Method and appparatus for reduction of well assembly time

Details Method and appparatus for reduction of well assembly time Method and appparatus for reduction of well assembly time

1987-03-26

1988-09-13

Novosad, Stephen J.

Wells

Processes

Assembling well part

166 89, 166380, 166382, E21B 1700, E21B 1900

Patent

active

047702494

ABSTRACT:
A method and apparatus are disclosed for use in reduction of well assembly time. A dual hanger casing head is supported by a previously driven drive pipe at the desired surface location of the well. A diverter assembly is connected to the upper end of the dual hanger casing head. Both a large diameter casing assembly and a small diameter casing assembly are installed downwardly through the diverter assembly and supported within the dual hanger casing head, prior to disconnection and removal of the diverter assembly from the top of the dual hanger casing head. Removal of the diverter assembly only after the installation of both casing assemblies significantly reduces the well assembly time, and reduces the risk to the equipment and personnel associated with the well assembly process.

REFERENCES:
patent: 1849374 (1932-03-01), McEvoy, Jr. et al.
patent: 2034698 (1936-03-01), Hild
patent: 2118094 (1938-05-01), McDonough et al.
patent: 3190354 (1965-06-01), Stone
patent: 3336978 (1967-08-01), Hynes
patent: 3391735 (1968-07-01), Schramm et al.
patent: 3744562 (1973-07-01), Priebe et al.

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