Multiple liner method for borehole access

United States of America Patent

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Feb 22, 2000
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N/A
app pub date
Jun 15, 1998
filing date
Jun 15, 1998

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Abstract

A method is provided for supporting and sealing structure defining a generally cylindrical hole while introducing and removing devices from the hole. A first flexible liner is installed in the hole and pressurized to a pressure effective to support and seal the structure. A second flexible liner is everted between the first flexible liner and the structure, where the second flexible liner carries the devices to introduce and remove the devices from the hole while the first liner remain pressurized to continuously support and seal the structure.

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Patent Owner(s)

Patent Owner	Address
KELLER CARL E	Not Provided

International Classification(s)

E21B:EARTH OR ROCK DRILLING

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Keller, Carl E	P.O. Box 9827, Santa Fe, NM 87504	31	685
# of filed Patents : 31 Total Citations : 685

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33 Citation Count
E21B Class

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Multiple liner method for borehole access

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09098025

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