RU2005135364A - METHOD FOR ELIMINATING A GAS WELL WITH INTER-COLUMNED GAS MANAGEMENT - Google Patents

Claims (1)

A method of eliminating a gas well with annular gas manifests, including killing the well, extracting the lift string, installing a cement bridge over the reservoir, making perforations in the production string, pumping grout through the annulus, installing the cement bridge in the shoe of the conductor, filling the wellbore in the interval of permafrost rocks of non-freezing fluid, dismantling at the mouth of the fountain reinforcement and column head, installation at the mouth of concrete mbas, characterized in that a lightweight sealing composition is pumped and pressed into the annular space under a pressure of 0.7-0.8 pressures of the test casing and cement bridge, and after it hardens in the annular space, the perforation interval is additionally closed by expanding cement mortar, providing high flowability, while as a lightweight sealing composition using a composition comprising Portland cement, epoxy polyurethane polymer PU-01-B, aluminosilicate microspheres, polyvinyl chloride, latex, trimetilhlorsiloksan TMHS and hardener in the following ratio, wt.%: Portland cement 15.0-16.0 Epoxy polyurethane polymer EPU-01-B 45.0-47.0 Aluminosilicate Microspheres 1.2-2.7 Polyvinyl chloride (filler) 18.0-18.5 Latex 13.5-13.8 Trimethylchlorosiloxane TMHS 0.1 Hardener 5.4-5.5 and as an expanding cement mortar, a composition is used, including grouting porland cement, aluminosilicate hollow microspheres, hydrocarbon aluminate additive, gypsum, plasticizer, water or calcium chloride in the following ratio of components, wt.%: Grouting Portland cement 85-90; Aluminosilicate Hollow Microspheres 10-15; Hydrocarboaluminate additive 2-4; Gypsum 2-4; Plasticizer 0.2; Water or 4% calcium chloride solution rest