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- W4244650923 abstract "Testing of Gas Condensate Reservoirs - Sampling, Test Design and Analysis Henk Kool; Henk Kool Halliburton Energy Services, Inc. Search for other works by this author on: This Site Google Scholar Mehdi Azari; Mehdi Azari Halliburton Energy Services, Inc. Search for other works by this author on: This Site Google Scholar M.Y. Soliman; M.Y. Soliman Halliburton Energy Services, Inc. Search for other works by this author on: This Site Google Scholar Mark A. Proett; Mark A. Proett Halliburton Energy Services, Inc. Search for other works by this author on: This Site Google Scholar Cyrus A. Irani; Cyrus A. Irani Westport Technology Center International Search for other works by this author on: This Site Google Scholar Bjørn Dybdahl Bjørn Dybdahl Petrotech ASA Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, April 2001. Paper Number: SPE-68668-MS https://doi.org/10.2118/68668-MS Published: April 17 2001 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Kool, Henk, Azari, Mehdi, Soliman, M.Y., Proett, Mark A., Irani, Cyrus A., and Bjørn Dybdahl. Testing of Gas Condensate Reservoirs - Sampling, Test Design and Analysis. Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, April 2001. doi: https://doi.org/10.2118/68668-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Asia Pacific Oil and Gas Conference and Exhibition Search Advanced Search AbstractTesting of gas condensate reservoirs requires careful coordination of all parameters in the analytical process. Therefore, the sampling procedure, the laboratory analysis of the collected samples, the design of the testing equipment, and the design and analysis of the test itself are all critical to the accuracy of the analysis. This paper will outline the methodology and procedures used in testing gas condensate reservoirs.Obtaining a representative formation fluid sample that may be used for compositional and pressure-volume-temperature (PVT) analysis is crucial in testing gas condensate reservoirs. In most cases, this means maintaining a monophasic sample as close as possible to actual reservoir conditions. New sampling technologies have been introduced that improve the quality of the initial sample and can maintain the sample integrity. Additionally, new downhole sensor technologies show promise of improving sample contamination estimates and making in-situ fluid property measurements. The various sampling techniques are discussed, and comparisons of processes that include wireline formation testing and bottomhole sampling, isokinetic sampling used in drillstem and production testing, and surface sampling are made.Laboratory testing procedures including sample quality validation, error propagation, and sample contamination are also discussed.The flow of gas condensate in a reservoir is a complicated mathematical problem involving phase changes, condensate loss into the small pores of the rock, multi-phase-flow of the wet gas oil and possibly water, phase redistribution in and around the wellbore, and finally, liquid vaporization back into the condensate gas. A well test can provide identification of the absolute reservoir and relative permeabilities, the source of declining gas permeability, near wellbore damage, and the reservoir pressure. It can also distinguish the extent of the liquid-condensate bank that forms a composite reservoir, as well as the location of the nearby boundaries.The analysis procedure and techniques will be illustrated through presentation of two field cases. In the first case, the flowing pressure is above the dewpoint pressure. Thus, the fluid inside the reservoir is a single-phase gas, and liquid dropout causes phase segregation in the wellbore. In the second case, the well is producing below the dewpoint pressure while the original reservoir pressure is above the dewpoint pressure. This caused the well test to resemble that of a composite reservoir with earlier phase-segregation effects.IntroductionPVT analysis is the study of hydrocarbons and the effects of pressure and temperature on the volume of hydrocarbons. As hydrocarbon flows inside the reservoir wellbore and into production facilities, it undergoes several changes. The changes that take place in the physical qualities not only relate to temperature, pressure and volume of the fluid but also can concern phase changes. A hydrocarbon is a multi-system component that has a complex phase behavior. This phase behavior will be dictated by its composition. Based on this composition, a hydrocarbon may be classified as black oil, volatile oil, retrograde condensate gas, wet gas, or even dry gas.1 In this paper, attention will be directed toward gas condensate reservoirs. Keywords: pvt measurement, reservoir fluid, spe 68668, dewpoint, permeability, reservoir, condensate, reservoir pressure, gas condensate reservoir, gas condensate well Subjects: Fluid Characterization, Formation Evaluation & Management, Phase behavior and PVT measurements, Drillstem/well testing This content is only available via PDF. 2001. Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
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- W4244650923 title "Testing of Gas Condensate Reservoirs - Sampling, Test Design and Analysis" @default.
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