Invention Grant
- Patent Title: Methods for placing multiple stage fractures in wellbores
- Patent Title (中): 在井筒中放置多台骨折的方法
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Application No.: US12341723Application Date: 2008-12-22
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Publication No.: US07798227B2Publication Date: 2010-09-21
- Inventor: John Gordon Misselbrook
- Applicant: John Gordon Misselbrook
- Applicant Address: US TX Houston
- Assignee: BJ Services Company LLC
- Current Assignee: BJ Services Company LLC
- Current Assignee Address: US TX Houston
- Agency: Howrey LLP
- Main IPC: E21B43/267
- IPC: E21B43/267

Abstract:
A production tubing comprising a liner is placed downhole in a wellbore. A fluid pill containing proppant is squeezed into the annulus between the formation and liner, thereby packing the proppant into the annulus, effectively isolating the annulus. The packed proppant is permeable to liquids but impermeable to fracturing proppants. After isolation of the annulus, the wellbore may be perforated using a resettable perforation assembly. Once perforating is complete, the wellbore is fractured. The presence of the packed proppant in the annulus generates resistance to the flow of fracturing fluid along the annulus, forcing the fracture to propagate down the perforation tunnels, while also allowing subsequent production fluids to be produced along the annulus.
Public/Granted literature
- US20100155065A1 METHODS FOR PLACING MULTIPLE STAGE FRACTURES IN WELLBORES Public/Granted day:2010-06-24
Information query
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