| 摘要 |
FIELD: development and operation of gas and gas-condensate deposits. SUBSTANCE: structure of the well includes casing string 3, tubings 6 and 7, drill sting-casing annulus 8, tubing-casing annulus 9, pipe space 10, packers 11 and 12, check controlled valve 13, pipe union 14, pipelines 15, gas treatment point 16, booster compression station 17, pressure lines 18-20, pipe unions 21-23. Embodiment of the method consists in that gas from gas bed 2 of the upper horizon through tubing-casing annulus 9 and pipe union 14 is supplied to gas treatment point, where it is separated into two flows one of which is supplied to pipeline 15 and the other, to booster compressor station 17, where it is compressed to the required pressure P2 and directed to bed 3 and supplied through pressure line 19, pipe unions 21 and 22 and drill string-casing annulus 8 to bed 3 and compressed to the required pressure P3 to supply to bed 4 and fed through pressure line 18, pipe union 23 to pipe space 10 and further on to bed 4. In this case, packers isolate drill string-casing annulus 8 and tubing-casing annulus 9 during well operation. Installed in packer 12 is controlled check valve 13 which at pressure P2 > P3 remains closed, that allows the well to be used, both, as producing and as injection wells, and at pressure of P3 > P2 check valve opens and well is operated as producing for two horizons. EFFECT: extended range of employment of producing wells, intensified gas recovery, maximum withdrawal of gas condensate and cut down expenditures for construction of wells. 3 cl, 1 dwg |
