FIELD: oil and gas industry.
SUBSTANCE: object of present invention is to improve cement compositions for wells applicable for various implementations at cementing in underground formations, particularly at cementing of underground zones with temperature approximately 65°F or below. The method of cementing according to the present invention consists in preparing a cement composition basically containing hydraulic cement and amount of iron salt chosen from group of iron chloride (II) or its mixture with iron chloride (III) effective for decrease of composition hardening time and amount of water sufficient for creating a suspension; in introducing it in the underground zone or in a guiding case tube and in hardening of suspension into non-permeable mass.
EFFECT: decreased time for cement hardening.
30 cl, 2 tbl
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