完善末期井排水工艺 挖掘高渗井孔隙储气  

THE DRAINAGE GAS RECOVERY TECHNOLOGY OF GAS WELL IN PRODUCTION TAIL

作　　者：魏家勇[1] 杨辉[1] 

机构地区：[1]西南油气田分公司蜀南气矿

出　　处：《钻采工艺》2004年第6期34-36,共3页Drilling & Production Technology

摘　　要：在生产后期,气井举升能力下降,开采难度大,一般气水井只能采出裂缝储气的40%～70%。镇1井采用泡沫排水采气工艺,裂缝储气基本采完后,又采取了一系列技术措施,使气井5次起死回生,有效挖掘了孔隙储气。对同类气水井(裂缝系统)提高采收率具有指导作用。The lithological change of carbonate rock in Sichuan Basin is large, and form many single fracture systems. The control area of single fracture system is small. Reserves are less than 1.0×10 8 m 3～20.0×10 8 m 3. For effect of formation water in production tail, some uncompartmentalized gas fields have been changed as many single fracture systems. The fracture and pore in carbonate reservoir has high permeability, and they are store space and filtration channel. When production gas, the flow procedure of gas is: pore→fracture→bottom hole.In production tail, the lifting capability of gas well descended, and production become more difficult. Only 40%～70% of gas in fracture can be recovered in gas-water wells. Foam lifting is used in well Zhen 1. When gas in fracture was nearly all recovered, a series of technological methods are used in this well,so that the well is reproduced for 5 times. The gas in pore is recovered effectively.

关 键 词：高渗透性气井 储量论证 高渗井 挖潜技术 

分 类 号：TE377[石油与天然气工程—油气田开发工程]