摘要
水平井钻井的最大难题是如何降低钻井摩阻。目前降低摩阻的工具主要有轴承短节、低扭矩钻杆、DSTR短节、振荡减阻器等,而对非旋转钻杆护箍降低摩阻作用的研究较少。与非旋转钻杆护箍相比,其它各种工具均具有一定局限性,主要表现在接头和短节使用太多会降低钻具安全性,容易形成键槽等。腰青33-2HF井水平段钻进时采用非旋转钻杆护箍,大大降低了钻具与井眼的摩阻,使钻速提高了40.40%,钻井周期缩短57.79%,为水平井钻井提供了很好的借鉴。
How to reduce drilling friction is the most difficult problem in horizontal drilling, Main tools for friction reducing are bearing sub, low-torque drill pipe, DSTR nipple joint, oscillating drag reduction device, only a few research on non-ro- tational drill pipe protector for friction reducing has been conducted. Comparing with non-rotational drill pipe protector, the other tools have some limitations, mainly in lower safety for too many subs or joints and key seats creating. Non-rotational drill pipe protector was used in the horizontal section drilling of Yaoqing 33 - 2HF, the friction between drilling tool and borehole was greatly reduced, so that drilling speed increased by 40.40% and the drilling cycle was shorten 57.79%, which provides reference for long horizontal well operation in the future.
出处
《探矿工程（岩土钻掘工程）》
2016年第8期24-28,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
中国石油化工股份有限公司项目"长水平段水平井钻完井技术研究"(编号:34500000-12-ZC0607-0070)
"涪陵页岩气水平井提速降本钻井技术研究"(编号:10010099-14-FW0403-0001)
关键词
非旋转钻杆护箍
长水平段
水平井
降低摩阻
扭矩
工具
non-rotational drill pipe protector
long horizontal section
horizontal well
friction reducing
torque
tools
