Invention Grant
- Patent Title: Downhole under-reamer and associated methods
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Application No.: US15916694Application Date: 2018-03-09
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Publication No.: US10294728B2Publication Date: 2019-05-21
- Inventor: Brian Andrew McCarthy , Philip Graham Rodger
- Applicant: NOV Downhole Eurasia Limited
- Applicant Address: GB Stonehouse
- Assignee: NOV Downhole Eurasia Limited
- Current Assignee: NOV Downhole Eurasia Limited
- Current Assignee Address: GB Stonehouse
- Agency: Conley Rose, P.C.
- Priority: GB1411412.8 20140626
- Main IPC: E21B10/32
- IPC: E21B10/32 ; E21B7/28
Abstract:
A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.
Public/Granted literature
- US20180195349A1 DOWNHOLE UNDER-REAMER AND ASSOCIATED METHODS Public/Granted day:2018-07-12
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