摘要
用有限元法分别对有１～３条水平裂缝井眼在压裂时油层附近的井眼位移分布进行了计算。计算结果表明，增加裂缝数，并未使井眼位移的影响范围和位移的绝对值成倍增加，而是使裂缝周围区域的岩石更加紧密，同时还使裂缝处的水泥环承受巨大的拉应力，这样可能导致水泥环被破坏。
The finite element method is used for computing the displacement of well bore near the oil reservoir in the horizontal fracturing well with 1～3 fractures. The results of the computation show that increase of the fracture number can not enlarge the displacement of wellbore and expand its affecting range proportionally, but that it can compact the surrounding rock and change porosity and permeability of rock. There is a high axial stress in the cement annulation near the fracture, which may cause cement annulation cracking.
出处
《石油大学学报（自然科学版）》
EI
CSCD
1998年第4期72-74,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
压裂
水平裂缝
有限元法
井眼位移
油层
fracturing
horizontal fracture
borehole
displacement
finite element method
