偏轴防斜钻具的研究及在江苏部分地区的应用

STUDY ON THE ECCENTRIC DEFLECTION CONTROLLING BHA AND ITS APPLICATION IN JIANGSU

丰全会 窦正道 张宗林 王珍应

Feng Quanhui Dou Zhengdao Zhang Zonglin Wang Zhenying

江苏石油勘探局工程研究院, 江苏扬州 225000 中国石油勘探开发研究院, 北京 100083

通过对偏轴钻具组合工作原理及应力情况的理论和室内试验的分析研究,分别在江苏句容地区中古生界高陡构造和其它新生界地层的钻井中进行了现场试验和应用,并取得了很好的效果,井斜可得到有效控制,机械钻速可得到较大提高。

The eccentric BHA is consisted of an eccentric sub and a certain amount of drill collars, and the placement of the sub various. Its deflection controlling mechanism and stress distribution have been studied and tested in the laboratory condition, and field testing and application carried out in Jurong area of Jiangsu, in drilling the abrupt structures in the Middle Paleozoic Era and the Cenozoic Era. Good results have been obtained, as the hole deflection was effectively controlled and penetration rate was also significantly improved.

10.3969/j.issn.1000-7393.2002.02.002