三角洲前缘河口坝单砂体划分及剩余油分布
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摘要
针对油田开发中后期剩余油分布复杂、挖潜难度增大的问题,以渤海湾盆地S油田东营组二段下亚段为例,综合应用岩心、测井、水淹解释和生产动态等资料,对三角洲河口坝复合体内部单砂体进行定量表征,并分析其对剩余油分布的控制作用。研究结果表明:研究区河口坝单砂体平面接触样式分别为河坝接触、坝主体接触、坝缘接触和坝间泥接触。河坝接触和坝主体接触的砂体连通性较好,剩余油不富集;坝缘接触和坝间泥接触的砂体连通性差或不连通,在其侧翼易形成剩余油。该研究可有效地指导油田后期综合调整工作。
Aiming at the complex remaining oil distribution and increasing difficulty in potential tapping at middlelate stage of oilfield development,taking the lower sub-member of second member in Dongying Formation of S oilfield in the Bohai Bay Basin for example,the data of core,well logging,water out interpretation and production performance were used to carry out quantitative characterization on the single sand body within the deltaic mouth bar complex,and analyze its control effect on remaining oil distribution. The study results show that the planar contact patterns of single sand body in mouth bar of the study area are river dam contact,dam body contact,dam margin contact and interdam mud contact respectively. The sand bodies in river dam contact and dam body contact have good connectivity,and remaining oil is not enriched; while the sand bodies in dam margin contact and interdam mud contact have poor connectivity or are disconnected,and remaining oil is easy to form on their flanks. This study can effectively guide the overall system adjustment of oil field at late stage.
Aiming at the complex remaining oil distribution and increasing difficulty in potential tapping at middlelate stage of oilfield development,taking the lower sub-member of second member in Dongying Formation of S oilfield in the Bohai Bay Basin for example,the data of core,well logging,water out interpretation and production performance were used to carry out quantitative characterization on the single sand body within the deltaic mouth bar complex,and analyze its control effect on remaining oil distribution. The study results show that the planar contact patterns of single sand body in mouth bar of the study area are river dam contact,dam body contact,dam margin contact and interdam mud contact respectively. The sand bodies in river dam contact and dam body contact have good connectivity,and remaining oil is not enriched; while the sand bodies in dam margin contact and interdam mud contact have poor connectivity or are disconnected,and remaining oil is easy to form on their flanks. This study can effectively guide the overall system adjustment of oil field at late stage.
引文
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[17]贺永红,张锐,马芳侠,等.三角洲河口区沉积微相演化特征及成因分析---以鄂尔多斯盆地樊学地区长4+5油层组为例[J].中国石油勘探,2017,22(2):35-43.
[18]姜辉.裂陷晚期浅水三角洲沉积特征及其分布规律---以印度尼西亚Sunda盆地渐新统上段为例[J].中国石油勘探,2018,23(5):73-78.
[19]黄东,李育聪,刘敏,等.川中地区中侏罗统沙溪庙组一段油气藏特征及勘探潜力评价[J].中国石油勘探,2017,22(2):44-49.
[20]吴嘉鹏,张兰,万丽芬,等.西湖凹陷平湖组物源分析[J].中国石油勘探,2017,22(2):50-57.编辑朱雅楠
[2]周银邦,吴胜和,岳大力,等.复合分流河道砂体内部单河道划分---以萨北油田北二西区萨Ⅱ1+2小层为例[J].油气地质与采收率,2010,17(2):4-8.
[3]封从军,鲍志东,单启铜,等.三角洲平原复合分流河道内部单砂体划分---以扶余油田中区南部泉头组四段为例[J].石油与天然气地质,2012,33(1):77-83.
[4]周银邦,吴胜和,岳大力,等.分流河道砂体构型分析方法在萨北油田的应用[J].西安石油大学学报(自然科学版),2008,23(5):6-10.
[5]赵小庆,鲍志东,刘宗飞,等.河控三角洲水下分流河道砂体储集层构型精细分析---以扶余油田探51区块为例[J].石油勘探与开发,2013,40(2):181-187.
[6]温立峰,吴胜和,岳大力,等.分流河道类型划分与储层构型界面研究[J].大庆石油地质与开发,2009,28(1):26-29.
[7]阎海龙,孙卫.水下分流河道砂体中夹层的识别及定量分析---以靖安油田盘古梁长6油组为例[J].西北大学学报(自然科学版),2006,36(1):133-136.
[8]马世忠,王一博,崔义,等.油气区水下分流河道内部建筑结构模式的建立[J].大庆石油学院学报,2006,30(5):1-3.
[9]封从军,鲍志东,杨玲,等.三角洲前缘水下分流河道储集层构型及剩余油分布[J].石油勘探与开发,2014,41(3):323-329.
[10]石富伦.基于沉积模拟的辫状河三角洲河口坝原型模型建立[D].荆州:长江大学,2013.
[11]李凤杰,王多云,王峰,等.坳陷湖盆三角洲前缘储层砂体成因研究[J].石油实验地质,2007,29(1):63-68.
[12]王多云,李凤杰,高明书,等.陕甘宁盆地姬塬地区三叠系延长组三角洲前缘的微相组合及特征[J].沉积学报,2005,23(2):218-224.
[13]董艳蕾,朱筱敏,李德江,等.渤海湾盆地辽东湾地区东二层序高位三角洲沉积特征[J].油气地质与采收率,2008,15(2):56-60.
[14]吴胜和.储层表征与建模[M].北京:石油工业出版社,2010:144-145.
[15]LOWRY T,ALLEN M B,SHIVE P N.Singularity removal:A refinement of resistivity modeling techniques.[J].Geophysics,1989,54(6):766-774.
[16]辛治国.河控三角洲河口坝构型分析[J].地质评论,2008,54(4):528-531.
[17]贺永红,张锐,马芳侠,等.三角洲河口区沉积微相演化特征及成因分析---以鄂尔多斯盆地樊学地区长4+5油层组为例[J].中国石油勘探,2017,22(2):35-43.
[18]姜辉.裂陷晚期浅水三角洲沉积特征及其分布规律---以印度尼西亚Sunda盆地渐新统上段为例[J].中国石油勘探,2018,23(5):73-78.
[19]黄东,李育聪,刘敏,等.川中地区中侏罗统沙溪庙组一段油气藏特征及勘探潜力评价[J].中国石油勘探,2017,22(2):44-49.
[20]吴嘉鹏,张兰,万丽芬,等.西湖凹陷平湖组物源分析[J].中国石油勘探,2017,22(2):50-57.编辑朱雅楠
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