Injection molded degradable casing perforation ball sealers
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United States of America Patent
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Nov 23, 1999
Issued Date -
N/A
app pub date -
Apr 6, 1998
filing date -
Apr 6, 1998
priority date (Note) -
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Abstract
A degradable ball sealer for use in the oil and gas industry is disclosed. The ball seat comprises a particular composition of matter and injection molding technique that provides a ball seal which will dissolve in stimulation or wellbore fluids after stimulation operations are complete. In use, the surface of the ball sealer softens slightly assuring a solid seal between the ball the and the casing perforation. The composition when dissolved into wellbore fluids does not pose a hazard and disperses well in aqueous based wellbore fluids. The same composition, made into a larger ball, may be used as a tubing sealer for pressure testing.
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