摘要
通过对多种测井资料的分析,分析了引起地层各向异性的原因,并选取主要受地应力引起各向异性的井段,用WSTT测井资料进行了各向异性的计算,得到了最大水平主应力方向。通过与其他方法计算的最大水平主应力方向比较,认为该方法非常有效。将该方法应用到国外某油田碳酸盐岩地层,准确区分了裂缝引起的各向异性和地应力引起的各向异性,并计算出了各自的方位,收到了良好的效果,为油田的开发提供了重要的资料。
By analyzing the available logging data in carbonate formation,the reasons of formation anisotropy were identified accurately. After picking up logging intervals with anisotropy only caused by ground stress,the WSTT data was applied to calculate the anisotropy by using the fast and slow shear wave,and the azimuth of maximum horizontal stress was then achieved. This method was proved to be useful and reasonable after the comparison to the result from other methods. When evaluating stress in carbonate formations of a certain oilfield abroad,the anisotropy caused by fractures and stress is separated exactly and the each azimuth is then calculated,better effect is obtained,It provides a good way for evaluating stress in complex carbonate formations.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第2期267-270,共4页
Journal of Oil and Gas Technology
