Problems of the Milky Way, 47–55. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1687-6_6.

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Lynn, Peter, and Peter J. Lugtig. "Total Survey Error for Longitudinal Surveys." In Total Survey Error in Practice, 279–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119041702.ch13.

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Hsiao, I.-Han, Shuguang Han, Manav Malhotra, Hui Soo Chae, and Gary Natriello. "Survey Sidekick: Structuring Scientifically Sound Surveys." In Intelligent Tutoring Systems, 516–22. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07221-0_65.

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Hong, Shangqin, Les Oxley, and Philip McCann. "A Survey of the Innovation Surveys." In Innovation, Entrepreneurship, Geography and Growth, 53–78. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118427248.ch4.

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Salvato, Mara, Ralf Bender, and Alvio Renzini. "Survey of Surveys: Past, Present & Future." In Multiwavelength Mapping of Galaxy Formation and Evolution, 343–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/10995020_53.

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Vogel, Raphael. "Eine vertiefte survey-weltliche Perspektive auf Surveys." In Survey-Welten, 363–403. Wiesbaden: Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-25437-7_7.

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Udalski, Andrzej. "Microlensing Surveys for Exoplanet Research (OGLE Survey Perspective)." In Handbook of Exoplanets, 1–20. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-30648-3_123-1.

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Udalski, Andrzej. "Microlensing Surveys for Exoplanet Research (OGLE Survey Perspective)." In Handbook of Exoplanets, 1025–44. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-55333-7_123.

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Le Fevre, O., G. Vettolani, D. Maccagni, J. P. Picat, C. Adami, M. Arnaboldi, S. Bardelli, et al. "Deep Redshift Surveys: The VIMOS VLT Deep Survey (Invited)." In Multiwavelength Cosmology, 7–13. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/0-306-48570-2_1.

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Schipani, P. "The VLT Survey Telescope: What Stands Behind the Surveys." In Astrophysics and Space Science Proceedings, 115–21. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-19330-4_18.

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Conference papers on the topic "Survaey"

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Meese, Nicholas, Juani Swart, Richard Vidgen, Philip Powell, and Chris McMahon. "Addressing Data Collection Problems in Web-Mediated Surveys." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28353.

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Web-based approaches are increasingly being used for carrying out surveys, for example in research or to obtain user feedback in product and systems development. However, the drawbacks of web surveying are often overlooked. Errors in web surveys can be related to sampling, coverage, measurement, and non-response issues. Low response rates and non-response bias are particularly important for web-based surveys. This paper reports on a web-based survey in an international engineering consultancy, aimed at eliciting feedback on the development of systems to support sustainable engineering, that produced a low response rate. To investigate the reasons for this, a follow-up survey was conducted by telephone. The majority of those questioned were unaware of the original survey. The telephone survey showed that reasons for non-completion by those who were aware may be categorized as resources issues, relevance, and fatigue. Differences between those who were aware of the original survey and those who were not are explored and a gap is found between action and intention, i.e. good intentions to complete a survey are very unlikely to translate into action and completed surveys. The paper concludes with practical guidance for administering web-based surveys and observations on the merits of telephone surveys.

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Ripley, H. T. "Hyperspectral survey planning for coastal surveys." In OCEANS 2009. IEEE, 2009. http://dx.doi.org/10.23919/oceans.2009.5422230.

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Khera, Ashish, Arvind Sahasrabudhay, Ajay Jain, and Tushar Budhwar. "Current Industry Gaps Within CP and Coating Surveys." In ASME 2019 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/iogpc2019-4591.

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As per Indian regulations (OISD-STD-141, OISD-2014-SOP, PNGRB T4S, PNGRB IMS etc.), the mandatory requirement for the operators is to perform Cathodic Protection (CP) and/or Coating Integrity above ground survey every five (5) years. The individual Indirect Inspection (IDi) technique or techniques used for such surveys are Closed Interval Survey (CIP) On/ Off, Direct Current Voltage Gradient (DCVG), Current Attenuation Testing (CAT) and Alternating Current Voltage Gradient (ACVG). These techniques primarily assist in evaluating the CP performance, coating condition of the pipeline and locations of probable DC/ AC interferences. Usually these surveys are performed separately and integrated by their respective GPS coordinates to get a common chainage. As per prevailing practice in India, typically the pipeline operators perform a Closed Interval Survey (CIP) On/ Off survey and after reviewing the reports subsequently plan for conducting DCVG, CAT and/or ACVG for certain stretches only, where CIP indications are found. By the time the team is re-mobilized for these surveys the pipeline or environment conditions may be totally different. This may be due to season variability, accuracy of GPS (mapping, if at all conducted during the coating integrity survey), climatic conditions, access to right of way (RoW) due to cultivation / farming cycles, water table variance and eventually fluctuations in the insitu soil resistivity. In addition, interference from other CP sources in the RoW, which may have occurred during interim. All of this can lead to misalignment or incomplete analysis of the integrated consolidated survey data. In addition, these “indirect inspection” surveys are majorly dependent on the experience and training of the surveyor, resulting in extensive subjectivity on the survey results with very limited traceability of collected data. This is unlike the other integrity tools for assessing integrity of a pipeline, such as In-line Inspection (ILI) as well as hydrostatic testing, wherein it is compulsory to provide the pipeline owner recorded footprint of the raw data collected for authenticity. For the CP and coating integrity surveys, if these can be performed simultaneously along with workable recorded raw logs for each survey with recorded GPS position of the surveyor, for further analysis, this does lead to eradicating the subjectivity from the IDi surveyor and providing “true” authentic repeatable results. This paper provides case studies wherein results of legacy IDi surveys are compared to the results of performing all surveys together along with recorded raw logs.

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Gutierrez, David, Nate Anderson, Chad Hanak, Tim Paton, Julia Vallejos, and Nick Brown. "Real-Time Wellbore Placement Improvement with High-Fidelity Trajectory Estimation and Dual-Sensor MWD Packages." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206253-ms.

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Abstract High-fidelity trajectory estimation combined with dual-probe Measurement-While-Drilling (MWD) directional instrumentation provides a solution to minimum curvature’s known inefficiencies in modeling the true wellbore position and definition (Stockhausen & Lesso, 2003). While it may not be cost efficient to increase survey frequency from the industry standard of 30ft-200ft, it is possible using the techniques defined in this research to maintain current survey intervals and increase wellbore placement accuracy while reducing positional uncertainty by up to 45% over the most advanced commercially available magnetic survey correction algorithms. Taking advantage of modern MWD tool platforms enables the installation of an additional (30-inch) survey measurement probe in the existing tool string with a fixed and known offset to the primary survey probe. Directional surveys from both survey probes are telemetered to surface at traditional course length survey intervals in real-time. The two surveys along with the known steering and non-steering intervals are processed through a high-fidelity trajectory estimation algorithm to quantify the wellbore behavior between survey stations. The result is a highly accurate and dense survey listing with modeled trajectory waypoints between traditional surveys to reduce the course length between directional measurement datapoints and better capture the true well path. Through extensive lab modeling, it was determined that the use of the dual-probe MWD package in combination with the high-fidelity trajectory estimation algorithm could result in a reduction in the Ellipse of Uncertainty (EOU) by 20% in the horizontal (semi-major) plane and 45% in the vertical (semi-minor) plane when compared to Multi-Station Analysis (MSA) and BHA Sag survey correction techniques. In addition to proof-of-concept modeling, the system has been deployed and used in real-time application on three separate pads, totaling nine wells. The results were able to validate and exceed baseline goals by exhibiting, on average, a reduction of the EOU by 21% in the horizontal plane and 58% in the vertical plane. Further, True Vertical Depth (TVD) error at well Total Depth (TD) in excess of 10ft was observed on three out of nine wells (33%) in this limited real-time application study. This difference was relative to separate, concurrent processing of the surveys via Multi-Station Analysis (MSA) and BHA sag corrections. This level of increased TVD accuracy is significant in many applications, depending on zone thickness and difficulty of geological interpretation. Increased accuracy and reduced uncertainty result from a better understanding of the true well path between traditional course length surveys. The trajectory estimation algorithm quantifies the rotational build/drop and walk rates in real-time and is reinforced by the dual-probe directional survey measurements. These tendencies can be used to better project forward to the bit as the well is drilled. Improved projection to the bit allows for enhanced recognition of deviation from the well plan and better-informed steering decisions.

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McDonnell, Shamus, Chijioke Ukiwe, Mark McMinn, and Jennifer Purcell. "Performing a Comprehensive Single Pass Multiple Pipeline Survey." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64646.

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This paper presents a discussion of the methodologies and technologies implemented to complete a comprehensive and efficient close interval (CI), depth of cover (DOC) and current attenuation surveys over a new NPS 36 fusion bond epoxy (FBE) coated pipeline influenced by telluric and high frequency AC interference. The DOC and current attenuation survey interval was set to be the same as the CI survey interval (5′) to facilitate detailed profile of the pipeline, and to identify any area where marginal cover or geometric anomalies may exist. By completing both surveys in one pass, there was assurance that the CI readings were taken over the target pipeline. The DOC survey was completed with a continuous data stream from an electromagnetic pipe locator utilizing omni-directional antenna coils. All survey readings were recorded with highly accurate real time GPS to allow time synchronization and geographic information system (GIS) implementation of the survey data. GPS synchronization of the stationary, mobile data loggers and rectifiers were verified with multiple daily waveform analysis. Rectifiers were fitted with SCADA communications and GPS RMUs for remote monitoring and operation. Telluric and high frequency interferences were compensated for through waveform logging at both stationary data log and the remote surveyor points. Optimal readings were determined through advanced statistical analysis of the survey data.

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ElGizawy, Mahmoud, Knut Ness, and Saleel Kolakkodan. "Advanced Wellbore Surveying Technology Extends the Drilling Limits in Offshore Operation." In SPE/IADC Middle East Drilling Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/202138-ms.

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Abstract Wellbore surveying is critical while drilling in order to assure the drilled well is following the plan and is penetrating the geological target. Additionally, wellbore surveying is the key to allowing a well to be drilled safely, avoiding other wells drilled in the same field, and optimizing reservoir production. Standard wellbore surveying accuracy is increasingly inadequate for optimizing the well placement in real time to maximize the reservoir recovery due to maturity of the field. The other disadvantage of the standard wellbore surveying often requires running an additional wellbore surveying tool to improve the accuracy in order to manage the collision avoidance with nearby wells in the same field, introducing unwanted time and costs. Hence, this article presents the advanced wellbore surveying technology that is successfully implemented in offshore fields of Abu Dhabi to overcome the limitations of the standard surveying accuracy without compromising rig time. Magnetic measurement while drilling (MWD) surveys are common standard and utilized in every directional well in this operation. To overcome the standard accuracy limitation, advanced survey correction to the magnetic MWD surveys is introduced. This includes in-field referencing to provide a higher resolution magnetic reference to calculate a more accurate well direction, correction to the effect of the steel components in the bottom hole assembly on the magnetic MWD surveys, correction to the errors associated with survey sensors calibration, and correction to any misalignment between the survey tool and the wellbore. Correcting the surveys in real-time while drilling is the key to placing the well accurately and to avoid offset wells in the close proximity. The details of the corrections methodology are discussed. Advanced magnetic survey correction procedures in real-time are outlined and mapped out. Finally, results of improving the magnetic surveys while drilling in placing the wells and minimizing the collision risk of offset wells are presented. This advanced survey technology allows drilling previously un-drillable wells in these offshore fields, and the allowance for increased density of wells in the reservoir gives the operator opportunity to maximize production recovery and extend the life of reservoir. Higher accuracy of wellbore surveys is an increasing requirement in mature fields to safely allow more accurately placed wellbores with the required production rates. This allows for improved well placement along the trajectory facilitating adjustment at control points and landing points to maximize the hydrocarbon production. In addition, it allows controlling the probability of collision with any nearby wells. The enhanced wellbore surveying accuracy is achieved by advanced magnetic survey corrections in real time. This is controlled by a stringent novel process and communication protocol in order to meet the accuracy objectives.

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Francis, Andrew, Marcus McCallum, Menno T. Van Os, and Piet van Mastrigt. "A New Probabilistic Methodology for Undertaking External Corrosion Direct Assessment." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10092.

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External Corrosion Direct Assessment (ECDA) has now become acknowledged, by the Office of Pipeline Safety (OPS) in North America, as a viable alternative to both in-line inspection (ILI) and the hydrostatic pressure test for the purpose of managing the integrity of high pressure pipelines. Accordingly an ECDA standard is now in existence. The essence of ECDA is to use indirect above ground survey techniques to locate the presence of coating and corrosion defects and then to investigate some of the indications directly by making excavations. However, one of the problems of above ground survey techniques is that they do not locate all defects and are susceptible to false indication. This means that the defects will not be present at all indications and that some defects will be missed. In view of the limitations of above ground survey techniques the ECDA standard requires that at least two complimentary survey techniques should be used. The selected survey techniques will depend on the nature of a particular ‘ECDA segment’, taking account of the surface characteristics. However, in many situations the surveys will include a coating survey and a corrosion survey. In general the outcome from these two surveys will be NH locations at which just the coating survey gives an indication, NC locations at which just the corrosion survey gives an indication and NHC locations at which both surveys give an indication. This paper presents a new probabilistic methodology for estimating the distributions of the actual numbers of coating and corrosion defects, taking account of the outcomes of the surveys and the probabilities of detection and false indication of both techniques. The method also shows how the probabilities of detection and false indication are updated depending on what is found during the excavations and the distributions of the numbers of remaining corrosion and coating defects are subsequently modified. Based on a prescribed repair criterion the analysis is used to determine the probability that at least one remaining corrosion defect will exceed the repair criteria. As excavations are sequentially performed the probability naturally reduces. The attainment of an acceptably low probability is used as a trigger to terminate the excavation programme. A detailed description of the development of the method is given in this paper and the application is illustrated through a simple numerical example. A description of how the method is used to build a Direct Assessment module for a pipeline integrity management system is described in an accompanying paper.

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Weston, John, and Adrián Ledroz. "Combined Gyroscopic and Magnetic Surveys Provide Improved Magnetic Survey Data and Enhanced Survey Quality Control." In SPE/IADC International Drilling Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/194130-ms.

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Dorrell, N. "Effects of Precipitation on Surface-Scan Gamma Ray Survey Results: Case Study." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96120.

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It has been known for many years that certain weather events (e.g., precipitation, low barometric pressure, etc.) can affect the results of outdoor gamma-ray surveys, particularly those where gamma spectroscopy is being used for the detection of uranium and its progeny. These effects are a result of a natural phenomenon that produces anomalous results that are contrary to the true concentrations present at the survey site. Gamma-ray survey results sometimes overestimate uranium concentrations during and immediately following rain or snowfall events. The effects that a precipitation event has upon a drive-over gamma-ray survey are discussed in this paper. Surveys were conducted using a sensitive array of sodium iodide (NaI) detectors mounted to an all-terrain vehicle in late fall/early winter where snow was encountered. Isotope-specific measurements taken before and during precipitation events are compared and visually presented in iso-contour maps.

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Carlson, Lorne, Brent Dorman, and Trevor Place. "Telluric Compensation for Pipeline Test Station Survey on the Alliance Pipeline System." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0762.

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Geomagnetically induced currents (GIC’s), or telluric currents, can have a profound effect on pipe-to-soil measurements during close interval and test station surveys. Previous studies have investigated how to improve close interval survey data with excellent results. This paper discusses a study on improving test station survey data collected on the Alliance pipeline system and the limitations of the methods used.

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Reports on the topic "Survaey"

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Vriniotis, Mary. Victimization Surveys 101: Recommendations for Funding and Implementing a Victimization Survey. Inter-American Development Bank, September 2015. http://dx.doi.org/10.18235/0000156.

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Maxfield, Betty D. DoD Recruiter Survey: Comparative Analyses of the 1991 and 1989 Surveys. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada269690.

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Haggart, J. W., C. A. Hutton, M. Pilkington, and M. D. Thomas. The Geological Survey of Canada's Mountain Pine Beetle Project - airborne surveys. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2010. http://dx.doi.org/10.4095/263390.

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Haggart, J. W., C. A. Hutton, A. Plouffe, J. E. Spratt, J A Craven, and J. F. Cassidy. The Geological Survey of Canada's Mountain Pine Beetle Project - ground surveys. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2010. http://dx.doi.org/10.4095/263391.

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Maxfield, Betty D. DoD Recruiter Survey. Comparative Analyses of the 1991 and 1989 Surveys. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada268672.

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Coyle, M., R. Dumont, P. Keating, F. Kiss, and W. Miles. Geological Survey of Canada aeromagnetic surveys: design, quality assurance, and data dissemination. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/295088.

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Qin, Hua, Yanu Prasetyo, Christine Sanders, Elizabeth Prentice, and Muh Syukron. Perceptions and behaviors in response to the novel coronavirus disease 2019 (COVID-19) : reports on major survey findings. University of Missouri, Division of Applied Social Sciences, 2020. http://dx.doi.org/10.32469/10355/79261.

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The United States has been affected by an extensive novel coronavirus (COVID-19) outbreak since March 2020. On March 9, 2020 we started an online survey of people’s perceptions and behaviors related to this issue in Missouri and adjacent states (Kansas, Iowa, Illinois, and Arkansas). The survey was ended on June 9, 2020 and in total 7,392 surveys were completed. In order to assess how attitudes and behaviors related to COVID-19 may change over time, two follow-up surveys were conducted with those respondents who indicated interest in the re-surveys and provided an email address. These two working reports summarize major results of the initial survey and three survey waves, including respondents’ perceived severity of the COVID-19 outbreak, sources of information, knowledge about COVID-19, perceptions of COVID-19 risk, satisfaction with management entities, and preventive actions.

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Doll, W. E., J. E. Nyquist, A. D. King, D. T. Bell, J. S. Holladay, V. F. Labson, and L. Pellerin. Aerial remote sensing surveys progress report: Helicopter geophysical survey of the Oak Ridge Reservation. Office of Scientific and Technical Information (OSTI), March 1993. http://dx.doi.org/10.2172/10145088.

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Doll, W. E., J. E. Nyquist, A. D. King, D. T. Bell, J. S. Holladay, V. F. Labson, and L. Pellerin. Aerial remote sensing surveys progress report: Helicopter geophysical survey of the Oak Ridge Reservation. Office of Scientific and Technical Information (OSTI), March 1993. http://dx.doi.org/10.2172/6532219.

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King, A. L., D. J. Awl, and C. A. Gabrielsen. Environmentally Sensitive Areas Surveys Program threatened and endangered species survey: Progress report. Environmental Restoration Program. Office of Scientific and Technical Information (OSTI), September 1994. http://dx.doi.org/10.2172/10189798.

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