Prepacked screen
AssigneeTexaco Inc.
InventorsBilly W. Surles, Howard L. McKinzie
Life of this patent
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Abstract
Disclosed is an improvement in a prepacked well screen assembly which includes coating the granular material in the filter medium with a resin system including an oligomer of furfuryl alcohol, a catalyst including an oil soluble, slightly water soluble organic acid, and an ester of a weak organic acid to consume water produced by the polymerization of the resin.
Claims18
In any version of a prepacked well screen assembly well known in the industry, comprising a wire screen and perforated casing with an annular space between filled with granular material,
- the improvement wherein said granular material is coated with a resin composition comprising an oligomer of furfuryl alcohol, an acid catalyst and an ester of a weak organic acid.
A method for improving resistance to strong chemicals and increasing the thermal stability of granular material in a prepacked screen which comprises:
- coating the granular material with a resin system consisting essentially of an oligomer of furfuryl alcohol, a catalyst comprising an oil soluble, slightly water soluble organic acid, and an ester of a weak organic acid.
Dependencies are inferred from the claim text.