Boring or penetrating the earth – With heating or cooling drilling fluid
Patent
1996-04-23
1998-02-10
Neuder, William P.
Boring or penetrating the earth
With heating or cooling drilling fluid
166 57, E21B 2100
Patent
active
057158959
ABSTRACT:
A dual walled pipe string structure defines an annular cavity between the walls into which hard granules may be packed to oppose wall collapse when inserted to high pressure well depths. Segments of pipe thus constructed will reduce the heat transfer across the pipe string allowing for the conveyance of drilling mud from a surface cooler to a downhole tool. The rate of cooled drilling mud transfer to the tool may be controlled to match the heat transfer rates and the heat generated at the tool. To further oppose wall pressures inert gas at opposing pressure may be introduced into the interstices between the granules.
REFERENCES:
patent: 2621022 (1952-12-01), Bardill
patent: 3679929 (1972-07-01), Holm et al.
patent: 3774701 (1973-11-01), Weaver
patent: 3820605 (1974-06-01), Barber
patent: 4215753 (1980-08-01), Champness
patent: 4220202 (1980-09-01), Aladiev
patent: 4276936 (1981-07-01), McKinzie
patent: 4312401 (1982-01-01), Zebuhr
patent: 4693313 (1987-09-01), Stephenson
patent: 4926949 (1990-05-01), Forrest
patent: 5016716 (1991-05-01), Donovan
patent: 5265677 (1993-11-01), Schultz
Koji Morita and Makoto Tago, Development of the Downhole Coaxial Heat Exchanger (DCHE) System: Potential for Fully Utilizing Geotheremal Resources, GRC Bulletin, Mar. 1995, pp. 83-92.
Champness Al T.
Champness Elwood
Hovet Kenneth J.
Neuder William P.
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