酒泉盆地窟窿山油藏裂缝分布特征
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摘要
处于酒泉盆地青西凹陷南缘冲断带内的窟窿山背斜构造,轴向为北西西向,与区域构造走向相一致。在该构造内,已证实作为油藏主体的高丰度富集区块呈北北东向展布,下白垩统深层裂缝性储层的发育情况很大程度上控制了油藏分布范围。根据岩心观察描述、岩石薄片、扫描电镜、全直径岩心X-CT扫描和成像测井等各项资料,研究了下白垩统下沟组储层内裂缝的成因类型、产状,包括裂缝延伸方向、组系等特征,并在此基础上,将实验分析数据、成像测井解释结果及地震属性分析相结合,建立了该油藏下白垩统下沟组储层内的裂缝分布模型。
The axial direction of Kulongshan anticline in the south thrust belt of Qingxi Sag in Jiuquan Basin is accordance with the regional structural trend of NWW.However,the proved high oil abundance block of the structure spreads in the direction of NNE.The reservoir distribution is greatly dominated by the development situation of the deep fractured reservoir of Lower Cretaceous.Based on the core observation and description,the data of rock thin section,scanning electron microscope,X-CT scanning of whole-core and image logging,the fracture genesis,types and occurrence,including the spreading direction and the group systems of the reservoir of Lower Cretaceous Xiagou Formation are studied.Furthermore,the fractures distribution model is set up by the combination of test analysis data with image logging interpretation result and the seismic attribute analysis.
The axial direction of Kulongshan anticline in the south thrust belt of Qingxi Sag in Jiuquan Basin is accordance with the regional structural trend of NWW.However,the proved high oil abundance block of the structure spreads in the direction of NNE.The reservoir distribution is greatly dominated by the development situation of the deep fractured reservoir of Lower Cretaceous.Based on the core observation and description,the data of rock thin section,scanning electron microscope,X-CT scanning of whole-core and image logging,the fracture genesis,types and occurrence,including the spreading direction and the group systems of the reservoir of Lower Cretaceous Xiagou Formation are studied.Furthermore,the fractures distribution model is set up by the combination of test analysis data with image logging interpretation result and the seismic attribute analysis.
引文
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[3]霍永录,谭试典.酒泉盆地陆相石油地质特征及勘探实践[M].北京:石油工业出版社,1995:21-37.
[4]周晓峰,赵应成,王崇孝,等.青西油田裂缝性油藏研究[J].新疆地质,2006,24(1):40-44.
[5]杜文博,程少林,陈建军,等.青西油田下白垩统下沟组储集层特征[J].新疆石油地质,2003,24(1):38-40.
[6]申本科,胡永乐,田昌炳,等.陆相砂砾岩油藏裂缝发育特征分析——以克拉玛依油田八区乌尔禾组油藏为例[J].石油勘探与开发,2005,32(3):41-44.
[7]童亨茂,曹戴勇.柴达木盆地西部裂缝的成因机制和分布模式[J].石油与天然气地质,2004,25(6):639-643.
[8]王景,凌升阶,南中虎.特低渗透砂岩微裂缝分布研究方法探索[J].石油勘探与开发,2003,30(2):51-53.
[9]谭廷栋.裂缝性油气藏测井解释模型与评价方法[M].北京:石油工业出版社,1987:19-35.
[10]裘亦楠,薛叔浩.油气储层评价技术[M].北京:石油工业出版社,1994:216-219.
[11]王允诚.裂缝性致密油气储集层[M].北京:地质出社,1992:32-67.
[12]肖文华,魏军.祁连山北缘逆掩推覆带构造及成藏特征[J].新疆石油地质,2003,24(6):533-535.
[13]戴弹申,欧振洲.裂缝圈闭及其勘探方法[J].天然气工业,1990,10(4):1-6.
[14]陈少军,罗群,王铁成,等.柴达木盆地断裂特征及其对油气分布的控制作用[J].新疆石油地质,2004,25(1):22-25.
[15]曹宏,宋新民,张爱卿.冲积扇砾岩油藏裂缝预测新技术[J].石油学报,2000,21(6):117-121.
[16]邱立伟,杨安平,康志江.新疆塔河裂缝溶洞型油藏储层建模研究[J].特种油气藏,2003,10(6):36-38.
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