DEVICE TO CLEAN OUT FORMATIONS IN WELL Russian patent published in 2003 - IPC

Abstract RU 2201496 C2

FIELD: oil production. SUBSTANCE: device can be used to clean bottom hole and area near it from sand, paraffin, resin, slurry and other sediments difficult to remove by washover. Device includes body linked to supporting member. Rod with radial conduits is installed in body. Fixing bushing with longitudinal groove located opposite to longitudinal groove in rod and annular groove in body is positioned inside rod. Rod is joined to body by means of balls-locks. Fixing bushing is shut off by mobile blank plug. Supporting member is mounted for longitudinal movement and subsequent fixing. Body is fitted with shearing funnel to interact with hollow plugs put on casing string. Flexible packer seal is placed between conical heads of body and rod. Device demonstrates rigidity, high serviceability and reliability. EFFECT: enhanced cleaning efficiency an expanded functional potential. 3 cl, 3 dwg

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RU 2 201 496 C2

Authors

Gabdullin R.G.

Strakhov D.V.

Ishkaev R.K.

Khusainov V.M.

Khaminov N.I.

Dates

2003-03-27—Published

2001-05-21—Filed