FIELD: oil/gas production. SUBSTANCE: gaseous agent (gas or air) is pumped in production tubing or drill string-borehole annulus depending on the technology adopted. The agent forces back the fluid being in well shaft and well bottom zone, and is joined to seam gas at the expense of higher filterability. Then blocking solution is pumped in the seam, for instance, reverse emulsion for recovering foam circulation. After pumping in the blocking solution, froth generating solution with gaseous agent, for instance gas or air, are pumped in the well. EFFECT: exploitation of wells with low pressure. 2 cl
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Authors
Dates
1997-01-20—Published
1994-05-30—Filed