Wells – Packers or plugs – Cup type
Patent
1994-08-18
1996-06-04
Tsay, Frank S.
Wells
Packers or plugs
Cup type
166156, E21B 3316
Patent
active
055224580
ABSTRACT:
A high pressure well cementing plug assembly for use in a pipe during the cementing of the pipe in a well bore is provided by the present invention. The assembly basically comprises top and bottom cementing plugs which include high strength inner tubes for supporting high differential pressures exerted on the plugs. The bottom end of the inner tube of the bottom plug is adapted to supportingly engage a float shoe or the like upon landing. Also, the bottom end of the inner tube of the top plug and the top end of the inner tube of the bottom plug are adapted to supportingly engage each other when the top plug lands on the bottom plug. The high strength inner tubes support high pressure differentials exerted on the plugs and prevent the plugs from collapsing or otherwise being damaged.
REFERENCES:
patent: 3437137 (1969-04-01), Scott
patent: 3545542 (1970-12-01), Scott
patent: 3796260 (1974-03-01), Bradley
patent: 4078810 (1978-03-01), Arendt
patent: 4083074 (1978-04-01), Curtis
patent: 4190112 (1980-02-01), Davis
patent: 4356865 (1982-11-01), Appel et al.
patent: 4624312 (1986-11-01), McMullin
patent: 4809776 (1989-03-01), Bradley
patent: 4836279 (1989-06-01), Freeman
patent: 4858687 (1989-08-01), Watson et al.
patent: 5018579 (1991-05-01), Braddick et al.
patent: 5052488 (1991-10-01), Fraser, III
patent: 5095980 (1992-03-01), Watson
Brisco David P.
Watson Brock W.
Christian Stephen R.
Dougherty, Jr. C. Clark
Halliburton Company
Roddy Craig W.
Tsay Frank S.
LandOfFree
High pressure cementing plug assemblies does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High pressure cementing plug assemblies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High pressure cementing plug assemblies will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-377842