FIELD: oil and gas industry.
SUBSTANCE: method of plugging of cement matrix porosity in well includes pumping of cement grouting with wax to the well, glass transition point is below 150°C, also it includes cement setting in the well, cement heating to temperature higher than that of wax glass transition point and cement cooling for wax to harden. For cement heating injection of water vapour to the well may be used. Used wax is an emulsion of polyethylene wax, emulsion of polypropylene wax, emulsion of carnauba wax or emulsion of lamellar wax.
EFFECT: improving operating performance of cement by permeability.
5 cl, 3 dwg, 1 tbl
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