Invention Grant
- Patent Title: Apparatus, systems, and methods for dampening a wellbore pressure pulse during reverse circulation cementing
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Application No.: US16490869Application Date: 2018-11-06
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Publication No.: US11261694B2Publication Date: 2022-03-01
- Inventor: Simon David Turton , Paul Joseph Jones , John Singh , Michael Linley Fripp , Lonnie Carl Helms
- 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
- Agency: Haynes and Boone, LLP
- International Application: PCT/US2018/059316 WO 20181106
- International Announcement: WO2020/096568 WO 20200514
- Main IPC: E21B33/14
- IPC: E21B33/14 ; E21B34/06 ; E21B41/00

Abstract:
Apparatus, systems, and methods for reverse circulation cementing a tubular string in a wellbore. One such method includes reverse circulating cement slurry down an annulus defined between the tubular string and the wellbore. During the reverse circulation, a flow control device located in the tubular string is closed to prevent, or at least reduce, flow of the cement slurry from the annulus into the tubular string. The closure of the flow control device causes a pressure pulse in the wellbore. After the flow control device is closed, the reverse circulation is stopped. During a time interval between the closure of the flow control device and the stoppage of the reverse circulation, a shock absorber associated with the flow control device absorbs the pressure pulse in the wellbore so that a pressure in the wellbore is maintained within an acceptable range.
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