METHOD OF GAS WELL CONSERVATION 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 wells under condition of abnormally low bed pressure (ALBP). According to the method of gas well conservation under condition of abnormally low bed pressure a bore hole of well is filled via a production tree, gates of the production tree are closed, and the well is conditioned under pressure; as fluid methanol water is used; volume of methanol water is determined from expression: V_l=π·D² _in*(h₁+h₂)/4, where V_l is volume of mixture of methanol water, 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: eliminating contamination of the producing bed and facilitating gas inflow from the producing bed after completion of well conservation period.

1 ex, 1 dwg