Apparatus and method for tapping and extracting oil samples from

Details Apparatus and method for tapping and extracting oil samples from Apparatus and method for tapping and extracting oil samples from

1980-07-30

1982-09-21

Swisher, S. Clement

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

137318, G01N 110

Patent

active

043500528

ABSTRACT:
Apparatus and method for tapping and extracting an oil sample from a high pressure oil filled pipe-type transmission cable system. The system voltage is very high. Pipe drilling must be carefully controlled to preclude oil and oil pressure release, and to prevent cable conductor contact by the drill. Valve means are attachable to a pipe to be tapped. A fitting having passageway means is attached to the valve. A drill bit extends through the fitting and valve, when in an open position, and is operable to drill a hole through the pipe wall. Sealing means in the fitting are in operative engagement with the drill bit shank and prevent oil and pressure release. Stop means are adjustably positioned on the drill bit shank and are operable to control drilling depth of the drill solely to the pipe wall thickness, and subsequent to drilling to prevent retraction of the drill bit a distance such as to inactivate the sealing means, but to permit valve closure and a subsequent oil sample removal while retaining integrity of the system.

REFERENCES:
patent: 3229711 (1966-01-01), Leopold, Jr. et al.
patent: 3412613 (1968-11-01), Brown et al.
patent: 4046013 (1977-09-01), Green

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