摘要
超深硬地层小井眼侧钻由于受到钻具造斜率、地层硬度等因素的制约,一次侧钻成功率不高,如何确定合理的钻具组合以提高钻具造斜率是成功侧钻的关键。为此,根据元坝10-1H井侧钻施工情况,分析了该井成功侧钻的要素,重点对钻具组合的选取进行了探讨,并根据探讨结果对钻具组合进行了进一步优化。总结分析出该区块?165.1 mm井眼"?165.1 mm PDC钻头+?127 mm直螺杆+?127 mm2.25°弯接头"的侧钻钻具组合,以便同类井的侧钻施工予以借鉴。
During a slim-hole sidetracking for extra-deep and hard formations, the first sidetracking is always inefficient due to both build-up rate of drilling tools and hardness of formations. So, it's very critical to adopt suitable drilling assembly to increase this rate. Taking the sidetracking of 10-1H well in Yuanba area as an example, we analyzed some factors affecting it successful sidetracking, discussed how to select the drilling assembly, and optimized this assembly. Results show the best assembly for the hole of φ165.1 mm in this area should be the PDC bit of φ165.1 mm, the straight screw of φ127 mm, and the 2.25°bending joint of φ127mm, individually.
出处
《天然气技术与经济》
2016年第4期33-35,75,共4页
Natural Gas Technology and Economy
关键词
超深
硬地层
小井眼
侧钻
钻具组合
extra deep
stiff formation
slim hole
sidetracking
drilling assembly
