DEVICE FOR FLUID INJECTION IN BOTTOM FORMATION AND OIL EXTRACTIONS FROM UPPER FORMATION Russian patent published in 2008 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to engineering and technology of simultaneous bleeding of production from one formation and fluid injection in other formation of a hole. It provides simplification of installation, efficiency upgrading of pump operation and expansion of functionality. Essence of invention: device contains a pipe string with the packer installed between pointed formations. The pipe string above the upper petroliferous formation is furnished by a complementary packer, and between a packer and a complementary packer - an internal pressure-tight baffle plate above which the ram pump as a part of a pipe string is installed consisting of the cylinder piston with end-to-end longitudinal channels and the flap, thus the cylinder piston is rigidly connected with a rod string. The internal room of a pipe string between the pump and a baffle plate is connected with the upper petroliferous formation by means of the radial opening executed in the body of a complementary packer and a pipe string. And the internal room of a pipe string above a ram pump is connected with a hole discharge line. The annulus room of a pipe string above a complementary packer is connected with the bottom formation by means of a ring channel executed between a pipe string and a complementary packer, and also the radial opening executed in a pipe string below a baffle plate and internal room of a pipe string below a baffle plate and through holes, executed in the packer body. The packer and a complementary packer are executed in the form of the self-sealing packings which are fluid impermeable to the upper formation during device operation process.

EFFECT: device simplification of products bleeding from one formation and fluid injection in other formation of a hole and efficiency upgrading of its operation and expansion of functionality.

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