摘要
金溪2井属高陡构造,存在地层倾角大、自然造斜率强、可钻性差等复杂地质特征。常规防斜打快钻具在该区的应用,体现出诸多的不适应性,如机械钻速低、井斜难以控制、钻井工具断裂等。本文基于导向涡轮钻具在金溪2井中的现场施工应用,采用纵横弯曲梁法,对该导向涡轮钻具进行了防斜效果研究。研究证明,导向涡轮钻具应用于金溪2井机械钻速得到了大幅提高(与常规钻具相比,提速130.01%),井斜角由入井时的3.7°降为出井时的1.1°,钻头侧向力计算结果为负,表现为降斜力。建议在该区进一步推广应用。
Jinxi well No.2 belongs to precipitous structure. There exist complex geological features, such as large stratigraphic dip, strong natural build-up rate, poor drillability. Conventional anti-inclined drilling tools have embodied many inadaptabilities in the area, such as low rate of ROP, the difficulty to control hole deviation, the fracture of the drilling tool, etc. So the steerable turbodrill was applied in Jinxi well No.2. The beam-column theory was used to study inclining prevention effect of the steerable turbodrill in Jinxi well No.2. The results show that application of the steerable turbodrill can improve the rate of penetration dramatically in Jinxi well No.2 （Compared with conventional drilling tools, faster 130.01%）.The angle reduces from 3.7°in well to 1.1° out well. The calculation result of bit lateral-force is negative and the lateral-force shows that it can drop the angle in the hole.
出处
《辽宁化工》
CAS
2015年第1期89-91,共3页
Liaoning Chemical Industry
关键词
金溪2井
高陡构造
导向涡轮钻具
纵横弯曲梁法
钻头侧向力
Jinxi well No.2
precipitous structure
steerable turbodrill
beam-column theory
bit lateral-force
