Sand consolidation methods

Patent · Tue Jun 27 00:00:00 EDT 1989

OSTI ID:5568626

Friedman, R H; Surles, B W

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
• Resource Relation: Patent File Date: 25 Jul 1988
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
SAND CONSOLIDATION
AQUEOUS SOLUTIONS
FLUID INJECTION
POLYMERIZATION
RESINS
SALTS
WELL COMPLETION
CHEMICAL REACTIONS
DISPERSIONS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
SOLUTIONS
WELLS
020300* - Petroleum- Drilling & Production