Wells – Processes – Cleaning or unloading well
Patent
1984-03-19
1985-09-17
Novosad, Stephen J.
Wells
Processes
Cleaning or unloading well
166902, 166295, 166276, E21B 2100, E21B 3706
Patent
active
045414890
ABSTRACT:
Flow-restricting materials containing epoxy resins present in a well treated with an epoxy resin, for the purpose of coating and consolidating unconsolidated sand adjacent the well and/or gravel packing in the well, or of coating metallic equipment in the well, to prevent corrosion or the deposition of organic or inorganic solids on the equipment, by contacting the flow-restricting material with a solvent composition, comprising, N-methyl-2-pyrrolidone and a diluent in an amount of 0 to 80% by wt., for a time sufficient to form a flowable fluid and removing the flowable fluid from the well. Combination well treatments include consolidating sand and/or gravel in a well or coating metallic equipment in the well with an epoxy resin and, thereafter, subjecting the treated well to the above solvent treatment to remove flow-restricting materials from the well.
REFERENCES:
patent: 3402770 (1968-09-01), Messenger
patent: 3976135 (1976-08-01), Anderson
patent: 4072194 (1978-02-01), Cole et al.
patent: 4085059 (1978-04-01), Smith et al.
patent: 4276186 (1981-06-01), Bakos et al.
patent: 4323662 (1982-04-01), Oba et al.
Kisliuk Bruce M.
Novosad Stephen J.
Phillips Petroleum Company
Steininger C. F.
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