Expro North Sea Limited

John Henry McKay

David Sirda Shanks

A downhole instrument system for permitting continued operation a downhole instrument after one or more failure modes is provided. The downhole instrument system includes an electrical power supply in electrical communication with the downhole instrument via an electrical power connection comprising one or more lengths of electrical cable and one or more electrical cable terminations; a load monitor configured to monitor a load on the electrical power supply, wherein the monitored load is dependent on one or more failure modes related to the electrical power connection; and a power controller configured to control the electrical power supplied to the downhole instrument based on the monitored load.

Power and telemetry systems for a downhole instrument

A well bore instrument system is provided. The well bore instrument system includes a cable for conveying control signals and data signals; sensors positioned along the cable; and a controller operable to send control signals to the sensors and receive sensor data signals from the sensors via the cable. The controller is configured to transmit the control signals to the sensors at a control signal bit rate, wherein a sensor of the sensors is configured to receive the control signals and transmit sensor data signals to the controller at a sensor data bit rate, and wherein the sensor data bit rate is greater than the control signal bit rate.

Well bore instrument system

A connector is described, including a housing including an internal volume, a port in the housing for receiving a conduit and providing access to the internal volume, a sealing arrangement for sealing the internal volume in the housing and a seal integrity test system including a sensor coupled to the housing. The seal integrity test system is configured to provide a measurement based on the pressure inside the internal volume of the housing to establish the integrity of the sealing arrangement.

Pressure seal with built in testing system

A well bore fluid sensor is provided that includes an inner plate, a plurality of outer plates, first and second cable fixtures, and an electronics module. The inner plate defines a sensor interior cavity. The outer plates include a first outer plate and a second outer plate. The electronics module includes a resonant circuit and a power supply and is in signal communication with the inner plate and at least one of the first and second cable fixtures. The inner plate, the first and second outer plates, and the first and second cable fixtures are coupled together to form a unitary structure. The inner plate is electrically insulated from the first and second outer plates, the first and second cable fixtures. The first and second outer plates are electrically insulated from one another. The inner plate is capacitively coupled to the first and second outer plates.

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Stonehaven, United Kingdom

John Henry McKay