新场上沙气藏难采储量层水平井技术开发与实践

针对直井生产过程中暴露出单井控制动态储量低、气井产量低、压力下降快、稳产能力差等一系列问题,为改善气田开发效果,提高储量动用程度和采收率,在新场沙溪庙组气藏难采储量层开展了水平井开发技术的研究和应用,取得了较好的效果.经过几年的研究和实践,逐步形成了水平井区筛选、水平井与直井组合并网、水平井优化设计及水平井分段压裂等一系列特色配套技术,目前水平井在难采储量层已达到规模实施阶段,日产气为邻近直井的3～8倍,生产效果较好.该研究为实现水平井技术在川西低渗气藏难采储量层的全面推广应用提供了技术保障.

The application and the practice of horizontal well technology in JS reservoir difficult to exploit in xingchang gas field

＂In order to improve gas field development effect and recovery,according to the problems of low single well controlled reserves,low yield of gas well,quick droop pressure and poor maintenance capability that exposed during the production of vertical well in JS reserve in Xingchang gas field.The study and application of horizontal well technology was carried in JS reserve,and achieved good results.Through the research and practice of a few years,and gradually formed a horizontal well region selection,horizontal and vertical wells combined well network,optimization design of horizontal well and horizontal well fracturing and a series of feature matching technology,at present the horizontal well in reserve difficult to exploit has already reached the scale implementation phase.The daily gas product ion is 3-8 times than near vertical wells, the production effect is good.This study provides techni- cal guarantee for the comprehensive promotion application of horizontal wells in low-perme- ability gas reservoir difficult to exploit in western Sichuan basin.