Invention Grant
- Patent Title: Downhole operations using remote operated sleeves and apparatus therefor
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Application No.: US16884842Application Date: 2020-05-27
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Publication No.: US11319802B2Publication Date: 2022-05-03
- Inventor: Mark Andreychuk , Per Angman , Allan Petrella
- Applicant: KOBOLD CORPORATION
- Applicant Address: CA Calgary
- Assignee: KOBOLD CORPORATION
- Current Assignee: KOBOLD CORPORATION
- Current Assignee Address: CA Calgary
- Agency: Parlee McLaws LLP
- Agent Patrick Laycock
- Main IPC: E21B34/16
- IPC: E21B34/16 ; E21B34/14 ; E21B43/26 ; E21B47/12 ; E21B33/14 ; E21B43/12

Abstract:
One or more remote-operated sleeve valves are placed along a tubular string downhole. The sleeves can be opened and closed wirelessly, and in embodiments over and over again. Differential pressure between wellbore fluid pressure and an accumulator chamber enable repeated shifting. Each sleeve can have a unique actuation code removing constraints regarding sequence of operation and need for well intervention to access the sleeves. Hydraulic fracturing can be achieved without wellbore obstructions, and other operations benefit for reduced expense in service rigs and the ability or selectively shut off problem zones. Remote signals received downhole include those generated by percussive and seismic, distinguishable from background noise including during pumping.
Public/Granted literature
- US20200284144A1 DOWNHOLE OPERATIONS USING REMOTE OPERATED SLEEVES AND APPARATUS THEREFOR Public/Granted day:2020-09-10
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