Baker Hughes Corporation

Baker Hughes, a Ge Compnay, LLC

Ingolf Wassermann

Hanno Reckmann

Michael Neubert

Andreas Peter

Dmitriy Dashevskiy

Oliver Hoehn

Bilel Said

Sven Krueger

John D Macpherson

Fang Zhang

Thomas Kelch

Christian Hansen

Nabil Hentati

Jose I Alonso Ortiz

Levin L Bong

Methods and apparatuses for controlling a trajectory of a borehole being drilled into the earth are provided. The apparatus includes a drilling system including a drill tubular, a disintegrating device, and a steering system coupled to the drill tubular configured to steer the drilling system, the drilling system configured to drill the borehole by receiving control outputs from at least one control unit for controlling parameters of the drilling system, the at least one control unit configured to provide the control outputs to the steering system, the at least one control unit being configured to provide a depth-based control output.

Depth-based borehole trajectory control

According to an embodiment, a computer-implemented method includes defining, by a processing device, the workflow as a plurality of steps. The method further includes defining, by the processing device, a contextual information field associated with at least one of the plurality of steps. The method further includes receiving, by the processing device, contextual information associated with the contextual information field. The method further includes displaying, by the processing device, the at least one of the plurality of steps of the workflow and the contextual information associated with the contextual information field by integrating the contextual information into the at least one of the plurality of steps.

Integrating contextual information into workflow for wellbore operations

An example computer-implemented method includes defining, by a processing device, a workflow for a wellbore operation as a plurality of steps. The method further includes defining, by the processing device, a contextual information field associated with at least one of the plurality of steps. The method further includes receiving, by the processing device, contextual information associated with the contextual information field. The method further includes displaying, by the processing device, the at least one of the plurality of steps of the workflow and the contextual information associated with the contextual information field by integrating the contextual information into the at least one of the plurality of steps.

Methods and apparatuses for controlling a trajectory of a borehole being drilled into the earth are provided. The apparatus includes a drilling system including a drill tubular, a disintegrating device, and a steering system coupled to the drill tubular configured to steer the drilling system, the drilling system configured to drill the borehole by receiving control outputs from at least one control unit for controlling parameters of the drilling system, the at least one control unit configured to provide the control outputs to the steering system, the at least one control unit being configured to provide depth-based control.

A method of canceling noise in a wellbore telemetry system includes, acquiring at least one signal in the system, predicting at least one deterministic component of the at least one signal based upon a change of at least one deterministic component from past signal values, and subtracting the at least one predicted deterministic component from the acquired at least one signal.

Noise cancellation in wellbore system

The disclosure is directed to method and apparatus for communication through a fluid. The method includes measuring signals in the fluid at at least two spaced apart positions; estimating a subset of a separation matrix; and using the estimated subset and the signals to estimate a signal sent by the message source. The apparatus may include a message source on a bottom hole assembly; sensors disposed at least two spaced apart locations; and at least one processor configured to: estimate a subset of a separation matrix based on the signals and use the subset to estimate a message signal set by the message source.

Estimation of multichannel mud characteristics

Measurements made by a rotating sensor on a bottomhole assembly are used to determine the toolface angle of the BHA. The method includes using a phase locked loop (PLL) to determine a phase difference between the sensor output and a reference signal.

Phase estimation from rotating sensors to get a toolface

A system for optimizing a mud-pulse telemetry system, the system including: a plurality of sensors distributed along a drill string adapted for being disposed in a borehole, each sensor configured to perform a measurement of a characteristic of at least one of mud in a column within the borehole and a mud-pulse telemetry signal propagating in the mud; and a processing unit for receiving the measurements, the processing unit comprising an algorithm to compile a data set from the measurements and to determine a parameter of the mud-pulse telemetry system using the data set to optimize the mud-pulse telemetry system. A method and a computer program product are also provided.

Mud channel characterization over depth

A communication method includes: receiving input data at a transmitter, the transmitter including at least one convolutional encoder and at least one modulator; applying the input data to a trellis-coded modulation (TCM) scheme to encode the input data and produce one or more TCM symbols representing the encoded data; applying the one or more TCM symbols to a second modulation scheme, the second modulation scheme including a pulse modulation in combination with an additional modulation; and generating one or more modulation symbols representing the encoded data based on the second modulation scheme.

Apparatus and method for coding and modulation

Measurements made with at least two sensors (flow rate or pressure) during generation of a message concurrently with operation of a noise source are used to estimate a channel transfer function. The estimated transfer function is then used to attenuate pump noise in a mud pulse telemetry system. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Estimation of properties of mud

Channel estimation and signal equalization is used in a mud-pulse telemetry system for uplink communication during drilling of wellbores.

Channel equalization for mud-pulse telemetry

The transfer function of the communication channel in a mud pulse telemetry system is determined by sending a known signal through the channel and spectral analysis of the received signal. The known signal may be a chirp signal or a stepped frequency signal. Based on the determined transfer function, operating parameters of the pulser are adjusted.

Identification of the channel frequency response using chirps and stepped frequencies

Measurements made with dual sensors (flow rate or pressure) are used to attenuate pump noise in a mud pulse telemetry system.

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Hannover, Germany

Ingolf Wassermann