Halliburton Energy Services, Inc.

Clint Paul Lozinsky

Hsu-Hsiang Wu

Jonathan Peter Zacharko

David Yan Lap Wong

Boguslaw Wiecek

Matthew Chase Griffing

Jin Ma

Michael S Bittar

Richard Thomas Hay

Evan Lloyd Davies

Michael Dewayne Finke

Li Pan

Daniel Winslow

Kennedy John Kirkhope

Christopher A Golla

John Ransford Hardin, Jr

Imran Sharif Vehra

Jon Troy Gosney

Svetozar Dimitrov Simeonov

Zinovy B Krugliak

Yi Jing Fan

Gary Lorne Donison

Byron John Sand

David Yan Wong

A system and a method for evaluating a subterranean earth formation include a logging tool locatable in a wellbore dispose in the formation. The logging tool may include a transmitter antenna and a single receiver antenna. The transmitter antenna is configured to transmit a first electromagnetic signal into the subterranean earth formation. The system further includes a processor and a non-transitory memory device. The memory device includes instructions that cause the processor to control a current and a voltage sourced to the transmitter antenna, receive, via the single receiver antenna, a second electromagnetic signal emitted by the subterranean earth formation in response to receiving the first electromagnetic signal, and determine a resistivity of the subterranean earth formation based on the second electromagnetic signal.

Resistivity determination from one transmitter and one receiver antennas

A system and method for evaluating a subterranean formation includes a logging tool that includes transmitter and receiver antennae. The transmitter antenna transmits a first electromagnetic signal into the formation at a plurality of depths. The receiver antenna receives a plurality of second electromagnetic signals emitted by the formation in response to the first signal. The system and method also include a processor configured to calculate resistivity values for the second signals, calculate solutions to an inversion algorithm of the formation, filter the solutions into a plurality of convergent solutions, pixilate the convergent solutions into pixilated solutions, calculate ensemble statistics for the pixilated solutions, calculate a difference in resistivity value between successive pixels, identify presumptive layer boundaries based on the differences in resistivity values, calculate composite resistivity statistics from the pixilated solutions based on the presumptive layer boundaries and the ensemble statistics, and generate a formation model.

System and methods for evaluating a formation using pixelated solutions of formation data

This disclosure presents an apparatus and system for lowering the cost of implementing a downhole sensor system using attachable collars. In some aspects, the attachable collar includes a transmitter component, while supporting electronics are included with a main collar, thereby reducing the cost of the attachable collar. The supporting electronics can send a transmission signal, a control signal, a synchronization clock signal, a selected transmission frequency, a sensor orientation and selection, and other instructions to the transmitter in the attachable collar. The receiver in the main collar can receive the output, as reflected by the subterranean formation, and transform the output to subterranean formation evaluation measurements. The measurements can be communicated to other systems. In some aspects, the attachable collar can include the receiver and the main collar can include the transmitter. In some aspects, additional attachable collars can be included on the drill string to increase the transmitter-receiver spacing.

Minimal electronic sensor collars

A system and method for determining an uncertainty of a distance to bed boundary (DTBB) inversion of a geologic formation. The system or method includes receiving logging data from a borehole tool, performing a first DTBB inversion using the logging data to calculate first DTBB solutions, adding quantified noise to the logging data to produce an adjusted signal, performing a second DTBB inversion using the adjusted signal to calculate second DTBB solutions, comparing the first DTBB solutions to the second DTBB solutions to determine an uncertainty of the first DTBB solutions based on a relationship of the quantified noise and the difference between the first DTBB solutions and the second DTBB solutions.

Determining distance to bed boundary uncertainty for borehole drilling

A desiccating module configured to be installed in a downhole tool is provided. The desiccating module includes a housing having a containment portion, and desiccant located in the containment portion of the housing capable of retaining moisture therein. The housing is configured to be retained in a downhole tool containing moisture sensitive electronics. The housing is configured to permit passage of moisture from outside the housing to the containment portion and to retain the desiccant within the containment portion. The desiccant have a retention capacity sufficient to hold a predetermined threshold amount of moisture.

Desiccating module to reduce moisture in downhole tools

A bottom hole assembly includes a single wire bus, a legacy sensor coupled to the single wire bus, and at least one high frequency communication sensor coupled to the single wire bus. The high frequency communication sensor injects a high frequency signal alternating between high frequency synchronization pulses and high frequency data signals onto the single wire bus. A first high frequency pass filter coupled between the at least one high frequency communication sensor and the single wire bus is also included. The high frequency pass filter passes the high frequency signal to the single wire bus from the high frequency communication sensor. The bottom hole assembly includes a first high frequency blocking filter coupled between the legacy sensor and the single wire bus. The high frequency blocking filter blocks the high frequency signal from the high frequency communication sensor from disturbing a legacy signal at the legacy sensor.

System and method for multi-frequency downhole bus communication

An example slip-ring interface may include a first section and a second section rotationally independent from the first section. At least one conductor path between the first section and the second section may be selectively associated with and dedicated to the transmission of signals with a first signal type. At least one conductor path between the first section and the second section may be selectively associated with and dedicated to the transmission of signals with a second signal type. If error conditions occur, the signal types associated with one or more of the conductor paths may be changed so that signals of both the first and second signal types are transmitted across the interface.

Redundant, adaptable slip ring

An angular position sensor can include a magnetic device from which a magnetic field emanates, and multiple magnetometers, whereby each magnetometer senses a varying strength of the magnetic field due to relative rotation between components of a well tool. A method of determining an azimuthal position of a shaft which rotates relative to an outer housing can include securing a selected one of at least one magnetic device and at least one magnetometer to the shaft, securing the other of the magnetic device and the magnetometer to the outer housing, a fluid motor rotating the shaft relative to the outer housing in the well, and the magnetometer sensing a varying strength of a magnetic field emanating from the magnetic device as the shaft rotates relative to the housing.

Angular position sensor with magnetometer

A method for controlling an electrical actuator is disclosed. The method may include driving an electrical actuator at a power level during each of a plurality of actuation attempts and determining whether the electrical actuator actuated during each of the plurality of actuation attempts. The method may also include counting a number of failed actuation attempts, counting a number of successful actuation attempts. In addition, the method may include adjusting the power level based on at least one of the number of failed actuation attempts and the number of successful actuation attempts, and driving the electrical actuator at an adjusted power level.

Optimizing power delivered to an electrical actuator

Apparatus, systems, and methods may operate to determine the rotating magnetic tool face associated with a rotating section of a drillstring, to determine angular displacement between the rotating section of the drillstring and a substantially fixed section housing the rotating the section, and to determine the magnetic tool face of the substantially fixed section by combining the rotating magnetic tool face and the angular displacement. Additional apparatus, systems, and methods may operate in a similar manner to determine tool face locations.

Azimuthal orientation determination

An orientation sensing apparatus includes a rotatable first member, an orientation sensor device fixed with the first member for generating orientation data relating to an orientation sensor device orientation, and a rotation sensor device for generating rotation data relating to rotation of the first member. A method for determining an orientation includes assembling a set of sensor data including the orientation data and rotation data and processing the set of sensor data to generate a set of corrected orientation data. The set of corrected orientation data includes the orientation data which has been corrected using the rotation data to reduce the effects of rotation of the first member and misalignment of the gravity sensor device. One or more sets of corrected orientation data may be processed to determine an inclination orientation of the first member or a toolface orientation of a second member which is connected with the first member.

Growing community of inventors

Kingwood, TX, United States of America

Clint Paul Lozinsky