南川地区页岩气地层压力地震预测方法研究

Study on Seismic Prediction Method of Shale Gas Stratum in Nanchuan Area

准确预测地层压力有利于帮助认识和发现新的油气层。着重介绍并分析了地层压力地震预测方法,探讨了其在南川区块的应用。在南川区块开展的压力预测结果显示,工区内龙马溪-五峰组优质页岩主要为由生烃引起的压力异常,平桥背斜和东胜背斜压力系数平均在1.53左右,属于超压地层,总体分布较均匀。

Accurate prediction of formation pressure is conducive to understanding and discovering new oil and gas layers. This paper introduced and analyzed the method of seismic prediction of formation pressure and discussed its application in Nanchuan area. The pressure prediction results in the Nanchuan area showed that the pressure anomaly of high-quality shale of the Longmaxi-Wufeng Formation in the work area was mainly caused by hydrocarbon generation, and the pressure coefficient of Pingqiao anticline and Dongsheng anticline was about 1.53 which belongs to overpressure stratum and was generally evenly distributed.