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Title: Sand consolidation methods

Abstract

Methods are provided for selectively consolidating sand grains within a subterranean formation. First an acidic salt catalyst such as ZnCl/sub 2/ is injected into the subterranean formation, wherein the acidic salt catalyst is adsorbed to the surface of the sand grains. Next a polymerizable resin composition such as furfuryl alcohol oligomer is introduced into the well formation. Polymerization of the resin occurs upon exposure to the elevated well temperatures and contact with the acid salt catalyst adsorbed to the sand grains. The polymerized resin serves to consolidate the surfaces of the sand grains while retaining permeability through the pore spaces. An ester of a weak organic acid is included with the resin compositions to control the extent of a polymerization by consuming the water by-product formed druing the polymerization reaction.

Inventors:
Publication Date:
OSTI Identifier:
6841066
Patent Number(s):
US 4427069
Assignee:
Getty Oil Co.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 8 Jun 1981; Other Information: PAT-APPL-271426
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; ACIDIZATION; SAND CONSOLIDATION; OIL WELLS; RESERVOIR ROCK; MICROSTRUCTURE; POROSITY; ZINC CHLORIDES; CATALYTIC EFFECTS; ALCOHOLS; CHEMICAL COMPOSITION; CHEMICAL REACTIONS; FURFURAL; POLYMERIZATION; RESINS; SAND; WELL TEMPERATURE; ALDEHYDES; CHLORIDES; CHLORINE COMPOUNDS; CRYSTAL STRUCTURE; FURANS; HALIDES; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; POLYMERS; RESERVOIR TEMPERATURE; WELLS; ZINC COMPOUNDS; ZINC HALIDES; 020300* - Petroleum- Drilling & Production; 030900 - Natural Gas- Artificial Stimulation, Plowshare- (-1989)

Citation Formats

Friedman, R H. Sand consolidation methods. United States: N. p., 1984. Web.
Friedman, R H. Sand consolidation methods. United States.
Friedman, R H. 1984. "Sand consolidation methods". United States.
@article{osti_6841066,
title = {Sand consolidation methods},
author = {Friedman, R H},
abstractNote = {Methods are provided for selectively consolidating sand grains within a subterranean formation. First an acidic salt catalyst such as ZnCl/sub 2/ is injected into the subterranean formation, wherein the acidic salt catalyst is adsorbed to the surface of the sand grains. Next a polymerizable resin composition such as furfuryl alcohol oligomer is introduced into the well formation. Polymerization of the resin occurs upon exposure to the elevated well temperatures and contact with the acid salt catalyst adsorbed to the sand grains. The polymerized resin serves to consolidate the surfaces of the sand grains while retaining permeability through the pore spaces. An ester of a weak organic acid is included with the resin compositions to control the extent of a polymerization by consuming the water by-product formed druing the polymerization reaction.},
doi = {},
url = {https://www.osti.gov/biblio/6841066}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 24 00:00:00 EST 1984},
month = {Tue Jan 24 00:00:00 EST 1984}
}