EP0504008B1 - Verfahren und Vorrichtung zum Installieren einer Sonde gegen die Wand eines verrohrten Bohrloches - Google Patents

Verfahren und Vorrichtung zum Installieren einer Sonde gegen die Wand eines verrohrten Bohrloches Download PDF

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Publication number
EP0504008B1
EP0504008B1 EP92400562A EP92400562A EP0504008B1 EP 0504008 B1 EP0504008 B1 EP 0504008B1 EP 92400562 A EP92400562 A EP 92400562A EP 92400562 A EP92400562 A EP 92400562A EP 0504008 B1 EP0504008 B1 EP 0504008B1
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EP
European Patent Office
Prior art keywords
sonde
accordance
rigid
probe
well
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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
Application number
EP92400562A
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English (en)
French (fr)
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EP0504008A1 (de
Inventor
Christian Wittrisch
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Classifications

    • 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
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/911—Particular well-logging apparatus

Definitions

  • the present invention relates to a method and a device for the temporary placement of one or more measurement probes against the interior wall of a cased well.
  • the well probe according to the invention can be installed in a well, for example for various operations related to the production of hydrocarbons.
  • a well equipped for petroleum production for example, includes a casing or casing tube installed during drilling operations. It is held in place by cement injected into the annular space between it and the borehole. In the cased well, a tubular column or tubing is put in place for the flow of fluids outside the production area.
  • the well probe according to the invention can be used in this flush, to contain seismic or acoustic sensors (accelerometers, geophones, piezoelectric sensors, etc.) that we want to couple with the casing for passive listening of the area put into production to determine its evolution over time for example.
  • seismic or acoustic sensors accelerometers, geophones, piezoelectric sensors, etc.
  • the well probe according to the invention can also be used, for example, in the context of hydraulic fracturing operations in an oil zone where a fluid under pressure is injected into a portion of a well confined so as to create fractures therein, in order to promote its production.
  • a probe provided with directional sensors sensitive to the noise emitted by the rocks subjected to the fracturing fluid, so as to determine the directions of propagation of the fractures.
  • it is also possible to include temperature and pressure sensors.
  • the method according to the invention is suitable for the temporary establishment for intervention in a well provided with a casing tube, of at least one measurement probe connected by conductive means to a control and recording assembly, and its recovery after use, which avoids the drawbacks mentioned above.
  • each probe is carried out by direct contact between it and the rigid drive member.
  • each probe is carried out for example by means of thrust pieces forming stops, fixed to the rigid connecting member on either side of the probe and at a longitudinal distance from each other greater than the greater longitudinal dimension of the probe, and also of radial centering parts to limit the angular movement of said probe relative to the rigid connecting member.
  • the displacement of each probe is carried out by traction on flexible cables connecting said probe to the rigid connecting member.
  • the method may include transmitting the signals received by the sensors of the probe to the control and recording assembly via an intermediate box fixed to said rigid drive member.
  • the transmission is carried out by flexible connection conductors or possibly by a non-material connection between the probe and the intermediate box, and by conductors between the latter and the control and recording assembly.
  • detection means to verify the absence of contact between said probe on the one hand and the thrust parts and the centering parts on the other hand.
  • the method can also include the use of means for measuring the angular orientation of said probe and in this case also, optionally, the angular orientation of the rigid drive member allowing, by comparison, decoupling. mechanical of said probe relative to said drive member.
  • the method according to the invention offers a very safe and simple solution to implement for the installation of a probe and its recovery after intervention in a well.
  • the probe being placed outside and decoupled from the column, it is possible to perform listening for long periods in wells used for injection.
  • the tubular column is completely free for production or various interventions.
  • the column can be used to inject support agents without any risk for the probe which is out of reach in the annular space.
  • the method can be used in the context of operations in production wells for example, in which case a tubular column is advantageously used externally provided with drive means as a rigid member for moving the probe pressed against the casing tube.
  • the column remains entirely free for the circulation of fluids: production of petroleum effluents or active agents for interventions in the production area.
  • the device for implementing the method is characterized in that it comprises at least one probe for measuring instruments or sensors, provided with magnets capable of keeping it pressed against the inner wall of a casing tube in a well and a rigid member associated with drive means for translating said probe pressed against the interior wall along said tube.
  • the drive means comprise for example stops fixed to the rigid member which can be brought to bear against the plated probe by displacement of said column.
  • the drive means may also include flexible slings or cables fixed to the column and to the probe and which can be tensioned by displacement of said column.
  • the device may also include means for controlling the mechanical uncoupling of said probe relative to the drive means.
  • the device may also include an acquisition and transmission assembly connected to said probe by connection means and / or angular measurement means for knowing the position of said probe in the well.
  • the rigid member is for example a column provided towards its base with an expandable closure member, a packer for example.
  • the well equipment can also comprise various auxiliary sensors (such as hydrophones, manometers, temperature probes, etc.) which are placed under the parking lot and which are associated with electrical conductors passing through the shutter member. which provides a more complete set of measures.
  • the method according to the invention can be applied, for example, to the installation of a measurement probe in a well equipped for petroleum production.
  • This well has a casing tube 2 which is held in place by injecting cement into the annular space between it and the well.
  • a production tube 3 provided with an expandable obturation member 4 is lowered into the well as far as the zone which is put into production possibly as a result of hydraulic fracturing operations.
  • a probe connected to a control and recording assembly on the surface by a CL multi-conductor cable, must be lowered to the vicinity of the production area to make various measurements making it possible to monitor the development of the basin.
  • the method according to the invention consists first of all in placing sufficient magnets 5 in the probe to be lowered to keep it pressed against the metal casing 2.
  • magnets made of a samarium-cobalt alloy are used, the power to volume ratio is very favorable.
  • a tubular section 6 provided with drive means. These means consist of two shoulders or stops 6 made of metal or elastomer, the longitudinal spacing of which is greater than the length of the probe to be driven.
  • the drive means may also include two radial extensions 7 when it is desired to angularly position the probe relative to the rigid column. The angular spacing of these two extensions is greater than the angular sector occupied by the probe so that in an intermediate position, it does not touch either of the two.
  • magnets 8 are preferably included in the radial extensions 7.
  • Electromagnetic sensors 9 are also included in the probe to detect any contact between it and the extensions 7.
  • the probe is then introduced into the well by pressing it against the metal casing 3 so that it is between the two shoulders 6 and the two radial extensions 7 of the column section 3.
  • the column is lowered into the well by connections successive sections and, progressively, the CL multi-conductor cable is unwound. In its translation, the column drives the probe pressed against the casing towards the intervention area.
  • the operating means When the probe has reached the chosen location, the operating means are actuated so as to make the column move back over a distance approximately equal to half the longitudinal spacing of the stops 6. In this way, it is possible to deviate from the probes the upper longitudinal drive stop 6 which was used to push it down.
  • the operator can also control the rotation of the column on itself in case contact between the probe and one of the radial extensions is detected by one of the sensors 9. After the planned intervention, the probe can be moved to another intervention point or brought back to the surface by displacement of the column, the lower stop then pressing against the probe to drive it upwards.
  • the probe When the probe is used in the context of production operations, it generally includes acoustic or seismic sensors 10 (accelerometers, geophones, velocimeters, piezoelectric sensors, etc.) making it possible to listen to noises emanating from the tank being production. They may for example be tri-axial geophones making it possible to detect the direction of propagation of the acoustic waves received.
  • acoustic or seismic sensors 10 accelerometers, geophones, velocimeters, piezoelectric sensors, etc.
  • a probe 11 is preferably chosen with an outer wall with a radius of curvature substantially identical to that of the casing (Fig. 2). This rounded wall probe, may be in the form of a greater or lesser angular sector depending on the case.
  • a ring-shaped probe FIG. 3
  • the probe consists for example of two half-shells 11A and 11B joined to each other so that they each retain sufficient mobility to remain in any circumstance pressed against the tube, and each provided with holding magnets against the casing tube.
  • the ring constituting the probe can also of course be subdivided into several angular sectors distributed similarly around the column. Sufficient space is left between the parts to allow the possible passage of fluids.
  • the drive means of the probe are constituted by flexible cables or slings 12 made of steel or nylon.
  • the cables are fixed to the probe on the one hand and to points in column 3.
  • the longitudinal spacing of these cable anchoring points is greater than the length of the probe.
  • the length of the cables is chosen so that they are all relaxed in an intermediate position of the probe and cannot transmit parasitic vibrations to it.
  • the displacement of the probe towards the place of intervention is obtained by traction on the probe by means of the lower cables.
  • the probe is raised (Fig. 5) by traction using the upper cables 12.
  • the probe can be made up of two parts.
  • a first part 13 containing sensors and provided with magnets, is pressed against the casing or casing tube.
  • a second part is contained in a housing 14 which is for example fixed to the rigid column, is connected to the first by flexible electrical conductors 15. This second part is adapted to acquire the signals received by the sensors of the probe 13 and to transmit them on the CL connection cable connected on the surface with the control and recording unit.
  • connection can be replaced by flexible electrical conductors 15 between the probe and the acquisition unit 14 by electromagnetic transmission means, when the flow of the signals to be transmitted is not too great.
  • Means can be used to obtain precise angular positioning of the probe containing the sensors.
  • the angular measurement elements used are for example of the pendulum type with an electric potentiometer to measure the position of the vertical plane where it is placed.
  • two angular measuring elements 16, 17 of this type are used.
  • One, 16, is associated with the probe pressed against the casing and the other, 17, with the electronic unit fixed to the column.
  • the probe is brought into a determined plane and by equalizing the indications provided by the two elements 16, 17, they are placed substantially in the same radial plane.
  • the embodiments described make it possible to obtain a very good coupling between acoustic or seismic sensors and the wall of the well.
  • They can be protected against the so-called tube waves, propagating along the well, by isolating them by one or more acoustic screens 18 fixed to the column, which seal the ring between it and the casing tube.
  • the probe is arranged above and in the vicinity of a parking space 19 confining for example a production area, and it is surmounted by an acoustic screen 18 capable of significantly attenuating the tube waves.
  • the probe section can sometimes be too large for the annular space available. In this case, it is possible to use eccentrics to offset the column laterally at least in the installation area of the probe.
  • the mode of implementation of the method shown diagrammatically in FIGS. 8, 9 provides a more complete set of data.
  • a production column 3 provided towards its base with an expandable obturation member 19 of the parker type for example to confine the underground zone where one intervenes either for its production or for fracturing operations with injection of fracturing agents for example.
  • the electronic unit 15 is connected on the one hand to the probe 1 magnetically coupled to the wall of the casing tube 2 and on the other hand to auxiliary sensors adapted to measure certain parameters in the confined area.
  • the auxiliary sensors may include hydrophones 20 and an element 21 for measuring the pressure prevailing in the confined area. They are connected to the electronic unit 15 by conductors 22 passing through the shutter member 19. These sensors may or may not be coupled with the casing tube.
  • the parker 19 is arranged towards the production area.
  • several sensor housings 13 are pressed against the wall of the casing tube each associated with their thrust stops 6 and their centering extensions 7.
  • the housings for sensors 13 are connected for example to a common acquisition and transmission box 14.
  • On the opposite side of the parking lot one can have a series of auxiliary sensors 20 so as to make measurements at several different depths which, in the case of hydrophones, allows focusing effects.
  • One or more boxes for sensors 13 can optionally be added thereto.
  • the auxiliary sensors 20 and these possible boxes are all connected through the parker 19, by conductors 22, to the common electronic box 14.
  • the shutter member 19 can also be arranged towards the head of the well.
  • the entire measuring device with its boxes for sensors 13, its electronic box 14 and all of the auxiliary sensors, is arranged under the shutter member.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Claims (17)

  1. Verfahren zur Durchführung eines Eingriffs in einer mit einem Futterrohr (2) versehenen Bohrung durch kurzzeitige Bereitstellung einer Meßvorrichtung an bestimmten Eingriffsstellen längs der Bohrung, die wenigstens eine Meßsonde (1) umfaßt, welche über eine Übertragungseinrichtung (CL) mit einer Bedienungs- und Aufzeichnungseinrichtung verbunden ist, dadurch gekennzeichnet, daß es umfaßt:
    - die Anbringung von magnetischen Kopplungsmitteln (5) an jeder Sonde (1), die geeignet sind, sie an die Innenwand des Futterrohres anzulegen,
    - die Verschiebung von jeder Sonde, die durch magnetische Kopplung an der Wand angelegt gehalten wird, in der Bohrung durch eine steife Mitnahmeeinrichtung (3), welche mit einer Betätigungseinrichtung verbunden ist, vor dem gesamten Eingriff jeder Sonde,
    - ihre mechanische Entkopplung gegenüber der steifen Mitnahmeeinrichtung (3) durch relative Längsverschiebung dessen gegenüber der Sonde.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verschiebung von jeder Sonde durch einen direkten Kontakt zwischen dieser und der steifen Mitnahmeeinrichtung (3) bewirkt wird.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Verschiebung von jeder Sonde mittels Anschläge bildenden Schubelementen (6), die an der steifen Mitnahmeeinrichtung (3) beidseits der Sonde und in einem gegenseitigen Längsabstand größer als die größte Längenabmessung der Sonde angebracht sind, und mittels radialen Zentrierungselementen (7) zum Begrenzen der Winkelbewegung der Sonde in Bezug auf die steife Mitnahmeeinrichtung (3) bewirkt wird.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verschiebung von jeder Sonde durch Zugförderung an Anschlußkabeln (12), welche die Sonde mit der steifen Verbindungseinrichtung (3) verbinden, bewirkt wird.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es die Übertragung von durch die Aufnehmer der Sonde (13) erhaltenen Signalen auf die Bedienungs- und Aufzeichnungseinrichtung über das Zwischenglied eines Zwischengehäuses (14) umfaßt, welches an der steifen Mitnahmeeinrichtung angebracht ist.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Übertragung über Leiterverbindungskabel (15) bewirkt wird.
  7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Übertragung über eine immaterielle Verbindung zwischen der Sonde (13) und dem Zwischengehäuse (14) und über Leiter (CL) zwischen diesem und der Bedienungs- und Aufzeichnungseinrichtung bewirkt wird.
  8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß es darüber hinaus die Verwendung von Meßmitteln (17) zur Winkelbestimmung der steifen Mitnahmeeinrichtung (3) umfaßt, die durch Vergleich die mechanische Entkopplung der Sonde (13) gegenüber der Mitnahmeeinrichtung (3) gestatten.
  9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man eine röhrenförmige Stütze verwendet, die außen mit Mitnahmemitteln wie der steifen Einrichtung versehen ist, um die an dem Futterrohr angelegte Sonde zu verschieben.
  10. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß sie eine Meßvorrichtung mit wenigstens einer Sonde (1, 13) für Meßinstrumente oder -aufnehmer, die mit Magneten (5) versehen sind, welche geeignet sind, sie an der Innenwand eines Futterrohres (2) in einer Bohrung angelegt zu halten, und eine steife Einrichtung (3), die mit Mitnahmemitteln (6, 7) zur Verschiebung der an die Innenwand angelegten Sonde längs des Rohres verbunden sind, umfaßt.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Mitnahmemittel Anschläge (6) umfassen, die an der steifen Einrichtung befestigt sind und zur Abstützung gegen die angelegte Sonde durch Verschiebung der Stütze gebracht werden können.
  12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Mitnahmemittel Anschlußschlingen oder -kabel (12) umfassen, die an der steifen Einrichtung und an der Sonde angebracht sind und durch Verschiebung der Einrichtung gezogen werden können.
  13. Vorrichtung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß sie Mittel (8, 9) zur Kontrolle der mechanischen Abkopplung der Sonde gegenüber den Mitnahmemitteln (7) umfaßt.
  14. Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß sie eine Erfassungs- und Übertragungseinrichtung (14) umfaßt, die mit der Sonde (13) über Verbindungsmittel verbunden ist.
  15. Vorrichtung nach einem der Ansprüche 10 bis 14, dadurch gekennzeichnet, daß sie Winkelmeßmittel (16), um die Postion der Sonde (13) in der Bohrung zu bestimmen.
  16. Vorrichtung nach Anspruch 10 oder 14, dadurch gekennzeichnet, daß die steife Einrichtung (3) als eine Stütze ausgebildet ist, die in Richtung zu ihrer Basis mit einer dehnbaren Dichtungseinrichtung (19) versehen ist, wobei die Vorrichtung darüber hinaus Hilfsaufnehmer (20, 21) trägt, die über Verbindungsleiter (22) verbunden sind, welche die Dichtungseinrichtung (19) durchdringen.
  17. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß sie eine Vielzahl von Sonden, welche der Stütze an verschiedenen Stellen längs dieser auf einer Seite wenigstens der Dichtungseinrichtung zugeordnet sind, und eine Vielzahl von Hilfsaufnehmern, welche auf einer gleichen Seite der Dichtungseinrichtung angeordnet sind, umfaßt.
EP92400562A 1991-03-08 1992-03-04 Verfahren und Vorrichtung zum Installieren einer Sonde gegen die Wand eines verrohrten Bohrloches Expired - Lifetime EP0504008B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102939A FR2673672B1 (fr) 1991-03-08 1991-03-08 Methode et dispositif de mise en place de sondes contre la paroi d'un puits cuvele.
FR9102939 1991-03-08

Publications (2)

Publication Number Publication Date
EP0504008A1 EP0504008A1 (de) 1992-09-16
EP0504008B1 true EP0504008B1 (de) 1993-09-01

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EP92400562A Expired - Lifetime EP0504008B1 (de) 1991-03-08 1992-03-04 Verfahren und Vorrichtung zum Installieren einer Sonde gegen die Wand eines verrohrten Bohrloches

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Country Link
US (1) US5318129A (de)
EP (1) EP0504008B1 (de)
CA (1) CA2062472C (de)
FR (1) FR2673672B1 (de)
NO (1) NO178980C (de)

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Publication number Publication date
NO920897D0 (no) 1992-03-06
CA2062472A1 (fr) 1992-09-09
US5318129A (en) 1994-06-07
FR2673672B1 (fr) 1993-06-04
FR2673672A1 (fr) 1992-09-11
NO178980B (no) 1996-04-01
NO920897L (no) 1992-09-09
NO178980C (no) 1996-07-10
CA2062472C (fr) 2002-04-16
EP0504008A1 (de) 1992-09-16

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