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EP0512331B1 - Dispositif pour nettoyer la zone proche du trou de sondage - Google Patents

Dispositif pour nettoyer la zone proche du trou de sondage

Info

Publication number
EP0512331B1
EP0512331B1 EP92106953A EP92106953A EP0512331B1 EP 0512331 B1 EP0512331 B1 EP 0512331B1 EP 92106953 A EP92106953 A EP 92106953A EP 92106953 A EP92106953 A EP 92106953A EP 0512331 B1 EP0512331 B1 EP 0512331B1
Authority
EP
European Patent Office
Prior art keywords
chamber
disposed
whirl chamber
whirl
channel
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
EP92106953A
Other languages
German (de)
English (en)
Other versions
EP0512331A1 (fr
Inventor
Rifner Wassilowitsch Ganijew
Robert Schakurowitsch Mufasalow
Remus Chusainowitsch Wasiliew
Jurij Petrowitsch Sacharow
Raschid Gabdulatifowitsch Muchutdinow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wave Tec GmbH
Original Assignee
Wave Tec GmbH
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 Wave Tec GmbH filed Critical Wave Tec GmbH
Publication of EP0512331A1 publication Critical patent/EP0512331A1/fr
Application granted granted Critical
Publication of EP0512331B1 publication Critical patent/EP0512331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B37/00—Methods or apparatus for cleaning boreholes or 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

  • the present device relates to devices for cleaning the zone near the borehole using hydrodynamic waves.
  • It is a device for cleaning the borehole zone (SM Godiev "Inspolzovanie vibratsii v. Dobyche nefti” (exploitation of vibrations in oil production), 1977, publisher “Nedra” (Moscow), p. 50, Fig. 27) known includes a hollow body with a hydrodynamic wave generating assembly disposed therein, which is a sleeve housed in the body at a minimum distance from its walls.
  • the sleeve is rotatably arranged about its axis in rolling bearings.
  • There are openings on the walls of the body and the sleeve which serve as channels for the passage of the liquid.
  • the body has radial and the sleeve tangential outlet channels.
  • a sleeve seal is arranged in the upper part between the body and the sleeve.
  • the outlet channels of the sleeve and the body lie in the same plane.
  • the device with risers is lowered into a borehole to the level of the arrangement of perforation openings.
  • a working fluid is injected through the risers.
  • the liquid flows by coming into the cavity of the sleeve, also in its tangentially arranged outlet channels. From them, the liquid flows into the radial channels of the body and from there into the annulus of the borehole.
  • the channels of the sleeve and the body are periodically closed and opened at a certain frequency.
  • the periodic covering of the channels in the zone near the borehole generates hydrodynamic fluid pressure pulses.
  • the amplitude and frequency hydrodynamic impulses depend on the pressure of the flushed fluid and the frequency of rotation of the sleeve around the body.
  • the known device has a complicated construction, which increases its manufacturing costs and reduces its operational safety, while the presence of the movable assemblies and parts in the construction causes their intensive mechanical wear and a reduction in the operating life of the device.
  • a device for cleaning the zone near the borehole according to the preamble of claim 1 is already known from GB-A-2 224 054.
  • the cavity formed by the swirl chamber and its outlet channel be made mushroom-shaped in order to be in the area outside the outlet channel to form an essentially annularly rotating vortex which spreads radially outwards with the distance from the outlet channel and which has a negative pressure in the center and generates a counterflow parallel to the longitudinal direction there.
  • This vortex, which spreads from the outlet channel has the task of cleaning cutting teeth, crushing rollers or the like which are arranged outside the outlet channel from the vortex chamber.
  • the invention has for its object to further improve such a device in terms of its cleaning effect in a simple manner.
  • the design of the assembly for generating hydrodynamic waves in the form of a swirl chamber with the tangentially arranged inlet channels makes it possible to generate hydroacoustic waves with a wide frequency spectrum for acting on a productive layer.
  • the use of the swirl chamber allows a vacuum zone, i.e. to create a depression in the borehole zone. All of this significantly improves the cleaning of the pore channels and increases the oil flow to the well.
  • the narrowing of the outlet channel of the swirl chamber is due to the fact that as the channel diameter decreases, the frequency of rotation of the liquid increases in proportion to the ratio of the diameter of the swirl chamber and the outlet nozzle, and accordingly the frequency of the wave radiation also increases.
  • the assembly for generating hydrodynamic waves is provided with at least one additional swirl chamber, which is arranged in the direction of flow in front of the swirl chamber and is also connected to the cavity of the hollow body by tangentially arranged inlet channels and has two conically tapering, oppositely directed outlet channels, which essentially have run at right angles to the longitudinal direction of the hollow body.
  • a toroidal cavity connected to the interior of the vortex chamber is made in the wall of the vortex chamber on the section of the arrangement of its outlet channel.
  • the toroidal resonance chamber in the wall of the vortex chamber serves to amplify the generated waves under the resonance conditions. Waves that are generated by a sharp edge of the inlet channel of the toroidal cavity also contribute to the amplification of the amplitude.
  • the radial-tangentian current hits the sharp edge at the entrance of the resonance chamber at a high speed, self-oscillations of low amplitude are excited, which produce cutting-edge sound waves whose frequency depends on the outflow speed and the density of the injected Liquid and the stiffness of the resonator wall itself is dependent.
  • the assembly for generating hydrodynamic waves is provided with a guide vane, which is arranged in the lower part of the vortex chamber in such a way that a rounded between the outer end face of the vortex chamber and the inner surface of the vane facing it Ring channel is formed.
  • the guide vane arranged near the end face of the wall of the vortex chamber forms an annular channel - nozzle - and forms an annular flow from the radial-tangential flow flowing out of the outlet channel and directs it upward through the annular space. This helps to improve the quality of the vacuum and the effect of depression on the zone near the borehole.
  • the tangentially arranged inlet channels of the additional swirl chamber are designed at an angle to their axis and are directed to opposite sides.
  • the cavity of the swirl chamber is spherical.
  • the choice of the shape of the swirl chamber in spherical shape is due to a high amplitude of the waves generated by spherical emitters working in the self-oscillation state with a periodic hydraulic self-locking of the outlet channel.
  • the purpose of equipping the vortex chamber with the conical waveguide is to prevent hydrodynamic and hydroacoustic cavitation wear on the central part of the head of the vortex chamber.
  • the conical waveguide brings the cavitation bubbles outside the vortex chamber.
  • the taper taper ⁇ of the waveguide must not be above 20 ', i.e. 0 ⁇ ⁇ 20 '.
  • the assembly for generating hydrodynamic waves is provided with a resonance chamber, the cavity of which is connected to the cavity of the swirl chamber and in which a piston with a rod is accommodated with the possibility of displacement in the longitudinal direction.
  • the tuning to the resonance frequency takes place by moving the piston by means of a worm rod and by changing the volume of the resonance chamber under the piston.
  • the device for cleaning the zone near the borehole which is provided with the swirl chamber according to the invention, makes it possible to carry out a complex borehole treatment in connection with thermal-physical-chemical processes and to increase the productivity and the oil release of a layer.
  • the device has a simple construction, is reliable and suitable for production.
  • the device according to the invention for cleaning the zone near the borehole contains a hollow body 1 (FIGS. 1 to 4) with an inlet channel 2. Inside the body 1, a swirl chamber 3 of an assembly for generating hydrodynamic waves with tangentially directed inlet channels 4 is arranged inside the body 1, a swirl chamber 3 of an assembly for generating hydrodynamic waves with tangentially directed inlet channels 4 is arranged.
  • the swirl chamber 3 has a conically tapering (funnel-shaped) outlet channel 5 for the outlet of a working medium.
  • the end face 6 of the chamber 3 is radially rounded, and a guide vane 8 is screwed onto it by means of screws 7 such that an annular channel 9 is formed between them, which communicates with the annular space of the bore.
  • An annular mixing chamber 11 is formed in the borehole between the chamber 3 and a casing column 10, while an annular diffuser 12 is formed between the body 1 and the casing column 10.
  • the channel 10, the mixing chamber 11 and the diffuser 12 form a jet pump, which generates a negative pressure in the working process and exerts a depression effect on a productive layer.
  • the device is centered in the borehole by ribs 13.
  • the device is connected to the casing column 14 by means of a conical thread.
  • FIG. 5 shows an embodiment of the assembly for generating hydrodynamic waves with two additional swirl chambers 16, 17, which are arranged perpendicular to the axis of the body 1.
  • the swirl chamber 17 is designed with two oppositely directed outlet channels 18.
  • the tangentially directed inlet channels 19 and 20 of the chambers 16 and 17 are at an angle to their axes and are directed to opposite sides.
  • the intersection of the tangential channels 19 and 20 can be circular or slit-shaped.
  • a toroidal resonance chamber can be built into the wall of chamber 3 (FIGS. 6, 7) 21 with a combined annular inlet and outlet channel 22 (FIG. 6) and with a sharp edge 23.
  • the swirl chamber 3 In order to keep cavitation wear of the swirl chamber 3 (FIGS. 8, 9) lower, it is provided with a conical waveguide 24.
  • the swirl chamber 3 (FIG. 10) is provided with a resonance chamber 25, in which a piston 26 with a rod 27 is accommodated.
  • the rod 27 is connected to the resonance chamber 25 by means of a screw connection.
  • the cavity of the swirl chamber 3 (FIG. 11) is designed in a spherical shape.
  • the device according to the invention for cleaning the zone near the borehole works as follows.
  • the working medium liquid, gas or multi-phase liquid
  • the pipes 14 (FIG. 1) into the inlet channel 2, from where it flows through the tangentially directed channels 4 into the swirl chamber 3.
  • the liquid begins to circulate at a high rotation frequency (within the range of 10 3 to 1.5.10 3 s -1 ).
  • 5 hydroacoustic waves are generated in the outlet channel.
  • the turbulent pulsating flow from the outlet channel 5 is conveyed at a high speed in tangentially divergent directions, as indicated in FIGS. 1 and 12, and flows into the ring channel 9.
  • the liquid is directed upwards from the annular channel 9 at a high speed and comes into an annular space - a mixing chamber 11 - and entrains the injected liquid from the zone near the borehole.
  • the velocities of the flows to be mixed are balanced, and the kinetic energy of the working flow is partly converted into the potential energy of the mixed flow.
  • the further conversion of the kinetic energy of the mixed flow into one Pressure energy occurs in the cavity of the diffuser 12.
  • the effect of a jet pump is realized in the annular space, and an additional depression is created in the zone of a productive layer.
  • the productive layer is exposed to both a depression and a wave effect. This creates mechanical activation processes in the zone near the borehole with signs of various nonlinear effects, the most important of which is the occurrence of hydrodynamic and hydroacoustic cavitation.
  • the turbulently pulsating current is conveyed from the outlet channel 5 of the vortex chamber 3 in tangentially divergent directions and runs onto the sharp edge 23.
  • the leading edge 23 hydroacoustic cutting-tone waves of low amplitude and self-excited bending vibrations of the edge 23 themselves (as with plate radiators) are excited. 6, the vibration of the leading edge 23 itself is indicated by dashed lines.
  • the radial-tangential flow partly comes into the toroidal resonance chamber 21.
  • the bending vibrations of the leading edge 23 cause a pressure pulsation in the toroidal resonance chamber 21.
  • the ring channel 22 serves for the entry and exit of the liquid.
  • the current emerging from the toroidal resonance chamber 21 interrupts the incoming current with the oscillation frequency of the leading edge 23, which is why hydroacoustic waves are additionally generated at the edge 23.
  • the hydroacoustic waves and the cavitation effects in the zone near the borehole lead to the destruction of various deposits on the borehole wall and to the cleaning of the blocked pore channels in an oil layer.
  • the action of depression activates the development of cavitation, accelerates it the inflow of stratified petroleum to the borehole contributes to the removal of cleaning products from the pore channels.
  • the wave field has a significant effect on reducing the viscosity of the layer fluid and petroleum, while the simultaneous depression effect increases their inflow to the borehole.
  • the device according to the invention can be used to clean the zone of a layer near the borehole in press-in bores in order to increase the absorption capacity of the layer. Without any design changes, it can be used as a shaft disperser, emulsifier, homogenizer of multi-phase liquids, for dispersing the drilling fluid and the cement slurry directly in the bore when carrying out the technological operations.

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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)
  • Cleaning By Liquid Or Steam (AREA)
  • Physical Water Treatments (AREA)
  • Cyclones (AREA)

Claims (9)

  1. Dispositif de nettoyage d'une zone proche d'un trou de forage, qui comporte un corps creux (1) avec un ensemble placé dans celui-ci destiné à produire des ondes hydrodynamiques, dans lequel une chambre de tourbillonnement (3) communique avec la cavité du corps creux (1) par des canaux d'entrée (4) disposés tangentiellement et comporte, dans la direction longitudinale, un canal de sortie (5) se rétrécissant coniquement, et dans lequel les canaux d'entrée (4) se trouvent dans la zone du côté opposé au canal de sortie (5),
    caractérisé
    en ce que l'ensemble comporte au moins une chambre de tourbillonnement (16, 17) supplémentaire, qui est disposée dans le sens d'écoulement, devant la chambre de tourbillonnement (3) et communique avec la cavité du corps creux (1), également par des canaux d'entrée (19, 20) disposés tangentiellement, et comporte deux canaux de sortie (18) se rétrécissant coniquement, orientés en sens contraires, qui s'étendent sensiblement à angle droit par rapport à la direction longitudinale du corps creux (1).
  2. Dispositif selon la revendication 1,
    caractérisé
    en ce que les canaux d'entrée (19, 20), disposés sensiblement tangentiellement, sont réalisés sous un angle par rapport à leur axe et sont orientés vers des côtés opposés.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé
    en ce que deux chambres de tourbillonnement (16, 17) supplémentaires sont placées à l'intérieur du corps creux, devant la chambre de tourbillonnement (3), placée à l'extrémité de celui-ci.
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé
    en ce que la cavité de la chambre de tourbillonnement (3) est sphérique.
  5. Dispositif selon l'une des revendications précédentes,
    caractérisé
    en ce que dans la paroi de la chambre de tourbillonnement (3), sur la portion de la disposition de son canal de sortie (5), est placée une chambre de résonance (21) toroïdale, dont le canal d'entrée (22) est placé dans la zone du canal de sortie (5) hors de la chambre de tourbillonnement (3), et forme en même temps son canal de sortie.
  6. Dispositif selon la revendication 5,
    caractérisé
    en ce que le canal d'entrée (22) hors de la chambre de résonance (21) présente une arête d'entrée vive (23).
  7. Dispositif selon l'une des revendications précédentes,
    caractérisé
    en ce que dans la partie inférieure de la chambre de tourbillonnement (3) est placée une pale de guidage (8) arrondie, de telle sorte qu'entre la face frontale extérieure de la chambre de tourbillonnement (3) et la face intérieure, tournée vers celle-ci, de la pale de guidage (8), est formé un canal annulaire (9).
  8. Dispositif selon l'une des revendications précédentes,
    caractérisé
    en ce que la chambre de tourbillonnement (3) présente, dans la zone du côté opposé au canal de sortie (5), un réflecteur (24) de forme conique creuse, s'étendant sensiblement dans la direction longitudinale, dont le rétrécissement conique de ses faces latérales résulte de la relation Θ' < ϕ < 20°
    Figure imgb0006
     dans laquelle ϕ est le rétrécissement conique des faces latérales du réflecteur (24) et
    Θ' est l'angle de glissement critique d'une onde produite dans la chambre de tourbillonnement (3), arrivant sur le réflecteur (24).
  9. Dispositif selon l'une des revendications précédentes,
    caractérisé
    en ce que la cavité de la chambre de tourbillonnement (3) communique avec une chambre de résonance (25), dans laquelle se trouve un piston (26), déplaçable dans la direction longitudinale, avec une tige (27).
EP92106953A 1991-05-06 1992-04-23 Dispositif pour nettoyer la zone proche du trou de sondage Expired - Lifetime EP0512331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU4928469 1991-05-06
SU4928469 1991-05-06

Publications (2)

Publication Number Publication Date
EP0512331A1 EP0512331A1 (fr) 1992-11-11
EP0512331B1 true EP0512331B1 (fr) 1996-09-18

Family

ID=21570312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106953A Expired - Lifetime EP0512331B1 (fr) 1991-05-06 1992-04-23 Dispositif pour nettoyer la zone proche du trou de sondage

Country Status (4)

Country Link
US (1) US5311955A (fr)
EP (1) EP0512331B1 (fr)
JP (1) JPH06257371A (fr)
DE (1) DE59207154D1 (fr)

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RU2553687C1 (ru) * 2014-04-15 2015-06-20 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Устройство для импульсной закачки жидкости в пласт

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RU2423606C2 (ru) * 2009-06-29 2011-07-10 Эдуард Афанасьевич Буторин Устройство воздействия на продуктивные пласты
KR101145189B1 (ko) * 2009-07-16 2012-05-14 (주)동우기계 굴착장치
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RU2448242C1 (ru) * 2010-12-07 2012-04-20 Анатолий Георгиевич Малюга Способ интенсификации притока углеводородов из продуктивных пластов скважин и кавитирующее устройство для его осуществления
RU2454527C1 (ru) * 2010-12-27 2012-06-27 Общество с ограниченной ответственностью "ЛУКОЙЛ-Инжиниринг" (ООО "ЛУКОЙЛ-Инжиниринг") Устройство для акустического воздействия на продуктивный пласт
US20160040504A1 (en) * 2014-08-08 2016-02-11 Baker Hughes Incorporated Suction Nozzle
RU171177U1 (ru) * 2017-02-08 2017-05-23 Рустам Рафаэльевич Саиткулов Устройство для виброволнового воздействия на продуктивные пласты водоносных и нефтегазовых скважин
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Publication number Priority date Publication date Assignee Title
RU2400615C1 (ru) * 2009-07-24 2010-09-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Устройство для импульсной закачки жидкости в пласт
RU2553687C1 (ru) * 2014-04-15 2015-06-20 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Устройство для импульсной закачки жидкости в пласт

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US5311955A (en) 1994-05-17
DE59207154D1 (de) 1996-10-24
JPH06257371A (ja) 1994-09-13
EP0512331A1 (fr) 1992-11-11

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