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目前国外普遍通过声波测井和电阻率测井确定泥岩孔隙度异常来估算邻近砂层的孔隙流体压力。由于产生高压异常层的机理不同,这种技术不能用来估计高压注水油田的地层压力。本文介绍利用测井资料估算注水油田地层压力的理论基础和方法。所得的油井地层压力预测结果与单层试油资料相近,这对提高注水开发油田调整井的固井质量和油田开发的动态分析、制定注采方案提供了重要依据。
At present, acoustic pressure logging and resistivity logging are generally used to determine the pore fluid pressure near the sandstone. This technique can not be used to estimate formation pressure in high-pressure injection fields because of the different mechanisms that create high-pressure anomalies. This article describes the theoretical basis and method for estimating formation pressure in a flooded field using log data. The predicted formation pressure of the oil well is similar to that of the single layer test oil, which provides an important basis for improving the cementing quality of the well in oilfield development and the dynamic analysis of oilfield development, and formulating the injection and production plan.