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US 12,560,076 B1Granted
Systems and methods to monitor operabilty of an actuator of a rotatable steerable system (RSS)
AssigneeSchlumberger Technology Corporation
InventorsStuart Alan Kolbe, Denis Li
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Abstract
A system includes a rotatable steerable system (RSS) of a drilling system. The RSS includes a first steering pad, a first fluid actuator coupled to the first steering pad, a first vent passage coupled to the first fluid actuator, a first valve coupled to the first fluid actuator, and a first pressure sensor coupled to the first fluid actuator. The first pressure sensor is configured to monitor pressure of the first fluid actuator as an indication of a health condition of the RSS.
Claims20
A system, comprising:
- a rotatable steerable system (RSS) of a drilling system, wherein the RSS comprises:
- a first steering pad;
- a first fluid actuator coupled to the first steering pad;
- a first vent passage coupled to the first fluid actuator;
- a first valve coupled to the first fluid actuator;
- and
- a first pressure sensor coupled to the first fluid actuator;
- and
- a controller configured to i) analyze pressure measured by the first pressure sensor to determine a first pressure profile during an actuation cycle of the first fluid actuator, wherein the first pressure profile comprises a first depressurized pressure curve for the actuation cycle, and the first depressurized pressure curve corresponds to the pressure of the first fluid actuator after closure of the first valve, and ii) determine a health condition of the RSS based on the first pressure profile.
6 more elements
A method, comprising:
- operating a rotatable steerable system (RSS) of a drilling system, wherein the RSS comprise:
- a first steering pad;
- a first fluid actuator coupled to the first steering pad;
- a first vent passage coupled to the first fluid actuator;
- a first valve coupled to the first fluid actuator;
- and
- a first pressure sensor coupled to the first fluid actuator;
- and
- configuring a controller to i) analyze pressure measured by the first pressure sensor to determine a pressure profile during an actuation cycle of the first fluid actuator, wherein the pressure profile comprises a depressurized pressure curve for the actuation cycle, and the depressurized pressure curve corresponds to the pressure of the first fluid actuator after closure of the first valve, and ii) determine a health condition of the RSS based on the pressure profile monitoring.
6 more elements
A system, comprising:
- a controller configured to:
- operate a rotatable steerable system (RSS) of a drilling system, wherein the RSS comprises:
- a first steering pad;
- a first fluid actuator coupled to the first steering pad;
- a first vent passage coupled to the first fluid actuator;
- a first valve coupled to the first fluid actuator;
- and
- a first pressure sensor coupled to the first fluid actuator;
- analyze pressure measured by the first pressure sensor to determine a pressure profile during an actuation cycle of the first fluid actuator, wherein the pressure profile comprises a depressurized pressure curve for the actuation cycle, and the depressurized pressure curve corresponds to the pressure of the first fluid actuator after closure of the first valve;
- determine a health condition of the RSS based on the pressure profile;
- and
- perform at least one control action in response to the health condition of the RSS.
9 more elements
Dependencies are inferred from the claim text.