EP2877683B1 - System und verfahren zum aufbrechen von öl- und gasbohrungen - Google Patents

System und verfahren zum aufbrechen von öl- und gasbohrungen Download PDF

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Publication number
EP2877683B1
EP2877683B1 EP13766030.4A EP13766030A EP2877683B1 EP 2877683 B1 EP2877683 B1 EP 2877683B1 EP 13766030 A EP13766030 A EP 13766030A EP 2877683 B1 EP2877683 B1 EP 2877683B1
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EP
European Patent Office
Prior art keywords
sleeve
port
base pipe
sliding sleeve
fracking
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Not-in-force
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EP13766030.4A
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English (en)
French (fr)
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EP2877683A1 (de
Inventor
Kristian Brekke
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Flowpro Well Technology As
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Flowpro Well Technology As
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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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
    • 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
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures

Definitions

  • This disclosure relates to a fracturing system and method for acquiring oil and gas.
  • Multi-stage fracking is a method that involves pumping large amounts of pressurized water or gel, a proppant and/or other chemicals into the wellbore to create discrete multiple fractures into the reservoir along the wellbore.
  • proppant fracturing usually involves multiple steps and requires several tools in order to be performed successfully.
  • Such practice that will allow even distribution of proppant between fractures highly depends on setting, plugs between the fracture stages or using frac balls of increasing sizes.
  • plugs are either set after each fracture has been perforated and pumped, or frac balls are dropped from the surface to successively open fracturing valves placed along the well.
  • balls of different diameters are dropped into the well corresponding to a specific fracturing valve's seat. At a point in the well, the ball will no longer pass through due to a decrease in well diameter.
  • fracturing can take place. After fracturing, the plugs must be drilled out and the balls must be recovered.
  • US 2012/0305265 A1 describes cluster opening sleeves for wellbore, allowing for isolation of segments of a wellbore for sequential treatment of the isolated segment.
  • US 2004/163820 A1 describes a bi-directional ball seat system for controlling flow in hydrocarbon wells.
  • WO 2013/169790 A1 relates to a seat assembly with counter for isolating fracture zones in a well.
  • the seat assembly are provided with a rotary indexing system allowing a predetermined number of plugs to pass through the assembly.
  • the present invention relates to a well fracturing system according to claim 1.
  • the invention relates to a method of fracturing a well according to claim 12.
  • Preferred embodiments are respectively disclosed in claims 2-11 and 13-14.
  • FIG. 1A illustrates a side view of a base pipe 100.
  • Base pipe 100 can be connected as a portion of a pipe string.
  • base pipe 100 can be a cylindrical material that can comprise different wall openings and/or slots.
  • Base pipe 100 wall openings can comprise insert port 101, fracturing port 102, and/or production port 103.
  • Insert port 101 can be made of one or more small openings in a base pipe 100.
  • Fracturing port 102 can also be made of one or more openings.
  • production port 103 can be a plurality of openings in base pipe 100.
  • Figure 1B illustrates a front view of base pipe 100 further comprising a chamber 104.
  • Chamber 104 can be a cylindrical opening or a space created inside base pipe 100.
  • As such chamber 104 can be an opening that can allow material, such as frac fluid or hydrocarbons to pass through.
  • Figure 1C illustrates a cross sectional view of a base pipe 100. Each wall opening discussed above can be circularly placed around base pipe 100.
  • FIG. 2A illustrates a sliding sleeve 200 connected to a fixed sleeve 205 by an actuator 206, and in line with an outer ring 207.
  • sliding sleeve 200 can be a cylindrical tube that can comprise fracturing port 102.
  • fracturing port can have a first portion within base pipe 100 and a second portion within sliding sleeve 200.
  • Figure 2B illustrates a front view of a sliding sleeve 200 further comprising comprising an outer chamber 201.
  • outer chamber 201 can be an opening larger than chamber 104. As such, outer chamber 201 can be large enough to house base pipe 100.
  • Figure 2C illustrates a cross sectional view of a sliding sleeve 200.
  • Sliding sleeve 200 can comprise a first sleeve 202 and a second sleeve 203.
  • First sleeve 202 and second sleeve 203 can be attached through one or more curved sheets 204, the spaces between each curved sheet 204 defining a portion of fracturing port 102.
  • Inner surface of first sleeve 202 can have a bottleneck void, or any other void within the inner surface.
  • the void can extend radially around the complete inner diameter of base pipe 100, partially around the inner diameter, or locally. If completely around the inner diameter, the ends of inner surface can have a smaller diameter than the void.
  • Figure 2D illustrates a cross sectional view of a sliding sleeve 200 further comprising fixed sleeve 205, and actuator 206.
  • actuator 206 can be a biasing device.
  • biasing device can be a spring.
  • actuator can be bidirectional and/or motorized.
  • second sleeve 203 of sliding sleeve 200 can be attached to fixed sleeve 205 using actuator 206.
  • sliding sleeve 200 can be pulled towards fixed sleeve 205, thus compressing, or otherwise load actuator 206 with potential energy. Later actuator 206 can be released, or otherwise instigated, pushing sliding sleeve 200 away from fixed sleeve 205.
  • Figure 3A illustrates a peripheral view of outer ring 207.
  • outer ring 207 can be a solid cylindrical tube forming a ring chamber 301, as seen in figure 3B .
  • outer ring 207 can be an enclosed solid material forming a cylindrical shape.
  • Ring chamber 301 can be the space formed inside outer ring 207.
  • ring chamber 301 can be large enough to slide over base pipe 100.
  • valve casing 400 can be a cylindrical material, which can comprise fracturing port 102, and production port 103.
  • fracturing port 102 can be a plurality of openings circularly placed around valve casing 400, as seen in Figure 4B .
  • production port 103 can be one or more openings placed around valve casing 400, as seen in Figure 4C .
  • Figure 5 illustrates a fracturing valve 500 in fracturing mode.
  • fracturing valve 500 can comprise base pipe 100, sliding sleeve 200, outer ring 207, and/or valve casing 400.
  • base pipe 100 can be an innermost layer of fracturing valve 500.
  • a middle layer around base pipe 100 can comprise outer ring 207 fixed to base pipe 100 and sliding sleeve 200, where fixed sleeve 205 is fixed to base pipe 100.
  • Fracturing valve 500 can comprise valve casing 400 as an outer later.
  • Valve casing 400 can, in one embodiment, connect to outer ring 207 and fixed sleeve 205.
  • fracturing port 102 In a fracturing position, fracturing port 102 can be aligned and open, due to the relative position of base pipe 100 and sliding sleeve 200.
  • Fracturing valve 500 can further comprise a frac ball 501 and one or more stop balls 502.
  • stop ball 502 can rest in insert port 101.
  • actuator 206 can be in a closed state, pushing stop ball 502 partially into chamber 104.
  • frac ball 501 can be released from the surface and down the well.
  • Frac ball 501 will be halted at insert port 101 by any protruding stop balls 502 while fracturing valve 500 is in fracturing mode.
  • the protruding portion of stop ball 502 can halt frac ball 501.
  • fracturing port 102 will be open, allowing flow of proppant from chamber 104 through fracturing port 102 and into a formation, thereby allowing fracturing to take place.
  • Figure 6 illustrates one example of an impedance device counteracting actuator 206, in an embodiment where actuator 206 is a biasing device, such as a spring.
  • an erosion device in the form of a string 601
  • String 601 can connect sliding sleeve 200 with base pipe 100. While intact, string 601 can prevent actuator 206 from releasing. Once the string 601 is broken, broken, actuator 206 can push sliding sleeve 200.
  • One method of breaking string 601 can be by pushing a corrosive material reactive with string through fracturing port, as corrosive material can deteriorate string 601 until actuator 206 can overcome its impedance.
  • Figure 7 illustrates fracturing valve 500 in production mode.
  • fracturing port 102 can close and production port 103 can open.
  • frac ball 501 can push stop balls 502 back into the inner end of first sleeve 202, which can further allow frac ball 501 to slide through base pipe 100 to another fracturing valve 500.
  • production port 103 is opened, extraction of oil and gas can start.
  • production ports can have a check valve to allow fracturing to continue downstream without pushing frac fluid through the production port.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Check Valves (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Earth Drilling (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Claims (14)

  1. System zum Aufbrechen einer Bohrung, umfassend ein Basisrohr (100), das einen ersten Fracking-Öffnungsabschnitt (102) umfasst, und eine Schiebehülse (200), die einen zweiten Fracking-Öffnungsabschnitt (102) umfasst und um das Basisrohr herum angeordnet ist, wobei die Schiebehülse (200) in eine erste und eine zweite Position verfahrbar ist, dadurch gekennzeichnet,
    dass das Basisrohr (100) eine Einführöffnung (101) umfasst, die eine Anschlagkugel (502) aufnimmt, wobei die Anschlagkugel (502) teilweise in eine Kammer (104) des Basisrohrs (100) hineinragt; und dass die Schiebehülse (200) eine erste Hülse (202) und eine zweite Hülse (203) umfasst, wobei die erste Hülse eine Innenfläche umfasst, wobei die Innenfläche einen Leerraum umfasst, wobei der Leerraum auf einer Oberfläche des Basisrohres aufliegt, die die Einführöffnung nicht umfasst, was verhindert, dass die Anschlagkugel (502) die Kammer (104) des Basisrohres (100) verlässt, wenn sich die erste Hülse (202) in ihrer ersten Position befindet, und wobei der Leerraum über der Einführöffnung (101) aufliegt, wobei die Anschlagkugel (502) in der Lage ist, die Kammer (104) des Basisrohrs (100) zu verlassen, um in den Leerraum zu gelangen, wenn sich die erste Hülse in ihrer zweiten Position befindet, und wobei ein oder mehrere gebogene Bleche (204) die erste Hülse (202) mit der zweiten Hülse (203) verbinden, wobei der Raum zwischen den einen oder den mehreren gekrümmten Blechen (204) der zweite Fracking-Öffnungsabschnitt(102) ist.
  2. System zum Aufbrechen einer Bohrung nach Anspruch 1, ferner umfassend eine feste Hülse (205), die um das Basisrohr (100) herum in der Nähe einer ersten Seite der Schiebehülse (200) befestigt ist; und
    ein Stellglied (206), das die feste Hülse (205) mit der Schiebehülse (200) verbindet, wobei das Stellglied (206) in der Lage ist, die Schiebehülse (200) von der ersten Position in die zweite Position zu bewegen.
  3. System zum Aufbrechen einer Bohrung nach Anspruch 1, wobei das Basisrohr ferner eine Ausgabeöffnung (103) umfasst.
  4. System zum Aufbrechen einer Bohrung nach Anspruch 1, wobei, während die Schiebehülse (200) in der ersten Position ist, der erste Fracking-Öffnungsabschnitt (102) mit dem zweiten Fracking-Öffnungsabschnitt (102) ausgerichtet ist; und,
    während die Schiebehülse (200) in der zweiten Position ist, der erste Fracking-Öffnungsabschnitt (102) nicht mit dem zweiten Fracking-Öffnungsabschnitt (102) übereinstimmt.
  5. System zum Aufbrechen einer Bohrung nach Anspruch 1, wobei ferner, während sich die Schiebehülse (200) in der ersten Position befindet, die zweite Hülse (203) die Ausgabeöffnung (103) blockiert; und, in der zweiten Position, die zweite Hülse (203) die Ausgabeöffnung (103) nicht blockiert.
  6. System zum Aufbrechen einer Bohrung nach Anspruch 4, wobei, während sich die Schiebehülse (200) in der ersten Position befindet, die zweite Hülse (203) die Ausgabeöffnung (103) blockiert; und, in der zweiten Position, die zweite Hülse (203) die Ausgabeöffnung (103) nicht blockiert.
  7. System zum Aufbrechen einer Bohrung nach Anspruch 2, wobei das Stellglied (206) eine Feder ist.
  8. System zum Aufbrechen einer Bohrung nach Anspruch 2, ferner umfassend eine Impedanzvorrichtung (601), die verhindert, dass sich die Vorspannvorrichtung (206) von einer ersten Position in eine zweite Position bewegt.
  9. System zum Aufbrechen einer Bohrung nach Anspruch 8, wobei die Impedanzvorrichtung (601) ein Strang ist, wobei das erste Ende des Strangs mit dem Basisrohr (100) verbunden ist, das zweite Ende des Strangs mit der Gleithülse (200) verbunden ist, wobei der Strang innerhalb des ersten Fracking-Öffnungsabschnitts (102) und des zweiten Fracking-Öffnungsabschnitts (102) vorhanden ist.
  10. System zum Aufbrechen einer Bohrung nach Anspruch 2, ferner umfassend einen Außenring (207), der um das Basisrohr (100) herum in der Nähe einer ersten Seite der Schiebehülse (200) befestigt ist.
  11. System zum Aufbrechen einer Bohrung nach Anspruch 3, ferner umfassend ein Einwegeventil an der Ausgabeöffnung, um zu verhindern, dass Fracking-Fluid aus dem Basisrohr an der Produktionsöffnung austritt.
  12. Verfahren zum Aufbrechen einer Bohrung, dadurch gekennzeichnet, dass es Folgendes umfasst:
    Verbinden eines Basisrohrs (100) innerhalb eines Rohrstrangs, wobei das Basisrohr (100) einen ersten Fracking-Öffnungsabschnitt (102) und eine Einführöffnung (101) umfasst, die eine Anschlagkugel (502) aufnimmt, wobei die Anschlagkugel (502) teilweise in die Kammer (104) des Basisrohrs (101) hineinragt;
    Betätigen einer Schiebehülse (200), die um das Basisrohr (100) herum angeordnet ist, von einer ersten Position in eine zweite Position, wobei die Schiebehülse (200) eine erste Hülse (202) und eine zweite Hülse (203) umfasst, wobei die erste Hülse (202) eine Innenfläche umfasst, wobei die Innenfläche einen Leerraum umfasst und wobei ein oder mehrere gebogene Bleche (204) die erste Hülse (202) mit der zweiten Hülse (203) verbinden, wobei der Raum zwischen dem einen oder den mehreren gekrümmten Blechen (204) der zweite Fracking-Öffnungsabschnitt (102) ist, wobei die erste Hülse in die erste Position positionierbar ist, wobei der Leerraum auf einer Oberfläche des Basisrohres aufliegt, die nicht die Einführungsöffnung umfasst, was verhindert, dass die Anschlagkugel die Kammer des Basisrohres verlässt; und wobei die erste Hülse in die zweite Position positionierbar ist, wobei der Leerraum über der Einführungsöffnung aufliegt, wobei die Anschlagkugel in der Lage ist, die Kammer des Basisrohres zu verlassen, um in den Leerraum zu gelangen.
  13. Verfahren nach Anspruch 12, umfassend den vorhergehenden Schritt des Aufbrechens einer Bohrung.
  14. Verfahren nach Anspruch 13, umfassend den vorhergehenden Schritt des Drückens einer Fracking-Kugel durch den Rohrstrang zu den Anschlagkugeln.
EP13766030.4A 2013-09-20 2013-09-20 System und verfahren zum aufbrechen von öl- und gasbohrungen Not-in-force EP2877683B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/069578 WO2015039698A1 (en) 2013-09-20 2013-09-20 System and method for fracturing of oil and gas wells

Publications (2)

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EP2877683A1 EP2877683A1 (de) 2015-06-03
EP2877683B1 true EP2877683B1 (de) 2019-09-04

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EP (1) EP2877683B1 (de)
CN (1) CN104854301B (de)
AU (2) AU2013394347A1 (de)
BR (1) BR112015011565B1 (de)
CA (1) CA2886434C (de)
EA (1) EA029721B1 (de)
MX (1) MX2015000912A (de)
WO (1) WO2015039698A1 (de)

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US10260314B2 (en) * 2016-06-23 2019-04-16 Vertice Oil Tools Methods and systems for a pin point frac sleeves system
US10400555B2 (en) 2017-09-07 2019-09-03 Vertice Oil Tools Methods and systems for controlling substances flowing through in an inner diameter of a tool
CA2994290C (en) 2017-11-06 2024-01-23 Entech Solution As Method and stimulation sleeve for well completion in a subterranean wellbore
CN113653464B (zh) * 2020-05-12 2023-10-31 中国石油化工股份有限公司 用于水平井的酸化管柱以及酸化方法
CN112709549B (zh) * 2021-01-13 2024-09-17 天津德瑞克石油工具有限公司 二进制投球计数簇式滑套

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CN202914064U (zh) * 2012-11-16 2013-05-01 西安鼎盛石油科技有限责任公司 应用于油气井分段压裂可选择开关的投球滑套

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Publication number Publication date
CA2886434C (en) 2017-02-14
AU2013394347A1 (en) 2015-04-09
AU2017232094B2 (en) 2020-01-02
EP2877683A1 (de) 2015-06-03
BR112015011565A2 (pt) 2017-07-11
CN104854301B (zh) 2018-09-25
WO2015039698A1 (en) 2015-03-26
EA201590099A1 (ru) 2015-09-30
EA029721B1 (ru) 2018-05-31
CA2886434A1 (en) 2015-03-26
CN104854301A (zh) 2015-08-19
AU2017232094A1 (en) 2017-10-12
MX2015000912A (es) 2015-10-29
BR112015011565B1 (pt) 2021-12-07

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