Invention Grant
- Patent Title: Rotating continuous flow sub
- Patent Title (中): 旋转连续流动
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Application No.: US12984429Application Date: 2011-01-04
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Publication No.: US08627890B2Publication Date: 2014-01-14
- Inventor: Thomas F. Bailey , Mark A. Mitchell , David Pavel , Lev Ring , Ram K. Bansal , David Iblings
- Applicant: Thomas F. Bailey , Mark A. Mitchell , David Pavel , Lev Ring , Ram K. Bansal , David Iblings
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: E21B21/02
- IPC: E21B21/02 ; E21B34/00
Abstract:
A method for drilling a wellbore includes drilling the wellbore by advancing the tubular string longitudinally into the wellbore; stopping drilling by holding the tubular string longitudinally stationary; adding a tubular joint or stand of joints to the tubular string while injecting drilling fluid into a side port of the tubular string, rotating the tubular string, and holding the tubular string longitudinally stationary; and resuming drilling of the wellbore after adding the joint or stand.
Public/Granted literature
- US20110155379A1 ROTATING CONTINUOUS FLOW SUB Public/Granted day:2011-06-30
Information query
