Halliburton Energy Services, Inc.

Houston Radar LLC

Nova Gas Transmission Ltd.

Sergei Sharonov

Randal Thomas Beste

Donald Kyle

Vimal Vinod Shah

Wallace R Gardner

Jeffrey Lee Moore

Jesse Kevin Hensarling

Imran Sharif Vehra

Malcolm Douglas McGregor

Vipin Malik

Brian Hill

Stanley J Smith

Richard Thomas Hay

Christopher A Golla

Mark Anthony Sitka

Ronald G Earles

James Joseph Freeman

Darwin Edward Kiel

Michael W Holcombe

Jeffrey Bowden Lasater

John R Hardin

Ian David Williamson

Pierre-Jean Daniel

Jeffrey B Lasater

Richard T Hay

Mark A Sitka

Imran Vehra

Jr Hardin John R

A first method includes receiving a first reflected radar signal from a target in a first field of view and receiving a second reflected radar signal from a target in a second field of view offset from the first field of view by a predetermined distance; transforming the first and second reflected radar signals to obtain first and second sets of frequency coefficients, from which a frequency-dependent phase difference is obtained; and calculating a time-delay from the slope of the frequency dependence. A second method includes obtaining summed difference values between the first and second radar responses, where each of the summed difference values corresponds to different time shifts between the first and second radar response, and deriving from the summed difference values a time-delay associated with the target's motion from the first field of view to the second field of view. A third method combines the time-delays or associated speeds obtained from independent estimators.

Robust dual-radar-beam systems and methods for traffic monitoring

An embodiment includes an apparatus for wireless communications in a drilling operations environment. In an embodiment, the apparatus includes an instrument hub that is inline with drill pipe of a drill string. The instrument hub includes a sensor to receive downhole communications from downhole. The instrument hub also includes a transmitter to wireless transmit data representative of the downhole communications to a data processor unit.

Wireless communications in a drilling operations environment

An apparatus for wireless communications in a drilling operations environment can include an instrument hub that is inline with drill pipe of a drill string. The instrument hub includes a sensor to receive downhole communications from downhole. The instrument hub also includes a transmitter to wireless transmit data representative of the downhole communications to a data processor unit.

An inductive coupling system including a mandrel and an inner sleeve and outer housing that surround and rotate relative to the mandrel. The system also includes a mandrel electronics system and a housing electronics system that communicate electronically using a mandrel inductive coupler and a housing inductive coupler. The mandrel electronics system may also communicate with equipment on the surface. Alternatively, the system may include a mandrel and first and second mandrel electronics systems in different mandrel sections. The first and second mandrel electronics systems communicate electronically using a mandrel inductive coupler. Also alternatively, the system may include a mandrel and an inner sleeve and outer housing that surround and rotate relative to the mandrel. The system also includes a mandrel electronics system and a housing electronics system that communicate electronically using a housing inductive coupler.

Inductive coupling system

A resistivity tool includes receiver electronics near each receiver antenna loop. Placement of the electronics in this position such as at the circuit card between the terminal ends of the receiver antenna loop improves signal to noise ratio by reducing or eliminating interference, noise, and cross-talk of transmissions from the receiver to a remote microprocessor. By using material such as silicon-on-sapphire, electronics can be miniaturized and operate reliably at when exposed to high temperatures, even for long periods.

Receiver electronics proximate antenna

An optical design for delivering or receiving light from a fluid being measured is disclosed. The optical design is capable of immersion in the fluid being measured, and is capable of operating with fluids that have a different index of refraction. The optical design includes a solid prism of optical material to which a fiber optic attaches by a suitable adhesive. In an optical delivery system, light from the fiber enters the prism and reflects off an internal mirror to a second internal reflective surface. The second internal reflective surface focuses the light to a fixed point through an exit surface of the prism. The second internal reflective surface may in the shape of an ellipse, or may comprise a diffractive surface. The exit surface has a spherical concave shape that is centered on the fixed point where the light is focused, so that light passes through the exit surface at substantially ninety degrees. In an optical collection system, light from a point enters the prism at an entry surface, that is spherically concave so that light passes through the entry surface at substantially ninety degrees. Light then reflects from a first internal reflective surface that may be a diffractive lens or an elliptically shaped lens, to thereby focus the light received from the point. Light reflecting from the first internal reflective surface is received at a second mirrored surface, where the light is reflected to the base of the prism, where the fiber optic attaches.

Optical flow meter capable of operating with a variable refractive index

Growing community of inventors

Houston, TX, United States of America

Sergei Sharonov