Method of reducing sand production from a wellbore

A wellbore and perforation technology, applied in the direction of wellbore/well components, drilling equipment and methods, earthwork drilling and production, etc., can solve problems such as clogging of holes, screens or sandstone filter layers, reduction of fluid products, etc.
CN1878928AInactive Publication Date: 2006-12-13SHELL INT RES MAATSCHAPPIJ BV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHELL INT RES MAATSCHAPPIJ BV
Publication Date
2006-12-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method is provided for the reduction of inflow of rock particles from an earth formation into a wellbore for the production of hydrocarbon fluid. The method comprises creating a zone of reduced compressive stiffness around the wellbore by removing rock material from the wall of the wellbore.
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Description

technical field

[0001] The present invention relates to a method of reducing the flow of rock particles from an earth formation into a wellbore used to produce hydrocarbon fluids. Reservoir rocks are generally loosely bound and thus tend to disintegrate and flow into the wellbore under the influence of hydrocarbon fluids flowing through the pores. Background technique

[0002] This influx of rock particles is generally indicative of sand production, which is a frequent problem in the hydrocarbon fluid production industry because the sand particles produced tend to corrode production equipment such as piping systems and valves. Traditional methods of sand control include installing perforated support liners or screens that allow the passage of hydrocarbon fluids but exclude sand particles. A sand screen is also installed between the liner or screen and the borehole wall to control sand production. While such liners, screens, and sand filters are often used successfully, the...

Claims

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