CIRCULAR SELF-PACKING UNIT (VERSIONS), DEVICE FOR COMPLETION OF WELL WITH UNDER-WATER WELLHEAD AND PROCEDURE FOR FABRICATION OF CIRCULAR PACKING Russian patent published in 2011 - IPC E21B33/43 F16J15/46 

Abstract RU 2436931 C1

FIELD: gas and oil production.

SUBSTANCE: circular self-packing unit is used for packing between two circular surfaces. The packing unit consists of a circular base equipped with packing surface. The packing unit also includes a pair of spaced collars diverging in opposite directions from the circular base and located opposite packing surface of the base; collars also have packing surfaces. The base is elastically deformed. The collars are also elastically deformed relative to the base thus performing self-packing between two circular surfaces.

EFFECT: elastic-deformed packing unit facilitates tight packing surfaces adjoining and sufficient contact pressure on packing surfaces maintaining packing under any conditions.

30 cl, 9 dwg

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RU 2 436 931 C1

Authors

Berton Dzhejms A.

Garbitt Kit

Ziis Devid Kh.

Kokurek Kristofer G.

Shinn Terri L.

Dates

2011-12-20Published

2008-11-05Filed