FIELD: oil and gas industry.
SUBSTANCE: installation includes main and auxiliary drives, a packer set between the top and bottom producing formations, the main well interconnected with over-packer space of and auxiliary well interconnected with below-packer space, tubing strings with sucker-rod pumps fixed at the well mouth with dual string fittings, parallel anchor set at both tubing strings and designed to be fixed in regard to each other. At that recovery of product from the below producing formation is carried out by a tubing pump with an opening in the middle of cylinder and plunger, which length is less than length of the cylinder half.
EFFECT: more reliable operation of the installation.
2 dwg
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