Embodiments of the present disclosure include a system for positioning a sensor within a flow path of a wellbore annulus including a work string extending into the well bore annul us from a surface location. The system includes a moveable arm on the work string, the arm transitioning between a first radial location and a second radial location. The system further includes a bracket coupled to the arm, the bracket being pivotable about a pivot axis, wherein the bracket supports the sensor and transitions the sensor from a stored position to a deployed position.
E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
Embodiments of the present disclosure include a sensor deployment system with a first bulkhead arranged at a first end of a downhole tool, a second bulkhead arranged at a second end of the downhole tool, opposite the first end, a first pivot block arranged proximate the first bulkhead, a second pivot block arranged proximate the second bulkhead, and an arm rotatably coupled to the first and second pivot blocks at opposite ends of the arm, wherein rotation of at least a portion of the arm drives at least a portion of the arm radially outward from an axis of the downhole tool.
E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
Embodiments of the present disclosure include a deployment system including an actuator. The deployment system also includes an actuator arm coupled to the actuator. The deployment system further includes a crank rotatably coupled at a pivot point. The deployment system also includes a first link arm coupled to the actuator arm at a first end and the crank at a second end. The deployment system includes a second link arm coupled to the crank at a first end and a deployment arm at a second end, the second link arm transmitting rotational movement of the crank to the deployment arm.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
4.
OPTICAL SENSOR WITH APERTURE SEPARATING RADIATION SOURCE AND SENSING ELEMENT
A sensor for measuring a property comprises: a radiation source, a detector and a sensing element. The radiation source is operable to produce a radiation beam. The detector is provided with a detecting surface for receiving radiation and outputting a signal in dependence on the received radiation. An aperture extends through the detector from the detecting surface to an opposed surface. The sensing element is operable to receive radiation and to reflect at least a portion of the radiation so as to form a reflected radiation beam, one or more properties of the reflected radiation beam being dependent on one or more properties to be measured. The radiation source and the sensing element are disposed on opposite sides of the detector such that the radiation source is arranged to direct the radiation beam through the aperture to the sensing element and the sensing element is arranged to direct the reflected radiation beam to the detecting surface of the detector.
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
G01N 21/85 - Analyse des fluides ou solides granulés en mouvement
G01N 21/359 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge en utilisant la lumière de l'infrarouge proche
A mechanism for securing a fibre optic cable connector includes a base that has a connector recess and a lid that is removably attached to the base. The mechanism may be used to connect a first fibre optic cable with a second fibre optic cable in a downhole instrument or in a deployment cable connected to the downhole instrument.
E21B 47/135 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage par énergie électromagnétique, p.ex. gammes de fréquence radio utilisant des ondes lumineuses, p.ex. ondes infrarouges ou ultraviolettes
E21B 47/12 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage
A peak hold circuit configured for use in a downhole sensor includes a long tail pair circuit, a correction circuit, and a current mirror circuit. The current mirror circuit includes two current mirrors connected to a long tail pair formed by a first transistor and a second transistor. The current mirror also includes a first resistor and a second resistor connected to a third transistor. The first transistor is connected to a correction transistor of the correction circuit. The value of the first resistor is selected to be essentially equal to the same value as the second resistor so that when the long tail pair is balanced, the current flowing through a collector of the second transistor is equal to the current flowing through the first transistor, causing the correction transistor to switch off.
An energy storage system is disclosed. The energy storage system comprises an energy storage device arranged to operate above ambient temperature; a thermal insulator at least partially surrounding the energy storage device; and wherein heat losses from one or more other devices are received within the thermal insulator to provide heat energy to the energy storage device. Utilising heat losses from one or more other devices, such as associated electronic components, enables the energy storage device to be maintained at its elevated operational temperature for longer providing extended battery life. In the application of wireline logging, this results in more data log available per trip in a well.
H01M 10/659 - Moyens de commande de la température associés de façon structurelle avec les éléments par stockage de la chaleur ou chaleur tampon, p.ex. capacité calorifique, changements ou transitions de phase liquide-solide
F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en général; Appareils échangeurs de chaleur de régénération non couverts par les groupes ou
H01M 8/14 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Éléments à combustible; Leur fabrication Éléments à combustible avec électrolytes fondus
H01M 10/39 - Accumulateurs non prévus dans les groupes fonctionnant à haute température
F25B 27/02 - Machines, installations ou systèmes utilisant des sources d'énergie particulières utilisant la chaleur perdue, p.ex. chaleur dégagée par des moteurs à combustion interne
H01G 9/00 - Condensateurs électrolytiques, redresseurs électrolytiques, détecteurs électrolytiques, dispositifs de commutation électrolytiques, dispositifs électrolytiques photosensibles ou sensibles à la température; Procédés pour leur fabrication
8.
MULTIFUNCTION DOWNHOLE RELEASE TOOL MECHANISM WITH LOST MOTION
Presented is a system and method for disconnecting a plurality of wireline tools from a string of wireline tools while maintaining operation of the wireline tools remaining with the string of wireline tools. The disconnection is non-destructive and allows a reconnection of the disconnected tools after retrieval from the well. The system also enables testing of the disconnection mechanism before deploying the wireline tool string into the well.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
A pressure balancing device for a transducer is described. The pressure balancing device has a pressure transmission device such as a piston, bladder, diaphragm or bellows for example arranged, in use, to be exposed to a fluid such as a downhole well fluid. A fluid chamber having a hollow shaft is arranged to be acted on by the pressure transmission device. The cross-sectional area of the hollow shaft is arranged to be less than that of the pressure transmission device to reduce resistance forces. The hollow shaft may be a load transmission shaft which may be connected to a load sensor.
G01D 3/028 - Dispositions pour la mesure prévues pour les objets particuliers indiqués dans les sous-groupes du présent groupe pour atténuer les influences indésirables, p.ex. température, pression
E21B 47/06 - Mesure de la température ou de la pression
G01L 1/26 - Mesures auxiliaires prises, ou dispositifs utilisés en liaison avec le mesurage des forces, p.ex. pour empêcher l'influence des composantes transversales de la force, pour empêcher la surcharge
G01L 19/06 - Moyens pour empêcher la surcharge ou l'influence délétère du milieu à mesurer sur le dispositif de mesure ou vice versa
A load cell for a downhole load measuring tool is described. The load cell comprises a plurality of strain gauges arranged in a balanced array such as a Wheatstone Bridge. The array of strain gauges is provided in fluid which, in use, is at the same pressure as the surrounding downhole fluid. As the balanced array is at the same pressure as the surrounding fluid, there is no requirement to pressure calibrate the load cell. The load cell is preferably arranged to measure shear strain across the load cell.
E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire
A modulator is disclosed for creating a pressure pulse in a fluid-filled well. The modulator comprises a tool body on which a plurality of extendable arms (6) are mounted. The arms (6) may be retracted into a stowed position substantially adjacent the tool body, or may be extended to meet the wall of the borehole (2). The arms (6) are preferably resilient bowsprings that may be flexed outwards from the tool by means of an actuator pushing on at least one end of the springs. A flexible valve sleeve (5) or bag is suspended between the arms (6) and cooperates with a valve (4) mounted adjacent the sleeve on the tool body. The valve sleeve (5) creates a fluid-flow path through the valve (4), and in operation, the valve (4) closes one end of the valve sleeve (5) to create the pressure pulse. Sealing of the valve sleeve against the wall of the well is a result of the fluid pressure inflating the sleeve against the well wall. As a result, sealing takes place over an extended area of the bag and is dynamically responsive to changes in fluid flow or pressure.
E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p.ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble