FIELD: oil and gas well building, particularly well cementing.
SUBSTANCE: method involves serially injecting cleaning buffer solution, highly-viscous grouting mortar and cementing grouting mortar. The cleaning buffer solution is solution based on buffer powder taken in amount of 6 m3. The highly-viscous grouting mortar is thickened batch of highly-viscous grouting mortar with 1.92 g/cm3 density taken in amount of 4 m3. Cementing grouting mortar is light-weight grouting mortar of 42 m3 and cement grout taken in amount of 10 m3.
EFFECT: increased efficiency of drilling mud substituting for cement grout, increased quality of formed stone and maintenance of productive formation permeability.
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| PROCESS OF ISOLATION OF ABSORBING AND WATER-SATURATED STRATA | 1990 |
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| METHOD FOR CEMENTATION OF WELLS | 1996 |
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