井震结合砂体构型表征及其对剩余油的控制研究:以冀东油田明化镇组NmⅢ12-1小层为例
|
摘要
冀东油田明化镇组NmⅢ12-1小层井网分布不均,但地震资料品质较好。为此,对该小层进行井震结合砂体构型表征,建立曲流河砂体构型边界的正演概念模型。利用地震沿层切片属性、反演等地震资料及测井砂体特征有效提高单一河道边界及点砂坝砂体识别精度。采用"模式拟合"对点砂坝及其内部构型进行表征,利用水平井及动态资料验证构型解剖的合理性。在此基础上,建立三维储层构型模型并进行数值模拟,预测剩余油,提出曲流河砂体控制剩余油分布。开发中后期的油藏,正向微构造、储层构型和井网是剩余油分布的主控因素。构型控制的剩余油多集中在点砂坝的中上部;废弃河道及点砂坝内侧积层对渗流产生一定的遮挡,在废弃河道附近及侧积层间的侧积体常富集剩余油。研究对油田开发方案的调整具有重要意义。
Well pattern distribution is not uniform in the NmⅢ12-1 area( Minghuazhen Formation) of the Jidong oilfield,but the quality of seismic data is good. Therefore,integration of well and seismic data method was adopted to study the sand body architecture,and conceptual models of architecture boundaries were established.The accuracy of single channel boundary and point bar sand body identification were effectively improved by combining seismic and well log data. The point bar and its internal configuration were characterized by the"mode-fitting"method,and the horizontal well and dynamic data were used to verify the results. Consequently,3 D reservoir models were established to predict the remaining oil distribution. In the middle and later stages of oilfield development,the remaining oil distribution is mainly affected by the micro-structures,reservoir architecture and well network. The positive micro-structures( e. g. micro-fault nose structure and micro-anticline),is the main site with relatively rich remaining oil. Point bar sand bodies generally have positive rhythm. Under the gravity influence,the lower part of the reservoir is substantially flooded,thus the remaining oil is concentrated mainly in the upper part. Since the abandoned channel and laterally-accreted shale beds often have certain shielding effect on the fluid flow,there are commonly plenty of remaining oil.
Well pattern distribution is not uniform in the NmⅢ12-1 area( Minghuazhen Formation) of the Jidong oilfield,but the quality of seismic data is good. Therefore,integration of well and seismic data method was adopted to study the sand body architecture,and conceptual models of architecture boundaries were established.The accuracy of single channel boundary and point bar sand body identification were effectively improved by combining seismic and well log data. The point bar and its internal configuration were characterized by the"mode-fitting"method,and the horizontal well and dynamic data were used to verify the results. Consequently,3 D reservoir models were established to predict the remaining oil distribution. In the middle and later stages of oilfield development,the remaining oil distribution is mainly affected by the micro-structures,reservoir architecture and well network. The positive micro-structures( e. g. micro-fault nose structure and micro-anticline),is the main site with relatively rich remaining oil. Point bar sand bodies generally have positive rhythm. Under the gravity influence,the lower part of the reservoir is substantially flooded,thus the remaining oil is concentrated mainly in the upper part. Since the abandoned channel and laterally-accreted shale beds often have certain shielding effect on the fluid flow,there are commonly plenty of remaining oil.
引文
[1]周银邦,吴胜和,计秉玉,等.曲流河储层构型表征研究进展[J].地球科学进展,2011,26(7):695-702.
[2]吴胜和,翟瑞,李宇鹏.地下储层构型表征:现状与展望[J].地学前缘,2012,19(2):15-23.
[3]陈欢庆,石成方,曹晨.精细油藏描述研究进展[J].地质论评,2015,61(5):1135-1146.
[4]曾祥平.储集层构型研究在油田精细开发中的应用[J].石油勘探与开发,2010,37(4):483-489.
[5] PRANTER M J,VARGAS M F,PARIS T L. Characterization and 3D reservoir modelling of fluvial sandstones of the Willians Fork Formation,Rulison field,Piceance basin,Colorado,USA[J]. Joural of Geophysics and Engineering,2008,5(2):158-172.
[6]王凤兰,白振强,朱伟.曲流河砂体内部构型及不同开发阶段剩余油分布研究[J].沉积学报,2011,29(3):512-519.
[7]岳大力,吴胜和,程会明,等.基于三维储层构型模型的油藏数值模拟及剩余油分布模式[J].中国石油大学学报(自然科学版),2008,32(2):21-27.
[8]赵伦,梁宏伟,张祥忠,等.砂体构型特征与剩余油分布模式[J].石油勘探与开发,2016,43(3):433-441.
[9]王越,陈世悦.曲流河砂体构型及非均质性特征[J].石油勘探与开发,2016,43(2):209-218.
[10]朱卫红,吴胜和,尹志军,等.辫状河三角洲露头构型——以塔里木盆地库车坳陷三叠系黄山街组为例[J].石油勘探与开发,2016,43(3):482-489.
[11]张涛,林承焰,张宪国,等.开发尺度的曲流河储层内部结构地震沉积学解释方法[J].地学前缘,2012,19(2):74-80.
[12]肖佃师,张飞飞,卢双舫,等.井震联合识别复合砂体中单一河道——以朝44区块扶余油层为例[J].石油地球物理勘探,2016,51(1):148-157.
[13]岳大力,吴胜和,刘建民,等.曲流河点砂坝地下储层构型精细解剖方法[J].石油学报,2007,28(4):99-103.
[14]岳大力,吴胜和,谭河清,等.曲流河古河道储层构型精细解剖——以孤东油田七区西馆陶组为例[J].地学前缘,2008,15(1):101-109.
[15]马世忠,孙雨,范广娟,等.地下曲流河道单砂体内部薄夹层建筑结构研究方法[J].沉积学报,2008,26(4):632-639.
[16]韩洁,王敬瑶,李军,等.扶余油田扶余组曲流河储层单砂体构型刻画及剩余油控制因素[J].现代地质,2011,25(2):308-314.
[17]何文祥,许雅,刘军锋,等.马岭油田北三区河流相储层构型综合地质研究[J].石油学报,2010,31(2):274-279.
[18]刘文岭,韩大匡,程蒲,等.高含水油田井震联合重构地下认识体系[J].石油地球物理勘探,2011,46(6):930-937.
[19]梁宏伟,穆龙新,范子菲,等.基于正演模拟的曲流河构型层次研究[J].中国矿业大学学报,2014(6):1063-1069.
[20]郭诚,张建民,朱建敏,等.海上河流相油田少井条件下储层精细解剖——以垦利3-2油田3-1483砂体为例[J].东北石油大学学报,2016,40(3):10-17.
[21]张飞飞,王珩,郭永贵,等.密井网地质统计学反演在河道砂体预测中的应用[J].断块油气田,2016,23(2):156-160.
[22] LEEDER M R. Fluviatile fining upwards cycles and the magnitude of paleochannels[J]. Geological Magazine,1973,110(3):265-276.
[23] SCHUMM S A. Fluvial paleochannels[J]. SEPM Special Publication 16,1972(1):98-107.
[24] LORENZ J C,HEINZE D M,CLARK J A,et al. Determination of width of meander-belt sandstone reservoirs from vertical downhole data,Mesaverde Group,Piceance Greek Basin,Colorado[J]. AAPG Bulletin,1985,69(2):710-721.
[25]周银邦,吴胜和,岳大力,等.点砂坝内部侧积层倾角控制因素分析及识别方法[J].中国石油大学学报(自然科学版),2009,33(2):7-11.
[26]薛培华.河流点砂坝相储层模式概论[M].北京:石油工业出版社,1991:20-70.
[27]周新茂,高兴军,田昌炳,等.曲流河点砂坝内部构型要素的定量描述及应用[J].天然气地球科学,2010(3):421-426.
[28]闫百泉,张鑫磊,于利民,等.基于岩心及密井网的点砂坝构型与剩余油分析[J].石油勘探与开发,2014,41(5):597-604.
[29]杨少春,赵晓东,钟思瑛,等.辫状河心滩内部非均质性及对剩余油分布的影响[J].中南大学学报(自然科学版),2015,46(3):1066-1074.
[30]胡荣强,马迪,马世忠,等.点砂坝建筑结构控渗流单元划分及剩余油分布研究[J].中国矿业大学学报,2016,45(1):133-140.
[31]闫百泉,马世忠,王龙,等.曲流点砂坝内部剩余油形成与分布规律物理模拟[J].地学前缘,2008,15(1):65-69.
[32]林承焰,孙廷彬,董春梅,等.基于单砂体的特高含水期剩余油精细表征[J].石油学报,2013,34(6):1131-1136.
[33]邹拓,刘应忠,聂国振.曲流河点坝内部构型精细研究及应用[J].现代地质,2014,28(3):611-616.
[2]吴胜和,翟瑞,李宇鹏.地下储层构型表征:现状与展望[J].地学前缘,2012,19(2):15-23.
[3]陈欢庆,石成方,曹晨.精细油藏描述研究进展[J].地质论评,2015,61(5):1135-1146.
[4]曾祥平.储集层构型研究在油田精细开发中的应用[J].石油勘探与开发,2010,37(4):483-489.
[5] PRANTER M J,VARGAS M F,PARIS T L. Characterization and 3D reservoir modelling of fluvial sandstones of the Willians Fork Formation,Rulison field,Piceance basin,Colorado,USA[J]. Joural of Geophysics and Engineering,2008,5(2):158-172.
[6]王凤兰,白振强,朱伟.曲流河砂体内部构型及不同开发阶段剩余油分布研究[J].沉积学报,2011,29(3):512-519.
[7]岳大力,吴胜和,程会明,等.基于三维储层构型模型的油藏数值模拟及剩余油分布模式[J].中国石油大学学报(自然科学版),2008,32(2):21-27.
[8]赵伦,梁宏伟,张祥忠,等.砂体构型特征与剩余油分布模式[J].石油勘探与开发,2016,43(3):433-441.
[9]王越,陈世悦.曲流河砂体构型及非均质性特征[J].石油勘探与开发,2016,43(2):209-218.
[10]朱卫红,吴胜和,尹志军,等.辫状河三角洲露头构型——以塔里木盆地库车坳陷三叠系黄山街组为例[J].石油勘探与开发,2016,43(3):482-489.
[11]张涛,林承焰,张宪国,等.开发尺度的曲流河储层内部结构地震沉积学解释方法[J].地学前缘,2012,19(2):74-80.
[12]肖佃师,张飞飞,卢双舫,等.井震联合识别复合砂体中单一河道——以朝44区块扶余油层为例[J].石油地球物理勘探,2016,51(1):148-157.
[13]岳大力,吴胜和,刘建民,等.曲流河点砂坝地下储层构型精细解剖方法[J].石油学报,2007,28(4):99-103.
[14]岳大力,吴胜和,谭河清,等.曲流河古河道储层构型精细解剖——以孤东油田七区西馆陶组为例[J].地学前缘,2008,15(1):101-109.
[15]马世忠,孙雨,范广娟,等.地下曲流河道单砂体内部薄夹层建筑结构研究方法[J].沉积学报,2008,26(4):632-639.
[16]韩洁,王敬瑶,李军,等.扶余油田扶余组曲流河储层单砂体构型刻画及剩余油控制因素[J].现代地质,2011,25(2):308-314.
[17]何文祥,许雅,刘军锋,等.马岭油田北三区河流相储层构型综合地质研究[J].石油学报,2010,31(2):274-279.
[18]刘文岭,韩大匡,程蒲,等.高含水油田井震联合重构地下认识体系[J].石油地球物理勘探,2011,46(6):930-937.
[19]梁宏伟,穆龙新,范子菲,等.基于正演模拟的曲流河构型层次研究[J].中国矿业大学学报,2014(6):1063-1069.
[20]郭诚,张建民,朱建敏,等.海上河流相油田少井条件下储层精细解剖——以垦利3-2油田3-1483砂体为例[J].东北石油大学学报,2016,40(3):10-17.
[21]张飞飞,王珩,郭永贵,等.密井网地质统计学反演在河道砂体预测中的应用[J].断块油气田,2016,23(2):156-160.
[22] LEEDER M R. Fluviatile fining upwards cycles and the magnitude of paleochannels[J]. Geological Magazine,1973,110(3):265-276.
[23] SCHUMM S A. Fluvial paleochannels[J]. SEPM Special Publication 16,1972(1):98-107.
[24] LORENZ J C,HEINZE D M,CLARK J A,et al. Determination of width of meander-belt sandstone reservoirs from vertical downhole data,Mesaverde Group,Piceance Greek Basin,Colorado[J]. AAPG Bulletin,1985,69(2):710-721.
[25]周银邦,吴胜和,岳大力,等.点砂坝内部侧积层倾角控制因素分析及识别方法[J].中国石油大学学报(自然科学版),2009,33(2):7-11.
[26]薛培华.河流点砂坝相储层模式概论[M].北京:石油工业出版社,1991:20-70.
[27]周新茂,高兴军,田昌炳,等.曲流河点砂坝内部构型要素的定量描述及应用[J].天然气地球科学,2010(3):421-426.
[28]闫百泉,张鑫磊,于利民,等.基于岩心及密井网的点砂坝构型与剩余油分析[J].石油勘探与开发,2014,41(5):597-604.
[29]杨少春,赵晓东,钟思瑛,等.辫状河心滩内部非均质性及对剩余油分布的影响[J].中南大学学报(自然科学版),2015,46(3):1066-1074.
[30]胡荣强,马迪,马世忠,等.点砂坝建筑结构控渗流单元划分及剩余油分布研究[J].中国矿业大学学报,2016,45(1):133-140.
[31]闫百泉,马世忠,王龙,等.曲流点砂坝内部剩余油形成与分布规律物理模拟[J].地学前缘,2008,15(1):65-69.
[32]林承焰,孙廷彬,董春梅,等.基于单砂体的特高含水期剩余油精细表征[J].石油学报,2013,34(6):1131-1136.
[33]邹拓,刘应忠,聂国振.曲流河点坝内部构型精细研究及应用[J].现代地质,2014,28(3):611-616.