Apparatus and method for protecting well bore

Details Apparatus and method for protecting well bore Apparatus and method for protecting well bore

1977-03-18

1978-08-29

Leppink, James A.

Wells

Valves, closures or changeable restrictors

166 85, 166217, E21B 2300, E21B 2304

Patent

active

041097289

ABSTRACT:
A tool for running in and/or retrieving a bore protector, the tool comprising first and second assemblies longitudinally slidably connected to each other. Latches are mounted on the first assembly for lateral extension and retraction with respect thereto. The latches are also cooperatively connected to the second assembly for laterally inward movement of the latches upon longitudinal movement of the second assembly relative to the first assembly in a first direction, and for laterally outward movement of the latches upon longitudinal movement of the second assembly relative to the first assembly in a second direction opposite the first direction. Means are provided for selectively moving the second assembly in the first direction, and the latches are yieldably biased laterally outwardly. The invention further includes a bore protector adapted for use with the tool by the provision of the internal latch engagement formations. A method of protecting a bore with the bore protector and tool is also disclosed.

REFERENCES:
patent: 3225833 (1965-12-01), Parkhurst et al.
patent: 3240511 (1966-03-01), Bishop et al.
patent: 3254723 (1966-06-01), Schramm
patent: 3350130 (1967-10-01), Ahlstone et al.
patent: 3473607 (1969-10-01), Castille
patent: 3473608 (1969-10-01), Castille
patent: 3645328 (1972-02-01), Greene, Jr.
patent: 4023620 (1977-05-01), Gazda et al.

Affiliated with

Also associated with

Rating

Apparatus and method for protecting well bore does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for protecting well bore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for protecting well bore will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1627457