高温高压气井地层压力随钻监测方法研究

RESEARCH OF INSPECTING WHILE DRILLING IN HIGH-TEMPERATURE AND HIGH-PRESSURE FORMATION

在高温高压气井钻井过程中,对地层压力随钻监测精度要求非常高。利用dc指数法和岩石强度法2种地层压力监测方法对多口高温高压试验井进行了随钻监测,通过其钻后的综合分析,结果表明,岩石强度法对高温高压气层的压力监测更适合,精度更高,可为以后高温高压气层的地层压力随钻监测工作提供参考。

During drilling in high-temperature and high-pressure gas well, the accuracy request of the formation pressure inspection is very high. We have inspected the formation pressure while drilling in many high-temperature and high-pressure test wells by making use of the dc index and rock strength methods. Based on the comprehensive analysis after drilling, the results indicate that the rock strength method is more suitable to inspect the formation pressure of high-temperature and high-pressure gas stratum, and the accuracy is higher. It can offer the reference for the inspection while drilling for high-temperature and high-pressure gas stratum.