Development characteristics and dynamic prediction of near critical reservoirs——By taking Bohai BZ oilfield as an example
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摘要: 由于近临界态油气藏油气变化规律较常规油气藏更加复杂,常规油藏工程方法预测的油气采出程度和生产气油比与实际偏差大,动态预测难度大。本文通过分析影响近临界态油气藏流体特征、开发规律等因素,基于广义物质平衡方程和低界面张力下的油气两相渗透率曲线,建立近临界态油气藏动态预测的新方法。研究结果表明,改进的新方法由于同时考虑了溶解气油比和挥发油气比的双重作用,以及低界面张力下的油气相渗变化特征,所计算的油相采出程度和瞬时气油比更符合实际生产动态,预测油气采出规律和采收率更加准确,研究成果对类似油气藏的开发具有一定的指导意义。Abstract: Due to the fact that the variation law of oil and gas in near critical state reservoirs is more complex than that in conventional reservoirs, the deviation of oil and gas recovery degree and production gas oil ratio predicted by conventional reservoir engineering method is large, and dynamic prediction is difficult. Based on the generalized material balance equation and oil-gas two-phase permeability curve under low interfacial tension, a new dynamic prediction method for near critical reservoir is established by analyzing the factors affecting the fluid characteristics and development law of near critical reservoir. The results show that the oil recovery degree and instantaneous gas oil ratio calculated by the improved new method are more in line with the actual production performance, and the prediction of oil-gas recovery law and recovery rate is more accurate because of the dual effects of dissolved gas oil ratio and volatile oil gas ratio, as well as the change characteristics of oil-gas phase permeability under low interfacial tension. The research results have certain guiding significance for the development of similar reservoirs.
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Key words:
- near critical /
- produced gas oil ratio /
- interfacial tension /
- dynamic prediction
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侯大力,高黎惠,刘浩成,等.近临界态凝析气藏地层流体特殊相态行为[J].天然气工业,2013,33(11):68-73. 傅秀娟,孙志道,刘菊,等.花场近临界油气藏流体相态和开采特征[J].石油学报,2007,28(6):96-98. 沈平平,郑希潭,李实,等.富凝析气近临界特征的试验研究[J].石油学报,2001,22(3):47-51. 焦玉卫,李保柱,李勇,等.凝析气藏生产气油比混沌时间序列预测方法[J].重庆科技学院学报(自然科学版), 2010,12(5):19-21. 李方明,田中元,蒋阿明,等.利用LWD测井资料预测油藏衰竭程度和生产气油比[J].石油勘探与开发, 2009,36(5):617-622. 李骞,李相方,单江,等.凝析气藏生产过程中气油比异常原因分析[J].天然气工业,2011,31(6):63-65. 罗凯,方义生,宋文杰,等.凝析油气低界面张力对凝析油流动的影响[J].石油勘探与开发,1999,8(4):77-79. 胡永乐. 凝析、低渗气藏流体相态与渗流机理[M]. 北京:科学出版社,2010. WALSH M P. A generalized approach to reservoir material balance calculations[J]. Journal of Canadian Petroleum Technology,1995,34(1):55-63. MARK P,BRIAN F,许玉春,等.计算凝析油(气藏) PVT特性的新方法[J]. 特种油气藏, 1997, 4(1):57-61. MARK P,赵炜,王世谦.应用新的经过完善的方程式计算挥发油藏及凝析气藏的储量[J].天然气勘探与开发,1995,18(1):47-55. 郭平,杜志敏,苏畅,等.富含凝析油型凝析气藏衰竭开发采收率研究[J].天然气工业,2004,24(11):94-96. 王连山,陈军,程汉列.塔中缝洞型碳酸盐岩凝析气藏气油比变化及见水预警[J].石油地质与工程,2017,31(2):94-96. 杨宝泉,苑志旺,杨莉,等.挥发性油藏注天然气开发指标预测新模型[J].油气藏评价与开发, 2013, 3(6):19-23. 毕建霞,戚志林,郭平,等.降压开采过程中凝析油气相渗实验研究[J].天然气工业,2006,26(10):108-110. 李广月,郭平,林春明.不同类型凝析气藏在低渗多孔介质中的相态及采收率研究[J]. 石油学报, 2006, 27(1):73-76. 孙风景.多孔介质中凝析油气衰竭开发及相渗实验研究[D].四川成都:西南石油学院,2003. 沈平平,郑希潭,李实,等.近临界流体异常的反凝析相变[J].石油勘探与开发,2001,28(1):72-74. 妥宏,甄亚丽,李遇江,等.卡因迪克油田挥发性油藏流体特征分析[J].特种油气藏, 2006, 13(5):71-74. 生如岩,丁良成,张伟伟.广义物质平衡计算在凝析气藏开采动态预测中的应用[J].中国海上油气地质, 2002, 16(2):61-65. 蔡珺君,唐青松,欧家强,等.考虑水侵的异常高压气藏流动物质平衡[J].断块油气田,2019,26(5):596-600. 王高峰,姚杰,王昊,等.低渗透油藏混相气驱生产气油比预测[J].油气藏评价与开发,2019,9(3):14-18. -

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