塔里木盆地柯克亚凝析气田异常高压成因分析  

Genesis Analysis on Abnormal High Pressure in Kekeya Condensate Gas-Field, Tarim Basin

作　　者：王海芳[1] 杨辉廷[1] 陈培元[1] 杨新涛[2] 刘新辉[3] 

机构地区：[1]西南石油大学资源与环境学院,四川成都610500 [2]中国石油天然气股份有限公司新疆油田分公司,新疆克拉玛依834000 [3]塔里木油田勘探开发研究院,新疆库尔勒841000

出　　处：《新疆地质》2014年第2期231-234,共4页Xinjiang Geology

基　　金：中国家重点基础研究发展计划(973计划)(2012CB214803);"十二五"国家科技重大专项高含硫气藏安全高效开发技术(2011ZX05017-001);"十二五"国家科技重大专项大型油气田及煤层气开发(2011ZX05049);四川省重点建设学科(SZD0414)共同资助

摘　　要：异常地层压力既是油气运聚的重要动力来源,又是控制油气分布的重要因素。塔里木盆地柯克亚凝析气田新近系西河甫组西八段至古近系卡拉塔尔组油气藏表现出异常高压特征,超高的异常压力为该带油气勘探造成很大制约。从柯克亚凝析气田异常压力特征着手,对异常高压成因进行研究,认为源岩成烃及欠压实作用不是造成该地区超压的主要原因。该地区的超压主要是由侧向构造挤压、构造形变和推覆体加载等构造因素综合作用形成。其中,构造挤压是最主要因素。Abnormalpressureisnotonlythemajordynamicsourceofhydrocarbonmigrationandaccumulation,butalso the important factors for controlling the hydrocarbon distribution.Kekeya condensate gas field,from whose Xi-8 member of the Neogene Xihefu Formation to the Paleogene Kalatar Formation appears abnormal high pressure. Ultra high abnormal pressure plays an important role in controlling the oil ＆ gas exploration in this zone. Detailed study on the genesis of abnormal pressure has been conducted based on its characteristics. Comprehensive analysis show that：hydrocarbon generation of source rocks and the under-compaction are not the main causes of the overpressure in the region.The overpressure in this area is mainly formed by combination factors of lateral tectonic compression and structure deformation,loading nappe,of which tectonic compression is the principal factor.

关 键 词：柯克亚凝析气田 异常高压 构造运动 源岩成烃 欠压实 

分 类 号：P618.13[天文地球—矿床学]