EP0548303B1 - Verfahren zum durchführen vom messungen nach dem ausbau eines im bohrloch immobilisierten messwerkzeuges - Google Patents

Verfahren zum durchführen vom messungen nach dem ausbau eines im bohrloch immobilisierten messwerkzeuges Download PDF

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Publication number
EP0548303B1
EP0548303B1 EP92912271A EP92912271A EP0548303B1 EP 0548303 B1 EP0548303 B1 EP 0548303B1 EP 92912271 A EP92912271 A EP 92912271A EP 92912271 A EP92912271 A EP 92912271A EP 0548303 B1 EP0548303 B1 EP 0548303B1
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EP
European Patent Office
Prior art keywords
cable
sonde
probe
well
string
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP92912271A
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English (en)
French (fr)
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EP0548303A1 (de
Inventor
Christian Wittrisch
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
    • E21B17/025—Side entry subs
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Definitions

  • the present invention relates to a method allowing the continuation of interrupted or not yet started measurement operations, when the measurement probe is immobilized in a well in which the latter has been lowered at the end of an operating cable. and measurement transmissions.
  • a first method is common to all the operations of recovering tubular parts stuck or lost in a borehole.
  • the well of the measuring cable is first released so that it does not interfere with subsequent operations. For this we pull on the cable until it breaks at the fragile point which is located at the fixing on the upper part of the probe.
  • a lowering operation is carried out in the well of a repechage lining consisting mainly of a repechage bell, or "overshot" according to the term used in the profession, adapted to be able to grip the top of the probe.
  • the other components are conventionally rods and drill collars.
  • the difficulty consists in this method of covering the probe by the overshot in the absence of guidance and groping blindly from the surface.
  • cut and thread The most common method is called "cut and thread". This method consists in cutting the cable at the work floor without dropping the part of the cable connected to the probe into the well. The two ends of the cut cable are then fitted with two half elements constituting a quick connector. We begin to assemble the overshot and the first drill rods in the drilling tower. The end of the cable connected to the winch is threaded through these first elements when they are hanged on the drilling hook. The two ends of the cable are connected by the quick connector. We can then keep the cable taut by its winch while descending around it the overshot and the first rods in the well.
  • the cable After having suspended them on the rotation table, the cable is held before opening the quick connector so that the end of the cable connected to the winch can be threaded through new elements of assembly assembled and suspended from the drilling hook, as before .
  • the lowering maneuver continues by repeating this operation until the overshot guided by the coaxial cable comes to cover and grip the top of the probe. We finish the recovery operation like the previous method after breaking the cable.
  • the method of the present invention reduces the maneuvering time by limiting the number of threading of the cable through the lengths of tubulars by advantageously using a connector with lateral opening.
  • the probe In the "cut and thread" method the probe is never electrically connected to the surface and there has never been an attempt to keep the use of the probe's sensors once it has been stuck.
  • the use of a quick connector comprising sealed connections for the conductors is of no interest here since the cable will be broken after having gripped the probe.
  • the cable being coaxial with the lining over its entire length, it is not possible to move the probe while preserving the entire continuity of the cable.
  • the method of the invention also has the advantage of allowing the measurements to be continued, once the probe is gripped, either towards the bottom of the well or up towards the surface.
  • the operation of measurement which was interrupted or made impossible by the immobilization of the probe, will not have been entirely lost since it is now possible thanks to the present method to carry out all or at least part of the measurement program.
  • the invention provides a means of precise knowledge of the moment of contact of the attachment fitting with the probe head and then of the verification of the retention of the probe by said fitting.
  • the probe is fully operational since it is mechanically and electrically connected as at the origin of the operation to the surface installation.
  • the operator can control that the movement of the lining moves the probe identically.
  • This advantage guarantees not only the possibility of subsequent measurements, but also the successful attachment of the probe.
  • the previous methods do not provide any reliable information on the quality of the attachment of the probe, which explains the relatively high failure rate in the most difficult situations.
  • This "side door” method is not used for wells deeper than 1000 meters because it presents great risks of damage to the cable when the lining is lowered to the bottom, or in the event of a cable break. , the lack of overshot guidance most often compromises the recovery of the probe.
  • the method of the present invention makes it possible to operate in deep, difficult, deviated wells, and also in open holes because the cable is present in the annular defined by the tubulars and the well, only at a dimension chosen by the operator where the operator knows that the cable is not at risk of any damage.
  • the cable is thus protected from external friction over a length determined by the method.
  • the protection corresponds to the length of the gasket between the hanging fitting and the side window fitting.
  • the present invention therefore provides a method enabling measurements to be continued using a measurement probe immobilized in a well, said probe being connected to the surface by a cable comprising at least one connecting conductor electrically said probe to a surface control installation, said cable being operable by means of a winch.
  • the method of the invention also makes it possible to choose the determined length of tubulars between the attachment fitting and said side window fitting substantially equal to a length of mechanical protection of said cable suitable for both reaching the probe with said fitting. '' hooking and carrying out the displacements during the continuation of the measurements without damaging the cable.
  • the method can make it possible to circulate the drilling fluid by pumping through the fastening fitting, the fitting with side window comprising sealing means around the passage of the cable between the inside and the outside of said fitting.
  • the invention can provide a method for detecting the attachment of the probe by said bell by means of the surface control installation connected to the probe by said conductors of said cable.
  • a quick mechanical connector comprising means for connecting the electrical conductors of said cable.
  • the method according to the invention can make it possible to break the cable at the weak point located at the top of the probe and to wind the cable using the winch.
  • the probe being raised to the surface by performing the lifting operation of the packing.
  • a particular application can be characterized in that the probe is immobilized by a jamming in the well.
  • Another advantageous application can be characterized in that the probe cannot reach the measurement or intervention areas because of the too great inclination of the well relative to the vertical which does not allow the descent of said probe by gravity.
  • FIG. 1A represents a well comprising a cased length 2 and a length of uncovered hole 3.
  • a measurement or intervention probe is immobilized in the overcast at dimension 25.
  • the probe has been lowered into the well by means of the cable 4 maneuvered by the winch 5 located on the surface.
  • the cable comprises conductors which electrically connect the probe 1 to a control installation 6.
  • the term dimension used will mean the length of the well measured from a fixed mark located on the surface. In general, this is the rotation table, but it could be especially from the ground or the seabed. The change of measurement mark will have no consequence on the description and scope of the invention,
  • the probe is immobilized at a level where the well is cased, similarly, the well may not yet have a cased length.
  • the probe manipulated by the cable 4 can be trapped mechanically in the well in such a way that it can no longer be raised to the surface or lowered to the bottom of the well. It will not depart from the scope of the invention if the probe is prevented from being displaced in one direction either towards the surface or towards the bottom. This may be due to a partial mechanical jamming or to the fact that the inclination of the well is such that the action of gravity is no longer sufficient to allow the descent of the probe hanging from the end of the cable 4. In this case the probe is immobilized when the friction on the probe becomes preponderant with respect to the force of gravity acting on the probe.
  • the immobilization rating can then be either the rating at which the probe no longer descends to the bottom of the well, or a lower rating located above it, because the operator preferentially chooses in this case of activate the method of the invention with a probe not placed on the walls of the well but hung on the cable. To do this, he pulls on the cable to raise the probe to a determined dimension.
  • the section of the cable 4 connected to the probe 1 is supported using a conventional jaw device 9 placed at the level of the rotation table 8.
  • the cable is cut substantially at- above the table 8 and two half-connectors 7 are fixed on each end.
  • the quick connector made up of the two half-connectors is of a conventional type comparable to those used to carry out the "cut and thread" method.
  • a specific quick connector is used comprising means for connecting the cable conductors.
  • This specific connection can for example be a quick plug-in socket capable of supporting the weight of the cable at the same time as it electrically connects the probe to installation 6, or more simply a quick mechanical connection which also makes it possible to connect the conductors together .
  • the electrical connections are actually made only when it becomes essential, that is to say when the side opening fitting is placed on the gasket.
  • the operators After the step illustrated in FIG. 1A, the operators assemble the first tubular elements of the attachment fitting above the rotation table. When these are still hanging from the lifting hook, the end of the cable 10 connected to the winch is then threaded into these first elements, then the two ends of the cable are connected by connecting the two half-connectors 7. This is thus constituted the quick connector 14.
  • FIG. 1B represents the step where the first packing elements 12 are hung from the risers 30 and comprise at their end the attachment fitting 11 suitable for cooperating with the head of the immobilized measurement probe.
  • the quick connector 14 being assembled, the cable 4 is re-tensioned from an action on the winch 5.
  • the suspension means 9 are removed from the cable.
  • the station manager descends the elements 12 into the well while keeping the cable 4 substantially taut, which is located inside the elements 12. He suspends these on the rotation table with the usual means in the profession. It should be noted that the cable 4 and therefore the quick coupling 14 are stationary relative to the rotation table and that the elements 12 are lowered concentrically to said cable.
  • Such a side window fitting is well known, and can be illustrated in particular by the documents FR 2502236 or US 4607693.
  • the end of the part of the cable 4 connected to the probe is passed through the opening of the side window of said connector and it is mechanically and electrically connected to part 10 using a connector 27.
  • This connector restores the electrical continuity of the cable conductors, it must be watertight against drilling mud and be able to withstand traction at least greater than the cable's tensile strength. It will not depart from the scope of this invention if a quick coupling 14 can be used which can meet the conditions set out for the special coupling 27.
  • connection device with a side window as illustrated in FIG. 3.
  • FIG. 3 represents a so-called "three-piece" connector.
  • the element 31 is the fitting with lateral window proper, comprising a lateral opening 34 equipped with a sealing system and possible attachment of the cable.
  • This connector is screwed by a thread 39 onto another connector 32 comprising a screw ring 35.
  • This ring turns freely around the cylindrical extension 42 of the connector 32.
  • a device 37 maintains the ring 35 in a fixed longitudinal position relative to the connection 32.
  • This device can be produced from a circular ring in two parts screwed radially into a groove 43 machined in the extension 42. This device must be dimensioned to support the weight suspended on the ring by the thread 38.
  • a sealing system 41 completes the assembly of the ring on the extension.
  • the third lower connection 33 cooperates with a lower tubular lining by its thread 40.
  • An anti-rotation system 36 angularly fixes the connection 33 relative to the connection 32.
  • the determination of the length 16 is important because it represents the cable protective fur between the hooking fitting and the side opening fitting.
  • the length 16 must be at least equal to the length 17 which corresponds to the length of the overdraft between the shoe and the immobilization rating.
  • the length 16 must be equal to the length of the overdraft up to the dimension of the most distant measurement . If one wishes to reach the bottom of the well, the length 16 must be equal to the total length of the overdraft.
  • FIG. 1E represents the attachment 18 by the attachment connector 11 on the head of the probe 1.
  • the cable 4 has a length 19 in the annular casing-lining. During the descent of the length 20 of the attachment fitting, the cable 4 is kept tensioned by means of the winch 5. The probe being always immobilized, the connection with side window slides along the cable when the tubular fitting is lowered towards probe 1.
  • the operators fix a circulation head on the upper part of the gasket to wash the attachment fitting by circulation in the gasket.
  • the side window of the connector 28 includes a sealing system.
  • the probe is gripped by controlled tension on the cable and the downward movement of the coupling.
  • the operators identify themselves in particular by the measurement of the lengths and by the reactions of the sensors of the probe since the latter remains operational thanks to the connections established by the connector 27.
  • the attachment can be visualized by the control installation 6.
  • FIG. 2A shows the descent of the probe lower below the immobilization dimension 25 by a length represented here by the brace 21.
  • the length 22 of lining represents in this case the sum of the lengths 20 and 21. We perform if necessary measurements on this length 21. If the length 17 uncovered between the point of immobilization and the shoe 26 is less than or equal to the dimension of the shoe 26, it is also possible to carry out measurements on the length 17.
  • the maximum upper measurement dimension is determined when the fitting 28 is exposed.
  • This invention is not limited to interventions in an uncased or partially cased well, indeed this method is applicable and has all its advantages when the measurement probe operating inside the casings, is immobilized in particular by the significant friction provided by bends, deformations or deterioration of an area of these same casings.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Claims (11)

  1. Verfahren, das das Verfolgen der Messungen mit Hilfe einer in einem Bohrloch festsitzenden Meßsonde ermöglicht, wobei diese Sonde mit der Oberfläche über ein Kabel verbunden ist, das wenigstens einen Leiter umfaßt, der elektrisch diese Sonde mit einer Oberflächenkontrollinstallation verbindet, wobei dieses Kabel vermittels eines Haspels betätigt werden kann, die folgenden Stufen umfassend:
    - man schneidet das Kabel oberhalb des Niveaus des Bohrtisches,
    - man fixiert einen Halbverbinder an jedem der beiden Enden des geschnittenen Kabels, wobei diese Halbverbinder so ausgelegt sind, daß sie einen Schnellverschluß für die Montage dieses Kabels bilden,
    - man senkt in das Bohrloch eine röhrenförmige Garnitur zum Festmachen der festsitzenden Sonde ab, wobei diese Garnitur in ihrem Innenkanal die untere Länge des Kabels umfaßt, das im wesentlichen zwischen dieser Sonde und dem Arbeitsboden gespannt ist und diese Garnitur wenigstens einen Festmacherverbinder umfaßt, der so ausgelegt ist, daß er diese Sonde sowie eine bestimmte Länge ungleich Null der Manövrierrohre erfaßt,
    - man befestigt einen Verbinder mit seitlichem Fenster an das obere Ende dieser bestimmten Länge der Betätigungsrohre, wobei dieser Verbinder so ausgelegt ist, daß er diese untere Kabellänge von dem Inneren der Stahlrohre gegen das Äußere passieren läßt,
    - man verbindet außerhalb dieser Garnitur die beiden Kabelenden und verbindet diese Leiter dieses Kalbes,
    - man fügt oberhalb dieses Verbinders eine Rohrlänge hinzu, von einer Auslegung derart, daß die im Bohrloch festsitzende Sonde erreicht wird, indem man dieses Kabel im wesentlichen gespannt hält,
    - man führt die Garnitur durch dieses Koaxialkabel, um die Sonde durch diesen Festmacherverbinder festzumachen,
    - man führt Messungen oder Eingriffe durch, wobei diese Sonde durch diesen Festmacherverbinder an dem unteren Teil dieser Garnitur befestigt und mit der Oberfläche über dieses Kabel verbunden ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß
    - man die bestimmte Länge von Rohren zwischen dem Festmacherverbinder und diesem Verbinder mit seitlichem Fenster im wesentlichen gleich der Länge des mechanischen Schutzes dieses Kabels wählt, ausgelegt, um gleichzeitig die Sonde mit diesem Festmacherverbinder zu erreichen, ohne das Kabel zu beschädigen und für die Bewegungen während der Fortsetzung der Messungen.
  3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    - man Messungen mit dieser festgemachten Sonde durchführt, indem man tiefer als die Kote des Festsitzens dieser Sonde absenkt, indem man Rohrstücke an das obere Ende der Garnitur hinzufügt und dieses Kabel im wesentlichen gespannt hält.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß man Messungen mit dieser festgemachten Sonde durchführt, indem man höher als die Kote des Festsitzens anhebt, wobei man höchstens die Länge der Rohre demontiert, die sich oberhalb dieses Verbinders mit seitlichem Fenster befinden und dabei dieses Kabel im wesentlichen gespannt hält.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    - man das Bohrfluid durch Pumpen durch die Festmachegarnitur zirkulieren läßt, wobei der Verbinder mit seitlichem Fenster Dichtungsmittel um den Durchgang des Kabels zwischen dem Inneren und Äußeren dieser Garnitur herum umfaßt.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    - man das Festmachen der Sonde durch diesen Festmacherverbinder vermittels der Oberflächenkontroll- oder Regelstation erfaßt, die mit der Sonde durch diese Leiter dieses Kabels verbunden ist.
  7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    - man einen mechanischen Schnellverbinder dieses Kabels verwendet, der Verbindungsmittel der elektrischen Verbinder des Kabels umfaßt.
  8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    - man das Kabel an der am Kopf der Sonde befindlichen Schwachstelle bricht, das Kabel mit Hilfe des Haspels anhievt und man die Sonde an die Oberfläche hievt, indem man das Anhievemanöver der Garnitur durchführt.
  9. Anwendung des Verfahrens nach einem der vorhergehenden Ansprüche auf ein Erdölbohrloch, das gegebenenfalls gegenüber der Vertikalen abgelenkt ist und wobei eine Meß- oder Eingriffssonde, die mit der Oberfläche über ein Kabel verbunden ist, das wenigstens einen elektrischen Leiter umfaßt, festgesetzt wird, wobei diese Sonde die Meß- oder Eingriffszonen dieses Erdölbohrlochs durch Einwirken auf das Kabel nicht erreichen kann.
  10. Anwendung nach Anspruch 9, dadurch gekennzeichnet, daß die Sonde in diesem Bohrloch eingeklemmt ist.
  11. Anwendung nach Anspruch 9, dadurch gekennzeichnet, daß die Sonde die Meß- oder Eigriffszonen wegen der zu großen Neigung des Bohrlochs, bezogen auf die Vertikale, die das Absenken dieser Sonde durch Schwerkraft mittels des Kabels nicht erlaubt, nicht erreichen kann.
EP92912271A 1991-06-11 1992-06-10 Verfahren zum durchführen vom messungen nach dem ausbau eines im bohrloch immobilisierten messwerkzeuges Expired - Lifetime EP0548303B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9107201A FR2677701B1 (fr) 1991-06-11 1991-06-11 Methode pour poursuivre des mesures apres la recuperation d'un outil de mesure immobilise dans un puits.
FR9107201 1991-06-11
PCT/FR1992/000523 WO1992022728A1 (fr) 1991-06-11 1992-06-10 Methode pour poursuivre des mesures apres la recuperation d'un outil de mesure immobilise dans un puits

Publications (2)

Publication Number Publication Date
EP0548303A1 EP0548303A1 (de) 1993-06-30
EP0548303B1 true EP0548303B1 (de) 1995-09-06

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US (1) US5318125A (de)
EP (1) EP0548303B1 (de)
CA (1) CA2089144A1 (de)
FR (1) FR2677701B1 (de)
NO (1) NO304241B1 (de)
WO (1) WO1992022728A1 (de)

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US10443325B2 (en) * 2017-09-01 2019-10-15 Schlumberger Technology Corporation Method and system for pipe conveyed logging
CN110424916B (zh) * 2019-08-22 2021-12-14 赵大威 一种测斜仪探头的解卡打捞装置
CA3178147A1 (en) * 2020-05-28 2021-12-02 Halliburton Energy Services, Inc. Electrical telemetry system
CN117108232B (zh) * 2023-10-24 2024-01-12 山西省地质工程勘察院有限公司 一种地热井打捞装置

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FR2668793B1 (fr) * 1990-11-02 1995-12-15 Inst Francais Du Petrole Dispositif perfectionne d'intervention dans des puits de production devies non eruptifs.

Also Published As

Publication number Publication date
NO304241B1 (no) 1998-11-16
US5318125A (en) 1994-06-07
NO930444D0 (no) 1993-02-09
FR2677701B1 (fr) 1993-09-03
CA2089144A1 (fr) 1992-12-12
WO1992022728A1 (fr) 1992-12-23
EP0548303A1 (de) 1993-06-30
NO930444L (no) 1993-02-09
FR2677701A1 (fr) 1992-12-18

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