川东北地区高压气井测试技术研究及现场应用

Research on Well Testing Technology to High Pressure Gas Well in Northeast Sichuan Area and Its Field Application

川东北地区气藏主要为海相碳酸盐岩气藏，已经发现的普光气田，巴中地区和通一南一巴构造的主力气层为嘉二段、飞三段、长兴组，埋深4000—7000m，地层流体性质为含硫化氢、二氧化碳的天然气和地层水，地层压力为常压至异常高压，地层温度100～165℃。针对高压、高产、高含硫的工作环境形成了一套独具特色的川东北测试技术，可大大提高测试成功率并有效缩短测试时间和成本，降低测试对储层的二次污染，从而解决川东北高含硫气井测试的难题。

Northeast Sichuan gas reservoir are mainly marine carbonate gas reservoir,the major gas layers at Bazhong area and South-bar construction of the found Puguang gas field are Ka two section,flying three section and the Changxin group,that are buried depth of 4000-7000m,formation fluid property of which is hydrogen sulfide,natural gas with carbon dioxide and formation water,formation pressure is from normal pressure to abnormal high pressure,reservoir temperature is 100-165C. To the work environment of the high pressure,high yield,high sulfur content,a set of unique Northeast Sichuan testing technology has been formed,which greatly improves the test successful rate and shortens the test time and cost efficiently,reduces the second pollution to formation of the testing operation,which thus solves the well testing problem in Northeast Sichuan area of high sour gas wells.