Sand consolidation methods
A method is described for consolidating unconsolidated mineral particles including sand in a subterranean petroleum formation penetrated by a well in fluid communication with at least a portion of the formation. The method consists of: (a) providing a fluid comprising a polymerizable resin, a polar organic diluent for the resin, and an oil soluble acid catalyst capable of causing polymerization of the resin at formation temperatures comprising orthonitrobenzoic acid; (b) injecting the fluid into the formation to saturate at least a portion of the formation adjacent to the well; (c) providing an aqueous fluid comprising water containing selected inorganic salts including sodium chloride in a concentration at least 70% of saturation of the inorganic salts at surface ambient temperature; (d) injecting the salt containing aqueous solution into the same portion of the formation contacted by the resin containing fluid; and (e) allowing the injected fluids to remain in the formations for a period of time sufficient to accomplish at least partial polymerization of the resin, forming a permeable consolidated mass around the wellbore.
- Assignee:
- Texaco, Inc., White Plains, NY
- Patent Number(s):
- US 4842072
- OSTI ID:
- 5568626
- Country of Publication:
- United States
- Language:
- English
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Sand consolidation methods
Sand consolidation methods
Related Subjects
020300* -- Petroleum-- Drilling & Production
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
DISPERSIONS
FLUID INJECTION
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERIZATION
POLYMERS
RESINS
SALTS
SAND CONSOLIDATION
SOLUTIONS
WELL COMPLETION
WELLS