摘要
为了研究山前高构造带地应力区的井眼稳定性随井斜角、方位角的变化规律 ,在室内自制岩样进行真三轴试验。研究结果表明 ,当垂向应力为中间应力时 ,斜井的稳定性随井斜角的增大而增大。三个应力不相等时 ,平行于最小水平应力方向的井眼比平行于最大水平应力方向的井眼稳定。
The relation ship among borehole stability, deviation angle, and orientation angle in the high structural belt is investigated. The true triaxial test is made in lab on sandstone. The results indicate the stability of deviated wells increases with deviation increment when the vertical stress is intermediate stress. When the three unequal stresses exist in three directions, the wells drilled parallel to the minimum horizontal stress will be more stable than those parallel the maximum horizontal stress.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2000年第z1期913-916,共4页
Chinese Journal of Rock Mechanics and Engineering
关键词
模拟实验
井眼稳定
地应力
井斜角
方位角
simulation test, borehole stability, in situ stress, deviation angle, orientation angle
