曲流河砂体刻画及内部构型技术研究与应用
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摘要
应用沉积、测井和地震资料,分析曲流河废弃河道及点坝的测井和地震响应特征,探索性地开展了曲流河单砂体刻画;应用密闭取芯资料进行岩电交互分析,建立起侧积泥岩识别模式,并依据对子井公式计算出侧积泥岩产状。研究表明,侧积泥岩的倾角θ约为3.47°,倾向指向废弃河道的外法线方向,泥岩夹层纵向下延伸到砂体底部的2/3处。通过对点坝砂体进行含油饱和度测试,发现侧积泥岩上部为剩余油富集区。根据以上成果制订合理的挖潜技术对策,取得良好效果。
By application of sedimentary,well logging and seismic data,we analyze the logging and seismic response characteristics of abandoned channel and point bar in meandering river,and study on the property single sand body description in meandering river;We study the analysis rock electrical interaction with sealed coring data,build up laterally accreted mudstone recognition model,and on the basis of pairs well formula we calculate lateral accretion mudstone occurrence.Research shows that the slope angle of lateral mudstone is about3.47 °,the tendency is point to the outer normal of abandoned channel,mudstone interlayer longitudinal extension to 2 /3 at the bottom of sand body.By means of oil saturation test of the point bar sand body,we have found the top of lateral mudstone is still in enrichment of remaining oil.According to the above results we formulate reasonable measures of potential tapping technology and have achieved good results.
By application of sedimentary,well logging and seismic data,we analyze the logging and seismic response characteristics of abandoned channel and point bar in meandering river,and study on the property single sand body description in meandering river;We study the analysis rock electrical interaction with sealed coring data,build up laterally accreted mudstone recognition model,and on the basis of pairs well formula we calculate lateral accretion mudstone occurrence.Research shows that the slope angle of lateral mudstone is about3.47 °,the tendency is point to the outer normal of abandoned channel,mudstone interlayer longitudinal extension to 2 /3 at the bottom of sand body.By means of oil saturation test of the point bar sand body,we have found the top of lateral mudstone is still in enrichment of remaining oil.According to the above results we formulate reasonable measures of potential tapping technology and have achieved good results.
引文
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[8]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.
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[10]史忠生,王天琦,王建功.地震沉积学在不同地质条件下砂体识别中的应用——以松辽盆地西斜坡和长垣地区为例[J].岩性油气藏,2012,24(3):5-10.
[2]薛培华.河流点坝相储层模式概论[M].北京:石油工业出版社,1991.
[3]周新茂,胡永乐,高兴军,等.曲流河单砂体精细刻画在老油田二次开发中的应用[J].新疆石油地质,2010,31(3):284-287.
[4]孟立新,秦永厚,陈淑琴,等.点坝砂体内部剩余油分布及挖潜方法研究[J].特种油气藏,2013,20(4):92-95.
[5]王力群,李超,李其正,等.辽东湾盆地旅大10-1油田储层沉积学研究[J].岩性油气藏,2013,25(5):24-30.
[6]刘波,赵翰卿,王良书,等.古河流废弃河道微相的精细描述[J].沉积学报,2001,19(3):394-398.
[7]王元英.曲流河废弃河道的识别方法及其应用[J].大庆石油学院学报,2007,31(5):65-67.
[8]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.
[9]岳大力,吴胜和,谭河清,等.曲流河古河道储层构型精细解剖[J].地学前缘,2008,15(1):101-109.
[10]史忠生,王天琦,王建功.地震沉积学在不同地质条件下砂体识别中的应用——以松辽盆地西斜坡和长垣地区为例[J].岩性油气藏,2012,24(3):5-10.
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