FIELD: oil and gas industry.
SUBSTANCE: invention is related to gas industry and it can be used during remedial cementing of gas and gas condensate wells in operation process in order to compact and recover gas permeability of cementing and namely cement sheath. Carbon dioxide is used as a reagent in the method of cementing compaction for gas wells that includes treatment of cement stone by reagent pumping to annular space thus forming insoluble or hardly soluble residue at interaction with calcium hydroxide of cement stone with further creation of supplementary pressure; at that treatment of cement stone is implemented at gas intake capacity from 0.1·10-3 up to 6.7·10-3 m3 /(h·MPa) and zero water intake.
EFFECT: ensuring gas permeability for tubing-casing annulus with non-availability of water intake.
1 tbl
| Title | Year | Author | Number |
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