FIELD: gas and oil production.
SUBSTANCE: ecologically pure not hardening pill is used for tamping annular space of casing string. Spherical cavities uniformly distributed by volume are arranged in the pill. Also, mechanical matrixes are tempered in a not yet hardened pill. Matrixes consist of an internal part with closed porosity and an external part with open porosity at ratio of corresponding volumes of parts within range from 90:10 to 99:1. Application of non-hardening pill instead of not freezing one prevents drinkable water bearing horizons from hydrocarbon impurities.
EFFECT: application of matrix of cheap foam glass in non-hardening pill instead of use of expensive refrigerating installations, thermostats and double casings in surface equipment and in structure of direction and conductor of hole.
3 cl
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