FIELD: oil and gas industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like.
SUBSTANCE: method involves temporarily isolating productive bed within low filtration resistance interval by cement bridge forming along with cement forcing in productive formation, wherein cement volume is determined from productive formation thickness, lengths of perforation holes in productive formation and width of cracks created by hydraulic fracturing operation; eliminating water influx from water-bearing seam of underlaying productive formation; perforating impermeable layer, which separates water-bearing seam and productive formation; injecting cement mortar with expansion agent through perforation orifices formed in the layer; drilling cement bridge and creating low filtration resistance channels between productive formation and well by performing repeated productive formation perforation.
EFFECT: increased efficiency and quality.
1 dwg
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