摘要
介绍了地应力测试的差应变分析(DSA)法和古地磁定岩心方位的方法,进行了台105井和台601井的3块DSA试验岩心和17块古地磁岩样的测试。通过差应变分析与古地磁的结合,最终得出两口井的最大主应力方向分别为N117.5°E(台105)和N108.5°E(台601)。最大主应力方向并非铅垂方向,而是与其存在一定的角度。
The formation fractures ,faults and structures developed under insitu stress provide the migrating paths and storage space for oil & gas while the institu stress itself serves as one of the driving forces. The wellbore stability, casing deformation and destroy in drilling process, and the reasonable well spacing,optimization design for hydraulic fracture in oilfield development are all related to the insitu stress's module and direction. This paper introduces a determining method for analyzing insitu stress, which obtains good results in the applications.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2005年第S2期87-88,95+8,共4页
Journal of Oil and Gas Technology
关键词
差应变分析
古地磁定向
地应力方向
应用
differential strain analysis
palaeo-magnetism orientation
insitu stress direction
application
