EP0404669B1 - Verfahren und Vorrichtung zur Durchführung von Perforationsgängen in einem Bohrloch - Google Patents

Verfahren und Vorrichtung zur Durchführung von Perforationsgängen in einem Bohrloch Download PDF

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Publication number
EP0404669B1
EP0404669B1 EP90401733A EP90401733A EP0404669B1 EP 0404669 B1 EP0404669 B1 EP 0404669B1 EP 90401733 A EP90401733 A EP 90401733A EP 90401733 A EP90401733 A EP 90401733A EP 0404669 B1 EP0404669 B1 EP 0404669B1
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EP
European Patent Office
Prior art keywords
tubing
well
connecting element
support
perforating
Prior art date
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
EP90401733A
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English (en)
French (fr)
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EP0404669A1 (de
Inventor
Christian Wittrisch
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Publication of EP0404669A1 publication Critical patent/EP0404669A1/de
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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
    • E21B47/04—Measuring depth or liquid level
    • 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
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/06—Releasing-joints, e.g. safety joints
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/116—Gun or shaped-charge perforators
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11—Perforators; Permeators
    • E21B43/119—Details, e.g. for locating perforating place or direction

Definitions

  • the subject of the present invention is a method and a device for carrying out perforation operations in a well and in particular a well intended for the production of petroleum.
  • the production of an oil well is carried out by lowering into a cemented well a production column (or tubing) of section smaller than that of the well.
  • a perforation tool such as a barrel containing one or more explosive charges, is fixed to its base by detachable connection means.
  • the column is fitted towards its lower part, with a packer type shutter block whose expansion controlled from a surface installation, makes it possible to close the annular space between the wall of the well and the production column and d '' immobilize it when the barrel has reached the chosen depth.
  • the triggering of the barrel is ensured by the descent into the column of a percussion bar adapted to strike a detonator at the top of the barrel, by opening a valve allowing the application of a hydraulic overpressure which is imposed in the column or alternatively by electric firing by lowering a female electrical connector to a complementary connector disposed at the top of the barrel.
  • TCP for Tubing Conveyed Perforating
  • the method according to the invention may also include a step of measuring state parameters by said measuring assembly after the triggering of said perforation tool.
  • the device according to the invention comprises for example removable locking means by remote control from the surface installation, for immobilizing in translation the support element relative to the column in at least one location thereof. This location can be above the sealing member or even between the location of the sealing member and the lower end of the column. A low stop can optionally be combined with it.
  • the device can also include both removable locking means of the support element with respect to the column, in a high position and a stop integral with the column serving to support the support element in a low position from that -ci, the support element being movable in the column between these two positions.
  • the device comprises means for measuring the conditions prevailing in the part of the well below the sealing member, such as the temperature and pressure.
  • the device may include means for intermittently isolating from one another the parts of the column on either side of the support element, so as to benefit during the perforation operations , the difference in pressure prevailing on both sides.
  • the device according to the invention and its method of implementation have numerous advantages:
  • the perforation tool being movable relative to the column at the end of a connecting cable, the portion of additional well to be drilled below its lowest position to allow its fall and the release of the lower end of the column is shorter than with previous systems. It is also possible to use a perforation tool with several selectively triggerable loads and thus by moving the tool, successively make several perforations at different depths.
  • the implementation of perforation operations is much more flexible than with cannons with stepped charges at fixed intervals from each other.
  • the measurement system attached to the connecting element also makes it possible to make production logs (temperature and pressure measurements for example) along the part of the well under the column.
  • the insulation of the parts of the column on either side of the support element makes it possible to benefit from the generally lower pressure prevailing in the column, to clean the perforations obtained by the triggering of the tool.
  • a tubular column or tubing 1 is lowered there, provided at its lower end with an expandable sealing member 2 such as a packer of known type. On order, it can be expanded until it locks against the wall of the well and immobilizes the column 1.
  • an intervention set 3 comprising a perforation instrument or barrel 4 of a known type surmounted by a box 5 containing a measuring assembly.
  • the section of the housing 5 is chosen so that it can pass through the opening at the base of the column.
  • Cannon 4 has one or more charges of explosives which can be triggered selectively by application of a signal electric control.
  • the measurement assembly in the housing 5 includes signal transmission-reception means making it possible, for example, to make correlation logs capable of being compared with records obtained beforehand in the well. These means include for example a gamma probe.
  • the measuring system also advantageously includes means for making so-called production logs making it possible to measure the values of parameters such as the temperature and the pressure of the fluids coming from the surrounding formations.
  • the housing 5 is connected to the barrel by detachable connection means 6.
  • anchoring fingers (not shown) are used which move apart by the action of an electric motor and disconnect the barrel 4 from the housing 5. It is possible to also use equivalent means such as explosive bolts.
  • the housing is fixed to a first end of an electrically-carrying cable 7.
  • the opposite end of the cable 7 is connected, inside the column 1, to an element support 8 of section smaller than that of the column.
  • Anchoring fingers 9 are pivotally mounted relative to the support element 8. Under the action of a motor not shown, they can be moved apart to an open position where they come to be blocked in a groove 10 formed in the inner wall of the column 1.
  • the support element comprises, on the side opposite to the cable 7, a tubular extension 11 terminated by a flared flange 12. In the center of the tubular extension 11 and along its axis, a male plug is arranged multi-contact 13.
  • the flange 12 is used to guide the plug 13 of a suitable socket 14.
  • the socket 14 is surmounted by a tubular ballasting bar 19 of substantially equal section.
  • the socket 14 also includes anchoring fingers 20 of a known type which can be moved apart by the action of means electromagnetic or electric motor. Notches 21 for the fingers 20 are formed in the inner wall of the tubular extension 11. The fingers can engage there when the male plug 13 is in the correct insertion position. The locking of the fingers 20 allows the translation of the support element 8 by traction on the cable 15 exerted by the surface lifting means. Inside the support element, conductors (not shown) ensure the electrical interconnection of cables 7 and 15.
  • a set of elastic cups 22 Around the support element 8 is arranged a set of elastic cups 22.
  • the set of cups 22 In the blocking position of the support element 8 shown in FIG. 1, the set of cups 22 is in contact with this rectified portion 23 and separates the column parts in leaktight manner on either side.
  • a bypass channel 24 closed by a valve 25, the opening of which can be remote-controlled from the control assembly 18 (FIG. 3).
  • the channel 24 connects the two opposite sides of the cup assembly 22.
  • Pressure sensors can be included in the support element to measure the pressures prevailing on either side of the cup assembly 22.
  • the end section of the column 1 is too narrow to allow the passage of the support element 8.
  • the travel of the latter is therefore made entirely in the column from the high position shown up to a low position delimited by a low stop 26.
  • This stroke is adapted to the latitude of movement that we want to give to the intervention unit 3.
  • the section of the well and / or the packer 2 used allow the use of a column without restriction of terminal diameter.
  • the support element 8 can freely exit from column 1 to follow the descent of the intervention unit 3 towards the base of the well P.
  • the connection between the housing 5 and the support element 8 can be ensured by a rigid connection such as a tube 27 (case shown in Fig.2) or even by a cable as before.
  • the barrel is brought successively to the depths identified by correlation and explosions are triggered there.
  • the column is released.
  • the barrel 4 is detached from the instrument casing 5 and the operating means 18 are actuated on the surface to reassemble it with the support element 8.
  • the barrel falls to the bottom of the well.
  • the end section of the column 1 containing the locking means 9,10 of the support element 8 is added below the section carrying the anchor packer 2 and l
  • the chosen connecting element (cable 7 or tube 27) is adapted to the section of the column at the level of packer 2.
  • the column is provided with a simple bottom stop 28 on which the element of support 8.
  • the intervention assembly is in the low position at the end of its connecting element 7.27 during the entire descent to the intervention zone. Its vertical movement is ensured after connection and locking of the multi-contact plug 13 lowered from the surface.
  • FIG. 7 It would not be departing from the scope of the invention to use the embodiment of FIG. 7 as it is without the intervention of a control cable 15 and therefore without the possibility of moving it.
  • the support element 8 is in this case provided with a hooking head and can be recovered and raised to the surface by a hook lowered at the end of a cable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Measuring Fluid Pressure (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Making Paper Articles (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Drilling And Boring (AREA)
  • Geophysics And Detection Of Objects (AREA)

Claims (12)

  1. Verfahren zum Durchführen der Vorgänge des Perforierens eines Bohrlochs (P) beispielsweise eines Erdölbohrlochs, wobei in das Bohrloch bis zur zu perforierenden Zone eine Kolonne (51) eines Querschnitts kleiner als dem des Bohrlochs herabgelassen wird, die an ihrem unteren Teil und außen mit einem expansiblen Dichtungsorgan (2) versehen ist, das es ermöglicht, den Ringraum zwischen dem Bohrloch und der Kolonne zu schließen und dieses festzusetzen, versehen mit einem Perforierungswerkzeug (4), das über ein Verbindungselement (7, 27) mit einer Trägeranordnung (8) verbunden ist, die innerhalb der Kolonne beweglich und mit Verbindungsmitteln (13, 20, 21) versehen ist, die es ermöglichen, eine Verbindung zwischen diesem Verbindungselement und einem Verbinder (14) herzustellen, der von einer Oberflächeninstallation aus am Ende eines Betätigungskabels (15) herabgelassen wird, dadurch gekennzeichnet, daß es umfaßt:
    - die Zuordnung einer Meßanordnung (5), die permanent mit dem Verbindungselement (7, 27) verbunden ist und mit dem Perforierungswerkzeug (4) beweglich ist, und Befestigungsmittel (6), die durch Fernbedienung lösbar sind und die Trennung zwischen diesem Verbindungselement und dem Perforierungswerkzeug erlauben,
    - die Bewegung der Meßanordnung in dem Bohrloch unterhalb dieser Kolonne (1) durch Einwirken auf das Verbindungselement sowie die Durchführung von Meßzyklen, die die Bestimmung wenigstens eines Ortes ermöglichen, wo das Perforierungswerkzeug betätigt werden soll,
    - das Auslösen des Perforierungswerkzeugs an jedem bestimmten Ort,
    - die Trennung zwischen dem Verbindungselement (7, 27) und dem Perforierungswerkzeug (4), und
    - die Freigabe der Kolonne durch beheben der Trägeranordnung (8) und des hieran befestigten Verbindungselements (7, 27).
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß es im übrigen eine Stufe des Messens von Zustandsparametern durch diese Meßanordnung nach Auslösen dieses Perforierungswerkzeugs umfaßt.
  3. Vorrichtung zum Durchführen von Vorgängen des Perforierens eines Bohrlochs (P), beispielsweise eines Erdölbohrlochs, mit einer Kolonne (1) von einem Querschnitt, der kleiner als der des Bohrlochs ist, und die an ihrem unteren Ende sowie außen mit einem expansiblen Dichtungsorgan versehen ist, welches es ermöglicht, den Ringraum zwischen dem Bohrloch und der Kolonne zu schließen und diese festzusetzen, Betätigungsmittel (17) zum Herablassen der Kolonne bis in die zu perforierende Zone, einem Perforierungswerkzeug (4), einer Trägeranordnung (8), die innerhalb dieser Kolonne beweglich ist, einem Verbindungselement (7, 27), das das Perforierungswerkzeug mit der Trägeranordnung verbindet, einem Steuerkabel (15), welches von einer Oberflächeninstallation (16) aus bis zu dieser Trägeranordnung (8) abgewickelt werden kann, Verbindungsmittel (13, 14, 20, 21), die auf der bestimmten Tiefe die gegenseitige Verbindung des Steuerkabels (15) mit dem Perforierungswerkzeug vermittels dieses Verbindungselements ermöglichen, dadurch gekennzeichnet, daß sie im übrigen umfaßt:
    - eine Meßanordnung (5), die mit diesem Verbindungselement verbunden ist, die durch Verschieben oder Bewegen der Trägeranordnung es ermöglicht, wenigstens einen zu perforierenden Ort zu bestimmen und
    - lösbare Befestigungsmittel (6), die es ermöglichen, das Perforierungswerkzeug vom Verbindungselement bei Ende der Perforierungsvorgänge zu trennen.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß sie Verriegelungsmittel (9, 10) umfaßt, die durch Fernsteuerung von der Oberflächeninstallation aus lösbar sind, um in Translation das Trägerelement, bezogen auf die Kolonne, an wenigstens einem Ort hiervon festzusetzen.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Ort sich oberhalb des Dichtungsorgans (2) befindet.
  6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß sich der Ort zwischen dem Ort des Dichtungsorgans und dem unteren Ende der Kolonne (1) befindet.
  7. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß sie Verriegelungsmittel (9, 10) umfaßt, die lösbar vom Trägerelement in einer oberen Stellung, bezogen auf die Kolonne, sind und einen Anschlag (26) umfaßt, der fest bezüglich der Kolonne ist und als Abstützung für das Trägerelement in einer unteren Stellung hiervon dient, wobei das Trägerelement in der Kolonne zwischen zwei Stellungen verschiebbar bzw. beweglich ist.
  8. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß sie einen Halteanschlag (28) für dieses Trägerelement umfaßt.
  9. Vorrichtung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, daß sie Meßmittel für die Bedingungen umfaßt, die in dem Teil des Bohrlochs unterhalb des Dichtungsorgans herrschen.
  10. Vorrichtung nach einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, daß sie Mittel zur intermittierenden gegenseitigen Isolierung der Teile der Kolonne zu beiden Seiten des Trägerelements umfaßt.
  11. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Verbindungselement ein Mehrleiterkabel (7) ist.
  12. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß dieses Verbindungselement ein steifes Rohr (27) umfaßt.
EP90401733A 1989-06-20 1990-06-18 Verfahren und Vorrichtung zur Durchführung von Perforationsgängen in einem Bohrloch Expired - Lifetime EP0404669B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908309A FR2648509B1 (fr) 1989-06-20 1989-06-20 Methode et dispositif pour conduire des operations de perforation dans un puits
FR8908309 1989-06-20

Publications (2)

Publication Number Publication Date
EP0404669A1 EP0404669A1 (de) 1990-12-27
EP0404669B1 true EP0404669B1 (de) 1993-02-10

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EP90401733A Expired - Lifetime EP0404669B1 (de) 1989-06-20 1990-06-18 Verfahren und Vorrichtung zur Durchführung von Perforationsgängen in einem Bohrloch

Country Status (8)

Country Link
US (1) US5044437A (de)
EP (1) EP0404669B1 (de)
CA (1) CA2019421C (de)
DE (1) DE69000895T2 (de)
DK (1) DK0404669T3 (de)
ES (1) ES2040078T3 (de)
FR (1) FR2648509B1 (de)
NO (1) NO180651C (de)

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Also Published As

Publication number Publication date
EP0404669A1 (de) 1990-12-27
US5044437A (en) 1991-09-03
DE69000895T2 (de) 1993-05-27
DK0404669T3 (da) 1993-06-07
NO902698D0 (no) 1990-06-18
ES2040078T3 (es) 1993-10-01
CA2019421A1 (fr) 1990-12-20
CA2019421C (fr) 2000-05-30
FR2648509A1 (fr) 1990-12-21
DE69000895D1 (de) 1993-03-25
NO902698L (no) 1990-12-21
NO180651B (no) 1997-02-10
FR2648509B1 (fr) 1991-10-04
NO180651C (no) 1997-05-21

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