Apparatus and method for the mechanical sequential release of ce

Details Apparatus and method for the mechanical sequential release of ce Apparatus and method for the mechanical sequential release of ce

1980-03-21

1982-08-24

Leppink, James A.

Wells

Processes

Cementing, plugging or consolidating

166155, E21B 3316

Patent

active

043456510

ABSTRACT:
An apparatus and method are provided for holding and selectively mechanically releasing at least one plug device utilized in cementing a subterranean well, preferably a subsea well. The apparatus is securable and carryable on a manipulatable conduit, such as a drill string, communicating with the well. The apparatus comprises a cylindrical housing control head means positioned within the housing, shiftable in response to manipulation of the conduit from closed position, whereby the plug device is prevented from passing through the control head means, to open position, whereby the plug device is permitted to pass through the control head means. Means are provided for transferring at least one of longitudinal and rotational manipulation of the conduit to the control head means to selectively shift the control head means between closed and open positions. Subsequent to shifting of the control head means to open position, the plug device may be pumped through the control head means. When plural plugs are desired, companion plural control head means are selectively and sequentially manipulatable to open position.

REFERENCES:
patent: 2737244 (1956-03-01), Backer et al.
patent: 2810441 (1957-10-01), Baker
patent: 3010514 (1961-11-01), Fox
patent: 3130783 (1964-04-01), Orr
patent: 3151839 (1964-10-01), Mott
patent: 3386701 (1968-06-01), Potts
patent: 3507325 (1970-04-01), Scott
patent: 3616850 (1971-11-01), Scott

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