Continuous circulation drilling method

Details Continuous circulation drilling method Continuous circulation drilling method

2008-01-29

2008-01-29

Tsay, Frank (Department: 3672)

Wells

Processes

Assembling well part

C166S081100, C175S218000

Reexamination Certificate

active

10780796

ABSTRACT:
A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for the mud etc. and which incorporates rams to seal off and separate the flow of mud as a tubular is added or removed.

REFERENCES:
patent: 2245960 (1941-06-01), Guy
patent: 3559739 (1971-02-01), Hutchison
patent: 4315553 (1982-02-01), Stallings
patent: 6119772 (2000-09-01), Pruet

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