Halliburton Energy Services, Inc.

Charles Michael Pool

Neal Gregory Skinner

Frank Urias

Nancy Suzan Davis

Clark E Robison

Kenneth J Carstensen

Craig William Godfrey

James Randolph Lovorn

John J Goiffon

Emad Bakri

Saad Saeed

Aaron Ronald Reynolds

Christopher Allen Grace

Cody Neal Butler

Eric Miller

Ryan Hourd

Nancy Suzan Cotten

A choke valve assembly, system, and method can be used with a drill string in a wellbore to aid in controlling the bottom hole pressure during drilling of the wellbore. The choke valve assembly can have a primary choke and one or more supplemental chokes, where these choke valves each have a controllable range relative to the flow and pressure of drilling fluid passing through the assembly. A control unit can automatically actuate the primary choke and one or more supplemental chokes in order to both maintain the choke valves within their controllable ranges and concurrently maintain a consistent boom hole pressure in the connected wellbore.

Automatic choke optimization and selection for managed pressure drilling

A system is provided that can include a rotating control device (RCD) with a sealing element and a force measurement device for measuring an axial force imparted to the sealing element. The system can also include a computing device that is communicatively coupled to the force measurement device for receiving the axial force measurements and from which the wear status of the sealing element can be determined.

Sealing element wear detection for wellbore devices

A drilling method includes assigning values to behaviors of drilling parameters during a drilling operation; forming multiple parameter signatures, each of the parameter signatures comprising a respective combination of the values; comparing the parameter signatures to multiple event signatures, each of the event signatures being indicative of a respective drilling event; and controlling the drilling operation in response to at least a partial match resulting from comparing the parameter signatures to the event signatures. Another method includes defining an event signature comprising a unique combination of a behavior of each of multiple drilling parameters, the event signature being indicative of a drilling event; accessing data from each of multiple sensors which sense the respective drilling parameters during a drilling operation; determining multiple parameter signature segments from the respective sensed drilling parameters; combining the parameter signature segments, thereby forming a parameter signature; and comparing the parameter signature to the event signature.

Well drilling methods with event detection

A well drilling method can include detecting a drilling event by comparing a parameter signature generated during drilling to an event signature indicative of the drilling event, and automatically controlling a drilling operation in response to at least a partial match resulting from comparing the parameter signature to the event signature. A well drilling system can include a control system which compares a parameter signature for a drilling operation to an event signature indicative of a drilling event, and a controller which controls the drilling operation automatically in response to the drilling event being indicated by at least a partial match between the parameter signature and the event signature.

Well drilling methods with automated response to event detection

A method of maintaining a desired downhole pressure during a drilling operation can include measuring a parameter with a sensor, communicating actual parameter values from the sensor to a predictive device, training the predictive device to output predicted parameter values in response to input of the actual parameter values, and outputting the predicted parameter values from the predictive device when the predictive device ceases receiving the actual parameter values. A well drilling system can include a predictive device which outputs predicted parameter values in response to input of actual parameter values to the predictive device. The predictive device continues to output the predicted parameter values, even when the predictive device fails to receive valid actual parameter values. Another well drilling system includes a data validator which communicates valid actual parameter values to the predictive device, but does not communicate invalid actual parameter values to the predictive device.

Pressure and flow control in drilling operations

The present invention relates to a control system for selectively supplying electrical power in a remote environment. The system comprises a plurality of electrical circuits, each designed to operate over a unique frequency passband. Power transmitted within the frequency passband of a circuit is filtered through that circuit to power a corresponding remote device. One or more remote devices can be simultaneously powered by transmitting power within the frequency passbands of the corresponding circuits. It is advantageous to design relatively narrow passbands to accommodate a relatively large number of circuits and corresponding devices for remote operation and a triac, rectifier or other suitable turn-on gate can be incorporated into each circuit to effectively control the width of the frequency passband of each circuit. Alternatively, an operational amplifier could be used.

Power discriminating systems

An apparatus and method of communicating in a tubular system ( ) through a media ( ) disposed therein and actuating a controllable device ( ) are disclosed. The apparatus and method utilize a transmission apparatus ( ) at a transmission node that is in communication with the media ( ). The transmission apparatus ( ) generates pressure impulses that are propagated through the media ( ). The pressure impulses may be either positive or negative pressure impulses depending upon the selected transmission apparatus. The pressure impulses are detected by a reception apparatus ( ) at a reception node. The detection apparatus may detect the pressure impulses as variation in the media ( ) or as variation in the tubular system ( ) caused by the pressure impulses. Once the detection apparatus ( ) has detected the appropriate pressure impulse or pattern of pressure impulses, a signal may be generated to actuate the controllable device ( ).

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Bedford, TX, United States of America

Charles Michael Pool