库车坳陷克拉苏构造带超高压大气田储层流体包裹体特征及成藏信息  

Fluid inclusion characteristics of reservoirs in Kelasu tectonic zone of Kuqa Depression and its accumulation information

作　　者：冯松宝[1] 徐文明[2] 顿亚鹏[3] 

机构地区：[1]宿州学院地球科学与工程学院,安徽宿州234000 [2]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 [3]安徽煤田地质局第三勘探队,安徽宿州234000

出　　处：《石油实验地质》2014年第2期211-217,共7页Petroleum Geology & Experiment

基　　金：国家油气科技重大专项(2011ZX05007-02);博士科研启动基金(2013jb03);宿州学院创新团队建设资助计划(2013kytd01);安徽省煤矿勘探工程技术研究中心平台项目(2013YKF02)联合资助

摘　　要：对库车坳陷克拉苏构造带储层流体包裹体研究认为，储层包裹体以盐水包裹体为主，发育少量气态烃包裹体和气液两相包裹体，主要分布在石英中，以线状和面状分布，包裹体一般较小，主要分布在4～10μm之间；盐水包裹体的均一温度为86．2～196．1℃，分布范围连续，不同区带的均一温度有差别，盐水包裹体的整体盐度较低，分布在2％～4％之间的频数最大；含烃包裹体丰度低，主要分布在0．1％～8．1％之间。分析认为，克拉苏构造带天然气充注是一个连续快速的过程，而且晚期天然气充注强度大。结合研究区的埋藏史，可知克拉苏构造带天然气成藏发生在库车期以来，克深区带的成藏时间晚于克拉区带，从东往西具有逐渐变晚的趋势。The analyses of fluid inclusion characteristics of reservoirs in the Kelasu tectonic zone of the Kuqa Depression show that saline inclusions are abundant while a few of gaseous hydrocarbon inclusions and gaseous-liquid inclusions also exist. The inclusions mainly locate in quartz as lines or in planar distribution. They are small, usually about 4-10μm. The homogenization temperature of saline inclusions is 86.2-196.1℃, usually in continuous distribution and varies between different regions. The salinity of saline inclusions is low, generally 2%-4%. The hydrocarbon inclusions have low abundance, usually 0.1%-8.1%. It has been concluded that natural gas charged rapidly and continuously in the Kelasu tectonic zone, and the late charging had stronger strength. Burial history studies show that natural gas accumulations have occurred ever since the Kuqa period, and are later in the Keshen zone than in the Kela zone. From east to west, accumulation period becomes later and later.

关 键 词：流体包裹体 均一温度 盐度 含烃包裹体丰度 成藏期 克拉苏构造带 库车坳陷 塔里木盆地 

分 类 号：TE122.3[石油与天然气工程—油气勘探]