| 摘要 |
Method for ejection of liquid from pit-face of gas and gas-condensate well relates to oil-and-gas producing industry. The method includes injection to annular space of solution of surface-active substance (SAS) that is pressed to critical area of formation with hydrocarbon gas at high pressure, with mixing stratal liquid that is at bottom of wall with solution of SAS, this is performed with change of direction of injection hydrocarbon gas under high pressure to pipe and annular spaces. After 2-4 cycles of injection with alternation annular space is closed and part of stratal liquid with SAS solution is pressed to bed, and following injection with alternation hydrocarbon gas at high pressure to pipe and annular spaces is performed after soaking stratal liquid pressed into strata with SAS solution during time from 2 to 6 hours. Effective mixing of SAS solution with stratal liquid that is at bottom zone of well is provided, its ejection to surface under condition of low rates of gas motion, with blocking watered interlayers in productive well column and prolongation of effect of ejection of liquid from the bottom zone after implementation of the process described. |
