Wells – Processes – Cementing – plugging or consolidating
Patent
1990-01-02
1991-04-09
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166300, 523130, E21B 33134, E21B 33138
Patent
active
050056476
ABSTRACT:
Wells penetrating oil-producing and water-producing intervals may be treated in order to reduce the flow rate of water into the well by isolating the water-producing interval and introducing into it a volume of treating fluids sufficient to invade at least six inches into the water-producing interval. Cased wells may be treated to plug holes in the casing caused by corrosion or casing breaks by introducing a treating fluid into the formation adjacent to the break. The treating fluid comprises a material which can be acid catalyzed in a period of from 1 to 16 hours at formation conditions, preferably a monomer or oligomer of furfuryl alcohol. The treating fluid contains from 40 to 60 percent furfuryl alcohol and from 40 to 60 percent of an ester, preferably ethyl acetate or butyl acetate. The catalyst is preferably orthonitrobenzoic acid or toluene sulfonic acid in a concentration of from 1 to 4 percent by weight, selected to produce a set time at the formation temperature in the range of from 1 to 16 hours. The treating fluid also contains an effective amount in the range of 0.5 to 1.5 percent of a water swelling polymer, preferably a copolymer of starch and synthetic polymer (acrylates or acrylamides) to prevent shrinkage of the furfuryl alcohol on polymerization.
REFERENCES:
patent: 2513614 (1950-07-01), Barkhuff, Jr.
patent: 3126959 (1964-03-01), Ortloff
patent: 3785437 (1974-01-01), Clampitt et al.
patent: 4070865 (1978-01-01), McLaughlin
patent: 4091868 (1978-05-01), Kozlowski et al.
patent: 4312605 (1982-01-01), Clarke
patent: 4402633 (1983-09-01), Self
patent: 4512407 (1985-04-01), Friedman
patent: 4817721 (1989-04-01), Pober
patent: 4842072 (1989-06-01), Friedman et al.
patent: 4903770 (1990-02-01), Friedman et al.
Friedman Robert H.
Surles Billy W.
Park Jack H.
Priem Kenneth R.
Suchfield George A.
Texaco Inc.
LandOfFree
Treating underground formations does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treating underground formations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treating underground formations will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2027506