PatentDe  


Dokumentenidentifikation EP1370891 29.01.2004
EP-Veröffentlichungsnummer 0001370891
Titel SONDE
Anmelder ABB Offshore Systems Ltd., Nailsea, Bristol, GB
Erfinder HAHEM, Svein, N-0266 Oslo, NO;
JONES, Hughes, Robert, Falmouth, Cornwall TR11 4SE, GB;
JAQUES, Steven, Paul, St Ives, Cornwall TR26 2DP, GB;
WASON, Will, Penzance, Cornwall TR18 2EP, GB
Vertreter derzeit kein Vertreter bestellt
Vertragsstaaten AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT
Sprache des Dokument EN
EP-Anmeldetag 24.09.2002
EP-Aktenzeichen 027650407
WO-Anmeldetag 24.09.2002
PCT-Aktenzeichen PCT/GB02/04317
WO-Veröffentlichungsnummer 0003027717
WO-Veröffentlichungsdatum 03.04.2003
EP-Offenlegungsdatum 17.12.2003
Veröffentlichungstag im Patentblatt 29.01.2004
IPC-Hauptklasse G01V 11/00
IPC-Nebenklasse E21B 23/04   G01V 1/52   

Beschreibung[en]

The present invention relates to sondes, such as seismic or microseismic sondes.

Systems for permanently installing a sonde against an inner wall of a pipe, such as the casing of a fluid extraction well, are known. Such systems are described in, for example, United States Patents Nos. 5,092,423, 5,181,565, 5,200,581, 5,111,903, 6,289,985 and 6,173,804. The first four patents describe arrangements in which the sonde is moved from a retracted position in a carrier to a position pressing against the wall but in all cases the sonde remains mechanically coupled to the carrier. The latter patent describes a system that includes a flexible element carrying a sonde, which element is restrained in a compressed state to allow the assembly to be lowered into a well casing. When the assembly has been positioned in the well as required, the flexible, resilient element is allowed to expand by the release of a locking mechanism that holds the element in its compressed state. At the same time, mechanical isolation is provided of the flexible element, and thus the sonde. The method of releasing the lock is to apply an overpressure within the well casing pipe, which operates a hydraulic ram to release it. This method of instigating the installation of this mechanical clamping of the sonde to the well casing has a number of disadvantages. Pressurising the space between the production tubing and the well casing is not a process preferred by production well installers. Other devices, such as packers, may also be installed, and modem practice is to 'inflate' such devices by means of pressurising the production tubing itself, and thus hydraulically connecting the packer setting mechanism to the production tubing, or to provide a separate hydraulic supply to 'inflate' them. Furthermore, this method of deploying a sonde to a well casing uses a mechanism to effect the release of the compressed flexible element in a switch-like action. Thus, there is no control of the placing of the sonde to the casing after release, thus imparting excessive shock to the sonde.

Expandable and compressible clamps suitable for installing sondes in wellbores are disclosed in US-B-6,378,607 and US-B-6,885,132.

According to the present invention from one aspect, there is provided a sonde comprising an expandable and/or resilient C-shaped member and at least one sensor, the member being compressible, or having been compressed, to bring its ends closer together, said sonde comprising :

  • a) means for supporting and locating the sonde inside the well prior to deployment; and
  • b) means for releasably compressing the C-shaped member so as to allow positioning of the sonde inside the well and subsequent deployment.

According to the present invention from another aspect there is provided a method of deploying a sonde against a well casing, said method comprising:

  • a) providing a sonde according to the first aspect of the present invention;
  • b) compressing the C-shaped member;
  • c) positioning the sonde at the desired location inside the well; and
  • d) releasing the C-shaped member thereby securing the sonde in place.

Examples of the invention utilise a sonde, in the form of an expandable "C"-shaped ring clamp, which lends itself to a method wherein the sonde is inserted into a production well by compressing the sonde about a length of production tubing or other carrier, and whereby deployment and mechanical isolation of the sonde from the carrier can then easily be achieved simply by releasing the compressing mechanism. Preferred examples of the invention utilise the pressure applied to production tubing for the installation of other devices, such as packers, or utilise an existing hydraulic supply, typically one used for installationonly, within a production well, to effect clamping of a sonde to the well casing.

By utilising such convenient hydraulic sources, in combination with a suitable deployment mechanism, the sonde can be deployed under control to avoid the mechanical shock that can result from the use of some existing systems.

The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:-

  • Fig. 1 illustrates, diagrammatically and not to scale, a mechanism for clamping a sonde to a well casing, in a 'loaded' state, prior to clamping;
  • Figs. 2, 3 and 4 illustrate alternatives to what is shown in Fig. 1;
  • Fig. 5 illustrates a clamping ring, housing seismic sensors and forming a sonde;
  • Fig. 6 shows the mechanism of Fig. 1 deployed to the casing wall;
  • Fig. 7 is a plan view of a C-shaped sonde according to a further embodiment of the present invention;
  • Fig. 8 is a sectional view taken along line X - X of Fig 7 in the direction shown;
  • Fig. 9 is a front view of an apparatus for deploying the sonde of Fig 7;
  • Fig. 10 is a sectional view taken along line Z - Z of Fig 9 in the direction shown;
  • Fig. 11 is a sectional view taken along line Y - Y of Fig 9 in the direction shown;
  • Fig. 12 is a front view of a sleeve forming part of the apparatus of Fig 9; and
  • Fig. 13 is a sectional view taken along line W - W of Fig 12 in the direction shown.

Referring to Fig. 1, well fluid production tubing 1 lies within a well casing 2. A clamping mechanism assembly comprises a cylinder 3 with hydraulic or gas rams 4, integral with an upper taper-ended cylinder 5, with ram output shafts 6 being connected to a lower taper-ended cylinder 7, the cylinders 5 and 7 retaining an expandable, resilient 'C'-shaped clamp ring 8 about tubing 1. Each ram 4 is a bore in the cylinder 5 with a piston 11 connected to the respective output shaft 6. The cylinders 5 and 7 each retains a respective circlip 17, the circlips 17 being fitted in grooves in the cylinder 3 in a compressed state. Each of the rams 4 is fed with either hydraulic fluid or gas from a pressurised source to operate the clamping mechanism.

In the illustration shown as Fig. 1, the hydraulic fluid or gas source that is pressurised to operate the clamping mechanism is supplied via pipes 9 from the production tubing 1.

Alternatively,as shown in Fig. 2, the hydraulic fluid or gas source may be the same one that feeds packers in the well, which are pressurised at installation to pump up their circumferential expandable sections to seal them to the well casing. In Fig. 2, a packer 10 is connected hydraulically (or via gas) to the production tubing 1 running through its centre, via an orifice (not shown) in the tubing wall internal to the packer, there being a tapping from the packer 10 to the pipes 9 to feed the rams 4.

As a further alternative, as shown in Fig. 3, the clamping mechanism may be operated by a separate hydraulic or gas feed via pipe 12, pressurised at installation.

As another alternative, as shown in Fig. 4, the packer 10 may be 'inflated' by a separate hydraulic or gas feed via pipe 13 which is tapped to feed the clamping mechanism via pipes 9.

Since the mode of operation is identical for all hydraulic or gas feed supply methods as per the above, Figs. 1, 5 and 6 will be used to describe further details of the operation of the clamping mechanism of each of the above examples.

Fig. 5 shows 'C'-shaped ring clamp 8, i.e. the sonde, in its expanded state. The ring clamp 8 houses as many seismic (e.g. microseismic) sensors 14, as are required to form the sonde and each circumferential end of the ring is tapered as shown at 15. This ring 8 is held in a compressed state by the tapered ends of the cylinders 5 and 7 which are forced together by compression springs 18 acting between the ends of the cylinders 5 and 7 and rings 19 attached to the ends of the cylinder 3.

The process of installation of the sonde is as follows:-

The clamping mechanism is 'loaded' by compressing the 'C'-shaped ring clamp 8 to bring its ends closer together, and holding it in this compressed state between the taper-ended cylinders 5 and 7. At the same time, the circlips 17 are also held in the compressed state by the cylinders 5 and 7. The 'loaded' clamping mechanism is lowered, along with other items that may also be installed at the same time, suchas packers, down the well with the production tubing 1 passing through the centre, until it is in the required position as shown in Fig. 1. Hydraulic or gas pressure is then applied, whereupon the hydraulic rams 4 force the cylinders 5 and 7 apart, against the further compression of the springs 18. This releases the 'C'-shaped ring clamp 8, housing the seismic sensors and making up the sonde, which thus expands to grip tightly the inside of the well casing 2. The forcing apart of the cylinders 5 and 7 also results in the release of the circlips 17. Release of the circlips 17 prevents the cylinders 5 and 7 being forced back together if the source hydraulic or gas pressure is removed after installation. This deployed state is illustrated in Fig. 6.

A gradual increase of the source pressure will cause the rams 4 to move the cylinders 5 and 7 slowly. As the ends of the clamp ring 8 and the cylinders 5 and 7 are tapered/chamfered, the slow movement of the cylinders 5 and 7 will allow the clamp ring 8 to expand slowly until it mates with the inner surface of the well casing 2. Thus, the deployment of the sonde is gentle and under control through the control of the pressure rise of the hydraulic or gas source, thus avoiding mechanical shock. The sonde is thus secured to the well casing and is also mechanically isolated from the production tubing.

At the same time as this deployment takes place, the rest of the packers if fitted and powered by the same source, are deployed.

During the deployment of the sonde (or sondes) its or their angular position(s) around the production tubing 1 may need to be adjusted. Thus, the pipes 9 (or pipes 9 and 12) may need to include a flexible element and the clamping mechanism will need to incorporate features in its design such as landing nipples, to allow the use of orientation tools, and orientation gauges, to effect adjustment of the rotation angle prior to deployment. Such features depend on the detail of the design and are thus not shown in the figures.

The above examples provide a method of deployment of the clamping mechanism that is intended to be permanent. However, a further advantage of the 'chamfered edge' feature of the invention is that removal of the clamping mechanism after deployment is possible. This is particularly useful if the clamping mechanism is deployed accidentally or in an incorrect position during installation. Referring to Fig. 6, removal of the clamping mechanism can be effected by simply moving the tubing 1 which causes the cylinders 5 and 7 to drag the sonde along the casing. Thus, the clamping mechanism, complete with the clamp ring 8 forming the sonde can be removed, be it somewhat forcibly.

In addition to or as an alternative to using fluid pressure to set the clamping mechanism, there is the possibility of using a wireline tool to set the mechanism. This may be required if for some reason it was not possible to pressurise the tubing 1. The procedure would be to deploy the or each clamping mechanism to its correct position in the well and then run in a wireline tool through the tubing that would engage in a special lock. Pulling the wireline tool would release the lock and thus set the clamping mechanism.

A further embodiment of a C-shaped sonde and an apparatus for its deployment will now be described with reference to Figures 7 to 13. This sonde 21 as shown in Figures 7 and 8, comprises an expandable, resilient C-shaped spring member 22 carrying a sensor vessel 23 at the end of one arm and a similarly sized dummy vessel 24 at the end of the other arm. Each of the vessels 23 and 24 is fitted into a respective vessel saddle 25, 26, through which they are attached to the ends of the C-spring member 22. Each vessel saddle is also fitted with an anchor 27, 28 positioned on the opposite side of the saddle from that attached to the C-spring member 22. The overall diameter of the sonde is such that compression of the C-spring member, by pressing the ends of the spring member towards one another, is required before the sonde can be inserted into a well casing in which it is to be deployed.

The sensor vessel 23 comprises four seismic sensors (not shown) housed in a cylindrical aluminium pod with the sensor axes aligned at 109.47 degrees to each other. The pod is in turn inserted into a cylindrical steel pressure vessel 29, the open end of which is fitted with a cap 30. Wires from the sensors are routed, along grooves machined in the outside of the pod, into the cap 30, and out through a high pressure tubing connection 31. The dummy vessel 24 contains no sensors and is attached to the C-spring member only for balance and symmetry.

Referring now to Figs. 9 and 10, the apparatus for deploying the sonde comprises a length of production well tubing 32, typically 1500mm in length and male threaded at both ends for insertion into the production tubing of a well and, which is provided with a sonde securing and deployment mechanism. This mechanism comprises a sonde supporting sleeve 33 that is rotatably mounted on the production tubing, and a sonde locking peg 34 driven by a piston 36 of a hydraulic cylinder 35 mounted on the production tubing 32 above the supporting sleeve 33. The locking peg 34 is forked at the end, with two tapered prongs, and is guidingly linked to the supporting sleeve 33 by means of a cam pin 37 on the peg 34 which pin 37 fits into a cam groove 38 machined on the outer surface of the sleeve 33.

The supporting sleeve 33 is shown in greater detail in Figs. 12 and 13, and, as can be seen in these figures, in addition to the cam groove 38 the sonde supporting sleeve 33 is provided with a pair of lower lugs 39 and upper lugs 40 for supporting the sonde. The bottom end of the cam groove is closed and is positioned between and just above the upper pair of lugs. From there, the groove extends upwards, initially vertically and then curving off to the side and up. The upper end of the groove is open.

Referring again to Figs. 9 and 10, in order to secure the sonde 21 to the length of production tubing 32 the sonde is positioned around the supporting sleeve 33 with the piston 36 fully extended such that the forked end of the locking peg 34 clamps the sonde anchors 27, 28 together, thereby compressing the C-spring member 22 around the supporting sleeve. In this position, the cam pin 37 of the locking peg 34 is at the bottom end of the cam groove 38 in the supporting sleeve, with the effect that the upper and lower pairs of lugs 39, 40 on the sleeve are positioned respectively above and below the sensor and dummy vessels 25 and 26. The sonde is thus firmly held against both lateral and rotational movement relative to the length of production tubing 32.

Having secured the sonde 21 to and about the length of production tubing 32, the sonde and tubing assembly can then be inserted into a well casing 42, with the overall diameter of the compressed C-spring sonde being less than that of the well casing as shown in Figure 11. Once inserted into the well casing, signals from the sonde sensors are relayed to the surface via a junction box 41 mounted on the production tubing and to which the leads within the high pressure tubing 31 from the sensor vessel 23 are connected.

Having positioned the sonde 21 and production tubing 32 assembly inside the well casing, deployment of the sonde 21 is effected by pressurising the hydraulic cylinder 35 such that the piston 36 and locking peg 34 are retracted. As the locking peg 34 retracts, the tapering of the peg prongs ensures that the clamping effect of the peg on the sonde anchors 27, 28 is gradually released. Thus, by controlling the speed at which the piston is retracted, the rate of expansion of the C-spring member 22 can be controlled, in order to prevent the sonde striking the well casing 42 with excessive force.

By the time the cam pin 37 on the locking peg 34 reaches the beginning of the sidewardly curved section in the cam groove 38 the locking peg has fully released the sonde anchors 37, 38, such that the now expanded C-spring member 22 firmly clamps the sonde 21 in place against the inner wall of the well casing 42. As the peg 34 continues to retract, the movement of the cam pin 37 along the curved section of the cam groove 38 causes the supporting sleeve 33 to rotate about the production tubing 32, which in turn brings the upper and lower pairs of lugs 39, 40 out of contact with the sensor and dummy vessels 23, 24. Complete mechanical isolation of the sonde from the production tubing is thereby achieved.


Anspruch[de]
Vorrichtung zum Entfalten eines Sensors gegen ein Bohrlochfutterrohr, wobei die Vorrichtung umfasst: eine Sonde, die ein ausdehnbares und/oder elastisches, C-förmiges Element und wenigstens einen Sensor umfasst, wobei das Element komprimierbar ist, um seine Enden näher zusammenzubringen; dadurch gekennzeichnet, dass die Vorrichtung außerdem umfasst: a) Mittel, um die Sonde in dem Bohrloch vor dem Entfalten zu unterstützen und anzuordnen; und b) Mittel, um das C-förmige Element freigebbar zu komprimieren, um so die Positionierung der Sonde in dem Bohrloch und ihre anschließende Entfaltung zu ermöglichen. Vorrichtung nach Anspruch 1, bei der die Sonde für eine Installation in einem Bohrlochfutterrohr vorgesehen ist und bei der das C-förmige Element gegen die Innenwand des Bohrlochfutterrohrs geklemmt werden kann. Vorrichtung nach Anspruch 1 oder 2, bei der der oder jeder Sensor einen seismischen oder mikroseismischen Sensor umfasst. Vorrichtung nach Anspruch 1, bei der die Mittel zum freigebbaren Komprimieren des C-förmigen Elements ein Werkzeug umfassen, das eine Oberfläche besitzt, die mit einer Oberfläche des C-förmigen Elements zusammenwirkt, um das C-förmige Element in einem komprimierten Zustand zu halten. Vorrichtung nach Anspruch 4, bei der die zusammenwirkenden Oberflächen so geformt sind, dass die Kompression und die Dekompression des C-förmigen Elements auf gesteuerte, allmähliche Weise bewerkstelligt werden können. Vorrichtung nach Anspruch 5, bei der das C-förmige Element an einem Umfang eine Fase besitzt und das Werkzeug eine angefaste Oberfläche besitzt, die auf die Fase einwirkt, um das C-förmige Element in einem komprimierten Zustand zu halten. Vorrichtung nach Anspruch 5, bei der das C-förmige Element einen oder mehrere Ankerabschnitte aufweist und das Werkzeug einen oder mehrere Zapfen, die mit dem einen oder den mehreren Ankerabschnitten in Eingriff gelangen können, umfasst. Vorrichtung nach einem der Ansprüche 1 bis 7, wobei die Vorrichtung Fluiddruck verwendet oder mit Fluiddruck verwendbar ist, der von einem Förderrohr oder von einer getrennten Druckquelle abgeleitet wird, um die Entfaltung der Sonde zu bewirken. Vorrichtung nach einem der Ansprüche 1 bis 8, die so beschaffen ist, dass das Entfalten der Sonde umkehrbar ist, so dass die Sonde entnommen werden kann. Vorrichtung nach Anspruch 9, bei der die Kompressionsmittel ferner so beschaffen sind, dass sie die einmal entfaltete Sonde komprimieren und auf diese Weise wiedergewinnen. Vorrichtung nach einem der Ansprüche 1 bis 10, bei der die Mittel für die Unterstützung der Sonde vor dem Entfalten ein Förderrohr umfassen, das in das Bohrlochfutterrohr eingeschoben werden kann oder eingeschoben ist. Vorrichtung nach Anspruch 11, bei der die Sonde in ihrem komprimierten Zustand wenigstens teilweise durch einen oder mehrere Ansätze unterstützt ist, die dem Förderrohr zugeordnet sind. Vorrichtung nach Anspruch 12, wobei die Vorrichtung ferner Mittel umfasst, die den einen oder die mehreren Ansätze von der Sonde lösen, nachdem die Sonde gegen das Bohrlochfutterrohr entfaltet worden ist. Vorrichtung nach Anspruch 13, bei der der eine oder die mehreren Ansätze an einer Hülse angeordnet sind, die an dem Förderrohr angebracht ist, wobei die Lösung des Eingriffs der Ansätze von der Sonde durch Drehen der Hülse um das Rohr bewerkstelligt wird. Vorrichtung nach Anspruch 13 oder 14, bei der die Mittel zum freigebbaren Komprimieren des C-förmigen Elements ferner so beschaffen sind, dass sie nach der Freigabe des C-förmigen Elements und der anschließenden Entfaltung der Sonde den Eingriff der Ansätze mit der Sonde lösen. Verfahren zum Entfalten einer Sonde gegen ein Bohrlochfutterrohr, wobei das Verfahren umfasst: a) Vorsehen einer Vorrichtung nach einem der Ansprüche 1 bis 4; b) Komprimieren des C-förmigen Elements; c) Positionieren der Sonde an dem gewünschten Ort in dem Bohrloch; und d) Freigeben des C-förmigen Elements, um dadurch die Sonde an ihrem Ort zu befestigen. Verfahren nach Anspruch 16, bei dem ein Fluiddruck, der entweder von einem Förderrohr oder von einer getrennten Druckquelle abgeleitet wird, verwendet wird, um die Sonde zu entfalten. Verfahren nach Anspruch 17, bei dem der Fluiddruck allmählich verwendet und gesteuert wird, um die Sonde allmählich zu entfalten.
Anspruch[en]
An apparatus for deploying a sensor against a well casing, said apparatus comprising: a sonde comprising an expandable and/or resilient C-shaped member and at least one sensor, the member being compressible to bring its ends closer together; characterised in that the apparatus additionally comprises : a) means for supporting and locating the sonde inside the well prior to deployment; and b) means for releasably compressing the C-shaped member so as to allow positioning of the sonde inside the well and subsequent deployment. An apparatus according to Claim 1, wherein the sonde is for installation in a well casing and wherein the said C-shaped member is clampable against the inner wall of the well casing. An apparatus according to Claim 1 or 2, wherein the or each sensor comprises a seismic or microseismic sensor. An apparatus according to Claim 1, wherein the means for releasably compressing the C-shaped member comprise a tool having a surface which co-operates with a surface of the C-shaped member to hold the C-shaped member in a compressed state. An apparatus according to Claim 4, wherein the co-operating surfaces are shaped such that compression and decompression of the C-shaped member can be effected in a controlled gradual manner. An apparatus according to Claim 5, wherein the C-shaped member has a chamfer at a circumference and the tool has a chamfered surface that acts on said chamfer to hold the C-shaped member in a compressed state. An apparatus according to Claim 5, wherein the C-shaped member comprises one or more anchor portions and the tool comprises one or more pegs adapted to engage said anchor portion or portions. An apparatus according to any of Claims 1 to 7, the apparatus employing or being employable with fluid pressure derived from production tubing or a separate pressure source to effect deployment of the sonde. An apparatus according to any of Claims 1 to 8, which is such that deployment of said sonde is reversible so that said sonde may be removed. An apparatus according to Claim 9, wherein the compressing means are further adapted to compress and thus retrieve said sonde once deployed. An apparatus according to any of Claims 1 to 10, wherein the means for supporting the sonde prior to deployment comprise production tubing for insertion or inserted into the well casing. An apparatus according to Claim 11, wherein the sonde is at least partially supported, in its compressed stated, by one or more lugs associated with the production tubing. An apparatus according to Claim 12, wherein the apparatus further comprises means for disengaging the lug or lugs from the sonde after the sonde has been deployed against the well casing. An apparatus according to Claim 13, wherein the lug or lugs are disposed on a sleeve mounted on the production tubing, disengaging of the lugs from the sonde being effected by rotation of the sleeve about the tubing. An apparatus according to Claim 13 or 14, wherein the means for releasable compressing the C-shaped member are further adapted, subsequent to the release of the C-shaped member and consequent deployment of the sonde, to disengage the lugs from the sonde. A method of deploying a sonde against a well casing, said method comprising: a) providing an apparatus according to any one of Claims 1 to 4; b) compressing the C-shaped member; c) positioning the sonde at the desired location inside the well; and d) releasing the C-shaped member thereby securing the sonde in place. A method according to Claim 16, wherein fluid pressure derived either from production tubing or a separate pressure source is used to deploy the sonde. A method according to Claim 17, wherein such fluid pressure is used and controlled gradually to deploy said sonde gradually.
Anspruch[fr]
Appareil destiné à déployer un capteur le long d'un blindage de puits, ledit appareil comprenant : une sonde comprenant un élément en forme de C extensible et/ou résilient et au moins un capteur, l'élément étant compressible afin d'amener ses extrémités plus près l'une de l'autre ; caractérisé en ce que l'appareil comprend de façon supplémentaire: a) des moyens pour supporter et localiser la sonde à l'intérieur du puits avant le déploiement ; et b) des moyens pour comprimer en le dégageant l'élément en forme de C de manière à permettre le positionnement de la sonde à l'intérieur du puits, puis son déploiement. Appareil selon la revendication 1, dans lequel la sonde est destinée à l'installation dans un blindage de puits et dans lequel ledit élément en forme de C est attachable le long de la paroi intérieure du blindage de puits. Appareil selon la revendication 1 ou 2, dans lequel le ou chaque capteur comprend un capteur sismique ou un capteur microsismique. Appareil selon la revendication 1, dans lequel les moyens pour comprimer en le dégageant l'élément en forme de C comprennent un outil ayant une surface qui co-opère avec une surface de l'élément en forme de C pour maintenir l'élément en forme de C dans un état comprimé. Appareil selon la revendication 4, dans lequel les surfaces co-opérantes présentent une forme telle que la compression et la décompression de l'élément en forme de C peuvent être effectuées d'une manière progressive contrôlée. Appareil selon la revendication 5, dans lequel l'élément en forme de C a un chanfrein à une circonférence et l'outil a une surface chanfreinée qui agit sur ledit chanfrein pour maintenir l'élément en forme de C dans un état comprimé. Appareil selon la revendication 5, dans lequel l'élément en forme de C comprend une ou plusieurs partie(s) d'ancrage et l'outil comprend un ou plusieurs taquet(s) de fixation adapté(s) pour s'engager dans ladite ou lesdites partie(s) d'ancrage. Appareil selon l'une quelconque des revendications 1 à 7, l'appareil employant ou pouvant être employé avec une pression de fluide dérivée d'une colonne de production ou d'une source de pression distincte pour effectuer le déploiement de la sonde. Appareil selon l'une quelconque des revendications 1 à 8, qui est tel que le déploiement de ladite sonde est réversible de sorte que ladite sonde puisse être retirée. Appareil selon la revendication 9, dans lequel les moyens de compression sont de plus adaptés pour comprimer et donc récupérer ladite sonde une fois déployée. Appareil selon l'une quelconque des revendications 1 à 10, dans lequel les moyens pour supporter la sonde avant le déploiement comprennent une colonne de production à insérer ou insérée dans le blindage de puits. Appareil selon la revendication 11, dans lequel la sonde est au moins partiellement supportée, dans son état comprimé, par une ou plusieurs saillie(s) associée(s) à la colonne de production. Appareil selon la revendication 12, dans lequel l'appareil comprend en outre des moyens de dégagement de la ou des saillie(s) de la sonde après que la sonde a été déployée le long du blindage de puits. Appareil selon la revendication 13, dans lequel la ou les saillie(s) est (sont) disposée(s) sur une douille montée sur la colonne de production, le dégagement des saillies de la sonde étant effectué par rotation de la douille autour de la colonne. Appareil selon la revendication 13 ou 14, dans lequel les moyens pour comprimer en le dégageant l'élément en forme de C sont de plus adaptés, suite à la libération de l'élément en forme de C et en conséquence au déploiement de la sonde, pour dégager les saillies de la sonde. Procédé de déploiement d'une sonde le long d'un blindage de puits, ledit procédé comprenant : a) prévoir un appareil selon l'une quelconque des revendications 1 à 4 ; b) comprimer l'élément en forme de C ; c) positionner la sonde à l'emplacement souhaité à l'intérieur du puits ; et d) libérer l'élément en forme de C pour fixer ainsi la sonde à sa place. Procédé selon la revendication 16, dans lequel la pression de fluide dérivée soit de la colonne de production, soit d'une source de pression distincte, est utilisée pour déployer la sonde. Procédé selon la revendication 17, dans lequel une telle pression de fluide est utilisée et contrôlée de manière progressive pour déployer progressivement lesdites sondes.






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A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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