埕岛油田低级序断层综合识别及其在注水开发中的应用
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摘要
受多期构造活动的影响,埕岛油田发育较多利用常规手段难以识别的低级序断层,在油田开发中后期对于精细注水开发造成了很大的影响。综合利用多种叠后地震资料处理技术,对低级序断层进行了识别,并结合精细地层对比及油藏动态资料分析等方法,对低级序断层进行验证和刻画。结果表明,低级序断层与高级序断层在剖面上和平面上形成了多种组合样式,依据形成的应力不同将其分为拉张正断层、拉张-走滑断层和走滑断层3类,拉张正断层主要分布在高级序断层的上盘,拉张-走滑断层与走滑断层则主要分布在高级序断层的两侧。通过低级序断层的识别,有效解决了埕岛油田西北区4A井组Ng_3~1层的注采对应矛盾和北区Ng_(1+2)~3层的油水关系矛盾,除此之外,在油田开发后期,低级序断层对剩余油的分布具有一定的控制作用,研究低级序断层对于指导剩余油挖潜具有重要的意义。
Multi-stage tectonic activities results in abundant low-order faults in the Chengdao Oilfield. These low-order faults cannot be accurately identified by conventional means and significantly influence the fine waterflooding performance in the middle-late development stage. Multiple post-stack seismic data processing techniques were used to identify these low-order faults. Fine stratigraphic correlation and reservoir production analysis were also adopted to verify and characterize these low-order faults. Result indicates that there are multiple combination patterns of low-order and high-order faults along the lateral and longitudinal directions. These faults can be classified into three categories according to the initial stress,including tensile normal fault,tensile-slip fault and strike-slip fault. The tensile-normal fault mainly distributes on the upper wall of high-order fault. Tensile-slip and strike-slip faults mainly distribute on the both sides of high-order fault. Comprehensive identification of the low-order faults effectively improves the injection-production contradictions of Layer Ng_3~1 and Layer Ng_(1+2)~3 of the Wellgroup 4A in northwestern Chengdao Oilfield. In addition,the remaining oil distribution is also dependent on the low-order fault in the late development stage. This low-order fault research is of great significance for the recovery of remaining oil.
Multi-stage tectonic activities results in abundant low-order faults in the Chengdao Oilfield. These low-order faults cannot be accurately identified by conventional means and significantly influence the fine waterflooding performance in the middle-late development stage. Multiple post-stack seismic data processing techniques were used to identify these low-order faults. Fine stratigraphic correlation and reservoir production analysis were also adopted to verify and characterize these low-order faults. Result indicates that there are multiple combination patterns of low-order and high-order faults along the lateral and longitudinal directions. These faults can be classified into three categories according to the initial stress,including tensile normal fault,tensile-slip fault and strike-slip fault. The tensile-normal fault mainly distributes on the upper wall of high-order fault. Tensile-slip and strike-slip faults mainly distribute on the both sides of high-order fault. Comprehensive identification of the low-order faults effectively improves the injection-production contradictions of Layer Ng_3~1 and Layer Ng_(1+2)~3 of the Wellgroup 4A in northwestern Chengdao Oilfield. In addition,the remaining oil distribution is also dependent on the low-order fault in the late development stage. This low-order fault research is of great significance for the recovery of remaining oil.
引文
[1]王世艳,邓玉珍,张海娜.陆相储集层微型构造研究[J].石油勘探与开发,2000,27(6):79-80.
[2]李伟,吴智平,张明华,等.埕岛地区中生代和新生代断层发育特征及其对沉积的控制作用[J].中国石油大学学报(自然科学版),2006,30(1):1-6.
[3]刘显太,李军,王军,等.低序级断层识别与精细描述技术研究[J].特种油气藏,2013,20(1):44-47.
[4]赵红兵,严科.深度开发油藏低级序断层综合识别方法及应用[J].西南石油大学学报(自然科学版),2010,32(5):54-57.
[5]陈明强,袁昭,郭宏,等.鄯善油田东区注水开发中断层对剩余油分布的控制作用[J].西南石油大学学报(自然科学版),2013,28(6):55-58.
[6]吴琼.新立油田断层附近高效调整井部署方式研究[J].特种油气藏,2012,19(4):73-76.
[7]侯甫,杨少春,路智勇,等.东辛油田永3断块低级序断层特征及其对注水开发的影响[J].断块油气田,2015,22(4):488-491.
[8]王立军,刘强,李红伟,等.同生断层和微构造对油井产能和剩余油分布的影响[J].大庆石油地质与开发,2011,30(2):61-64.
[9]王延忠,陆相水驱油藏断层分割与剩余油富集研究[J].油气地质与采收率,2006,13(2):78-84.
[10]段友祥,曹婧,孙岐峰.自适应倾角导向技术在断层识别中的应用[J].岩性油气藏,2017,29(4):101-107.
[11]夏冰.地震新技术在低级序断层识别中的应用[J].断块油气田,2007,14(2):24-26.
[12]戴俊生,张继标,冯建伟,等.高邮凹陷真武断裂带西部低级序断层发育规律预测[J].地质力学学报,2012,18(1):11-21.
[13]张昕,甘利灯,刘文岭,等.密井网条件下井震联合低级序断层识别方法[J].石油地球物理勘探,2012,47(3):462-468.
[14]吕双兵.井震联合断层识别技术及其应用---以杏北油田为例[J].地球物理学进展,2015,30(5):2000-2005.
[15]周冬林,杨海军,李建君,等.盐岩地层地应力测试方法[J].油气储运,2017,36(12):1385-1390.
[16]罗群,黄捍东,王保华,等.低序级断层的成因类型特征与地质意义[J].油气地质与采收率,2007,14(3):19-21.
[17]刘啸奔,张宏,李勐,等.断层作用下埋地管道应变分析方法研究进展[J].油气储运,2016,35(8):799-807.
[18]韩银杉,张宏.走滑断层作用下管道应变解析计算方法的适用性[J].油气储运,2016,35(12):1329-1336.
[19]刘啸奔,张宏,吴锴.逆断层作用下X80埋地管道的非线性屈曲分析[J].油气储运,2017,36(1):98-107.
[20]王皆明,赵凯,李春,等.气顶油藏型地下储气库注采动态预测方法[J].天然气工业,2016,36(7):88-92.
[21]杨少春,杨柏,潘少伟,等.宁海油田微型构造及其对剩余油分布的影响[J].大庆石油地质与开发,2009,28(2):40-44.
[22]樊晓东,李忠权,贾红兵,等.反向正断层对油田开发布井的影响[J].特种油气藏,2016,23(5):93-95.
[23]付广,王明臣,李世朝.断层岩封闭性演化阶段确定方法及其应用[J].天然气工业,2017,37(10):11-16.
[2]李伟,吴智平,张明华,等.埕岛地区中生代和新生代断层发育特征及其对沉积的控制作用[J].中国石油大学学报(自然科学版),2006,30(1):1-6.
[3]刘显太,李军,王军,等.低序级断层识别与精细描述技术研究[J].特种油气藏,2013,20(1):44-47.
[4]赵红兵,严科.深度开发油藏低级序断层综合识别方法及应用[J].西南石油大学学报(自然科学版),2010,32(5):54-57.
[5]陈明强,袁昭,郭宏,等.鄯善油田东区注水开发中断层对剩余油分布的控制作用[J].西南石油大学学报(自然科学版),2013,28(6):55-58.
[6]吴琼.新立油田断层附近高效调整井部署方式研究[J].特种油气藏,2012,19(4):73-76.
[7]侯甫,杨少春,路智勇,等.东辛油田永3断块低级序断层特征及其对注水开发的影响[J].断块油气田,2015,22(4):488-491.
[8]王立军,刘强,李红伟,等.同生断层和微构造对油井产能和剩余油分布的影响[J].大庆石油地质与开发,2011,30(2):61-64.
[9]王延忠,陆相水驱油藏断层分割与剩余油富集研究[J].油气地质与采收率,2006,13(2):78-84.
[10]段友祥,曹婧,孙岐峰.自适应倾角导向技术在断层识别中的应用[J].岩性油气藏,2017,29(4):101-107.
[11]夏冰.地震新技术在低级序断层识别中的应用[J].断块油气田,2007,14(2):24-26.
[12]戴俊生,张继标,冯建伟,等.高邮凹陷真武断裂带西部低级序断层发育规律预测[J].地质力学学报,2012,18(1):11-21.
[13]张昕,甘利灯,刘文岭,等.密井网条件下井震联合低级序断层识别方法[J].石油地球物理勘探,2012,47(3):462-468.
[14]吕双兵.井震联合断层识别技术及其应用---以杏北油田为例[J].地球物理学进展,2015,30(5):2000-2005.
[15]周冬林,杨海军,李建君,等.盐岩地层地应力测试方法[J].油气储运,2017,36(12):1385-1390.
[16]罗群,黄捍东,王保华,等.低序级断层的成因类型特征与地质意义[J].油气地质与采收率,2007,14(3):19-21.
[17]刘啸奔,张宏,李勐,等.断层作用下埋地管道应变分析方法研究进展[J].油气储运,2016,35(8):799-807.
[18]韩银杉,张宏.走滑断层作用下管道应变解析计算方法的适用性[J].油气储运,2016,35(12):1329-1336.
[19]刘啸奔,张宏,吴锴.逆断层作用下X80埋地管道的非线性屈曲分析[J].油气储运,2017,36(1):98-107.
[20]王皆明,赵凯,李春,等.气顶油藏型地下储气库注采动态预测方法[J].天然气工业,2016,36(7):88-92.
[21]杨少春,杨柏,潘少伟,等.宁海油田微型构造及其对剩余油分布的影响[J].大庆石油地质与开发,2009,28(2):40-44.
[22]樊晓东,李忠权,贾红兵,等.反向正断层对油田开发布井的影响[J].特种油气藏,2016,23(5):93-95.
[23]付广,王明臣,李世朝.断层岩封闭性演化阶段确定方法及其应用[J].天然气工业,2017,37(10):11-16.