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Patent
CA 1275303
WIRELINE WELL TEST APPARATUS AND METHOD ABSTRACT An improved technique for monitoring subterranean formation test data is provided utilizing an electric wireline to transmit data in real time from sensors positioned downhole in a test string to surface computing and readout equipment The electrical connection between the downhole sensor and the wireline is made by a current coupler technique which reliably allows for transmission of signals representative of downhole test parameters, with the transmitted signals being insensitive to the presence or conductivity of the well fluids. A transmit ter/receiver coupler half is carried in the well via conductor wireline on a latch tool for coupled electrical engagement with a mating receiver/transmitter coupler half contained in a down- hole landing recepticle. The latch tool may be electrically activated to mechanically latch and electronically or mechani cally activated to unlatch from the lanalng recepticle, so that a full bore passage is provided through the landing recepticle when the latch tool is not interconnectcd with the landing recepticle Two-way data transmission is possible, so that downhole instrumentation and equipment can be activated from the surface via control signals transmitted through the coupler device, and data from downhole sensors can be transmitted in real time to surface computing and recording equipment
560460
Green Robert R.
Ireland Kelly D.
Meador Richard A.
Baker Hughes Incorporated
Borden Ladner Gervais Llp
Green Robert R.
Ireland Kelly D.
Meador Richard A.
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