FIELD: oil and gas industry.
SUBSTANCE: casting method of cementing consists in gasified cement injection in casing pipe, two-stage squeezing into hole clearance considering gasified cement degassing while it is activated in borehole cavity, as well as considering gasified cement compressibility in thermobaric borehole environment. Improved gasified cement-bond in borehole is ensured by defect breakdown at the first stage of structure formation (activation) of gasified cement suspension owing to staged squeezing of gasified cement considering its stability.
EFFECT: improved gasified cement-bond in borehole.
3 dwg
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