Invention Grant
- Patent Title: Apparatus and method for increasing the amount of dynamic underbalance in a wellbore
- Patent Title (中): 用于增加井筒动态不平衡量的装置和方法
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Application No.: US12792209Application Date: 2010-06-02
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Publication No.: US08408308B2Publication Date: 2013-04-02
- Inventor: Adil Mahallab Al Busaidy
- Applicant: Adil Mahallab Al Busaidy
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Main IPC: E21B37/00
- IPC: E21B37/00

Abstract:
A method for use in a wellbore includes the steps of providing an elongated, closed tubular body defining an internal chamber wherein the tubular body has an external surface formed with treated areas and an elongated recess extending longitudinally of the tubular body and running through the treated areas; retaining a detonating device in the recess adjacent the external surface of the tubular body; positioning the tubular body with the detonating device in a wellbore adjacent perforation tunnels previously formed in a surrounding well formation and filled with debris; and activating the detonating device to rupture the tubular body inwardly along the external surface forming the recess at the treated areas to expose the chamber within the tubular body to a dynamic underbalanced pressure condition such that fluid from the wellbore and debris from the perforation tunnels is drawn through the wellbore and into the chamber.
Public/Granted literature
- US20100300690A1 APPARATUS AND METHOD FOR INCREASING THE AMOUNT OF DYNAMIC UNDERBALANCE IN A WELLBORE Public/Granted day:2010-12-02
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