滩坝砂特低渗透油藏CO_2驱油技术及应用
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摘要
针对滩坝砂特低渗透油藏CO_2驱面临混相难、波及系数低等问题,综合运用地质学、渗流力学和油藏工程等理论和方法,采用物理模拟和数学模拟相结合的手段,制定了CO_2驱评价标准,明晰了CO_2驱提高采收率机理,形成了CO_2驱井网适配优化设计技术,优化了示范区高89-1块CO_2驱技术政策界限。实践表明,技术应用效果良好,截至目前,CO_2驱油与封存示范区累计注入CO_2 2.8×10~5t,累计增油6.5×10~4t,封存CO_2 2.6×10~5t。
To solve the problems of difficult miscibility and low sweep coefficient in CO_2 flooding of ultra-low permeability beachbar sand reservoir, theories and methods such as geology, seepage mechanics and reservoir engineering and by the combined methods of physical modeling and mathematical simulation are used to formulate the evaluation standard of CO_2 flooding, clarify the EOR mechanism of CO_2 flooding, form the optimum design technique adapted for the well pattern of CO_2 flooding, and optimize the policy limitation of CO_2 flooding in the demonstration zone Gao 89-1 block. It is indicated that the technology has been applied effectively. Up to now, over 2.8×10~5 t of CO_2 have successfully been injected into the reservoir, and the cumulative oil increment is 6.5×10~4 t, and 2.6×10~5 t of CO_2 have been stored in CO_2 flooding and storage demonstration zone.
To solve the problems of difficult miscibility and low sweep coefficient in CO_2 flooding of ultra-low permeability beachbar sand reservoir, theories and methods such as geology, seepage mechanics and reservoir engineering and by the combined methods of physical modeling and mathematical simulation are used to formulate the evaluation standard of CO_2 flooding, clarify the EOR mechanism of CO_2 flooding, form the optimum design technique adapted for the well pattern of CO_2 flooding, and optimize the policy limitation of CO_2 flooding in the demonstration zone Gao 89-1 block. It is indicated that the technology has been applied effectively. Up to now, over 2.8×10~5 t of CO_2 have successfully been injected into the reservoir, and the cumulative oil increment is 6.5×10~4 t, and 2.6×10~5 t of CO_2 have been stored in CO_2 flooding and storage demonstration zone.
引文
[1] Shaw J, Bachu S. Screening, evaluation, and ranking of oil reservoirs suitable for CO2-flooding EOR and carbon dioxide sequestration[J]. Journal of Canadian Petroleum Technology, 2002, 41(9):51-61.
[2] Johnston J W. A review of the Willard(San Andres)unit CO2 injection project[C]//paper SPE-6388-MS presented at the SPE Permian Basin Oil and Gas Recovery Conference, 10-11 March1977, Midland, Texas, USA.
[3] Holm I W. Carbon dioxide solvent flooding for increased oil recovery[J]. Petroleum Transactions, AIME, 1959, 216:225-231.
[4] Holm I W, Brien I J. Carbon dioxide test at the Mead-Strawn field[J].JournalofPetroleumTechnology, 1971,23(4):431-442.
[5] Cameron J T. Sacroc carbon dioxide injection:A progress report[C]//paper API-76-B001 presented at the Annual Meeting Papers, Division of Production, 4-7 April 1976, Los Angeles, California, USA.
[6]高慧梅,何应付,周锡生.注二氧化碳提高原油采收率技术研究进展[J].特种油气藏,1997,19(2):55-61.
[7]李士伦,周守信,杜建芬,等.国内外注气率技术回顾与展望[J].油气地质与采收率,2002,9(2):1-5.
[8] Chao Zhongtang, Chen Oirong, Liu Aiwu, et al. Laboratory study of enhanced oil recovery mechanism of CO2injection[J]. Journal of Jianghan Petroleum Institute, 2003, 25:66-67.
[9]郝永卯,薄启炜,陈月明. CO2驱油实验研究[J].石油勘探与开发,2005,32(2):110-112.
[10]李振泉,李相远,袁明琦,等.商13-22单元CO2驱室内实验研究[J].油气采收率技术,2000,7(3):9-11.
[11] John D Rogers. Technology Focus:CO2 applications[J]. Journal of Petroleum Technology, 2011, 63, 7:112-113.
[12] Ghedan S G. Global laboratory experience of CO2-EOR flooding[C]//paper SPE-125581-MS presented at the SPE/EAGE Reservoir Characterization and Simulation Conference, 19-21 October 2009, Abu Dhabi, UAE.
[13] Wu Y, Carroll J C, Li Q. Gas injection for disposal and enhanced recovery[M]. New York:Wiley, 2014.
[2] Johnston J W. A review of the Willard(San Andres)unit CO2 injection project[C]//paper SPE-6388-MS presented at the SPE Permian Basin Oil and Gas Recovery Conference, 10-11 March1977, Midland, Texas, USA.
[3] Holm I W. Carbon dioxide solvent flooding for increased oil recovery[J]. Petroleum Transactions, AIME, 1959, 216:225-231.
[4] Holm I W, Brien I J. Carbon dioxide test at the Mead-Strawn field[J].JournalofPetroleumTechnology, 1971,23(4):431-442.
[5] Cameron J T. Sacroc carbon dioxide injection:A progress report[C]//paper API-76-B001 presented at the Annual Meeting Papers, Division of Production, 4-7 April 1976, Los Angeles, California, USA.
[6]高慧梅,何应付,周锡生.注二氧化碳提高原油采收率技术研究进展[J].特种油气藏,1997,19(2):55-61.
[7]李士伦,周守信,杜建芬,等.国内外注气率技术回顾与展望[J].油气地质与采收率,2002,9(2):1-5.
[8] Chao Zhongtang, Chen Oirong, Liu Aiwu, et al. Laboratory study of enhanced oil recovery mechanism of CO2injection[J]. Journal of Jianghan Petroleum Institute, 2003, 25:66-67.
[9]郝永卯,薄启炜,陈月明. CO2驱油实验研究[J].石油勘探与开发,2005,32(2):110-112.
[10]李振泉,李相远,袁明琦,等.商13-22单元CO2驱室内实验研究[J].油气采收率技术,2000,7(3):9-11.
[11] John D Rogers. Technology Focus:CO2 applications[J]. Journal of Petroleum Technology, 2011, 63, 7:112-113.
[12] Ghedan S G. Global laboratory experience of CO2-EOR flooding[C]//paper SPE-125581-MS presented at the SPE/EAGE Reservoir Characterization and Simulation Conference, 19-21 October 2009, Abu Dhabi, UAE.
[13] Wu Y, Carroll J C, Li Q. Gas injection for disposal and enhanced recovery[M]. New York:Wiley, 2014.
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