| 摘要 |
FIELD: oil and gas extraction, methods of limitation of stratum water inflow in borehole. SUBSTANCE: aim is to increase effectiveness of method by selective action on water saturated part of stratum with simultaneous increase of insulating material strength. To realize the aim method of limitation of water inflow in borehole provides for successive pumping in stratum of insulating solution based on water solution of polyacrylamide and its sewing agent based on water solution of polyvalent metal salt in stoichiometric amount in respect to reaction groups of insulating solution and also provides for preliminary introduction in based on polyacrylamide water solution insulating solution of magnetic active substance, alkaline metal carbonate and surface active substance and after insulating solution pumping in stratum - it provides for magnet lowering in borehole, bringing borehole into production to act on water saturated interval of stratum by permanent magnetic field till full removal from oil saturated interval of stratum of penetrated in it insulating solution and temporary borehole shut-in to introduce sewing agent. In the case insulating solution components are taken in following ratio, mass %: polyacrylamide - 0.60 - 0.90; magnetic active substance - 30.00 - 60.00; alkaline metal carbonate - 0.60 - 0.90; surface active substance - 0.02 - 0.05; polyvalent metal salt - 0.90 - 1.50; water - balance. Alumoammonium aluminum potassium sulfate is used as polyvalent metal salt. EFFECT: increased effectiveness of method. 1 tbl |
