Cable connection head for a well logging cable useful at high te

Details Cable connection head for a well logging cable useful at high te Cable connection head for a well logging cable useful at high te

1986-08-04

1988-02-16

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

Using electrode arrays, circuits, structure, or supports

73152, 166 651, 174 75R, 174 76, G01V 318, E21B 4900, H02G 1508

Patent

active

047257830

ABSTRACT:
A cable connection head is disclosed, in which a well logging cable is inserted through an upper head housing of a head housing consisting of a lower head housing coupled to an upper portion of a measuring instrument housing and the upper head housing coupled to an upper portion of the lower head housing, armoring wires of the well logging cable secured to the upper head housing, and core wires of the well logging cable are connected to a connector which is fittedly secured to the lower head housing. A metal covered cable of the well logging cable is constructed by accommodating a plurality of core wires and filling with an electric insulating material in a metal tube. The lower head housing and metal covered cable are reliably sealed to each other such as to be able to withstand high temperature by inserting the metal tube of the metal covered cable through the lower head housing and securing the metal tube by means of welding around the entire outer periphery to the top of the lower head housing. An end portion of the metal tube extends into a recess of the lower head housing. The recess is filled with a ceramic material covering the accommodated end portion of the metal tube with the electric insulating material.

REFERENCES:
patent: 2562880 (1951-08-01), Andrew
patent: 2779915 (1957-01-01), Moon
patent: 3047795 (1962-07-01), Pearson
patent: 3233202 (1966-02-01), Kyle
patent: 3573346 (1971-04-01), Appleby
patent: 3816641 (1974-06-01), Iversen
patent: 4096752 (1978-06-01), Tonnelli

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