Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent
1996-05-02
1997-09-02
Bagnell, David J.
Wells
Submerged well
Connection or disconnection of submerged members remotely...
166 891, 166382, 175207, 405128, E21B 4104
Patent
active
056621698
ABSTRACT:
A wellhead system has features which allow the injection of drilling cuttings in an annulus between first and second strings of casing. A wellhead assembly has an outer wellhead housing connected to a string of conductor pipe. An outer port is located in the sidewall of an extension member located below the outer wellhead housing. An inner wellhead housing lands in the outer wellhead housing. An inner port is located in an extension member below the inner wellhead housing. An internal landing shoulder is located within the conductor pipe. An external landing shoulder is located on a swivel connector joint mounted on the upper end of a first string of casing. The connector joint is secured to the inner wellhead housing extension member. Once landed, the landing shoulder on the connecting joint supports the weight of casing, allowing the inner wellhead housing to be rotated to orient the inner port with the outer port. The inner wellhead housing then may be moved downward a short distance to lock it into engagement with the outer wellhead housing.
REFERENCES:
patent: 4942929 (1990-07-01), Malachosky
patent: 5085277 (1992-02-01), Hopper
patent: 5109933 (1992-05-01), Jackson
patent: 5129469 (1992-07-01), Jackson
patent: 5339912 (1994-08-01), Hosie
One page of drawing entitled "Drill-Quip Wellhead Drawing" (undated).
One page article, entitled, "Conductor Connectors" (undated).
ABB Vetco Gray Inc.
Bagnell David J.
Bradley James E.
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