Base gauge and multiple remote sensors
AssigneeSchlumberger Technology Corporation
InventorsAbdul Halim Elsaadi, Adarshkumar Gouda, Teik Eng Ewe, Linghuan Li
Life of this patent
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Abstract
A system for monitoring one or more downhole parameters. The system includes a downhole base gauge configured to receive power from a surface power drive and to communicate data with a surface computing device and a plurality of downhole remote sensors coupled to the base gauge in series and configured to generate data indicative of one or more observable parameters. The base gauge is further configured to query one of the remote sensors and, in response to such a query, the remote sensor is configured to transmit data indicative of the observable parameter associated with that sensor to the base gauge.
Claims20
A system for monitoring one or more downhole parameters, comprising:
- a downhole base gauge configured to receive power from a surface power drive via a cable of a downhole electric motor and to communicate data with a surface computing device;
- and
- a plurality of downhole remote sensors coupled in series along a common line electrically coupled to the downhole base gauge wherein each of the downhole remote sensors is electrically powered by the downhole base gauge via the common line and individually configured to generate data indicative of at least one of one or more observable parameters;
- wherein the base gauge is further configured to select one of the downhole remote sensors and transmit a query to the selected downhole remote sensor via the common line and wherein each of the downhole remote sensors is individually configured to awake from a standby low power mode upon receiving a query transmitted from the downhole base gauge via the common line, transmit data indicative of at least one of the one or more observable parameters via the common line to the downhole base gauge while awake and reenter the standby low power mode after transmission of the data.
A method of monitoring one or more downhole parameters, comprising:
- providing downhole, a base gauge configured to receive power from a surface power drive via a cable of a downhole electric motor and to communicate data with a surface computing device;
- providing downhole, a plurality of remote sensors electrically coupled to the base gauge in series along a common line and individually configured to generate data indicative of at least one of one or more observable parameters;
- transmitting a query by the base gauge and via the common line, to one of the remote sensors;
- receiving, by the one of the remote sensors, the query wherein receipt of the query causes the one of the remote sensor to awake from a standby low power mode;
- transmitting data indicative of at least one of the one or more observable parameters from the one of the remote sensors via the common line to the base gauge while awake;
- and
- for the one of the remote sensors, reentering the standby low power mode after transmitting the data.
Dependencies are inferred from the claim text.