Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1981-07-02
1983-05-17
Novosad, Stephen J.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166386, 166319, 166325, E21B 33126, E21B 3408
Patent
active
043835783
ABSTRACT:
Apparatus for use in injecting treatment solutions through the annulus between two concentric conduits, such as tubing and casing, and then circulating it upwards with produced hydrocarbons. The apparatus comprises an integral valve and seal, including a mandrel, a packoff valve and a casing bore receptacle. The mandrel is incorporated in the tubing, and the casing bore receptacle is incorporated in the casing. The packoff member is releasably carriable on the mandrel and comprises an integral check valve and a radially expandable latch which is cammed outward by the relatively movable mandrel. The annular packoff member has seals on the interior and exterior surfaces for providing sealing integrity between the mandrel and the casing bore receptacle. The integral check valve permits fluids injected from above to flow radially across the packoff member between longitudinally annular flow paths defined by the packoff member and the casing, and by the packoff member and the mandrel. Net pressure in the annulus below the packoff member urges the check valve to the closed position.
REFERENCES:
patent: 1683629 (1928-09-01), Robinson
patent: 3086593 (1963-04-01), Chitwood
patent: 3109490 (1963-11-01), Baker
patent: 3747682 (1973-07-01), Taylor
patent: 4290484 (1981-09-01), Beall et al.
Baker International Corporation
Bui Thuy
Norvell, Jr. William C.
Novosad Stephen J.
Pitts Robert W.
LandOfFree
Casing bore receptacle with fluid check valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Casing bore receptacle with fluid check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Casing bore receptacle with fluid check valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1563104