Method of preventing drill string overflow

Details Method of preventing drill string overflow Method of preventing drill string overflow

1985-03-28

1986-03-25

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

166317, 166373, E21B 700, E21B 1700

Patent

active

045777020

ABSTRACT:
A method of preventing drilling fluid overflow during the drilling of a well bore when the drill string suspended within the well bore is raised and drill pipe sections are removed therefrom such as when it is necessary to replace the drill bit. In accordance with the method, a tool joint is connected in the drill string near the bottom end thereof which includes at least one shear plug sealingly attached thereto which when sheared provides a drilling fluid flow passageway from the interior to the exterior of the tool joint. The shear plug in the tool joint is sheared whereby drilling fluid contained in the drill string is drained therethrough when the drill string is raised followed by the raising of the drill string and the removal of drill pipe sections therefrom.

REFERENCES:
patent: 2178845 (1939-11-01), Baker
patent: 2903074 (1959-09-01), Layton et al.
patent: 2922479 (1960-01-01), Kinley
patent: 2947363 (1960-08-01), Sackett et al.
patent: 3095040 (1963-06-01), Bramlett
patent: 3527297 (1970-09-01), Todd
patent: 3599713 (1971-08-01), Jenkins
patent: 3907046 (1975-09-01), Gaylord
patent: 3963077 (1976-06-01), Faulkner
patent: 4031957 (1977-06-01), Sanford
patent: 4176717 (1979-12-01), Hix
patent: 4260017 (1981-04-01), Nelson et al.
patent: 4300636 (1981-11-01), Lawrence
patent: 4351400 (1982-09-01), Faulkner
patent: 4394880 (1983-07-01), Faulkner
patent: 4406335 (1983-09-01), Koot
patent: 4427070 (1984-01-01), O'Brien
patent: 4460048 (1984-07-01), Smith et al.
patent: 4478244 (1984-10-01), Garrett

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