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EP2530240A1 - Outil de formation pénétrant - Google Patents

Outil de formation pénétrant Download PDF

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Publication number
EP2530240A1
EP2530240A1 EP11168240A EP11168240A EP2530240A1 EP 2530240 A1 EP2530240 A1 EP 2530240A1 EP 11168240 A EP11168240 A EP 11168240A EP 11168240 A EP11168240 A EP 11168240A EP 2530240 A1 EP2530240 A1 EP 2530240A1
Authority
EP
European Patent Office
Prior art keywords
formation
penetrating
fluid
casing
tool
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.)
Withdrawn
Application number
EP11168240A
Other languages
German (de)
English (en)
Inventor
Lars Mangal
Jørgen HALLUNDBAEK
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.)
Welltec AS
Original Assignee
Welltec AS
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 Welltec AS filed Critical Welltec AS
Priority to EP11168240A priority Critical patent/EP2530240A1/fr
Priority to RU2013157742/03A priority patent/RU2013157742A/ru
Priority to CA2837737A priority patent/CA2837737A1/fr
Priority to EP12724623.9A priority patent/EP2715061B1/fr
Priority to MX2013013915A priority patent/MX2013013915A/es
Priority to AU2012264713A priority patent/AU2012264713B2/en
Priority to PCT/EP2012/060146 priority patent/WO2012163967A1/fr
Priority to CN201280026674.8A priority patent/CN103562494A/zh
Priority to BR112013030608A priority patent/BR112013030608A2/pt
Priority to US14/122,727 priority patent/US20140102801A1/en
Publication of EP2530240A1 publication Critical patent/EP2530240A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets

Definitions

  • the present invention relates to a formation penetrating tool submersible into a casing in a well for hydraulically penetrating a formation
  • a tool housing comprising a tool housing, a casing penetrating unit adapted to provide a hole in a wall of the casing, a supply hose, slidable in the tool housing, for supplying a high pressurised fluid to a nozzle
  • the tool housing has an opening for providing access of the supply hose and the nozzle to the opening in the casing
  • the downhole tool further comprises a pump in fluid communication with the supply hose for providing a jet of fluid out of the nozzle for penetrating the formation.
  • the invention relates to a downhole system comprising a formation penetrating tool according to the invention and to a method for hydraulically penetrating a formation.
  • the maximum reservoir contact is obtained if the fractures are created perpendicularly or radially from the casing or from the bore hole in a well.
  • the fractures tend to be created in parallel to the casing or the bore hole even though the fracturing fluid or perforating charge is directed radially into the formation.
  • An object of the present invention is to wholly or partly overcome the above disadvantages and drawbacks of the prior art. More specifically, it is an object to provide a tool enabling a more controlled fracturing process.
  • a formation penetrating tool submersible into a casing in a well for hydraulically penetrating a formation comprising:
  • a holding unit may be arranged for providing a predetermined pushing force to the supply hose so that the supply hose and thereby the nozzle may be kept in a predetermined position during penetration.
  • the predetermined pushing force may be at least equal to or larger than a pressure of the high pressurised fluid at the nozzle.
  • the holding unit may comprise a piston circumferenting the supply hose.
  • the piston may be arranged in a piston housing in the tool housing.
  • the casing penetrating device may be arranged in or around the nozzle.
  • the nozzle may have an annular opening (orifice) providing a cylindrical jet of fluid.
  • the pump may be arranged in or in connection with the tool housing.
  • the casing penetrating device may be a punch, a drill bit or a charge of a perforating gun.
  • the tool housing may comprise a guiding element for guiding the supply hose out of the opening in the tool housing.
  • the tool housing may comprise a guiding tube for guiding the supply hose.
  • the supply hose may be sliding in a fluid channel being in fluid communication with the pump.
  • the supply hose may be armoured.
  • the supply hose may comprise a plastic core such as a Teflon core, or may be coated with Teflon or other friction reducing materials.
  • the high pressurised fluid may be well fluid.
  • the tool housing may comprise an inlet for the well fluid, the inlet being in fluid communication with the pump.
  • a filter or screen may be arranged in connection with the inlet for filtering the well fluid before it enters the pump.
  • the formation penetrating tool according to the invention may further comprise a fluid reservoir.
  • the fluid reservoir may contain a supply of fluid.
  • the fluid may be the pressurised fluid, an acid, a base, or a mixture of substances.
  • a fluid control device may be arranged in connection with the fluid reservoir.
  • a fluid communication to the fluid reservoir may be opened or closed.
  • the tool may comprise an anchor section for pressing the penetrating unit against the wall of the casing or anchoring the tool to an inner face of the casing.
  • the pump may be powered through a wireline or a battery.
  • the pump may be a centrifugal pump, a piston pump, or a jet pump.
  • the tool may comprise a pressure measuring device.
  • the tool may comprise an electronic section.
  • the tool may comprise a hydraulic motor or an electrical motor for driving the pump.
  • the tool may comprise a position device, such as a casing collar locator, adapted for positioning the downhole tool in the casing in an axial and/or a radial direction of the casing.
  • a position device such as a casing collar locator
  • the formation penetrating tool may comprise an inlet being in fluid communication with the pump, enabling a well fluid to be used as the high pressurised fluid.
  • an additional fluid from a fluid reservoir may be arranged in the formation penetrating tool via the supply hose, and the nozzle may be introduced into the penetrated formation for a subsequent treatment of the penetrated formation.
  • the subsequent treatment may be an acid treatment for creating a larger surface area of the penetrated formation.
  • the subsequent treatment may be an enzyme treatment for cleaning the penetrated formation.
  • the well fluid may be filtered before entering the pump.
  • the present invention furthermore relates to a downhole system comprising a formation penetrating tool according to the invention and a driving unit, such as a downhole tractor.
  • the invention relates to a method for hydraulically penetrating a formation comprising the steps of
  • the method according to the invention may comprise at least one of the following steps:
  • Fig. 1 shows a formation penetrating tool 1 submerged in a casing 2 in a well 3.
  • the tool 1 has a tool housing 4 in which a casing penetrating unit 5 adapted to provide a hole 6 in a wall 7 of the casing 2 is arranged.
  • a nozzle 10 is arranged in an end of a supply hose 8, slidable within the tool housing 4.
  • the supply hose 8 supplies a high pressurised fluid 9 to the nozzle 10 which is jetted as a jet stream out through the hole 6 in order to penetrate the formation, thereby providing a formation micro-bore substantially radially from the formation penetrating tool 1.
  • the formation penetrating tool 1 comprises a pump 12 which is in fluid communication with the supply hose 8 for providing a jet 13 of fluid out of the nozzle 10 to penetrate the formation creating the micro-bore or formation bore 32.
  • the fracturing process can be controlled better since a micro-bore acts as a notch.
  • the fracturing process may be performed by means of high pressurised fluid pumped down into the casing or by a perforating gun.
  • the micro-bore may be used before performing an acidifying process.
  • the tool housing has an opening 11 for providing access of the supply hose 8 and the nozzle 10 to the opening 11 in the casing 2.
  • the supply hose 8 is led out through the opening, and fluid 9 is jetted out through the nozzle 10.
  • the high pressurised fluid jetted into the formation is pressurised in the pump 12.
  • the pump 12 pumps well fluid in through an inlet 21 and a filter 22 arranged in the inlet 21 and pumps the well fluid via the supply hose out through the nozzle.
  • the power needed for the jetting process is less than if the pump was arranged at the top of the well and the fluid was pumped down to the supply hose 8 through a drill pipe or coiled tubing.
  • the pump is arranged in the tool and is driven by an electrical motor 29 which is powered by a wireline through an electronic section 28.
  • the formation penetrating tool 1 is thus a wireline tool.
  • the formation penetrating tool 1 comprises an anchoring section 25 to force the casing penetrating unit 5 against the casing wall.
  • the tool may have several anchoring sections 25.
  • the tool comprises a holding unit 14 which holds the supply hose and thus the nozzle close to the formation.
  • the holding unit 14 provides a predetermined pushing force to the supply hose so that the supply hose and thereby the nozzle may be kept in a predetermined position during penetration so that the jet does not lose its jetting power before reaching the formation.
  • the predetermined pushing force is substantially equal to or up to 5% smaller than the pressure of the high pressurised fluid at the nozzle.
  • the holding unit 14 comprises a piston 15 arranged around the supply hose so that the hose penetrates the piston at its center.
  • the piston 15 is slidably arranged in a piston housing 16 in the tool housing so that the hose can extend into the formation bore as the formation bore is created.
  • the pressurised fluid 9 from the pump is pumped into a fluid channel 20 which in Fig. 2 functions as the piston housing 16.
  • the fluid acts upon the piston, forcing the hose out into the formation bore as it is created by the jet.
  • the holding unit 14 is the piston sliding in the piston housing.
  • the supply hose is guided in the formation penetrating tool 1 by a guiding tube 19 and a guiding element 18 in order to slide without creating substantial friction.
  • the casing penetrating device is arranged around the nozzle, and the guiding element 18 is part of the casing penetrating unit 5.
  • the casing penetrating unit 5 is arranged in the second part of the formation penetrating tool 1 and is slided away from opening when the opening has been made so that the nozzle and the supply hose can enter the formation.
  • the casing penetrating device is a punch in Fig. 2 , but may also be a drill bit or a charge 33 of a perforating gun forming part of the tool as shown in Fig. 4 .
  • the punch shown in Fig. 2 is forced outward towards the casing in order to penetrate the casing wall, creating a hole in the wall by means of a sliding element 42 slidable arranged in a space 43 in the tool housing 4.
  • the sliding element 42 comprises an inclined surface 44, and when the sliding element 42 is forced away from the pump 12 by means of pressurised fluid in a fluid channel 45 indicated by a dotted line, the punch is forced out of the opening in the tool housing 4 and punches a hole in the casing wall.
  • the charge 33 is activated by a contact 34 arranged in the piston housing and when the piston slides past the contact, the side of the piston presses on the contact and the charge is initiated by the wiring 35, and the charge explodes, creating an opening in the casing wall.
  • the supply hose is armoured by a threading embedded in the wall of the hose so that the hose is self-supporting and that the holding unit can exert pressure from one end in order to provide a holding pressure in the other end of the hose countering the pressure from the formation when the jet hits the formation.
  • the supply hose may also comprise a plastic core, such as a Teflon core, or be coated with Teflon or other friction-reducing materials in order to supply the pressurised fluid 9 without losing too much pressure.
  • the holding unit comprises a first 40 and a second 41 piston arranged around the supply hose at a distance from each other, creating a chamber 37 therebetween.
  • the first piston is arranged closest to the nozzle.
  • the holding unit 14 also comprises a fluid channel 38 in fluid communication with the pump 12 or an additional pump providing a pressure on the first piston 40, forcing the hose outward towards the formation and thus holds the nozzle sufficiently close to the formation in order to crunch the formation by means of the jet of pressurised fluid 9.
  • the second piston and the aforementioned piston 15 may be the same piston.
  • the formation penetrating tool 1 may comprise a fluid reservoir 23 containing the fluid 9 if the pump does not take in well fluid or the reservoir 23 may contain an additional fluid.
  • the fluid may be any kind of fluid, such as water, an acid, a base, a mixture of substances.
  • the additional fluid from the fluid reservoir may also be introduced into the penetrated formation for a subsequent treatment of the penetrated formation, so that a second run in order to fracture the formation using the micro-bore 32 is no longer needed.
  • the formation penetrating tool 1 also comprises a fluid control device 24 arranged in connection with the fluid reservoir 23 so that a fluid communication between the pump 12 and the fluid reservoir may be open or closed.
  • a fluid control device 24 By having the fluid control device 24, the additional fluid in the fluid reservoir can be mixed with the well fluid pumped in by means of the pump, and thus the fluid control device 24 can control the amount of fluid from the reservoir which is mixed with the well fluid.
  • the nozzle has an annular orifice providing a cylindrical jet of fluid.
  • the fluid creates an annular micro-bore around a formation centre part which may be brought up with the tool with a view to analysing the formation so that an optimal fracturing process can be initiated.
  • the formation penetrating tool 1 is powered by wireline 26 or a battery arranged inside the tool.
  • the line 26 can be any line strong enough to pull the tool out of the well after the penetrating operation.
  • the formation penetrating tool 1 comprises a pressure measuring device 27 for measuring the pressure of the fluid 9 supplied through the supply hose.
  • the formation penetrating tool 1 also comprises a position device 30, such as a casing collar locator, adapted to position the formation penetrating tool 1 in the casing in an axial and/or a radial direction of the casing 2. Furthermore, the position is used for finding the formation micro-bore in the following fracturing process.
  • the pump may be a centrifugal pump, a piston pump or a jet pump.
  • Fig. 5 shows a downhole system 100.
  • the downhole system comprises the formation penetrating tool 1 and a driving unit 31, such as a downhole tractor.
  • the driving unit is mainly used to drive the formation penetrating tool 1 and itself forward in a horizontal part of the well but may also be used as an anchoring section or a positioning device.
  • fluid or well fluid any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc.
  • gas is meant any kind of gas composition present in a well, completion, or open hole
  • oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
  • Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
  • a casing any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production.

Landscapes

  • 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)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP11168240A 2011-05-31 2011-05-31 Outil de formation pénétrant Withdrawn EP2530240A1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP11168240A EP2530240A1 (fr) 2011-05-31 2011-05-31 Outil de formation pénétrant
RU2013157742/03A RU2013157742A (ru) 2011-05-31 2012-05-30 Вскрывающий формацию инструмент
CA2837737A CA2837737A1 (fr) 2011-05-31 2012-05-30 Outil de penetration de formation
EP12724623.9A EP2715061B1 (fr) 2011-05-31 2012-05-30 Outil de pénétration de formation
MX2013013915A MX2013013915A (es) 2011-05-31 2012-05-30 Herramienta de penetracion de formaciones.
AU2012264713A AU2012264713B2 (en) 2011-05-31 2012-05-30 A formation penetrating tool
PCT/EP2012/060146 WO2012163967A1 (fr) 2011-05-31 2012-05-30 Outil de pénétration de formation
CN201280026674.8A CN103562494A (zh) 2011-05-31 2012-05-30 地层穿刺工具
BR112013030608A BR112013030608A2 (pt) 2011-05-31 2012-05-30 ferramenta para penetrar uma formação
US14/122,727 US20140102801A1 (en) 2011-05-31 2012-05-30 Formation penetrating tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11168240A EP2530240A1 (fr) 2011-05-31 2011-05-31 Outil de formation pénétrant

Publications (1)

Publication Number Publication Date
EP2530240A1 true EP2530240A1 (fr) 2012-12-05

Family

ID=44118066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168240A Withdrawn EP2530240A1 (fr) 2011-05-31 2011-05-31 Outil de formation pénétrant

Country Status (1)

Country Link
EP (1) EP2530240A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989737A (zh) * 2018-01-03 2019-07-09 中国石油化工股份有限公司 一种实现岩石自支撑裂缝的方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302720A (en) * 1957-06-17 1967-02-07 Orpha B Brandon Energy wave fractureing of formations
US4050529A (en) * 1976-03-25 1977-09-27 Kurban Magomedovich Tagirov Apparatus for treating rock surrounding a wellbore
US4296970A (en) * 1980-02-15 1981-10-27 Hodges Everett L Hydraulic mining tool apparatus
US5327970A (en) * 1993-02-19 1994-07-12 Penetrator's, Inc. Method for gravel packing of wells
US5396957A (en) * 1992-09-29 1995-03-14 Halliburton Company Well completions with expandable casing portions
US20050217867A1 (en) * 2004-04-01 2005-10-06 Misselbrook John G Apparatus to allow a coiled tubing tractor to traverse a horizontal wellbore
US20090032255A1 (en) * 2007-08-03 2009-02-05 Halliburton Energy Services, Inc. Method and apparatus for isolating a jet forming aperture in a well bore servicing tool
US20090288833A1 (en) * 2008-05-20 2009-11-26 Halliburton Energy Services, Inc. System and methods for constructing and fracture stimulating multiple ultra-short radius laterals from a parent well
US20100044041A1 (en) * 2008-08-22 2010-02-25 Halliburton Energy Services, Inc. High rate stimulation method for deep, large bore completions

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302720A (en) * 1957-06-17 1967-02-07 Orpha B Brandon Energy wave fractureing of formations
US4050529A (en) * 1976-03-25 1977-09-27 Kurban Magomedovich Tagirov Apparatus for treating rock surrounding a wellbore
US4296970A (en) * 1980-02-15 1981-10-27 Hodges Everett L Hydraulic mining tool apparatus
US5396957A (en) * 1992-09-29 1995-03-14 Halliburton Company Well completions with expandable casing portions
US5327970A (en) * 1993-02-19 1994-07-12 Penetrator's, Inc. Method for gravel packing of wells
US20050217867A1 (en) * 2004-04-01 2005-10-06 Misselbrook John G Apparatus to allow a coiled tubing tractor to traverse a horizontal wellbore
US20090032255A1 (en) * 2007-08-03 2009-02-05 Halliburton Energy Services, Inc. Method and apparatus for isolating a jet forming aperture in a well bore servicing tool
US20090288833A1 (en) * 2008-05-20 2009-11-26 Halliburton Energy Services, Inc. System and methods for constructing and fracture stimulating multiple ultra-short radius laterals from a parent well
US20100044041A1 (en) * 2008-08-22 2010-02-25 Halliburton Energy Services, Inc. High rate stimulation method for deep, large bore completions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989737A (zh) * 2018-01-03 2019-07-09 中国石油化工股份有限公司 一种实现岩石自支撑裂缝的方法

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