低压耐盐型泡排剂在大牛地气田的应用及评价  

Application and evaluation of a new low pressure and salt-tolerant foam unloading agent in Daniudi gasfield

作　　者：杨易骏[1] 刘慧[1] 王锦昌[1] 周瑞立[1] 李国峰[1] 陈旭[1] 林新宇[1] 何荣华 吴伟然[2] 徐卫峰[2] 王厦 张家伟 罗旭术 YANG Yijun;LIU Hui;WANG Jinchang;ZHOU Ruili;LI Guofeng;CHEN Xu;LIN Xinyu;HE Ronghua;WU Weiran;XU Weifeng;WANG Sha;ZHANG Jiawei;LUO Xushu(Engineering Technology Research Institute of SINOPEC North China Company,Zhengzhou Henan 450006,China;Gas Production Plant 1 of SINOPEC NorthChina Company,Yulin Shaanxi 719000,China)

机构地区：[1]中国石化华北油气分公司石油工程技术研究院,河南郑州450006 [2]中国石化华北油气分公司采气一厂,陕西榆林719000

出　　处：《石油化工应用》2020年第5期13-20,共8页Petrochemical Industry Application

基　　金：国家科技重大专项“低丰度致密低渗油气藏开发关键技术”,项目编号:2016ZX05048。

摘　　要：针对现用泡排剂在大牛地气田低压及产出液矿化度偏高气井中应用效果较差的问题,优选两性及非离子表面活性剂自主研发了一种低压耐盐型泡排剂CP-01,评价了其基本性能、并选取5口井进行了现场试验及经济效果分析。室内测试结果表明,该泡排剂与试验井地层水及其他现用药剂配伍性良好,且起泡、稳泡、二次起泡及携液性能均比现用泡排剂优异。现场试验及经济效果分析显示,5口井(矿化度为68100 mg/L^149000 mg/L)试验后,平均单井油套压差减小0.26 MPa,单井产气量增加232 m^3/d、产液量增加0.35 m^3/d,累计增产气量1.7415×10^4m^3、累计增产液量26.1 m^3,总体投入产出比为1:1.7,取得了一定的排水采气效果及经济效益。因此,该低压耐盐型泡排剂CP-01在大牛地气田后期开发生产中具有一定的推广应用价值。Aiming at the poor application effect of foaming agent in gas wells with low pressure and high content of salinity,low pressure and salt-tolerant foam unloading agent CP-01 has been developed using ampholytic and nonionic surfactant.Then its basic performance was evaluated and five wells which the content of salinity were 68100 mg/L^149000 mg/L were selected and the field test was carried out.Laboratory tests showed that this agent not only had good compatibility with formation water and other agents,but also its foaming ability,foam stabilizing ability,secondary foaming ability and liquid carrying ability were better than the current foaming agent.The application shows that the average pressure difference for oil and casing reduced 0.26 MPa,gas production increased 232 m^3/d、liquid production increased 0.35 m^3/d and the gas cumulative production increased 1.7415×10^4m^3、liquid cumulative production increased 26.1 m^3,draining gas recovery effect was obviously.At last,economic evaluation shows that the input-output ratio of this experiment which obtains a certain of economic benefits is 1:1.7.So,this new low pressure and salt-tolerant foam unloading agent CP-01 has a definite application during the development and production of Daniudi gasfield.

关 键 词：低压耐盐型泡排剂 性能评价 应用及评价 大牛地气田 

分 类 号：TE377[石油与天然气工程—油气田开发工程]