元坝气田飞仙关组气藏特征及控制因素  

Reservoir Characteristics of Feixianguan Formation in Yuanba Gasfield and Controlling Factors

作　　者：陈丹[1] 厚东琳[1] 

机构地区：[1]中国石化勘探分公司勘探研究院,四川成都610000

出　　处：《天然气技术与经济》2015年第1期4-7,77,共4页Natural Gas Technology and Economy

摘　　要：四川盆地元坝气田飞仙关组气藏天然气为高热演化程度的干气,水型为氯化钙型。总体为高压低地温梯度储层。元坝地区飞二段储层以裂缝—孔隙型为主,储集空间以溶孔为主,孔隙类型以鲕粒粒内溶孔和粒间溶孔为主,具有低孔低渗、中孔低渗的特征。元坝气田飞二段浅滩气层主要发育在构造较高部位,在构造边部和构造较低部位发育水层。构造高低、岩性及物性和溶蚀作用是影响飞二段浅滩气藏气水分布的主要控制因素。Gas produced from Feixianguan Formation, Yuanba gasfield, Sichuan Basin, belongs to dry one at a highly thermal evolution stage. Its water type is of Ca Cl2. In general, this formation is a reservoir with high pressure and low geothermal gradient. For the Feixianguan 2 Member, mainly a fractured- porous reservoir, its space is dominated by dissolution pore; the pore type includes intragranular and intergranular dissolution pore; it is characterized by low porosity and low permeability, and medium porosity and low permeability. The shallow shoal gas layer of Feixianguan 2 Member is located at a higher structural portion, in which some water layers may be found at lower and marginal structural portions. The main factors to control gas and water distribution are structure, lithology,physical property, and dissolution.

关 键 词：元坝气田 气藏特征 气水分布 控制因素 

分 类 号：P618.13[天文地球—矿床学]