PACKER ASSEMBLY Russian patent published in 2013 - IPC E21B33/12 

FIELD: oil and gas industry.

SUBSTANCE: packer assembly comprises a positive locator, an anchor, a hydraulic jack, aeration and return valves and a packer. The positive locator is arranged in front of the anchor at no more than 0.7 m. An additional positive locator follows the positive locator in front of the packer at no more than 0.7 m. The positive locator distance is no more than 3 m. The positive locators have centring sleeves with an outer size 9-11 mm more than an outer size of the anchor and 10-16 mm less than an internal diameter of a well.

EFFECT: fixation of the packer assembly in a horizontal well bore.

1 dwg