Sand consolidation methods
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.
- Assignee:
- Getty Oil Co.
- Patent Number(s):
- US 4427069
- OSTI ID:
- 6841066
- Resource Relation:
- Patent File Date: Filed date 8 Jun 1981; Other Information: PAT-APPL-271426
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
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