SHARIFOV'S PACKER SYSTEM (VERSIONS) Russian patent published in 2009 - IPC E21B33/12 

FIELD: oil and gas production.

SUBSTANCE: group of inventions is related to oil and gas production industry, in particular, to packer systems used to separate annular and tubular spaces of well. Packer system comprising hydraulic packer and anchor, for well with conventional external diametre of shaft of 140-146 mm. Packer comprises shaft, adjusting nut, sealing ferrules, which are installed either on nozzle or shaft, shear screws, hydraulic cylinder-piston, anchoring device of hydraulic action. The latter comprises cone with plates and plate holder, is arranged with the possibility of rest against shaft collar, and is connected to shaft by shear screws. Packer shaft is connected to anchor by upper tube thread. In order to provide for throughput diametre of small packer system within the limits from 55 to 62 mm, provided that dangerous section along shaft body is maintained as at least 7 cm, packer shaft is made, depending on its selected throughput diametre, either with upper and lower combined tubular threads - drilling with end H 60 extended outside and tubing stings 73, smooth or extended, or with upper and lower identical tubular threads - drilling with end H 60 extended outside, or with upper and lower identical tubular threads - tubing strings 73, smooth or extended.

EFFECT: provides for relative high throughput diametre of packer for well with shaft diametre of 140-146 mm, and also improved reliability and efficiency of simultaneous-split operation for producing injection and piezometric wells.

2 cl, 3 ex, 9 dwg