FIELD: oil and gas industry.
SUBSTANCE: water-based composite for temporary blocking of a productive formation comprises carboxymethyl cellulose, calcium chloride, dibasic ammonium phosphate, Morpen and water, as well it contains additionally potassium chloride and zinc stearate with the following ratio of ingredients, wt %: carboxymethyl cellulose 0.5-3.0, calcium chloride 3-12, dibasic ammonium phosphate 5-15, Morpen 0.05-1.00, potassium chloride 0.1-1.0, zinc stearate 0.1-5.0, water - up to the remaining weight.
EFFECT: improved efficiency of temporary blocking, maintenance of the productive formation permeability and porosity, improved workability of the blocking process due to the usage of the composite with perfected thixotropic properties promoting smooth cross-bonding in the process of the composite making and creation of high hydraulic resistance at blocking that prevent deep penetration of the blocking composite liquid phase to the formation.
1 dwg, 5 ex
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