川中八角场气田须四段气藏排水采气实践与认识  

DRAINAGE GAS RECOVERY FOR T_3x^4 GAS RESERVOIR, BAJIAOCHANG GASFIELD, CENTRAL SICHUAN BASIN

作　　者：王浩[1,2] 施雷庭[1] 王会强[2] 杨东凡[2] 郝煦[2] 易建国[2] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.西南石油大学 [2]中国石油西南油气田公司

出　　处：《天然气勘探与开发》2016年第3期62-65,69,共5页Natural Gas Exploration and Development

摘　　要：四川盆地川中八角场气田上三叠统须四段气藏属典型的致密砂岩气藏,储层具有低孔、低渗、高含水饱和度的特征,气井产能总体较低且普遍产水.。开发过程中,随着地层压力下降,气井带液能力减弱,部分井只能通过间开维持生产,给气藏生产组织带来了困难。气田通过实施泡排、柱塞气举等排水采气工艺试验,优选出柱塞气举作为区块主要的排水采气工艺措施。目前柱塞气举工艺在气田内已处于广泛应用阶段,通过这些措施,实现了产水气井稳定带液,维护了气井产能,延缓了产量递减,取得较好的应用效果。As a typical tight sandstone gas reservoir, the Upper Triassic Xujiahe 4 Member(T_3x^4) in Bajiaochang gasfield, Sichuan Basin, is featured by low porosity and permeability, and high water saturation. And accompanied with low productivity, most gas wells produce water generally. During their development, the formation-pressure decline weakened the liquid-carrying capacity. In some wells, production has to be maintained by using intermittent pattern. Through the field tests of both foam and plunger gas-lift drainage gas recovery technologies, we optimized the latter as the main one. At present, the plunger gas-lift technology has been widely applied to realizing the stable liquid carrying of water-producing wells, to maintaining the productivity, and to delaying the production decline.

关 键 词：四川盆地 八角场气田 须四段气藏 致密砂岩气藏 排水采气工艺 柱塞气举 应用效果 

分 类 号：TE37[石油与天然气工程—油气田开发工程]