迪北地区致密气藏地质条件及资源潜力  

GEOLOGICAL CONDITIONS AND RESOURCE POTENTIAL OF THE TIGHT GAS RESERVOIRS IN DIBEI AREA

作　　者：卢玉红[1] 钱玲[1] 鲁雪松 余和中 张科[1] 赵青[1] 

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]中国石油北京勘探开发研究院,北京100083 [3]中国石油杭州地质研究院,浙江杭州310023

出　　处：《大庆石油地质与开发》2015年第4期8-14,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究发展计划项目"中国西部叠合盆地油气富集规律与勘探潜力预测"(2011CB201106)

摘　　要：库车坳陷东部的迪北气藏是塔里木盆地已证实的致密砂岩气藏,在其形成地质条件分析基础上,依据露头、钻井、地震等资料深入研究构造特征和源储匹配关系,并利用多种方法对库车东部致密砂岩气资源量进行了计算。研究认为:迪北气藏侏罗系煤系烃源岩发育,成熟度高,处于大量生气阶段,为致密砂岩气的形成提供了充足气源;侏罗系阿合组为典型的致密储层,且与煤系烃源岩叠置,是形成致密气藏的必要条件。Dibei Gas Reservoirs in East Kuche Depression of Tarim Basin have proven to be tight sandstone gas ones. On the bases of the analyses of the geological conditions and according to the deep studies on the structural features and source-reservoir matching relationships with the help of the outcrop, drilling, seismic data and so on, the tight sandstone gas resource amount in East Kuche is calculated by means of various methods. The researches show that the Jurassic coal-measure hydrocarbon source rocks in Dibei Gas Reservoirs are well-developed, their maturities are pretty higher and a large amount of gas is generated in the stage, thus the sufficient gas source is provided for the accumulation and enrichment of the tight sandstone gas reservoirs; Jurassic Abe Formation is the typical tight reservoirs, and moreover stacked with the coal-measure source rocks, all the advantages stated above provide the necessary conditions for the accumulation of the tight gas reservoirs.

关 键 词：迪北气藏 致密气 地质条件 资源潜力 侏罗系 库车坳陷东部 

分 类 号：TE121.3[石油与天然气工程—油气勘探]