石油实验地质2017，Vol.39Issue(5)：610-617,8.DOI:10.11781/sysydz201705610
四川盆地寒武系洗象池组储层基本特征及主控因素研究
Reservoir characteristics and main controlling factors of the Cambrian Xixiangchi Formation in the Sichuan Basin
摘要
Abstract
The middle and lower Cambrian Xixiangchi Formation in the Sichuan Basin is a gas?bearing formation with a good potential. Its exploration degree is still very low at present, and the reservoir characteristics and main controls are not clear. Core, thin section and testing data were integrated to study the rock types, reservoir space, physical properties and controlling factors of the Xixiangchi reservoirs. The Xixiangchi reservoirs are mainly grain dolomites, followed by aplite?dolomites. The reservoir space includes pores, caves and fractures, and the reservoir type is fracture?pore type. The physical properties of the reservoirs are characterized by low porosity and low permeability, and locally high porosity and high permeability, showing a strong heterogeneity. For the distribution, the Xixiangchi reservoirs vertically stacked and have a poor lateral continuity. Thick reservoirs appear from the central Sichuan Basin to well GT 2 in the east, and then thinned in Wubaiti area. In Fengjie and Xishui areas at the basin edge, reservoirs distribute as belts, and are thinner compared to those in the basin center. Reservoir development was controlled by sedimentary facies obviously. In the grain shoal area, reservoirs have a high development degree. Besides, constructive diagenesis and tectonic fracture have positive effects on reservoir development.关键词
储层特征/颗粒白云岩/储层主控因素/洗象池组/四川盆地Key words
reservoir characteristics/grain dolomite/reservoir main controls/Xixiangchi Formation/Sichuan Basin分类
能源科技引用本文复制引用
林怡,陈聪,山述娇,曾乙洋,刘鑫,陈友莲..四川盆地寒武系洗象池组储层基本特征及主控因素研究[J].石油实验地质,2017,39(5):610-617,8.基金项目
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05004-005)资助. （2011ZX05004-005）
