高压气井压井方法的优选

Optimization of well killing method for high pressure gas wells

袁波 汪绪刚 李荣 戴爱国

1.中国石油勘探开发研究院廊坊分院, 河北 廊坊 065007; 2.安东石油技术集团有限公司，北京 100102

(Langfang Branch of Research Institute of PetroleumExploration and Development,CNPC,Langfang 065007,China),

目前油气钻井的难度和深度不断加大，井眼压力与温度较高，井控问题日益突出。如我国西北部油田在勘探开发过程中，常遇到高温高压（超高温超高压）油气层。高压气井压井安全问题已经成为现阶段勘探开发过程中一个比较突出、急待解决的技术难题。而在井控安全中，最为核心的问题就是选取合适、有效的压井方法。文章着重介绍了适合于高压气井压井方法的优选机理，也就是说，在遇到高压气井井涌时究竟选择何种压井方法更为安全可靠的问题。

With the further development of oil and gas exploration, the difficulty of oil and gas drilling is more and more and the well
depth is deeper and deeper. The boreholes are high-pressure and high-temperature and the well control issue has become
increasingly prominent. During the exploration and development of oilfields in the northwest part of our country, we often encounter
the high-pressure and high-temperature (or ultra-high temperature and ultra-high pressure) oil and gas layers. The well control
safety issue of high -pressure gas well has become a prominent technology barrier during the exploration and development
nowadays. The most important question of well control safety is to select a proper and valid well killing method. Whether the well
killing operation succeeds, the safe measures must be determined mainly by selecting proper well killing methods. This paper
preliminary optimization theory about the well killing methods which are fit for high pressure gas wells. In other words, well killing
methods should be correctly chosen in order to keep the well control operation in a safe state when the kick of high pressure gas
well appears.