一种反循环钻井装置
By designing a reverse circulation drilling device, the problems of directional drilling and well leakage in shale gas drilling in southern Sichuan were solved, realizing reverse circulation drilling and directional drilling with ordinary drill bits, and improving drilling efficiency and safety.
CN120830441BActive Publication Date: 2026-07-17CHINA NAT PETROLEUM CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA NAT PETROLEUM CORP
- Filing Date
- 2024-04-23
- Publication Date
- 2026-07-17
Smart Images
Figure CN120830441B_ABST
Abstract
本发明属于钻井技术领域，特别涉及一种反循环钻井装置，包括井口换向器和井底换向器；所述井口换向器的外壁安装有连接结构，所述连接结构用于将井口换向器与地面设备连通，所述连接结构上设置有出液口，所述井口换向器的一端与所述地面设备连接，所述井口换向器的另一端与双壁钻杆连接；所述井底换向器的一端与满眼转换器连接，所述井底换向器的另一端与钻头连接；所述满眼转换器的另一端与双壁钻杆连接；所述井底换向器上设置有喷嘴；使得MWD定向仪器信号可以从双壁钻杆中传输出来，实现定向钻井，并且通过满眼转换器对井壁的支撑性来满足钻井过程中保直的技术要求。
Need to check novelty before this filing date? Find Prior Art