WO2016208050A1 - Compresseur de fond de trou, système de récupération de ressources et procédé de gestion de système de récupération de ressources - Google Patents

Compresseur de fond de trou, système de récupération de ressources et procédé de gestion de système de récupération de ressources Download PDF

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Publication number
WO2016208050A1
WO2016208050A1 PCT/JP2015/068445 JP2015068445W WO2016208050A1 WO 2016208050 A1 WO2016208050 A1 WO 2016208050A1 JP 2015068445 W JP2015068445 W JP 2015068445W WO 2016208050 A1 WO2016208050 A1 WO 2016208050A1
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WO
WIPO (PCT)
Prior art keywords
compressor
energy
recovery system
resource recovery
transmission mechanism
Prior art date
Application number
PCT/JP2015/068445
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English (en)
Japanese (ja)
Inventor
青池　聡
Original Assignee
株式会社日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to PCT/JP2015/068445 priority Critical patent/WO2016208050A1/fr
Publication of WO2016208050A1 publication Critical patent/WO2016208050A1/fr

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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/128—Adaptation of pump systems with down-hole electric drives
    • 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

Definitions

  • the present invention relates to a downhole compressor installed underground, a resource recovery system that supplies power to the compressor from the ground, and a method of handling the resource recovery system.
  • Oil and natural gas are buried in the formation where the impermeable bedrock layer is curved, and there are many wells (oil fields and gas fields) buried at a depth of 1000 m or more from the ground. To do. In oil and natural gas wells, the pressure of the buried formations (buried formations) is high, so oil and natural gas often blow out from the vertical holes communicating from the ground to the buried formations. However, as production progresses and the amount of reserves decreases, the pressure of the buried layer decreases and self-injection stops. For this reason, measures such as introducing a compressor deep underground in the vertical hole to increase the pressure of the surrounding fluid and ejecting oil and natural gas to the ground are being taken.
  • a turbo pump in order to transfer a liquid or a gas medium to the ground, a turbo pump is arranged in a transfer pipe connected to, for example, a well at a depth of 2000 m or more in a vertical hole communicating from the ground to the buried layer.
  • a system for transferring a liquid or gas medium to the ground by driving a pump is described.
  • the turbo pump is powered by a cable connected from the ground.
  • a wired power cable is physically connected to a compressor that is inserted deep underground in a vertical hole, and power is supplied from a ground power source.
  • the vertical hole is a double pipe composed of an outer cylinder and an inner cylinder
  • the feeding cable is band-fixed to the outer surface of the inner cylinder of the double pipe at a constant pitch, and at the compressor installation position, the inner pipe is compressed.
  • the underground temperature increases as the depth from the ground increases.
  • the buried layer in which oil or natural gas is buried has a depth of 1000 m or more from the ground, the buried layer becomes a high temperature environment exceeding 100 ° C. Furthermore, since oil fields and natural gas fields contain corrosive gases such as hydrogen sulfide, the buried layer is a severe corrosive environment. For this reason, compressors installed in inner cylinders that become oil and natural gas flow paths and are exposed to severe corrosive environments are considered to have a high risk of failure due to corrosion. Is assumed to be expensive.
  • This invention is made in view of the said subject, The objective is to shorten the construction time required for replacement
  • the present invention is configured by a double pipe configured from an outer cylinder and an inner cylinder and communicating from the ground to an underground well base, and is installed in the well base inside the inner pipe of the double pipe.
  • the compressor replacement period can be greatly shortened, the operating rate of the well source can be improved.
  • summary of the wireless electric power feeding system which supplies electric power to the compressor installed in a basement by a non-contact system.
  • Example 1 a wireless power feeding system that supplies electric power from the ground to a compressor that pressurizes a fluid installed at a depth exceeding 1000 m from the ground will be described with reference to FIGS.
  • the wireless power feeding system that supplies power to the compressor 4 includes at least a double pipe 3 that includes an outer cylinder 1 and an inner cylinder 2 and communicates to a depth exceeding 1000 m from the ground, and a duplex having a depth exceeding 1000 m from the ground.
  • Compressor 4 installed in the inner tube 2 for boosting the fluid, AC power supply 5 for supplying electricity from the ground, and installed outside the inner tube 2 for the double tube having a depth exceeding 1000 m from the ground.
  • the wireless power supply primary coil 6, the wireless power supply secondary coil 7 provided in the compressor, and the AC power supply 5 and the power supply cable 8 that electrically connects the wireless power supply primary coil 6 are configured.
  • the power supply cable 8 between the AC power supply 5 and the primary coil 6 for wireless power supply is installed on the outer surface of the inner cylinder 2 by being bound with a metal strip 9 or the like.
  • a wattmeter 29 is provided which measures the electromotive force generated in the secondary coil 7 for wireless power feeding provided inside the compressor.
  • FIG. 5 shows a part of the detailed structure of the compressor fixing mechanism 10.
  • the required number of compressor fixing mechanisms 10 are provided at the positions of the upper end portion and the lower end portion inside the compressor.
  • FIG. 5 shows a part of them.
  • a compressor fixing mechanism 10 for pushing out a fixing jig 21 to a compressor fixing structure 20 on the inner surface of the inner tube of the double pipe.
  • the compressor fixing mechanism 10 includes a screw shaft 22, a nut 23, a screw shaft. It is comprised by the drive motor 24 which rotates these, and the flame
  • the screw shaft 22 is provided with a screw thread symmetrically with respect to the paper surface with the central portion as a boundary, and the fixing jig 21 can be pushed out by rotating the screw shaft 22 by a drive motor 24.
  • a structure in which a recess is provided on the inner surface of the inner tube 2 of the double tube 3 can be adopted.
  • the fixing jig 21 may be a protrusion having a shape that can be inserted into a hollow shape provided on the inner surface of the inner tube 2 of the double tube 3.
  • a wire rope 14 for pulling the compressor 4 a winch 18 that winds and sends the wire rope 14, extra cables and wires.
  • a reel 19 for collecting the rope as needed, a power source and signal cable 15 for transmitting power and control signals to the compressor transfer device 11, and a power source and control device 16 for supplying power and control signals to the compressor transfer device.
  • the compressor transfer device 11 includes a drive mechanism 12, and the drive mechanism is in contact with the inner cylinder 2 by a tire or the like so as to be able to travel on the inner surface of the inner cylinder 2 of the double pipe.
  • the double pipe 3 provided up to a depth of more than 1000 m from the ground is not necessarily required to pass through the double pipe having an inclination depending on the place, not only in a place provided vertically. This is to guide the well 4 to the well so that the compressor 4 does not stop in the middle of 3.
  • the compressor transfer device 11 is used because there is a possibility that the compressor 4 may be difficult to enter the well base due to the pressure difference.
  • the compressor transfer device 11 and the compressor 4 are connected by a gripping mechanism 13 and a carry-in / out lifting jig 17.
  • the wireless power feeding to the compressor 4 is caused by causing a magnetic field fluctuation generated by supplying an alternating current to the wireless power feeding primary coil 6 to the inside of the wireless power feeding secondary coil 7. This is realized by generating electromotive force by electromagnetic induction.
  • the supply of alternating current to the wireless power feeding primary coil 6 is supplied from the alternating current power source 5 through the feeding cable 8.
  • the wireless power supply may be performed in a non-contact manner, and is not limited to the coil of this embodiment. That is, the wireless power feeding primary coil 6 and the wireless power feeding secondary coil 7 may be configured so as to be separable, and there may be no space between the two coils so that they are substantially in contact with each other. Absent.
  • the control of the compressor 4 is performed by, for example, using a control signal of the control device 35 and an operation state signal of the compressor 4 using a compressor control signal cable 36 and an infrared transmission / reception window 38 laid in the same manner as the power supply cable 8. It implement
  • FIG. In this case, the compressor 4 also needs to be provided with infrared communication means and an infrared transmission / reception window 37. It is necessary to match the positions of the primary coil 6 for wireless power feeding and the secondary coil 7 for wireless power feeding and the positions of the infrared receiving and transmitting windows 37 and 38 of the compressor 4 and the inner cylinder 2 with high accuracy. For this reason, high positioning accuracy is requested
  • FIG. 2 A method for installing the compressor at a depth exceeding 1000 m from the ground with high positioning accuracy will be described with reference to FIGS. 2, 3, and 4 and FIG. 8 (step diagram) of the flow.
  • the compressor 4 is attached to the compressor transfer device 11 and hung with a wire rope 14 to be inserted into the inner tube 2 of the double pipe 3, Lower to the deep underground (step 102).
  • the compressor transfer device 11 is configured to be able to travel by a drive mechanism 12 that can move at least inside the inner tube of the double pipe, so that the compressor 4 can reach the predetermined position of the well without stopping midway. It is possible to guide.
  • the compressor 4 is gripped by a gripping mechanism 13 that grips a carry-in / out suspension jig 17 of the compressor.
  • the gripping mechanism 13 is provided with a plug 25 for supplying power to the compressor 4 and transmitting / receiving control signals.
  • the compressor 4 is also provided with a socket 26 to which the plug 25 is connected, and the measurement result of the electromotive force of the secondary coil 7 for wireless power feeding is transmitted.
  • the compressor transfer device 11 is connected to the ground power supply and control device 16 through a power supply and signal cable 15, and transmits the electromotive force measurement result of the secondary coil 7 for wireless power feeding to the control device, and the drive mechanism. 12 and the gripping mechanism 13 are operated. At this time, an alternating current is supplied from the ground AC power source 5 to the primary coil 6 for wireless power feeding, and a magnetic field fluctuation is generated in the vicinity of the primary coil 6 for wireless power feeding.
  • Step 103 the fixing jig 21 is pushed out from the compressor fixing mechanism 10 to the compressor fixing structure 20 on the inner surface of the inner cylinder 2 of the double pipe 3 to fix the compressor 4 inside the inner cylinder 2 (Step 104).
  • the measurement value within a range in which the electric power that can sufficiently operate the compressor 4 can be supplied may be detected and fixed as a predetermined value.
  • the compressor 4 can be positioned with high positional accuracy.
  • the gripping mechanism 13 of the compressor transfer device 11 is separated from the carry-in / out lifting jig 17 of the compressor, and the compressor transfer device 11 is recovered as shown in FIG. To do.
  • Compressor is operated for a predetermined period to produce oil and natural gas (step 105). After a predetermined period, the compressor 4 is recovered for periodic inspection or when a failure occurs.
  • the compressor 4 When recovering the compressor 4, the compressor 4 is recovered by reversing the above-described compressor installation procedure. Specifically, first, the drive mechanism 12 is driven to transfer the compressor transfer device 11 to the installation position of the compressor 4 inside the inner tube 2 of the double pipe 3, and the gripping mechanism 13 of the compressor transfer device 11. The gripping jig 17 for carrying in and out of the compressor is gripped. Thereafter, the fixing jig of the compressor fixing mechanism 10 is pulled back from the compressor fixing structure 20 on the inner surface of the inner cylinder 2 of the double pipe 3 to release the fixing, and through the inside of the inner cylinder 2 of the double pipe 3 together with the compressor transfer device 11. The compressor 4 is transferred to the ground (step 106).
  • the compressor fixing mechanism is released by operating the drive motor 24 of the compressor fixing mechanism by connecting the plug 25 provided in the compressor transfer device 11 to the socket 26 provided in the compressor and supplying power. To release.
  • electricity is supplied via the compressor transfer device 11 for releasing the compressor fixing mechanism. This is not only for the compressor 4 but also for wireless power feeding in a harsh environment of 1000 m or more underground. It is also assumed that the primary coil 6 and the secondary coil 7 for wireless power feeding will fail, and if the power is made to depend only on the wireless power feeding coil, the compressor 4 cannot be recovered and may be recovered together with the inner cylinder 2. In order to avoid this, power is supplied via another route to improve the reliability of the system. In addition, as shown in FIG.
  • the compressor fixing mechanism is separately configured, and the screw shaft 22 of the compressor fixing mechanism is extended to directly operate the screw shaft by the screw shaft rotating operation mechanism 28 provided in the compressor transfer device 11. You may comprise. Thereby, since it can be provided only by a mechanical mechanism without using an electronic component, it is possible to make the device more resistant to failure without using an electrical component.
  • a wired power cable is physically connected to the compressor and power is supplied from the ground. Therefore, to replace the compressor, replace the vertical hole (double pipe inner cylinder) (
  • the wired cable is not physically connected to the compressor, the vertical hole (inner cylinder of the double pipe) is required.
  • the compressor can be replaced without replacement).
  • the exchange period of a compressor can be shortened significantly, the operating rate of a well source can be improved.
  • the secondary coil for wireless power feeding is housed in the compressor, the terminal portion of the electric wire can be isolated from the corrosive environment, so that the corrosion resistance of the compressor is also improved.
  • the compressor can be installed at a predetermined position with high positioning accuracy in a remote place that is more than 1000 m underground.
  • Example 2 will be described with reference to FIG. The description of the parts having the same configuration as in Example 1 is omitted.
  • a stator coil 30 and a rotor (permanent magnet) 31 are provided in place of the wireless power feeding primary coil 6 and the wireless power feeding secondary coil 7.
  • the rotor 31 is directly fixed to the rotary shaft 32 of the compressor, and the rotary blades 33 of the compressor are fixed to the rotary shaft.
  • the compressor including the stator coil provided in the double tube can be regarded as a compressor.
  • the wattmeter 29 replaces the magnetic field measuring device 34 for measuring the strength of the magnetic field, whereby the positional relationship between the rotor 31 of the compressor and the stator coil 30 provided in the double tube. Can be accurately grasped.
  • this embodiment can selectively replace only a portion that is exposed to a harsh environment and has a high failure probability, and can further improve the operating rate of the well source.
  • the control mechanism can be out of the compressor, so that the system is more resistant to failure.
  • the primary coil 6 for wireless power feeding and the secondary coil 7 for wireless power feeding, the stator coil 30 and the rotor 31 are used to transmit electric power and driving force.
  • the present invention is not limited to this as long as it can transmit energy (electricity, magnetic field, etc.) in a substantially non-contact manner.
  • the non-contact method is not limited, for example, as long as the primary coil 6 for wireless power feeding and the secondary coil 7 for wireless power feeding are configured to be separable, and there is no space between them.
  • this invention is not limited to the above-mentioned Example, Various modifications are included.
  • the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
  • Plug 26 ... Socket 27 ... Drive motor 28 of compressor transfer device ... Screw shaft rotation operating mechanism 29 ... Wattmeter 30 ... Stator coil 31 . Rotor (permanent magnet) 32 ... Rotary shaft 33 of compressor ... Rotary blade 34 of compressor ... Magnetic field measuring device 35 ... Control device 36 ... Signal cables 37 and 38 for compressor control.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention aborde les problèmes consistant à réduire le temps de travail nécessaire pour remplacer un compresseur et à améliorer la vitesse de fonctionnement d'une tête de puits. Afin de résoudre ces problèmes, la présente invention est caractérisée en ce qu'elle comprend : un tuyau à double paroi qui est constitué d'un tube externe et d'un tube interne et qui s'étend depuis un espace situé au-dessus du sol jusqu'à une tête de puits qui est située en dessous du sol ; un compresseur qui est installé dans la tête de puits à l'intérieur du tube interne du tuyau à double paroi et qui met sous pression un fluide ; un bloc d'alimentation en énergie qui fournit de l'énergie ; un premier mécanisme de transmission d'énergie qui est disposé dans le tuyau à double paroi et qui transmet de l'énergie au moyen d'un procédé sans contact ; un second mécanisme de transmission d'énergie qui est disposé dans le compresseur et transfère l'énergie transmise à partir du premier mécanisme de transmission d'énergie au moyen d'un procédé sans contact ; et un câble qui connecte électriquement le bloc d'alimentation en énergie et le premier mécanisme de transmission d'énergie.
PCT/JP2015/068445 2015-06-26 2015-06-26 Compresseur de fond de trou, système de récupération de ressources et procédé de gestion de système de récupération de ressources WO2016208050A1 (fr)

Priority Applications (1)

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PCT/JP2015/068445 WO2016208050A1 (fr) 2015-06-26 2015-06-26 Compresseur de fond de trou, système de récupération de ressources et procédé de gestion de système de récupération de ressources

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PCT/JP2015/068445 WO2016208050A1 (fr) 2015-06-26 2015-06-26 Compresseur de fond de trou, système de récupération de ressources et procédé de gestion de système de récupération de ressources

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901069A (en) * 1987-07-16 1990-02-13 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
US5008664A (en) * 1990-01-23 1991-04-16 Quantum Solutions, Inc. Apparatus for inductively coupling signals between a downhole sensor and the surface
US5394823A (en) * 1992-12-28 1995-03-07 Mannesmann Aktiengesellschaft Pipeline with threaded pipes and a sleeve connecting the same
JPH08505277A (ja) * 1992-10-20 1996-06-04 エレクトリック パワー リサーチ インスチテュート インコーポレイテッド 無接触電力供給システム
JP2012504387A (ja) * 2008-09-27 2012-02-16 ウィトリシティ コーポレーション 無線エネルギー伝達システム
US20130098632A1 (en) * 2011-10-24 2013-04-25 Zeitecs B.V. Gradational insertion of an artificial lift system into a live wellbore
US20140224538A1 (en) * 2011-09-20 2014-08-14 Imdex Global B.V. Borehole surveying tool deployment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901069A (en) * 1987-07-16 1990-02-13 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
US5008664A (en) * 1990-01-23 1991-04-16 Quantum Solutions, Inc. Apparatus for inductively coupling signals between a downhole sensor and the surface
JPH08505277A (ja) * 1992-10-20 1996-06-04 エレクトリック パワー リサーチ インスチテュート インコーポレイテッド 無接触電力供給システム
US5394823A (en) * 1992-12-28 1995-03-07 Mannesmann Aktiengesellschaft Pipeline with threaded pipes and a sleeve connecting the same
JP2012504387A (ja) * 2008-09-27 2012-02-16 ウィトリシティ コーポレーション 無線エネルギー伝達システム
US20140224538A1 (en) * 2011-09-20 2014-08-14 Imdex Global B.V. Borehole surveying tool deployment
US20130098632A1 (en) * 2011-10-24 2013-04-25 Zeitecs B.V. Gradational insertion of an artificial lift system into a live wellbore

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