| 摘要 |
FIELD: gas producing industry; applicable in increasing the production rates of gas and gas-condensate wells with chemical treatment of bottom-hole formation zone. SUBSTANCE: method for stimulation of well by variable pressure values includes well temporary shut-in for a time depending on the rate of pressure recovery at the wellhead, then, putting it into operation by tubing string with lowered pressure at wellhead down to the calculated value governed by preservation of the required parameters of formation and next shut-in with repetition of the cycle. Distinguishing feature of the well operation consists in that a portion of fluid is injected into bottom-hole formation zone of gas or gas-condensate well after its shut-in during the time interval needed for recovery of the pressure under the conditions to prevent the full shutdown of the well. Then, periodically, upon attaining the calculated pressure, gas is bled alternately from pipe space and drill-sting-borehole annulus, beginning from the latter upto appearance of fluid in gas flow or up to establishment of atmospheric pressure. Then well is shut-in, and, if required, injection of fluid and cycles of gas discharge are repeated. EFFECT: higher efficiency. |
