微地震水力压裂监测技术在浅层石炭系火山岩油藏中的应用
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摘要
针对克拉玛依油田J230井区石炭系火山岩油藏水力压裂过程中人工造缝监测资料比较缺乏,不能很好评价压裂效果的问题,基于微地震监测技术的基本原理和方法,利用监测结果对压裂效果、裂缝产状、转向压裂等进行分析评价,并对分层压裂数据进行解释,同时结合井口压力监测,可获得闭合压力、液体滤失系数、液体效率以及裂缝宽度等成果。实现了对浅层石炭系火山岩油藏压裂开发效果的实时评价,为该类油藏措施方案的优选、注采单元的整体治理及提高采收率提供了参考依据。
The monitoring data of artificial fractures during hydraulic fracturing in Well block J230 Carboniferous volcanic rock reservoir in Karamay Oilfield were limited,which could not effectively evaluate the fracturing results.Based on the basic principle of microseismic monitoring technique,the fracturing results,fracture occurrence and deflection fracturing were analyzed and the separate layer fracturing data were interpreted with the monitored results.Combined with wellhead pressure monitoring,the closure pressure,fluid loss coefficient,fluid efficiency and fracture width,etc.could be obtained.This technique allows for the real time evaluation of fracturing results for shallow Carboniferous volcanic rock reservoirs,providing bases for the optimal selection of stimulation measures,overall treatment of flooding units and improving recovery of similar reservoirs.
The monitoring data of artificial fractures during hydraulic fracturing in Well block J230 Carboniferous volcanic rock reservoir in Karamay Oilfield were limited,which could not effectively evaluate the fracturing results.Based on the basic principle of microseismic monitoring technique,the fracturing results,fracture occurrence and deflection fracturing were analyzed and the separate layer fracturing data were interpreted with the monitored results.Combined with wellhead pressure monitoring,the closure pressure,fluid loss coefficient,fluid efficiency and fracture width,etc.could be obtained.This technique allows for the real time evaluation of fracturing results for shallow Carboniferous volcanic rock reservoirs,providing bases for the optimal selection of stimulation measures,overall treatment of flooding units and improving recovery of similar reservoirs.
引文
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[3]董世太,高红霞.微地震监测技术及其在油田开发中的应用[J].石油仪器,2004,18(5):5-8.
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[5]王建华,李迎九,陈栗,等.微地震波监测技术在水驱前缘与裂缝研究中的应用———以乾安油田为例[J].油气地质与采收率,2007,14(4):56-58.
[6]王长江,姜汉桥,张洪辉,等.水平井压裂裂缝监测的井下微地震技术[J].特种油气藏,2008,15(3):90-92.
[7]李国永,朱福金,任利斌,等.微地震注水前缘监测技术在高尚堡中深层油藏的应用[J].特种油气藏,2010,17(5):104-106.
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[9]刘建中,王春耘,刘继民,等.用微地震法监测油田生产动态[J].石油勘探与开发,2004,31(2):71-73.
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