关于有效应力定理预测地层压力的几个问题

Some Problems about Pore Pressure Prediction from Effective Stress Theorem

地层压力预测在石油勘探和开发中是一项非常重要的工作,关于地层压力预测理论和方法的应用存在一些疑问和误解。本文就Terzaghi (1923)和Biot和Williss (1957)提出的有效应力定理中各参数的物理含义和地质含义进行了全面的分析,并且指出了当前地层压力存在的问题和难点,总结了钻前压力预测和钻后压力预测的用途和意义,对进一步提高压力预测精度具有重要的参考价值。

Pore pressure prediction is a very important task in oil exploration and exploitation, and there are some doubts and misunderstandings about the application of theory and method of pore pressure prediction. In this paper, the physical and geological meanings of the parameters in the effective stress theorem presented by Terzaghi (1923) and Biot and Willis (1957) are comprehensively analyzed, and the existing problems and difficulties of pore pressure are pointed out. The purpose and significance of pre-drilling pore pressure prediction and post-drilling pore pressure prediction are summarized, which will enhance the pore pressure prediction accuracy further and are referable for oil exploration and exploitation.