Invention Grant
- Patent Title: Frequency sweeping tubewave sources for liquid filled boreholes
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Application No.: US16733547Application Date: 2020-01-03
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Publication No.: US11359622B2Publication Date: 2022-06-14
- Inventor: Rod Shampine , Rajesh Luharuka , Edward Leugemors , Laurent Coquilleau , John Daniels
- 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
- Main IPC: E21B43/12
- IPC: E21B43/12 ; F04B47/02 ; F04B23/06 ; E21B47/18 ; E21B47/00 ; E21B47/09 ; E21B47/0224

Abstract:
A system for generating variable frequency tube waves includes a high pressure multiplex pump having a number of plungers, with each plunger operatively coupled to a suction valve on a suction side and a discharge valve on a discharge side. The suction valve or the discharge valve of a first one of the plungers includes an opening, such that the modified plunger on a discharge stroke pushes fluid through the opening in the suction or discharge valve. The system includes a tubular fluidly coupling the high pressure multiplex pump to a wellbore, and a pressure sensor that receives tube waves generated by the high pressure multiplex pump and reflected from the wellbore.
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