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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 17. Отображено 17.
27-04-2017 дата публикации

Downhole Caliper Using Multiple Acoustic Transducers

Номер: US20170115423A1
Автор: Hiroshi Hori, Yoshino Matsumoto, Kojiro Nishimiya, Kiyomitsu Hikida, Jean-Christophe Auchere, HORI HIROSHI, MATSUMOTO YOSHINO, NISHIMIYA KOJIRO, HIKIDA KIYOMITSU, AUCHERE JEAN-CHRISTOPHE, Hori Hiroshi, Matsumoto Yoshino, Nishimiya Kojiro, Hikida Kiyomitsu, Auchere Jean-Christophe
Принадлежит: Schlumberger Technology Corp

A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.

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Номер записи: 1
13-09-2016 дата публикации

Heat dissipation in downhole equipment

Номер: US0009441475B2
Автор: Florence Garnier, Jean-Christophe Auchere, Alain Guelat, GARNIER FLORENCE, AUCHERE JEAN-CHRISTOPHE, GUELAT ALAIN, Garnier Florence, Auchere Jean-Christophe, Guelat Alain
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION, SCHLUMBERGER TECHNOLOGY CORP, Schlumberger Technology Corporation

A downhole assembly may include a housing having an outer surface and an inner surface, the outer surface adapted for contact with a downhole fluid, the inner surface defining an interior volume. One or more heat producing components may be disposed within the interior volume and in thermal contact with a structural component (e.g., chassis). One or more thermal dissipation members may be disposed within the housing, the one or more thermal dissipation members in thermal contact with the chassis and in thermal contact with the inner surface of the housing.

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Номер записи: 2
23-05-2013 дата публикации

Heat Dissipation in Downhole Equipment

Номер: US20130126171A1
Автор: Auchere Jean-Christophe, Garnier Florence, Guelat Alain
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION

A downhole assembly may include a housing having an outer surface and an inner surface, the outer surface adapted for contact with a downhole fluid, the inner surface defining an interior volume. One or more heat producing components may be disposed within the interior volume and in thermal contact with a structural component (e.g., chassis). One or more thermal dissipation members may be disposed within the housing, the one or more thermal dissipation members in thermal contact with the chassis and in thermal contact with the inner surface of the housing. 1. A downhole assembly comprising:a housing having an inner surface and an outer surface;a structural component extending through the housing;one or more heat producing components; andone or more thermal dissipation members extending from the structural component and in thermal contact with the one or more heat producing components and the inner surface of the housing, such that at least a portion of thermal energy generated from the one or more heat producing components is dissipated through the housing by transferring said thermal energy from the one or more heat producing components to the inner surface of the housing via the one or more thermal dissipation members.2. The downhole assembly of claim 1 , wherein the structural component is in thermal contact with the one or more heat producing components and the one or more thermal dissipation members; and wherein at least a portion of said thermal energy is transferred from the one or more heating producing components to the one or more thermal dissipation members via the structural component.3. The downhole assembly of or claim 1 , wherein said thermal energy is dissipated into a downhole fluid that is in contact with the outer surface of the housing.43. The downhole assembly of any of - claims 1 , wherein at least a portion of the one or more thermal dissipation members is in physical contact with the inner surface of the housing.53. The downhole assembly of ...

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Номер записи: 3
05-03-2020 дата публикации

Correcting Eccentering Effect in Pulse-Echo Imaging

Номер: US20200072999A1
Автор: Auchere Jean-Christophe, Hori Hiroshi, Pedrycz Adam
Принадлежит:

Methods for correcting eccentering effects on echoes detected from ultrasonic pulses emitted by a transducer of a downhole tool. Echo envelope amplitude, azimuth, and location for each echo is utilized to assess echo amplitude sensitivity to geometric and spatial characteristics of the downhole tool within the wellbore. Echo envelope amplitudes are corrected for eccentering effects based on the assessed sensitivity. A visual representation of the corrected echo envelope amplitudes is the generated. Also disclosed herein are tangible, non-transient, computer-readable media comprising instructions executable by a processor to carry out the methods, as well as systems including downhole tools and processing devices operable to carry out the methods. 1. A method comprising:collecting data for a period of time by detecting a plurality of echoes from a plurality of ultrasonic pulses emitted by at least one transducer of a downhole tool toward a surface of a wellbore and through drilling mud contained within the wellbore;extracting variable information from the collected data, including at least echo envelope amplitude, azimuth, and location for each echo;assessing, utilizing the extracted variable information, sensitivity of the extracted echo envelope amplitudes to geometric and spatial characteristics of the downhole tool within the wellbore, wherein the geometric and spatial characteristics include at least a standoff between the transducer and the wellbore and an incident angle;correcting echo envelope amplitudes for eccentering effects based on the assessed sensitivity; andgenerating a visual representation of the corrected echo envelope amplitudes.2. The method of wherein the extracted variable information comprises echo envelope shape claim 1 , echo travel time and/or standoff claim 1 , echo wave propagation slowness claim 1 , and echo incident angle for each echo.3. The method of wherein the sensitivity assessment comprises:(i) determining the eccentering effects ...

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Номер записи: 4
05-05-2016 дата публикации

Borehole Tool

Номер: US20160123130A1
Автор: Auchere Jean-Christophe, Moyal Olivier, Ounadjela Abderrhamane, VALERO HENRI-PIERRE
Принадлежит:

A borehole tool used in a borehole comprises a tool body, a plurality of arms connected to the tool body so as to be movable radially relative thereto between a closed position and an open position, and a plurality of pads with a totally rounded outer shape. Each of the pads is mounted on each movable portion of the arms so as to be rotatable about a radial axis relative to the tool body according to the arm movement between the closed position and the open position. 1. A borehole tool used in a borehole , comprising:a tool body;a plurality of arms connected to the tool body so as to be movable radially relative thereto between a fully closed position and a fully open position;a plurality of pads with a rounded outer shape, each of the pads being mounted on each movable portion of the arms so as to be rotatable about a radial axis relative to the tool body according to the arm movement between the fully closed position and the fully open position; andwherein the plurality of pads provide substantially continuous circumferential coverage for a range of internal sizes of the borehole corresponding to the fully closed position and the fully open position.2. The borehole tool according to claim 1 , wherein the plurality of pads are adjacently arranged so as to provide different circumferential coverage according to the azimuth with respect to the longitudinal axis of the borehole.3. The borehole tool according to claim 1 , wherein the total outer shape of the plurality of pads at the closed position is an almost ovoid or prolate spheroidal shape.4. The borehole tool according to claim 1 , wherein at least one of the number and shape of pads is determined by the range of internal size of the borehole.5. The borehole tool according to claim 1 , wherein at least one of the number and shape of pads is determined by the overlap percentage of coverage between the adjacent pads.6. The borehole tool according to claim 1 , wherein at least one of the number and shape of pads is ...

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Номер записи: 5
26-05-2016 дата публикации

Versatile Acoustic Source

Номер: US20160146956A1
Автор: Auchere Jean-Christophe, Ounadjela Abderrhamane, VALERO HENRI-PIERRE
Принадлежит:

A technique facilitates acoustic measurement and analysis in a variety of acoustic applications. An acoustic source is provided with a housing, e.g. a cylindrical housing, and a motor located within the housing. A piston is driven by the motor. The acoustic source also is provided with a radiating plate mounted along the housing and exposed to an environment surrounding the housing. A fluid passage contains actuating fluid and extends between the piston and the radiating plate. The piston and the radiating plate are linked by the fluid passage such that reciprocation of the piston by the motor causes oscillation of the radiating plate to create an acoustic signal. In some applications, a plurality of radiating plates and/or a plurality of motors may be arranged to enable monopole, dipole, cross-dipole, and/or quadrupole measurements. 1. A system for providing an acoustic signal , comprising: a tubular housing with a longitudinal axis;', 'a plurality of motors disposed within the tubular housing and having a plurality of pistons, each motor having a corresponding piston oriented for reciprocal motion in a direction generally parallel with the longitudinal axis;', 'a plurality of radiating plates arranged along an outer diameter of the tubular housing for oscillation in a lateral direction with respect to the longitudinal axis, the oscillation providing acoustic signals; and', 'a plurality of fluid passages filled with an actuating fluid which places the plurality of pistons in communication with the plurality of radiating plates such that reciprocation of the plurality of pistons causes oscillation of the plurality of radiating plates., 'an acoustic source having2. The system as recited in claim 1 , wherein each motor of the plurality of motors is associated with a corresponding radiating plate of the plurality of radiating plates via a dedicated fluid passage of the plurality of fluid passages.3. The system as recited in claim 2 , wherein each radiating plate is ...

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Номер записи: 6
24-06-2021 дата публикации

Methods for transmitting data acquired downhole by a downhole tool

Номер: US20210192712A1
Автор: Auchere Jean-Christophe, Escobar Ana, Kherroubi Josselin, Maeso Carlos, Quesada Daniel, Tamaazousti Youssef
Принадлежит:

The disclosure relates to a method and system for downhole processing of data, such as images, including using a set of downhole sensors to measure parameters relative to the borehole at a plurality of depths and azimuths and detecting predetermined features of the borehole, using a downhole processor, with a trained machine-learning model and extracting characterization data, characterizing the shape and position of the predetermined features that are transmitted to the surface. It also provides a method and system for providing an image of a geological formation at the surface including transmitting a first dataset to the surface that will be used for reconstructing an image at the surface, downhole processing of a second dataset to detect predetermined features and extract characterization data that are transmitted at the surface and displaying a combined image comprising the predetermined features overlaid on the first image. 1. A method for providing an image relative to a borehole crossing a geological formation based on data acquired downhole by a downhole tool comprising at least a first and second imaging sensor sets , the method including:a. Transmitting a first dataset acquired by the first imaging sensor set at the surface,b. Reconstructing a first image using the first dataset,c. Processing downhole a second dataset acquired by the second imaging sensor set, wherein the downhole processing includes detecting predetermined rock structural features of the borehole and extracting characterization data characterizing the shape and position of at least one of the predetermined features,d. Transmitting at the surface the characterization data,e. Based on characterization data, displaying a combined image comprising the predetermined rock structural features overlaid on the first image.2. The method of claim 1 , wherein the first imaging sensor set is a resistivity sensor set and the second imaging sensor set is an ultrasonic sensor set.3. The method of claim ...

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Номер записи: 7
25-07-2019 дата публикации

Ultrasonic Cutting Detection

Номер: US20190226323A1
Автор: Auchere Jean-Christophe, Hori Hiroshi, Pedrycz Adam
Принадлежит:

Apparatus and methods for identifying drilling cuttings downhole by extracting an echo from a pulse-echo waveform acquired utilizing a downhole ultrasonic tool having an acoustic device. An energy before echo profile preceding the extracted echo is determined, and then the energy before echo profile is processed to remove effects associated with the acoustic device. A cutting is then identified from the processed energy before echo profile. 1. A method comprising:extracting an echo from an ultrasonic waveform, wherein the waveform was acquired utilizing a downhole ultrasonic tool having an acoustic device and operated within a wellbore extending into a subterranean formation;determining for the ultrasonic waveform an energy before echo profile preceding the extracted echo;processing the energy before echo profile to remove effects associated with the acoustic device; andidentifying a cutting from the processed energy before echo profile.2. The method of further comprising utilizing the downhole ultrasonic tool to acquire the waveform.3. The method of wherein extracting the echo comprises identifying a largest peak in the waveform claim 1 , and wherein the method further comprises determining a first break associated with the largest peak.4. The method of wherein the first break is determined based on a travel time and an empirically-determined temporal offset to the travel time.5. The method of wherein determining the first break comprises extrapolating a fitted portion of an envelope of the waveform to an amplitude of zero.6. The method of wherein the first break is determined based on an entropy-based curve minimum time.7. The method of wherein determining the energy before echo profile comprises summing squared amplitude values of the waveform that precede the first break.8. The method of wherein extracting the echo comprises identifying a first one of a plurality of peaks in the waveform claim 3 , wherein the first peak is larger than each of the other peaks ...

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Номер записи: 8
02-11-2017 дата публикации

SYSTEM AND METHODOLOGY FOR ACOUSTIC MEASUREMENT DRIVEN GEO-STEERING

Номер: US20170314385A1
Автор: Auchere Jean-Christophe, Deger Evgeniya, ENDO Takeshi, Hori Hiroshi, Nakajima Hiroshi, Sakiyama Naoki, VALERO HENRI-PIERRE
Принадлежит:

A technique facilitates use of acoustic measurements to enable geo-steering during a well operation. A steerable well string is provided with acoustic systems used to collect data which is then processed to determine geo-steering inputs. In some applications, the well string may comprise a coiled tubing drilling tool. The coiled tubing drilling tool or other well string tool is combined with an azimuthally distributed pitch-catch micro-sonic sensor system and an azimuthally distributed ultrasonic pulse-echo transducer system. Data from these two systems is provided to a processing system which processes the data to determine, for example, real-time, geo-steering inputs. These inputs may then be used to more effectively steer the coiled tubing drilling tool or other well string tool. 1. A system for facilitating a borehole drilling operation , comprising: a motor drill sub;', 'an orientor;', 'a measurement while drilling module to steer the steerable CTD tool while measuring system orientation based on magnetic field and gravity;', 'a telemetry module to communicate with a surface system using a communication cable;', an azimuthal pitch-catch sensor system positioned to obtain acoustic signals;', 'an azimuthal pulse-echo sensor system positioned to obtain acoustic signals; and', 'a controller module to process the acoustic signals, to extract attributes from the acoustic signals, and to transmit the attributes to the telemetry module; and, 'an acoustic logging while drilling tool comprising, 'a surface processing system which receives acoustic signal data from the controller module, the surface processing system using the acoustic signal data to control the steerable CTD tool and to enable formation evaluation., 'a steerable coiled tubing drilling (CTD) tool comprising2. The system as recited in claim 1 , wherein the azimuthal pitch-catch sensor system comprises a plurality of pitch-catch sensors claim 1 , each pitch-catch sensor having two transmitters and a ...

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Номер записи: 9
07-11-2019 дата публикации

Borehole Size Determination Downhole

Номер: US20190339411A1
Автор: Auchere Jean-Christophe, Dollfus Hadrien, VALERO HENRI-PIERRE
Принадлежит:

Methods and apparatus pertaining to determining shape and size of a borehole at a depth within a subterranean formation using ultrasonic measurements obtained by a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool. The measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location. The borehole shape and size are determined by estimating an ellipse approximating the borehole shape and size using the ultrasonic measurements. 1. A method comprising: taking ultrasonic measurements in the borehole with a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool, wherein the measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location at the depth; and', 'estimating an ellipse approximating the borehole shape and size using ultrasonic measurements obtained at least at four different azimuthal locations at the depth., 'determining shape and size of a borehole at a depth within a subterranean formation by2. The method of wherein the downhole tool estimates the ellipse.3. The method of wherein estimating the ellipse uses the ultrasonic measurements and an angular orientation measurement indicative of azimuthal orientation of the downhole tool within the borehole.4. The method of wherein:the ultrasonic measurements are obtained by an acquisition system carried by a downhole tool conveyed within the borehole;the acquisition system comprises at least four ultrasonic transducers; andthe ultrasonic measurements at each azimuthal location are obtained via operation of a different corresponding one of the ultrasonic transducers.5. The method of claim 4 , wherein the ultrasonic measurements are obtained simultaneously.6. The method of wherein the ...

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Номер записи: 10
14-12-2017 дата публикации

NON-CONTACT SYSTEM AND METHODOLOGY FOR MEASURING A VELOCITY VECTOR

Номер: US20170357021A1
Автор: Auchere Jean-Christophe, Nakajima Hiroshi, Ounadjela Abderrhamane, VALERO HENRI-PIERRE
Принадлежит:

A technique facilitates monitoring of acoustic signals to measure a velocity vector of a borehole. Acoustic sensors are arranged in a desired acoustic sensor array and positioned along a body of a tool, e.g. a sonic logging tool. The acoustic sensor array is then positioned in fluid along a wall of a borehole formed in a subterranean formation. The acoustic sensors are used to collect acoustic signal data while the acoustic sensors are maintained in a non-contact position with respect to the wall of the borehole. The data may be processed to determine the desired velocity vector. 1. A method for acoustic logging , comprising:providing an array of acoustic sensors along a logging tool;conveying the logging tool downhole into a borehole formed in a subterranean formation;locating the array of acoustic sensors at a non-contacting position with respect to a wall of the borehole; andusing the array of acoustic sensors to determine a velocity vector of the borehole based on data obtained by the array of acoustic sensors while in the non-contacting position.2. The method as recited in claim 1 , wherein using comprises processing the data to determine an orthogonal velocity claim 1 , a tangential velocity claim 1 , and an axial velocity.3. The method as recited in claim 1 , wherein providing the array of acoustic sensors comprises orienting acoustic sensors of the array of acoustic sensors on different planes of inclination relative to the wall of the borehole.4. The method as recited in claim 1 , wherein using comprises processing the data according to an analytical model based on Newtonian fluid laws.5. The method as recited in claim 1 , wherein using comprises processing the data according to an analytical model based on non-Newtonian fluid laws.6. The method as recited in claim 1 , wherein providing the array of acoustic sensors comprises providing an array of pressure sensors.7. The method as recited in claim 1 , wherein using comprises using the array of acoustic ...

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Номер записи: 11
14-11-2019 дата публикации

METHODS AND APPARATUS TO MEASURE FORMATION FEATURES

Номер: US20190345816A1
Автор: Auchere Jean-Christophe, Hori Hiroshi, Narasimhan Bharat, Pedrycz Adam
Принадлежит:

Methods, apparatus, systems, and articles of manufacture are disclosed to measure a formation feature. An example apparatus includes a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time. The example apparatus also include a semblance calculator to: calculate a correction factor based on a difference between the first measurement and the second measurement; and calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time. The example apparatus also includes a report generator to generate a report including the third measurement. 1. An apparatus , comprising:a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time; and calculate a correction factor based on a difference between the first measurement and the second measurement;', 'calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time; and, 'a semblance calculator toa report generator to generate a report including the third measurement.2. The apparatus of claim 1 , wherein the first sensor is disposed at a first position on the logging tool and the second sensor is disposed at a second position on the logging tool claim 1 , the first and the second positions separated by an axial offset.3. The apparatus of claim 1 , wherein the logging tool is a logging while measurement tool claim 1 , a measurement while drilling tool claim 1 , or a wireline logging tool.4. The apparatus of claim 1 , wherein at least one of the first sensor or the ...

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Номер записи: 12
28-12-2017 дата публикации

METHODS AND SYSTEMS FOR NON-CONTACT VIBRATION MEASUREMENTS

Номер: US20170371059A1
Автор: Auchere Jean-Christophe, Nakajima Hiroshi, Ounadjela Remi, Pibrac Alexis, VALERO HENRI-PIERRE
Принадлежит:

Methods and systems of measuring acoustic signals via a borehole wall are disclosed. One or more non-contact magneto-dynamic sensors are configured or designed for deployment at at least one depth in a borehole. The magneto-dynamic sensor comprises a coil excited by an electric current and a circuitry for outputting a signal corresponding to a time-varying impedance of the coil. A processor is configured to perform signal processing for deriving at least one of a magnitude or a frequency of vibration of the borehole wall based on the output signal from the circuitry. 1. A method of measuring acoustic signals via a borehole wall , comprising:deploying a non-contact magneto-dynamic sensor at at least one depth in a borehole, the magneto-dynamic sensor comprising a coil excited by an electric current and a circuitry for outputting a signal corresponding to a time-varying impedance of the coil; andderiving at least one of magnitude or frequency of vibration of the borehole wall based on the signal corresponding to the time-varying impedance.2. The method according to claim 1 , wherein the electric current supplied to the coil comprises a DC current.3. The method according to claim 1 , wherein the frequency of vibration is derived based on an imaginary part of a sinusoidal component of the time-varying impedance.4. The method according to claim 1 , wherein the magnitude of vibration is derived based on a real part of a sinusoidal component of the time-varying impedance claim 1 , at least one geometric parameter and at least one electromagnetic parameter in the space in which the magnetic field is formed.5. The method according to claim 4 , wherein the at least one geometric parameter includes at least one of a radius of the coil or a distance between a center of the coil and the borehole wall.6. The method according to claim 4 , wherein the at least one electromagnetic parameter includes an electrical conductivity of the borehole wall.7. The method according to claim 1 , ...

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Номер записи: 13
07-11-2023 дата публикации

Methods and apparatus to measure formation features

Номер: US11808143B2
Автор: Adam Pedrycz, Bharat Narasimhan, Hiroshi Hori, Jean-Christophe Auchere
Принадлежит: Schlumberger Technology Corp

Methods, apparatus, systems, and articles of manufacture are disclosed to measure a formation feature. An example apparatus includes a pre-processor to compare a first measurement obtained from a first sensor included in a logging tool at a first depth at a first time and a second measurement obtained from a second sensor included in the logging tool at the first depth at a second time. The example apparatus also include a semblance calculator to: calculate a correction factor based on a difference between the first measurement and the second measurement; and calculate a third measurement based on the correction factor and a fourth measurement obtained from the first sensor at a second depth at the second time. The example apparatus also includes a report generator to generate a report including the third measurement.

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Номер записи: 14
02-11-2023 дата публикации

Monitoring casing annulus

Номер: WO2023212270A1
Автор: Christopher Michaud, Dominique Sabina, Fabio Cecconi, Jean-Christophe Auchere, Vincent Chatelet
Принадлежит: Schlumberger Canada Limited, Schlumberger Technology B.V., SCHLUMBERGER TECHNOLOGY CORPORATION, Services Petroliers Schlumberger

An apparatus with a straddle packer for use within a wellbore. The straddle packer can include a tubular body comprising a first bore and a second bore and a first sealing element configured to seal against an inner surface of a casing installed within the wellbore. A second sealing element configured to seal against the inner surface of the casing, and the second bore can be located between the first sealing element and the second sealing element. An obstruction disposed in association with the tubular body, wherein the obstruction is movable between a first position in which the obstruction opens the second bore and a second position in which the obstruction closes the second bore.

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Номер записи: 15
20-05-2013 дата публикации

Disipacion termica en equipos en el fondo del pozo.

Номер: MX2012013176A
Автор: Alain Guelat, Florence Garnier, Jean-Christophe Auchere
Принадлежит: Schlumberger Technology Bv

Un ensamble de perforación puede incluir un alojamiento que tiene una superficie externa y una superficie interna, la superficie externa está adaptada para estar en contacto con un fluido en el fondo del pozo, la superficie interna define un volumen interior. Uno o más componentes productores de calor pueden estar colocados en el volumen interior y en contacto térmico con un componente estructural (por ej., chasis). Uno o más miembros de disipación térmica pueden estar colocados dentro del alojamiento, el o los miembros de disipación térmica están en contacto térmico con el chasis y en contacto térmico con la superficie interna del alojamiento.

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Номер записи: 16
19-11-2024 дата публикации

Monitoring casing annulus

Номер: US12146375B1
Автор: Christophe Michaud, Dominique Sabina, Fabio Cecconi, Jean-Christophe Auchere, Vincent Chatelet
Принадлежит: Schlumberger Technology Corp

An apparatus with a straddle packer for use within a wellbore. The straddle packer can include a tubular body comprising a first bore and a second bore and a first sealing element configured to seal against an inner surface of a casing installed within the wellbore. A second sealing element configured to seal against the inner surface of the casing, and the second bore can be located between the first sealing element and the second sealing element. An obstruction disposed in association with the tubular body, wherein the obstruction is movable between a first position in which the obstruction opens the second bore and a second position in which the obstruction closes the second bore.

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Номер записи: 17