EP0055675B1 - Verfahren und Vorrichtung zum Feststellen der Festfahrstelle eines Gestänges in einem Bohrloch - Google Patents

Verfahren und Vorrichtung zum Feststellen der Festfahrstelle eines Gestänges in einem Bohrloch Download PDF

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Publication number
EP0055675B1
EP0055675B1 EP81402090A EP81402090A EP0055675B1 EP 0055675 B1 EP0055675 B1 EP 0055675B1 EP 81402090 A EP81402090 A EP 81402090A EP 81402090 A EP81402090 A EP 81402090A EP 0055675 B1 EP0055675 B1 EP 0055675B1
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EP
European Patent Office
Prior art keywords
parts
detecting
anchoring
conduit
movements
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EP81402090A
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English (en)
French (fr)
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EP0055675A1 (de
Inventor
Jean-Michel Hache
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Services Petroliers Schlumberger SA
Schlumberger NV
Schlumberger Ltd USA
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Societe de Prospection Electrique Schlumberger SA
Schlumberger NV
Schlumberger Ltd USA
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Publication of EP0055675A1 publication Critical patent/EP0055675A1/de
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Publication of EP0055675B1 publication Critical patent/EP0055675B1/de
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes

Definitions

  • the invention relates to methods and devices used in soundings, for detecting the point of jamming of a column of rods in a sounding.
  • a conventional method for determining the depth of the pinch point is to apply twists and pulls to the column on the surface, and determine to what depth these deformations are transmitted.
  • a device is used which is lowered into the column at the end of a cable and placed at successive depths.
  • a conventional sticking point detection device described for example in US Patent No. 3,686,943 to WD Smith, comprises a body having an upper part and a lower part mounted so that they can be moved one by one. compared to each other. Upper and lower anchoring members mounted respectively on these upper and lower parts immobilize each of the body parts in two zones longitudinally spaced from the column. Electric motors controlled by the cable are used to separate and bring the anchoring members closer to the body. Detection means, mounted between the parts of the body, measure the relative movements between these parts when the column is elastically deformed by stresses applied on the surface.
  • An improved anchoring process described in U.S. Patent No. 4,104,911 (J.C. Lavigne and Y. Nicolas), involves first anchoring the upper part of the body. The lower part is then anchored after having released the cable tension.
  • the advantage of this process is that it does not compress the moving parts of the body for measurement. During this measurement, however, it is necessary that the two parts of the body be longitudinally in the contracted position in order to be able to move away from each other when applying pulls to the column of rods.
  • the apparatus generally comprises an elastic member or spring which applies a restoring force to the parts of the body to urge them towards each other.
  • This restoring force is opposed to the relative longitudinal movements between the two parts of the body during detection.
  • a first object of the invention is to minimize such a longitudinal restoring force during the measurement.
  • the apparatus For the detection of movements between the parts of the body, it is advantageous to use a sensor described in the prior French patent No. 24 81 737 and EP-A-39 278 (inventor P. Moutin), which provides two output signals, one independent of rotations and the other independent of longitudinal displacements between parts of the body.
  • the apparatus then comprises a reset system for placing the detection means in an initial angular position before the measurement. A complicated sequence of operations is necessary to order this reset.
  • the angular reset system comprises a spring, or any other elastic means, the restoring torque of which prevents rotation between the two parts of the body during detection.
  • a second object of the invention is to provide an automatic angular reset system that does not exhibit a restoring torque during the measurement.
  • a usual reset system is generally driven by a motor member which is specific to it and controlled separately.
  • Another object of the invention is a device, the resetting of which takes place automatically after anchoring of the lower part of the body.
  • the restoring force is applied beforehand between the second part of the body and a movable member coupled, before the anchoring step, to the first part of the body but disconnectable from the latter. After the anchoring step, this member is decoupled from the first part of the body to decouple the restoring force from the first part.
  • a device for detecting the point of jamming of the rods in a borehole comprises a body adapted to be suspended from a cable and having two parts mounted movable relative to each other. Each part can be anchored inside the rods by a surface control and means detect the relative movements between said parts when the rods are deformed by applying them on the surface of the constraints. Return means are provided to apply to the body parts a longitudinal return force which biases them towards each other.
  • a device of this type is already known from US-A-41 04911.
  • disconnectable connecting means which connect the return means to a first of said body parts are decoupled by motor means after anchoring of the two parts inside the rods in order to suppress the application of the restoring force between said parts during detection.
  • the connecting means preferably comprise a member mounted movable between a first position connected to the first part of the body and a second position decoupled from the first part.
  • the return means are arranged between the second part and this member to urge this member towards the first position and then apply the return force to the first part of the body.
  • the drive means arranged in the second part of the body, move the movable member to the second position to decouple this member from the first part.
  • the movable member is preferably blocked relative to the second part of the body in the second position and decoupled from this second part in the first position.
  • the detection means are arranged on this member and the first part of the body to be sensitive to angular movements between this member and the second part.
  • Reset means place the movable member relative to the first part of the body when this member is in the first position so that the angular detection means are substantially at zero.
  • the reset means comprise oblique ramps for placing the sleeve in the zero position under the action of the return means.
  • Longitudinal movement detection means are preferably arranged on said movable member and the first part of the body to detect longitudinal extension movements between this first part and this member.
  • the drive means are adapted to anchor the lower part of the body in the rods before moving the sleeve towards the second position.
  • a jamming point detection device comprises a bottom device 10 suspended in a column of rods 11 at the end of a cable 12.
  • the rods 11 disposed in a borehole 13 are trapped by the terrain formations at a point 14 whose depth is to be determined.
  • the rods are suspended on the surface in a known manner from a drilling tower (not shown) equipped with mechanisms making it possible to apply tensile and torsional forces to these rods.
  • the cable 12 comprises one or more electrical conductors connected to a surface device 15. This device is suitable for sending an electrical supply current and electrical control signals to the downhole device and for receiving the signals coming from this device. to process, display and save them.
  • the downhole apparatus 10 generally comprises an electronic section 20 formed by a sealed envelope containing electronic circuits, and a mechanical section 21. At the bottom of the mechanical section is fixed a support 22 adapted to receive an explosive as for example several lengths of detonating cord intended to be ignited at a selected joint of the rods. The purpose of this explosion is to unscrew all of the rods located above the joint selected during an operation called "back off" by specialists.
  • the mechanical section 21 comprises a body produced in two parts 23 and 24 mounted movable relative to one another with limited displacements longitudinally and angularly. Each part is equipped with several anchoring arms such as 25 for the upper part and 26 for the lower part. The anchoring arms are articulated on the body and can be moved apart by a surface control to come to anchor inside the rods.
  • the mechanical section is shown in more detail in Figures 2A and 2B.
  • the sealed envelope 30 of the electronic section is fixed by a threaded ring 31 to the upper part 23 of the body.
  • the electrical connections between the electronic and mechanical sections are provided by plug-in connectors 32 which pass through a sealed and isolated head 33 fixed in the upper part 23 of the body.
  • a first chamber 35 below the head 33 is made inside the upper part 23 of the body.
  • the chamber 35 is filled with a hydraulic fluid maintained substantially at the prssion of the borehole as will be seen later.
  • a bore 36 in which is slidably mounted an actuating rod 37 fitted with an O-ring 38.
  • the part 23 of the body carries cutouts 40 adapted to receive three arms d anchor 25 mounted to rotate about pivots 41.
  • On each anchoring arm is mounted rotating a pin 42 which engages in a transverse groove of the actuating rod 37 so that a longitudinal movement of this rod rotates the arms around pivots 41.
  • the actuating rod 37 crosses at its lower part a longitudinal bore 43 produced in part 23 of the body.
  • An O-ring 44 mounted on this rod, seals this crossing.
  • the rod 37 thus enters a second chamber 45 which communicates with the first 35 via a longitudinal passage 46 produced in the axis of the rod 37.
  • a housing 46 which contains motor members for longitudinally moving the actuating rod 37.
  • an assembly 50 formed by an alternating current motor and a reduction gear.
  • the gear unit output shaft is connected by an Oldham seal 51 to a ball bearing 52 and then to a ball screw 53.
  • the nut element of the ball screw 53 is fixed to the enlarged lower end of the actuating rod 37.
  • the chamber 45 communicates with the interior of the housing through a passage 54, so that the free spaces are occupied by hydraulic fluid which bathes the motor 50, the stop 52 and the ball screw 53. Passages are provided between the housing 47 and the body to allow the wiring of the electrical conductors from the connectors 32 to the bottom of the chamber 45.
  • the body comprises an axial tube 54 the interior of which communicates with the chamber 45.
  • the body also has a cylindrical wall 55 around the tube 54 so as to delimit an annular chamber 56 in which a floating piston 57 slides, pressure equalizer.
  • the annular chamber 56 filled with hydraulic fluid, communicates with the interior of the tube 54 by a passage 60.
  • the underside of the piston 57 is in contact with the probing fluids by a passage 61.
  • the seal between the piston and the tube 54 is produced by a seal 62 and that between the piston and the cylindrical wall 55 by a seal 63.
  • the upper part 23 of the body extends downwards, below the annular chamber 56, by a mandrel 65 which penetrates into the lower part 24 of the body.
  • a seal 66 seals between this lower part 24 and an annular end 67 of the upper part 23.
  • the lower part 24 of the body can move away and rotate relative to the annular end 67 at the level of the shoulder 59 In the lower part 24.
  • a sleeve 70 is movably mounted between a high position (FIG. 2B) and a low position (FIG. 4).
  • the mandrel 65 is pierced with an axial channel 68 which places the chamber 45 in communication with the interior of the tube 54 with another chamber 69 produced in the lower part of the body.
  • Channel 68 also serves as a passage for electrical conductors.
  • FIG. 2B is a section along line 5-5 of FIG. 3.
  • diametrically opposed lugs 72 having two sides parallel to the longitudinal direction and a upper edge in an inverted V shape.
  • windows 73 having oblique ramps at their upper part.
  • the pins 72 are placed in the windows 73, the dimensions of which are chosen to allow, in the upper position of the sleeve, limited movements longitudinally and angularly, of the mandrel 65 relative to the sleeve 70.
  • the upper edges of the pins 78 and windows 73 form ramps which immobilize the sleeve 70 downwards in a first position angularly corresponding to the zero of the angular detection means.
  • the sleeve has an upper part of smaller diameter around which is placed a helical spring 74 mounted in compression between this sleeve and a shoulder 75 of the lower part of the body.
  • a helical spring 74 mounted in compression between this sleeve and a shoulder 75 of the lower part of the body.
  • the apparatus includes means for detecting longitudinal and angular movements between the sleeve and the mandrel.
  • These detection means include two differential transformers.
  • a first transformer with axial coils comprises a primary 80 fixed to the mandrel and a secondary formed by two coils 81 and 82 fixed to the sleeve. This first transformer detects longitudinal movements between parts of the body while being insensitive to angular movements.
  • a second transformer with radial coils comprising a primary 83 fixed to the mandrel and a secondary formed by two coils 84 and 85 fixed to the sleeve, detects angular movements but is insensitive to longitudinal movements between the parts of the body.
  • the primary 80 of the first transformer is centered between the two coils 81 and 82 of the secondary as shown in FIG. 2B.
  • the primary 83 of the second transformer has its axis perpendicular to that of the coils 84 and 85 of the secondary.
  • the sleeve and the mandrel are placed before the measurement in this initial position by the interaction of the pins 72 and the windows 73.
  • a housing 86 containing driving members is slidably mounted in the lower part 24 of the body below the sleeve 70.
  • the interior of the housing communicates with the chamber 69 through a passage 88.
  • an assembly 87 constituted by a alternating current electric motor and a reducer.
  • the output shaft 90 of the reducer mounted rotatably in the housing by a ball bearing 91, is connected to the threaded shaft of a ball screw 92.
  • the nut member of the ball screw 92 is fixed to a actuating rod 93 which leaves the housing 86 and passes through a transverse partition 94 of the body closing down the chamber 69 filled with hydraulic fluid.
  • the seal between the actuating rod 93 and the transverse partition 94 is ensured by a seal 95.
  • the body has cutouts 96 in which are arranged three anchoring arms 26 articulated on pivots 97.
  • the actuating rod 93 passes through a bore 100 made in the axis of the body to open into a chamber 101.
  • a seal 102 seals between the rod 93 and the body.
  • the actuating rod has a triangular cross section with three transverse grooves 103.
  • On each anchoring arm 26 is mounted rotating a pin 104 having a projecting rib which engages in one of the grooves 103.
  • the motor-reduction unit can be supplied with electric current so as to move the actuating rod 93, either downwards or upwards, relative to the housing 86.
  • a longitudinal channel 105 cut out in the actuating rod 98 communicates the chamber 69 with the chamber 101.
  • An electrical conductor placed in the channel 105 is connected to a connector 106 mounted in an isolated and sealed manner at the bottom of the lower part 24 of the body. On this end is fixed by screws 107 the upper part 108 of the support 22 of explosives.
  • An electric detonator (not shown) for igniting this explosive is connected to connector 106.
  • the bottom device 10 To perform a jamming point measurement, first connect the bottom device 10 to the cable 12 in order to lower it into the rods 11.
  • the upper 25 and lower 26 anchoring arms are closed and the various members contained. in the lower part of the body are in the position shown in FIG. 4.
  • the housing 86 In particular, the housing 86 is in bottom abutment against the transverse partition 94.
  • the actuating rod 93 in the high position in the housing 86, keeps the lower anchoring arm 26.
  • the sleeve 70 pushed back by the spring 74, is in the low position, immobilized by the pins 72 which bear on the top of the windows 73.
  • the angular motion detector formed by the coils 83, 84 and 85 is thus placed in its angular position of zero.
  • the spring 74 also applies to the lower part of the body an ascending restoring force which maintains the two parts 23 and 24 in the retracted position.
  • the apparatus 10 is then lowered into the borehole to a first depth where it is desired to determine whether the rods are free.
  • the motor 50 is supplied with current (FIG. 2A), so as to separate the upper anchoring arms 25.
  • the motor 50 After anchoring of the upper part of the body 23 and after having released the tension of the cable 12, running the motor 87.
  • the lower anchoring arms move away from the body until they bear against the internal wall of the rods 11.
  • the housing 86 rises slightly in the lower part of the body until it comes to bear on the bottom of the sleeve 70.
  • the lateral force of application of the anchoring arms 26 is determined by the longitudinal return force of the spring 24, transmitted by the sleeve 70 and the housing 86 to the actuating rod 93.
  • the anchoring arm 26 having reached their maximum spacing in the rods, stop the movement of the actuating rod 93 relative to the lower part 24 of the body.
  • the housing 86 moves upward, causing the sleeve 70 which compresses the spring 74. This movement continues until the upper end of the sleeve 70 comes to bear against the shoulder 75. The sleeve 70 is then locked in the high position in the lower part 24 of the body. During this movement, the oblique contact surfaces of the windows and the pins move away from each other, which decouples the connection between the sleeve 70 and the mandrel 65. With respect to the mandrel 65, the sleeve 70, blocked at this instant in the lower part 24 of the body, is free to move with limited movements angularly to the right or to the left and longitudinally in extension.
  • FIG. 2B This upper position of the sleeve, for which the angular and longitudinal detection means are substantially at zero, is shown in FIG. 2B.
  • the device is then ready to carry out a measurement, that is to say to detect movements between the parts of the body when tensile or torsional stresses are applied to the rods at the surface.
  • the motors 87 and 50 are supplied with current to close the upper and lower anchoring arms.
  • the bottom device can then be moved using the cable 12 to carry out other measurements at different depths.
  • the sleeve 70 is held on the mandrel 65 in a low position for which the angular movement detector is substantially at zero.
  • the longitudinal movement detector indicates a maximum elongation.
  • the coil 80 is offset upwards by a distance d from the midpoint of the coils 81 and 82.
  • the sleeve 70 After anchoring of the two parts of the body, the sleeve 70 is brought, relative to the mandrel, in its high position which, angularly, is not modified from the previous low position. For this position, the longitudinal movement detector is substantially at zero. From this position, the sleeve 70 secured to the lower part of the body is decoupled from the upper part. Any restoring force tending to oppose longitudinal or angular movements between the parts of the body is eliminated during the measurement. In addition, the indication provided by the longitudinal movement detector when the device is anchored can be followed on the surface to ensure that it functions properly.
  • the detection means can be produced in a form different from the electromagnetic sensor described above.

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  • Geology (AREA)
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  • Engineering & Computer Science (AREA)
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  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
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  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Claims (18)

1. Verfahren zum Bestimmen des Klemmpunktes von Stangen (11) in einer Bohrung (13) mit den folgenden Schritten:
- Ablassen in die Stangen (11) eines Gerätes, umfassend einen Körper (21 ) aus zwei Teilen (23, 24), die relativ zueinander geweglich sind und mormalerweise aufeinanderzu vorgespannt sind durch eine Rückstellkraft (74),
- Verankern jedes der genannten Teile (23, 24) im Inneren der Stangen (11) durch ein von der Oberfläche kommendes Kommando, und
- Bestimmen mittels Erfassungsmitteln (80 bis 85) der Relativbewegungen zwischen den genannten Teilen bei Deformieren der Stangen (11) unter Einwirkenlassen von Belastungen an der Oberfläche, dadurch gekennzeichnet, dass es zusätzlich den folgenden Schritt umfasst:
- Entkoppeln der Rückstellkraft (74) von dem ersten der genannten Teile (23) des Körpers nach dem Verankerungsschritt und vor dem Bestimmungsschritt, um die Einwirkung dieser Kraft (74) zwischen den genannten Teilen (23, 24) während der Erfassung zu unterdrücken.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
- Einwirkenlassen der Rückstellkraft (74) zwischen dem zweiten Teil (24) und einem beweglichen Organ (70), das vor dem Verankerungsschritt an das genannte erste Teil (23) des Körpers angekuppelt, jedoch von dem genannten ersten Teil (23) lösbar ist, und
- Abkoppeln des genannten Organs (70) von dem ersten Teil (23) des Körpers nach dem Verankerungsschritt zum-Entkuppeln der Rückstellkraft (74) von dem ersten Teil (23).
3. Verfahren nach Anspruch 2, wobei die Erfassungsmittel (81 bis 85) Mittel zum Erfassen von Winkelbewegungen (83, 84, 85) zwischen den genannten Teilen (23, 24) umfassen, dadurch gekennzeichnet, dass es zusätzlich die folgenden Schritte umfasst:
- vor dem Verankerungsschritt werden die Winkelerfassungsmittel (83, 84, 85) von einem zweiten der genannten Teile (23,24) des Körpers in einer Nullposition entkoppelt gehalten, und
- Koppeln der Winkelfassungsmittel mit dem genannten zweiten Teil (24) nach dem Verankerungsschritt und vor dem Erfassungsschritt ohne wesentliche Änderung der Nullposition der genannten Erfassungsmittel (83, 84, 85).
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass es zusätzlich die folgenden Schritte umfasst:
- Erfassen mittels der Erfassungsmittel (81, 82, 83) der Relativbewegungen zwischen dem ersten Teil (23) des Körpers und dem genannten Organ (70), das vor dem Verankerungsschritt von dem genannten zweiten Teil (24) des Körpers entkoppelt ist,
- Halten des genannten Organs (70) relativ zu dem genannten ersten Teil (23) in einer Nullposition vor den Verankerungsschritt und
- Koppeln des genannten Organs (70) mit dem zweiten Teil (24) des Körpers nach dem Verankerungsschritt unter Entkopplung von dem ersten Teil (23), um durch die Erfassungsmittel (81 bis 85) die Bewegung zwischen den beiden Teilen (23, 24) des Körpers zu erfassen.
5. Gerät zum Erfassen des Verklemmungspunktes von Stangen (11) in einem Bohrloch (13), umfassend:
- einen an einem Kabel (12) ablassbaren Körper (10) mit zwei relativ zueinander beweglichen Teilen (23, 24), wobei jedes Teil im Inneren von Stangen (11) mittels eines von der Oberfläche kommenden Kommandos verankerbar ist,
- Mittel (80 bis 85) zum Erfassen von Relativbewegungen zwischen den genannten Teilen (23, 24), wenn man die Stangen (11) durch Einwirkenlassen von Belastungen von der Oberfläche her deformiert, und
- Rückstellmittel (74), die in dem Körper angeordnet sind zum Einwirkenlassen auf die genannten Teile (23, 24) des Körpers einer Längsrückstellkraft, welche die beiden Teile normalerweise aufeinanderzu vorspannt, dadurch gekennzeichnet, dass es darüberhinaus umfasst:
- lösbare Verbindungsmittel (65, 70) zum Verbinden in Längsrichtung der Rückstellmittel (74) mit einem ersten der genannten ersten Teile (23, 24) des Körpers, und
- Motormittel (87, 92, 86), die in dem Körper angeordnet sind zum Entkoppeln der Verbindungsmittel (65, 70) von dem ersten Teil (23) des Körpers nach Verankerung der beiden Teile (23, 24) im Inneren von Stangen (11), um das Einwirken der Rückstellkraft (74) zwischen den genannten Teilen (23, 24) während der Erfassung von Relativbewegungen zu unterdrücken.
6. Gerät nach Anspruch 5, dadurch gekennzeichnet, dass die genannten Verbindungsmittel (65, 70) umfassen:
- ein Organ (70), das beweglich montiert ist zwischen einer ersten Position, verbunden mit dem genannten ersten Teil (23) des Körpers und einer zweiten von dem genannten ersten Teil (23) entkoppelten Position, wobei die genannten Rückstellmittel (74) zwischen dem zweiten Teil (24) des Körpers und dem genannten Organ (70) angeordnet sind, um das genannte Organ (70) in die erste Position vorzuspannen und die Rückstellkraft (74) zwischen dem genannten ersten und zweiten Teil (23, 24) einwirken zu lassen, wenn das genannte Organ (70) in der ersten Position ist.
7. Gerät nach Anspruch 6, dadurch gekennzeichnet, dass die genannten Motormittel (87, 92, 86), angeordnet in dem zweiten Teil (24) des Körpers, ausgebildet sind zum Verlagern des genannten Organs (70) in die zweite Position, um das genannte Organ (70) von dem ersten Teil (23) zu entkoppeln.
8. Gerät nach Anspruch 7, dadurch gekennzeichnet, dass das genannte Organ (70) relativ zu dem genannten zweiten Teil (24) in der zweiten Position blockiert ist und entkoppelt ist von dem genannten zweiten Teil (24) in der ersten Position, und
- die Erfassungsmittel (80 bis 85) auf dem genannten Organ (70) und dem genannten ersten Teil (23) des Körpers angeordnet sind, um empfindlich zu sein gegenüber Bewegungen zwischen dem genannten Organ (70) und dem ge- 'nannten ersten Teil (23).
9. Gerät nach Anspruch 8, dadurch gekennzeichnet, dass die genannten Erfassungsmittel (80 bis 85) Winkelerfassungsmittel (83 bis 85) umfassen, empfindlich gegenüber Winkelbewegungen zwischen dem genannten Organ (70) und dem genannten ersten Teil (23), und dass es darüberhinaus umfasst:
- Nullrücksetzmittel (72, 73) für die Winkelplazierung des genannten Organs (70) relativ zu dem ersten Teil (23) in eine Nullposition der genannten Winkelerfassungsmittel (83 bis 85), wenn das genannte Organ (70) in der Position ist.
10. Gerät nach Anspruch 9, dadurch gekennzeichnet, dass die Nullrücksetzmittel Kontaktflächen (73, 78) zwischen dem genannten Organ (70) und dem ersten Teil (23) des Körpers umfassen, wobei mindestens eine der genannten Kontaktflächen (73, 78) schräge Rampen umfasst zum Plazieren des genannten Organs (70) unter der Wirkung der Rückstellmittel (74) in die genannte Nullposition relativ zu dem ersten Teil (23) des Körpers.
11. Gerät nach Anspruch 10, dadurch gekennzeichnet, dass es eine in dem zweiten Teil (24) des Körpers ausgebildete Schulter (75) umfasst, damit die genannten Motormittel (87, 92, 86) das genannte Organ (70) in der genannten zweiten Position gegen die genannte Schulter (75) unbeweglich machen.
12. Gerät nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die genannten Winkelbewegungserfassungsmittel (83, 84, 85) einen Transformator umfassen mit radialen Spulen, die Primärwicklungen (83) und Sekundärwicklungen (84, 85) haben, eine an dem ersten Teil (23) des Körpers befestigt und die andere an dem genannten Organ (70).
13. Gerät nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass die Erfassungsmittel (80 bis 85) Längsbewegungserfassungsmittel (80, 81, 82) umfassen, empfindlich gegenüber Längsbewegungen zwischen dem genannten ersten Teil (23) und dem genannten Organ (70), um Verlagerungen des genannten Organs (70) anzuzeigen, hervorgerufen durch die genannten Motormittel (87, 92, 86).
14. Gerät nach Anspruch 13, dadurch gekennzeichnet, dass die genannten Längsbewegungserfassungsmittel (80, 81, 82) einen Transformator umfassen mit Axialspulen, die eine Primärwicklung (80) und Sekundärwicklungen (81, 82) haben, eine an dem ersten Teil (23) des Körpers befestigt und die andere an dem genannten Organ (70).
15. Gerät nach einem der Ansprüche 7 bis 14, dadurch gekennzeichnet, dass die genannten Motormittel (87, 92, 93) zum Verankern des unteren Teils (24) des Körpers in den Stangen (11) vor dem Verlagern des genannten Organs (70) in Richtung auf die zweite Position ausgebildet sind.
16. Gerät nach Anspruch 15, dadurch gekennzeichnet, dass die genannten Motormittel (87, 92) zwei Betätigungselemente (86, 93) umfassen, beweglich montiert im zweiten Teil (24) des Körpers und in Längsrichtung voneinander entfernbar, wobei das eine der genannten Elemente
(93) ausgebildet ist zum Betätigen von Verankerungsarmen, angelenkt am zweiten Teil (24) des Körpers, um sie vom Körper abzuspreizen und im Inneren der Stangen (11) zu verankern, und das andere der genannten Elemente (86) ausgebildet ist zum Verlagern des genannten Organs (70) von der ersten in die zweite Position.
17. Gerät nach einem der Ansprüche 7 bis 16, dadurch gekennzeichnet, dass das erste und das zweite Teil (23, 24) des Körpers das Oberteil bzw. das Unterteil des Körpers bilden, wobei die genannten Motormittel (87, 92) ausgebildet sind zum Verlagern des genannten Organs (70) nach Verankerung des unteren Teils (24) des Körpers.
EP81402090A 1980-12-31 1981-12-30 Verfahren und Vorrichtung zum Feststellen der Festfahrstelle eines Gestänges in einem Bohrloch Expired EP0055675B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8027868 1980-12-31
FR8027868A FR2497266A1 (fr) 1980-12-31 1980-12-31 Dispositif pour detecter le point de coincement des tiges dans un sondage

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EP0055675A1 EP0055675A1 (de) 1982-07-07
EP0055675B1 true EP0055675B1 (de) 1985-03-20

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EP81402090A Expired EP0055675B1 (de) 1980-12-31 1981-12-30 Verfahren und Vorrichtung zum Feststellen der Festfahrstelle eines Gestänges in einem Bohrloch

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US (1) US4402219A (de)
EP (1) EP0055675B1 (de)
JP (1) JPS57135310A (de)
AU (1) AU547081B2 (de)
BR (1) BR8107932A (de)
CA (1) CA1163190A (de)
DE (1) DE3169492D1 (de)
EG (1) EG14815A (de)
FR (1) FR2497266A1 (de)
IE (1) IE52218B1 (de)
IN (1) IN157830B (de)
MX (1) MX158744A (de)
NO (1) NO155635C (de)
OA (1) OA06977A (de)
PH (1) PH19566A (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515010A (en) * 1983-03-25 1985-05-07 Nl Industries, Inc. Stuck point indicating device with linear sensing means
US4708204A (en) * 1984-05-04 1987-11-24 Nl Industries, Inc. System for determining the free point of pipe stuck in a borehole
DE3605036A1 (de) * 1985-04-10 1986-10-16 Gerd 3167 Burgdorf Hörmansdörfer Verfahren und vorrichtung zum bestimmen des verklemmungspunktes eines stranges in einem bohrloch
US5375476A (en) * 1993-09-30 1994-12-27 Wetherford U.S., Inc. Stuck pipe locator system
US7383876B2 (en) * 2001-08-03 2008-06-10 Weatherford/Lamb, Inc. Cutting tool for use in a wellbore tubular
US6851476B2 (en) * 2001-08-03 2005-02-08 Weather/Lamb, Inc. Dual sensor freepoint tool
US7389183B2 (en) * 2001-08-03 2008-06-17 Weatherford/Lamb, Inc. Method for determining a stuck point for pipe, and free point logging tool
US7195069B2 (en) * 2003-06-26 2007-03-27 Weatherford/Lamb, Inc. Method and apparatus for backing off a tubular member from a wellbore
US7004021B2 (en) * 2004-03-03 2006-02-28 Halliburton Energy Services, Inc. Method and system for detecting conditions inside a wellbore
US7252143B2 (en) * 2004-05-25 2007-08-07 Computalog Usa Inc. Method and apparatus for anchoring tool in borehole conduit
JP5153534B2 (ja) * 2008-09-16 2013-02-27 株式会社ハーモニック・ドライブ・システムズ 掘削装置のドリルビットシャフト構造
US20110198099A1 (en) * 2010-02-16 2011-08-18 Zierolf Joseph A Anchor apparatus and method
CN104280002B (zh) * 2014-10-31 2017-02-08 江苏楷正建设有限公司 钻杆的直线度检测台
CN106351646B (zh) * 2016-09-23 2020-03-24 北京信息科技大学 一种装有光纤光栅传感装置的井下测卡系统
NO343697B1 (en) * 2017-05-23 2019-05-13 Altus Intervention Tech As Method and apparatus for performing a survey of tubing which is stuck in a borehole, e.g. for determining a free point

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095736A (en) * 1959-10-21 1963-07-02 Houston Oil Field Mat Co Inc Stuck pipe locator
US3686943A (en) * 1970-12-10 1972-08-29 Go Intern Inc Measuring apparatus for attaching to a conduit in a borehole
US3994163A (en) * 1974-04-29 1976-11-30 W. R. Grace & Co. Stuck well pipe apparatus
FR2365687A1 (fr) * 1976-09-28 1978-04-21 Schlumberger Prospection Procede et dispositif pour determiner le point de coincement d'une colonne dans un forage
FR2481737A1 (fr) * 1980-04-30 1981-11-06 Schlumberger Prospection Dispositif pour detecter le point de coincement des tiges dans un sondage

Also Published As

Publication number Publication date
FR2497266A1 (fr) 1982-07-02
BR8107932A (pt) 1982-09-14
AU547081B2 (en) 1985-10-03
CA1163190A (en) 1984-03-06
DE3169492D1 (en) 1985-04-25
EG14815A (en) 1985-03-31
US4402219A (en) 1983-09-06
EP0055675A1 (de) 1982-07-07
AU7837981A (en) 1982-07-08
NO155635B (no) 1987-01-19
NO155635C (no) 1987-05-06
IE812828L (en) 1982-06-30
JPS6365798B2 (de) 1988-12-16
OA06977A (fr) 1983-07-31
PH19566A (en) 1986-05-21
JPS57135310A (en) 1982-08-20
FR2497266B1 (de) 1983-12-16
IN157830B (de) 1986-07-05
MX158744A (es) 1989-03-10
NO814303L (no) 1982-07-01
IE52218B1 (en) 1987-08-05

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