Invention Grant
- Patent Title: Apparatus and method for drilling deviated wellbores
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Application No.: US15772007Application Date: 2016-10-19
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Publication No.: US10883313B2Publication Date: 2021-01-05
- Inventor: David Joe Steele , Clifford Lynn Talley , Doug Durst , Mark C. Glaser
- Applicant: HALLIBURTON ENERGY SERVICES, INC.
- Applicant Address: US TX Houston
- Assignee: HALLIBURTON ENERGY SERVICES, INC.
- Current Assignee: HALLIBURTON ENERGY SERVICES, INC.
- Current Assignee Address: US TX Houston
- International Application: PCT/US2016/057757 WO 20161019
- International Announcement: WO2017/083072 WO 20170518
- Main IPC: E21B23/01
- IPC: E21B23/01 ; E21B29/00 ; E21B33/12 ; E21B29/06 ; E21B7/06 ; E21B43/26

Abstract:
Systems and methods are described for drilling a new secondary wellbore from a primary wellbore in which a production string is already deployed. The production string is severed below a desired kick-off location for the new secondary wellbore and the upstream portion of the production string is withdrawn from the primary wellbore, thereby exposing an end of the remaining production string. A lateral orientation device (LOD) is mounted on the exposed end of the production string. The LOD includes a shoulder for seating on the exposed end, anchoring mechanism(s) to secure the LOD to adjacent tubular(s), and seals to sealingly engage adjacent tubulars. The LOD may include a contoured surface for orientation of a tool, such as a whipstock, which may be utilized to drill a new wellbore. Alternatively, a work string may be coupled with the LOD to perform pumping operations in the wellbore below the LOD.
Public/Granted literature
- US20180313156A1 APPARATUS AND METHOD FOR DRILLING DEVIATED WELLBORES Public/Granted day:2018-11-01
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