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超高压及异常高压气藏地层压力有缆实测难度大、风险高、且存在极大的安全隐患。本文通过对产能二项式方程及考虑储层应力敏感等因素的研究,寻求到一种利用生产数据实时求取地层压力的方法,从与实测数据的对比情况来看,该方法误差不超过0.8%,计算结果可有效地应用于科研与生产。对制定合理的开发技术政策,跟踪数值模拟研究,优化单井配产,提高气田最终采收率均具有重要作用,对于其他同类型气藏开发更具有借鉴和指导意义。
It is difficult and dangerous to test the formation pressure of the UHP and abnormally high pressure gas reservoirs, and there is a great potential safety hazard. In this paper, through the study of productivity binomial equation and the consideration of reservoir stress sensitivity and other factors, a method of obtaining formation pressure using production data is obtained in real time. Compared with the measured data, the error of this method does not exceed 0.8 %, The calculation results can be effectively applied to scientific research and production. It plays an important role in formulating reasonable development technology and policy, tracking numerical simulation, optimizing single-well allocation and improving ultimate recovery ratio of gas field, which is of great reference and guidance for other gas reservoirs of the same type.