碳酸盐岩断层封闭机理及其封闭性识别方法
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摘要
国内外有关碳酸盐岩断层封闭性的研究甚少,直接影响了碳酸盐岩油气藏的勘探与开发。本文总结和提出了6种适用于碳酸盐岩断层封闭性的识别方法:膏盐岩涂抹断层泥比率法、断裂带填充物中泥质或膏盐岩含量法、断面压应力法、断层两侧地层压差法、地层水性质识别法以及生产动态分析法,其中一些判识标志不仅适用于碳酸盐岩地区,也适用于其它碎屑岩沉积区。
The fault sealing evaluation is an important aspect on exploration and development of carbonate, while few related studies have been performed at home and abroad. Based on mudstone profile and carbonate profile analysis, and carbonate fault sealing mechanism studies, six kinds of evaluation methods of carbonate fault sealing were put forward as follows: the gypsum gouge ration, the shale or gypsum content of fault filling materials, the compressive strain of fault plane, the formation pressure differential on both sides of the fault, the formation water property and field production performance. Some of which are not only applicable to the carbonatite area, but also suitable for other clastic sedimentary areas.
The fault sealing evaluation is an important aspect on exploration and development of carbonate, while few related studies have been performed at home and abroad. Based on mudstone profile and carbonate profile analysis, and carbonate fault sealing mechanism studies, six kinds of evaluation methods of carbonate fault sealing were put forward as follows: the gypsum gouge ration, the shale or gypsum content of fault filling materials, the compressive strain of fault plane, the formation pressure differential on both sides of the fault, the formation water property and field production performance. Some of which are not only applicable to the carbonatite area, but also suitable for other clastic sedimentary areas.
引文
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[2]夏青松,田景春,倪新锋.湖相碳酸盐岩研究现状及意义[J].沉积与特提斯地质,2003,23(1):105-112.
[3]许效松,杜佰伟.碳酸盐岩地区古风化壳岩溶储层[J].沉积与特提斯地质,2005,25(3):1-70.
[4]刘伟,窦齐丰,王韶华.断层封闭性综合分析方法—以永安油田沙二下油藏为例[J].新疆石油地质,2003,24(4):289-291.
[5]Knott S D.Fault Seal Analysis in the North Sea[J].AAPG,1994,7(3):778-792.
[6]沈传波,梅廉夫,汤济广,等.含油气盆地断层封闭性研究探讨[J].断块油气田,2002,9(4):1-5.
[7]付广,薛永超,杨勉.利用地震资料判断断层封闭性的方法探讨[J].石油物探,2000,39(1):70-76.
[8]周新桂,孙宝珊,谭成轩,等.现今地应力与断层封闭效应[J].石油勘探与开发,2000,27(5):127-131.
[9]王子煜.库车坳陷西部中新生代地层岩石物理和力学性质[J].地球物理学进展,2002,17(3):399-405.
[10]查明,曲江秀,张卫海.异常高压与油气成藏机理[J].石油勘探与开发,2002,29(19):19-22.