直罗油田水平井地质导向技术研究及应用
|
摘要
直罗油田水平井水平段钻进过程中地质导向存在沉积微相不明、鼻状隆起发育、油层预测难度大等地质风险。针对以上技术难点,结合直罗油田的地质认识和开发数据,形成了配套的水平井地质导向技术。通过邻井资料分析对比,对水平段延伸方向储层构造和砂体连通性进行大局控制;通过随钻伽马与录井岩屑,对储层微构造及连通性进行实时精细对比;通过大局控制,局部精细对比,提前预测储层,及时调整井眼轨迹,提高油层钻遇率。上述地质导向技术应用于现场68口水平井钻井过程中,取得了平均油层钻遇率91.5%的开发效果。
In Zhiluo oilfield,Drilling of horizontal well is accompanied by some geological risks which contains unclear sedimentary microfacies,development of nasal uplift forecast of oil layer with big error,etc.Aimed at these technical difficulties,a supporting horizontal geosteering technology has been put forward based on geological knowledge and developing data.Through the analysis and comparison of the adjacent wells,the reservoir structure and the sand body are controlled in the horizontal direction;reservoir microstructure and connectivity are compared by drilling gamma-ray and mud logging;Through the overall controlling,local fine comparison,predicting the reservoir in advance and timely adjustment of the well trajectory,Drilling rate of oil layer will be improved.The above-mentioned geological guidance technology is applied the drilling process of 68 horizontal wells in the field,and the average oilfield drilling rate was 91.5%.
In Zhiluo oilfield,Drilling of horizontal well is accompanied by some geological risks which contains unclear sedimentary microfacies,development of nasal uplift forecast of oil layer with big error,etc.Aimed at these technical difficulties,a supporting horizontal geosteering technology has been put forward based on geological knowledge and developing data.Through the analysis and comparison of the adjacent wells,the reservoir structure and the sand body are controlled in the horizontal direction;reservoir microstructure and connectivity are compared by drilling gamma-ray and mud logging;Through the overall controlling,local fine comparison,predicting the reservoir in advance and timely adjustment of the well trajectory,Drilling rate of oil layer will be improved.The above-mentioned geological guidance technology is applied the drilling process of 68 horizontal wells in the field,and the average oilfield drilling rate was 91.5%.
引文
[1]陈凤喜,王勇,费世祥,等.低渗透气藏水平井优化部署及地质导向钻进方法研究与实践——以苏里格气田东区南部为例[J].石油科技论坛,2013,32(5):6-11.
[2]苏义脑.地质导向钻井技术概况及其在我国的研究进展[J].石油勘探与开发,2005,32(1):92-95.
[3]窦松江,赵平起.水平井随钻地质导向方法的研究与应用[J].海洋石油,2009,29(4):77-82.
[4]EpovMI,Mironov VL,MuzalevskiyK V,etal.Ageosteering tool for horizontal well logging[J].Russian Geology and Geophysics,2013,54(9):1103-1107.
[5]赵国权,刘鹏,赵永生,等.地质导向在随钻管理中的应用和效果[J].石油科技论坛,2011,30(1):18-20.
[6]肖晓光,李群.鄂尔多斯盆地直罗油田长8油层组储层特征研究[J].中国地质,2014,30(1):187-196.
[7]闫帅,王桂成,常伟丽,等.直罗油田三叠系延长组长8段油气成藏条件分析[J].天然气勘探与开发,2015,12(1):16-19.
[8]苏义脑.水平井井眼轨道控制[M].北京:石油工业出版社,2000.
[9]雷宇田,韩詹,李卫兵,等.提高油层钻遇率方法研究[J].新疆石油科技,2014,24(1):7-9.
[10]闫振来,韩来聚,李作会,等.胜利油田水平井地质导向钻井技术[J].石油钻探技术,2008,36(1):3-7.
[2]苏义脑.地质导向钻井技术概况及其在我国的研究进展[J].石油勘探与开发,2005,32(1):92-95.
[3]窦松江,赵平起.水平井随钻地质导向方法的研究与应用[J].海洋石油,2009,29(4):77-82.
[4]EpovMI,Mironov VL,MuzalevskiyK V,etal.Ageosteering tool for horizontal well logging[J].Russian Geology and Geophysics,2013,54(9):1103-1107.
[5]赵国权,刘鹏,赵永生,等.地质导向在随钻管理中的应用和效果[J].石油科技论坛,2011,30(1):18-20.
[6]肖晓光,李群.鄂尔多斯盆地直罗油田长8油层组储层特征研究[J].中国地质,2014,30(1):187-196.
[7]闫帅,王桂成,常伟丽,等.直罗油田三叠系延长组长8段油气成藏条件分析[J].天然气勘探与开发,2015,12(1):16-19.
[8]苏义脑.水平井井眼轨道控制[M].北京:石油工业出版社,2000.
[9]雷宇田,韩詹,李卫兵,等.提高油层钻遇率方法研究[J].新疆石油科技,2014,24(1):7-9.
[10]闫振来,韩来聚,李作会,等.胜利油田水平井地质导向钻井技术[J].石油钻探技术,2008,36(1):3-7.