伏龙泉登娄库组低渗透砂岩气藏水锁伤害研究  

Research of water blocking damage of low permeability gas reservoir of Denglouku formation in Fulongquan gasfield

作　　者：王志超[1] 何睿[2] 范传雷 谢信捷 李小刚[2] 胡仲可 

机构地区：[1]中国石油吉林油田分公司,吉林松原138000 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [3]中石油西南油气田分公司华油公司,四川成都610000

出　　处：《石油化工应用》2016年第6期23-28,39,共7页Petrochemical Industry Application

基　　金：国家油气科技重大专项资助项目;项目编号:2011ZX05054

摘　　要：水锁伤害广泛存在于低渗透砂岩气藏中,严重影响气藏的开发效果。基于伏龙泉登娄库组储层地质特征以及开发过程中所遇到的问题,结合国内外相关文献,分别采用了水锁指数法、BP神经网络预测法以及室内实验对伏龙泉登娄库组储层水锁伤害程度进行预测评价。结果表明,伏龙泉登娄库组砂岩气藏水锁伤害较为严重。然后针对登娄库组储层水锁伤害特点,基于相关实验数据及现场资料,分析了目标层水锁伤害机理,并针对性地分析了影响水锁伤害的因素,在此基础上提出利用复合解堵方法来有效解除水锁伤害,以恢复或提高气井产量。Water blocking is one of the major types of damage to low permeability sandstone gas reservoir, which adversely affects the developing effect. Based on geologic characteristics of reservoir and the problems we encountered in earlier stage of development in Denglouku formation of Fulongquan gasfield, and after combining with relevant literatures, the level of damage to Denglouku formation induced by water blocking is predicted and evaluated with water blocking index electric-petrophysical experiments, BP neural network method and laboratory experiments. Comprehensive analysis indicates that the water blocking damage to Denglouku reservoir is relatively serious. Then, directing at the characteristics of water blocking damage and based on in-situ data and experimental results, damage mechanism and influencing factors of water blocking have been analyzed. On the basis, the compositeblockage removal method has been put forward to remove water locking damage, thereby regaining and improving the gas well output.

关 键 词：低渗透 砂岩气藏 水锁伤害 BP神经网络 液相滞留 

分 类 号：TE258.3[石油与天然气工程—油气井工程]