Wells – With electrical means
Patent
1983-11-04
1985-09-17
Novosad, Stephen J.
Wells
With electrical means
166 66, 340856, 367 82, G01V 140
Patent
active
045414815
ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a full bore drill stem testing system includes a tubular housing suspended in a well on a pipe string and having an open bore therethrough. An annular electrical contact sleeve is mounted on the wall of the housing surrounding the bore. A running tool that is lowered into the pipe string on electrical wireline includes inner and outer body members, with the outer body member carrying latch dogs that engage a shoulder in the housing to stop downward movement in a predetermined position. The inner body member carries a normally retracted annular elastomer element that has an electrical contact means on its outer periphery, and expander means responsive to upward movement of said inner body member relative to said outer body member is operable to expand the elastomer element to cause the contact means to engage the contact sleeve and enable drill stem test data to be transmitted to the surface via the electric wireline.
REFERENCES:
patent: 2380520 (1945-07-01), Hassler
patent: 3805606 (1974-04-01), Stelzer et al.
patent: 3876972 (1975-04-01), Garrett
patent: 4051456 (1977-09-01), Heilhecker et al.
Neuder William P.
Novosad Stephen J.
Schlumberger Technology Corporation
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