Invention Grant
US07789163B2 Dual-stage valve straddle packer for selective stimulation of wells
失效
用于选择性刺激井的双级阀门跨越式封隔器
- Patent Title: Dual-stage valve straddle packer for selective stimulation of wells
- Patent Title (中): 用于选择性刺激井的双级阀门跨越式封隔器
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Application No.: US12003269Application Date: 2007-12-21
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Publication No.: US07789163B2Publication Date: 2010-09-07
- Inventor: Robert Kratochvil , Scott Kirk , Dan Schofield , Darko Smolcic
- Applicant: Robert Kratochvil , Scott Kirk , Dan Schofield , Darko Smolcic
- Applicant Address: CA Calgary, AB
- Assignee: Extreme Energy Solutions, Inc.
- Current Assignee: Extreme Energy Solutions, Inc.
- Current Assignee Address: CA Calgary, AB
- Agency: Diederiks & Whitelaw, PLC
- Main IPC: E21B33/124
- IPC: E21B33/124
Abstract:
A straddle packer which, when in place during a fracing or well stimulation service, isolates the fracing zone from zones in the wellbore above and below the fracing zone, and which when run into the wellbore provides an open passageway from below the packer to the tubing string, relieving built up fluid pressure below the tool and permitting insertion at relatively high speeds.
Public/Granted literature
- US20090159299A1 Dual-stage valve straddle packer for selective stimulation of wells Public/Granted day:2009-06-25
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