Invention Grant
- Patent Title: Nonstop transition from rotary drilling to slide drilling
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Application No.: US15939927Application Date: 2018-03-29
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Publication No.: US10851640B2Publication Date: 2020-12-01
- Inventor: Colin Gillan
- Applicant: Nabors Drilling Technologies USA, Inc.
- Applicant Address: US TX Houston
- Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
- Current Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
- Current Assignee Address: US TX Houston
- Agency: Haynes and Boone, LLP
- Main IPC: E21B44/04
- IPC: E21B44/04 ; E21B3/02 ; E21B7/04 ; E21B47/00 ; E21B4/02 ; E21B47/06 ; E21B47/024 ; E21B7/06

Abstract:
Systems, devices, and methods for transitioning from a rotary drilling operation to a slide drilling operation on a drilling rig include rotary drilling a borehole in a subterranean formation by rotating a bottom hole assembly (BHA) on a drill string driven by a top drive and determining a trapped torque in a drill string. While maintaining weight on bit at the BHA, the drill string may be rotated in reverse to remove the trapped torque, and a slide drilling process may be performed without raising the bit from the bottom of the borehole.
Public/Granted literature
- US20190301273A1 NONSTOP TRANSITION FROM ROTARY DRILLING TO SLIDE DRILLING Public/Granted day:2019-10-03
Information query
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