Rezgui
Fadhel Rezgui, Bievres FR
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20110214498 | FLOW RESTRICTION INSERT FOR DIFFERENTIAL PRESSURE MEASUREMENT - A flow rate device for measuring the flow rate of a fluid flowing through a wellbore is disclosed. The flow rate device includes a differential pressure conduit, a flow restrictor insert and a differential pressure measurement device. The differential pressure conduit is locatable in the wellbore, defines an internal bore, and is adapted to include a restriction having a cross-sectional area to increase the velocity of fluid flowing through the differential pressure conduit to create a differential pressure. The differential pressure conduit defining first and second pressure measuring stations axially spaced along the differential pressure conduit. The flow restrictor insert is located in the restriction to reduce the cross-sectional area of the restriction. The flow restrictor insert defines an internal bore having a cross-sectional area less than the cross-sectional area of the restriction. The flow restrictor insert also has a pressure measuring port aligned with the second pressure measuring station. The differential pressure measurement device has at least one pressure sensor for detecting the pressure at the first pressure station, and for detecting the pressure at the second pressure station to generate a signal indicative of the flow rate of the fluid. | 09-08-2011 |
20120216628 | Method and Apparatus for Differential Pressure Measurement - A system and method for determining pressure differences of a fluid flowing through a differential pressure conduit positioned in a wellbore. The system comprises a first pressure measurement circuit positioned at a first pressure measuring station and including a first pressure sensor to generate a first pressure measurement signal indicative of the pressure measured by the first pressure sensor at a first signal point, and a second pressure measurement circuit positioned at a second pressure measuring station and including a second pressure sensor to generate a second pressure measurement signal indicative of the pressure measured by the second pressure sensor at a second signal point. The calculation of the pressure differential between the first and second pressure measuring stations is based on the first and second pressure measurement signals taken or read from the first and second signal points, wherein the first and third second points are symmetrical. | 08-30-2012 |
Fadhel Rezgui, Chatillon FR
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20090095529 | Measurement Ahead of the Drilling Bit by Analysis of Formation Cuttings Using Ultraviolet Light to Detect the Presence of Oil or Gas - An apparatus for determining the nature of the formation at the bottom of a wellbore being drilled with a tubular drill string through which drilling fluid is pumped to return the drilling fluid to the surface via the wellbore, the apparatus comprising a tool body for installation in a drill string with a bore extending there through and an ultraviolet fluorescence detector in a passageway in the tool body, the tool body being configured to receive drilling fluid from inside the drill string and to receive drilling fluid from outside the drill string, wherein the drilling fluid can be directed past the detector so as to enable measurements to be made. | 04-16-2009 |
20090107724 | METHOD AND APPARATUS FOR CONTINUOUS FORMATION SAMPLING AND ANALYSIS DURING WELLBORE DRILLING - A wellbore formation sample acquisition and analysis instrument includes an annular drill bit configured to couple to one end of a drill string. The bit defines a passageway extending from a cutting face thereof to an exterior surface at a longitudinally spaced apart position from the cutting face. The instrument includes at least one sensor configured to measure a selected parameter of a sample of subsurface formation urged into the passageway by action of the cutting face against subsurface formations. Samples of the subsurface formations are ejected from the exterior surface end of the passageway by the samples entering the cutting face end thereof. | 04-30-2009 |
20090302221 | APPARATUS AND METHOD FOR OPTICALLY DETERMINING THE PRESENCE OF CARBON DIOXIDE - Apparatus for optically determining the presence of carbon dioxide within a fluid, said apparatus comprising:—a light emitting source, an optical sensing probe in contact with the fluid to analyze; optical light transmitting means in order to convey the light emitted from the light emitting source to the optical sensing probe and the light reflected by the optical sensing probe to means to discriminate between wavelengths of light beams reflected by the optical sensing probe;—means to convert wavelengths discriminated light beams into measurement data indicating presence of carbon dioxide within the fluid, wherein the optical sensing probe comprises a tip working as attenuated total reflection (ATR) absorber within the infrared wavelength. | 12-10-2009 |
20100026998 | METHODS AND APPARATUS FOR MICRO-IMAGING - Apparatus and method for investigating underground formations surrounding a borehole, comprises: a drill bit ( | 02-04-2010 |
Fadhel Rezgui, Clamart FR
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20150211968 | Displacement Sensor for Subsea Structures - Systems and methods are described for monitoring displacement on structural elements of subsea systems such as on components of a subsea pipeline network used to transport production fluid from a subsurface wellhead to surface facilities. The described techniques sense changes in displacement using a sensing blade, for example made of crystalline material such as sapphire, that is anchored to the structural element such that it is approximately perpendicular to the direction of sensed displacement. Displacement is sensed as bending of the sensing blade using one or more instruments fabricated on the blade. Robustness of design is in part provided by additional flexible non-sensing blades mounted in parallel to the sensing blade. | 07-30-2015 |
20150276463 | Non-Invasive Acoustic Monitoring of Subsea Containers - Systems and methods are described for non-invasively acoustically monitoring containers to distinguish gas contents from liquid contents. In some embodiments the container is part of a buoyancy tank ( | 10-01-2015 |
Nacer Ddine Rezgui, Herefordshire GB
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20160097852 | Remote Detection And Measurement Of Objects - Provided are methods of using electromagnetic waves for detecting metal and/or dielectric objects. Methods include directing microwave and/or mm wave radiation in a predetermined direction using a transmission apparatus, including a transmission element; receiving radiation from an entity resulting from the transmitted radiation using a detection apparatus; and generating one or more detection signals in the frequency domain using the detection apparatus. Methods may include operating a controller, wherein operating the controller includes causing the transmitted radiation to be swept over a predetermined range of frequencies, performing a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and determining, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident. A system and method for remote detection and/or identification of a metallic threat object using late time response (LTR) signals is also disclosed. | 04-07-2016 |
Nacer Ddine Rezgui, Greater Manchester GB
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20150369756 | SCANNING APPARATUS - A method of scanning a shoe. The method comprises directing from a source at least one first signal at the shoe, the at least one first signal comprising substantially millimetre and/or microwave radiation, receiving at one or more receivers a plurality of second signals, the plurality of second signals comprising reflections of the at least one first signal from different positions with the shoe. The method further comprises processing each of the second signals to determine a plurality of reflection positions within the shoe and processing the plurality of second signals and reflection positions to generate second data, the second data indicating a composition of the shoe. | 12-24-2015 |
Nacer Ddine Rezgui, Manchester GB
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20100005044 | Remote Detection and Measurement of Objects - Provided are methods of using electromagnetic waves for detecting metal and/or dielectric objects. Methods include directing microwave and/or mm wave radiation in a predetermined direction using a transmission apparatus, including a transmission element; receiving radiation from an entity resulting from the transmitted radiation using a detection apparatus; and generating one or more detection signals in the frequency domain using the detection apparatus. Methods may include operating a controller, wherein operating the controller includes causing the transmitted radiation to be swept over a predetermined range of frequencies, performing a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and determining, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident. | 01-07-2010 |
20120256786 | Detection of Objects - A detection method comprising directing radiation such that it is incident upon a target, the radiation containing a component having a first polarisation and a component having a second orthogonal polarisation, detecting radiation which is scattered from the target, and analysing the polarisation state of the detected scattered radiation to determine whether the target includes an object. | 10-11-2012 |
Sana Rezgui, San Francisco, CA US
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20090189634 | SINGLE EVENT TRANSIENT MITIGATION AND MEASUREMENT IN INTEGRATED CIRCUITS - A method for single event transient filtering in an integrated circuit device is described. The device comprises three sequential elements, each having a data input and a data output with each of the three data outputs coupled to one of three inputs of a voting gate. The method comprises generating first and second nominally equivalent logic signals in first and second SET domains, converting the first and second nominally equivalent logic signals into first, second and third nominally equivalent data channels, and transmitting the first, second and third nominally equivalent data channels to the data inputs of the first, second and third sequential elements. | 07-30-2009 |
20090204933 | SINGLE EVENT TRANSIENT MITIGATION AND MEASUREMENT IN INTEGRATED CIRCUITS - A method for single event transient filtering in an integrated circuit device is described. The device comprises three sequential elements, each having a data input and a data output with each of the three data outputs coupled to one of three inputs of a voting gate. The method comprises generating first and second nominally equivalent logic signals in first and second SET domains, converting the first and second nominally equivalent logic signals into first, second and third nominally equivalent data channels, and transmitting the first, second and third nominally equivalent data channels to the data inputs of the first, second and third sequential elements. Provision is made for applying the method to logic designs implemented in programmable logic integrated circuit devices. | 08-13-2009 |
20100325598 | SINGLE EVENT TRANSIENT MITIGATION AND MEASUREMENT IN INTEGRATED CIRCUITS - A method for single event transient filtering in an integrated circuit device is described. The device comprises three sequential elements, each having a data input and a data output with each of the three data outputs coupled to one of three inputs of a voting gate. The method comprises generating first and second nominally equivalent logic signals in first and second SET domains, converting the first and second nominally equivalent logic signals into first, second and third nominally equivalent data channels, and transmitting the first, second and third nominally equivalent data channels to the data inputs of the first, second and third sequential elements. | 12-23-2010 |