摘要
侧斜井井身剖面设计中的关键因素是井间距和各井眼的轨迹。在进行防碰设计中,应重点考虑将井眼的设计方位错开。为使布井方式不变,对侧斜井井身质量要求更高。由于井斜角小及地层的非均质性,不容易形成新井眼,侧斜后方位易漂移,给造斜和井眼控制增加了难度。针对侧斜井的特点,研究了侧斜修井的轨道设计技术,包括轨道靶区、方位、剖面设计和井身参数计算。
The key factors in sidetracking well profile design are inter-well distance and well course. The course bearing shall be staggered between each other. In order to keep the hole pattern unchanged, higher requirement is placed on wellbore quality. Because of small deviation angle and heterogeneous formation, it is difficult to form new hole, and hole direction is easy to deviate after conducting inclinometry, thus bringing difficulty to angle build-up and hole control. The course design for workover of sidetracking well is studied, including course target, azimuth, profile and well bore parameter calculation, thus providing reference to field operation.
出处
《特种油气藏》
CAS
CSCD
2005年第2期72-73,78,共3页
Special Oil & Gas Reservoirs
关键词
修井
套损
轨道设计
侧斜
靶区
workover
casing failure
course design
sidetracking, target
