METHOD OF CONSERVATION OF GAS AND GAS CONDENSATE WELLS WITH HIGH PENETRABILITY OF PRODUCING BED UNDER CONDITIONS OF ABNORMALLY LOW BED PRESSURE Russian patent published in 2009 - IPC E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry, particularly to conservation of gas and gas condensate wells with high penetrability of producing bed under conditions of abnormally low bed pressure. The method of conservation of gas and gas condensate wells with high penetrability of the producing bed under conditions of abnormally low bed pressure consists in filling a borehole of the well with fluid through a production tree, in closing a gate of the production tree and in conditioning the well under pressure; also, methanol water is used as fluid; fluid additionally contains alumina-silicate micro-spheres at equal density of water and micro-spheres; volume of mixture of the said methanol water and alumina-silicate micro-spheres is determined from expression V_l=π·D² _in*(h₁+h₂)/4, where V_l is volume of mixture of methanol water with alumina-silicate micro-spheres, m³, D_in - is internal diametre of the flow string, m, h₁ is interval of perforated openings, m, h₂ - is depth of a bottomhole, m.

EFFECT: elimination of contamination of producing bed due to blocking producing bed, preventing pumped into well fluid penetration into producing bed, and facilitating withdrawal of gas flow from producing bed after completion of well conservation.

1 ex, 1 dwg