Donald D. Bruning - Houston TX Donald R. Weir - Borger TX
Assignee:
Phillips Petroleum Company - Bartlesville OK
International Classification:
C09K 700
US Classification:
523130
Abstract:
A water permeability contrast correction process to improve the sweep efficiency of waterflooding which involves the sequential injection of (1) an optional aqueous preflush slug to adjust connate water salinity, (2) an aqueous thickened slug comprising a sequestered polyvalent metal cation such as aluminum citrate and a gelable polymeric viscosifier such as polyacrylamide, (3) carbon dioxide to decrease the pH of the polymer slug which triggers the delayed in-situ gelation of said thickened slug to preferentially decrease water permeability in highly permeable thief zones, and (4) an aqueous drive fluid.
25 posts-1 author-Last post:May 28MySpace profile for Donald Weir. Find friends, share photos, keep in touch with classmates, and meet new people on MySpace.
Paterson Vocational & Technical School Paterson NJ 1953-1957
Community:
Donald Parks, Robert Ammeraal, Gene Covello, John Modderman, Phil Andrews, Phil Stonehouse, Dennis Garrabrant, Herman Fuhr, Dave Dicarlo, Leo Mclaughlin, Robert Dubovick, Kenneth Garbowski