Gel for retarding water flow
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 3, 1990
Issued Date -
N/A
app pub date -
Aug 1, 1988
filing date -
Jul 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polyvinyl alcohol-aldehyde gel having a high water content and low degree of crosslinking is provided which has improved stability. The gel can be used to retard the flow of water in subterranean formations encountered in hydrocarbon production. One embodiment of the invention provides a method of forming the gel in-situ in the pores of subterranean zones thereby retarding or blocking the flow of water therein. This application is a continuation application of copending Ser. No. 027,723, filed Mar. 19, 1987, now abandoned which was a divisional application of Ser. No. 693,680, filed Jan. 22, 1985, now U.S. Pat. No. 4,664,194 which was a continuation-in-part application of Serial No. 514,557, filed Jul. 18, 1982, now U.S. Pat. No. 4,498,540 which issued Feb. 12, 1985.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully