Invention Grant
- Patent Title: Oilfield operation using a drill string
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Application No.: US14994064Application Date: 2016-01-12
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Publication No.: US10087752B2Publication Date: 2018-10-02
- Inventor: Sylvain Bedouet
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee Address: US TX Sugar Land
- Agent Michael Dae
- Main IPC: E21B17/07
- IPC: E21B17/07 ; E21B47/06 ; E21B49/00 ; E21B17/02 ; E21B33/076 ; E21B33/124

Abstract:
Collecting temperature data at a plurality of locations along a wellbore, performing thermo-mechanical simulations of a drill string in response to mud circulation wherein the drill string comprises a tool string suspended in the wellbore from a pipe string, determining changes in length of the pipe string due to temperature changes, positionally fixing the tool string at one of the locations, and adjusting the length of the pipe string based on the determined change in length of the pipe string. Positionally fixing the tool string may comprise lowering the drill string a side entry sub of the drill string is proximate a top end of the wellbore wherein the side entry sub is configured to allow a wireline cable to enter a bore of the drill string, positioning the side entry sub above a blow-out-preventer, and closing the blow-out-preventer around the drill string below the side entry sub.
Public/Granted literature
- US20160123140A1 Oilfield Operation Using A Drill String Public/Granted day:2016-05-05
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