Invention Grant
- Patent Title: Managing lost returns in a wellbore
- Patent Title (中): 管理井筒中的失去的回报
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Application No.: US11983061Application Date: 2007-11-06
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Publication No.: US07681644B2Publication Date: 2010-03-23
- Inventor: John K. Montgomery , Stuart R. Keller , Nancy M. Krahel , Martin V. Smith , Robert S. Williamson
- Applicant: John K. Montgomery , Stuart R. Keller , Nancy M. Krahel , Martin V. Smith , Robert S. Williamson
- Applicant Address: US TX Houston
- Assignee: ExxonMobil Upstream Research Company
- Current Assignee: ExxonMobil Upstream Research Company
- Current Assignee Address: US TX Houston
- Main IPC: E21B43/267
- IPC: E21B43/267 ; E21B37/00

Abstract:
A method of managing lost returns in a wellbore includes contacting a filter cake with a treating fluid to remove metallic weighting agents from the filter cake, wherein the filter cake is disposed on a face of a formation fracture in the wellbore. The method also includes contacting the filter cake with a proppant slurry, wherein the proppant slurry contacts the filter cake concurrently with the treating fluid or after the treating fluid contacts the filter cake. This method may include increasing the filter cake permeability and may utilize a barite removal agent, such as a chelation agent. At least one related wellbore management method creates a fracture in the wellbore and props open the fracture to increase wellbore integrity to utilize higher weight drilling fluids and prevent fractures from forming further down the wellbore.
Public/Granted literature
- US20080110621A1 Managing lost returns in a wellbore Public/Granted day:2008-05-15
Information query
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