Tubing injector

Details Tubing injector Tubing injector

2006-07-11

2006-07-11

Thompson, Kenneth (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S077200, C254S02900A, C226S176000, C226S189000

Reexamination Certificate

active

07073602

ABSTRACT:
Apparatus for injecting coiled tubing into a bore comprises a rotatable housing (28, 29) having an axis along which coiled tubing is to be translated. A set of rolling elements (12, 14) is rotatably mounted in the housing (28, 29), each rolling element (24) having a skewed axis of rotation with respect to the housing axis and being arranged for rolling contact with an outside diameter of the coiled tubing. The arrangement is such that rotation of the housing (28, 29) relative to the tubing causes the tubing to be moved axially through the rotating housing.

REFERENCES:
patent: 3424012 (1969-01-01), Hirmann
patent: 3475972 (1969-11-01), Steibel
patent: 3684152 (1972-08-01), Boden
patent: 3746232 (1973-07-01), Kirillov et al.
patent: 5975203 (1999-11-01), Payne et al.
patent: 6202764 (2001-03-01), Ables et al.
patent: 0 585 779 (1994-03-01), None
PCT International Search Report from International Application No. PCT/GB01/03257, Dated Nov. 19, 2001.
PCT International Preliminary Examination Report from International Application No. PCT/GB01/03257, Dated Sep. 5, 2002.

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