Means and method for protecting apparatus situated in a borehole

Details Means and method for protecting apparatus situated in a borehole Means and method for protecting apparatus situated in a borehole

1981-01-29

1983-08-16

Purser, Ernest R.

Wells

With heating, refrigerating or heat insulating means

166248, 166302, 166 65R, E21B 3604

Patent

active

043985971

ABSTRACT:
Apparatus situated in a borehole traversing an earth formation is protected from closure of the borehole by being encased in an inflatable device. Surface equipment inflates and maintains the inflatable device at a sufficient pressure so as to prevent the earth formation from closing in and contacting the apparatus.

REFERENCES:
patent: 385600 (1888-07-01), Durbrow
patent: 2629446 (1953-02-01), Freling et al.
patent: 2681706 (1954-06-01), Pottorf
patent: 2696258 (1954-12-01), Greene
patent: 2935615 (1960-05-01), True
patent: 3982591 (1976-09-01), Hamrick et al.
patent: 4125289 (1978-11-01), Huff et al.
patent: 4196329 (1980-04-01), Rowland et al.
patent: 4301865 (1981-11-01), Kasevich et al.

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