应用测井资料计算地应力以及地层破裂压力——以库车坳陷克拉A井解释为例

Apply logging data to estimate in-situ stress and formation fracture pressure

在石油勘探开发过程中,人们越来越认识到地应力方向的重要性。水力压裂缝的延伸方向以及注采井网合理布置等,都和地应力的方向有密切关系。现今地应力方向及其大小对于钻井工艺设计、储层压裂改造和开发设计等都具有重要意义。利用DSI测井资料可以获取地层的纵、横波资料,进行岩石机械特性参数计算,依据岩石力学原理,可计算地应力及预测地层破裂压力。

In the oil exploitation , the formations that have low porosity and low permeability all need to adopt the water power to press the fracture, then can acquire the industry oil to flow, raise the productivity of the oil well. All these are related to the in-situ stress. Make use of the logging data,we can calculate the in-situ stress and predict the formation fraeture pressure.