济阳坳陷异常压力成因研究  

Abnormal pressure genetic study for Jiyang sag.

作　　者：王志战[1] 许小琼[1] 甄建 

机构地区：[1]胜利石油管理局地质录井公司 [2]渤海钻探工程公司第一录井公司

出　　处：《录井工程》2009年第2期29-33,共5页Mud Logging Engineering

基　　金：国家重点基础研究发展计划(973计划)(2003CB214601)

摘　　要：通过地震、测井、录井和测试等资料对济阳坳陷异常压力的成因机制进行了系统研究。相比于前人的研究,增加了盐岩上拱、盐类渗透两类新的超压成因机制,否定了水热增温和构造抬升的成因机制;对沾化凹陷下古生界以下老地层和惠民凹陷第三系地层中的异常低压成因机制也进行了重新认识。研究表明,济阳坳陷异常高压的主要成因机制有欠平衡压实、烃类生成、盐岩上拱、盐类渗透、黏土矿物脱水,异常低压的主要成因机制有抬升剥蚀和过压实作用。The abnormal pressure genetic mechanism of Jiyang sag was studied with the information got from seismic,wire line logging,mud logging and well test.Compared with forefathers studies,two new genetic mechanisms on overpressure are added,which are salt rock rise and salt infiltration, and the result of the research denied the genetic mechanisms of aqua thermal temperature rises and tectonic uplift. The new recognition was formed about abnormal low pressure genetic mechanism for old formation below Lower Palaeozoic in Zhanhua sag and the formation of Tertiary system in Huimin sag.The research showed that the main genetic mechanisms for abnormal high pressure in Jiyang sag are under-balance compaction,hydrocarbon forming, salt rock rise,salt infiltration and clay mineral dehydration, while the main abnormal low pressure genetic mechanisms are lift degradation and over compaction.

关 键 词：济阳坳陷 异常高压 异常低压 成因机制 

分 类 号：P642.22[天文地球—工程地质学] P618.130.2[天文地球—地质矿产勘探]