EP3494282B1 - Gewickelte rohrleitungsanordnung zur bohrlochentlastung - Google Patents

Gewickelte rohrleitungsanordnung zur bohrlochentlastung Download PDF

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Publication number
EP3494282B1
EP3494282B1 EP16911774.4A EP16911774A EP3494282B1 EP 3494282 B1 EP3494282 B1 EP 3494282B1 EP 16911774 A EP16911774 A EP 16911774A EP 3494282 B1 EP3494282 B1 EP 3494282B1
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EP
European Patent Office
Prior art keywords
wellbore
unloading
coiled tubing
bottom hole
hole assembly
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.)
Active
Application number
EP16911774.4A
Other languages
English (en)
French (fr)
Other versions
EP3494282A4 (de
EP3494282A1 (de
Inventor
Thomas J. WATKINS
Silviu LIVESCU
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Holdings LLC
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Publication date
Application filed by Baker Hughes Holdings LLC filed Critical Baker Hughes Holdings LLC
Publication of EP3494282A1 publication Critical patent/EP3494282A1/de
Publication of EP3494282A4 publication Critical patent/EP3494282A4/de
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Publication of EP3494282B1 publication Critical patent/EP3494282B1/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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
    • 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
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E21B17/203—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with plural fluid passages
    • 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
    • E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs

Definitions

  • the invention relates generally to devices and methods for unloading, or cleaning wellbores.
  • an apparatus for borehole cleaning comprises a tubular conveyance for extending from the surface into a borehole to a region to be cleaned, a motor mounted at the end of the tubular conveyance that in use is introduced into the borehole and a pump connected to the motor and having a nozzle.
  • the pump is arranged such that, when positioned in the borehole and operated by the motor, the pump withdraws material from the borehole through the nozzle and pumps it into the tubular conveyance to the surface.
  • the present invention provides an arrangement and method for unloading wellbores using a high pressure fluid jet pump and debris vacuum in conjunction with nitrogen injection.
  • the wellbore unloading arrangement includes a running string and an unloading bottom hole assembly, wherein the running string is configured to dispose the unloading bottom hole assembly into the wellbore, and wherein the unloading bottom hole assembly is carried by the running string.
  • the unloading bottom hole assembly is configured to inject nitrogen and a liquid into the wellbore, and the unloading bottom hole assembly is further configured to draw debris into the running string using suction.
  • the unloading bottom hole assembly incorporates a jet pump which is operable to inject the liquid through nozzles into the wellbore and subsequently to provide suction power to draw debris through vacuum ports into a flowbore of the running string.
  • the running string may be made up of two strings of inner coiled tubing which are disposed within an outer coiled tubing string.
  • the unloading bottom hole assembly is affixed to the running string and further incorporates a nitrogen injection tool.
  • Nitrogen injection during operation of the fluid jet pump decreases the density of fluids within the wellbore proximate the bottom hole assembly, thereby improving the effectiveness of the debris vacuum.
  • the inventors have also determined that the combination of fluid jetting, vacuum and nitrogen injection allows a user to unload wellbores, at greater depths than with conventional techniques. Nitrogen injection counteracts hydrostatic pressure that could otherwise preclude the removal of debris.
  • Figure 1 illustrates an exemplary wellbore 10 which has been drilled through the earth 12 from the surface 14 down to a hydrocarbon-bearing formation 16.
  • Debris 18 is located within the wellbore 10.
  • the debris 18 is typically relatively fine and may include sand and cuttings.
  • a wellbore unloading arrangement 20 is disposed within the wellbore 10 from the surface 14 via a coiled tubing injector (not shown).
  • the wellbore unloading arrangement 20 includes a running string 22 and an unloading bottom hole assembly 24.
  • Figure 2 depicts an axial cross-section of the running string 22. It can be seen that the running string 22 includes an outer coiled tubing string 26 which defines a flowbore 28. First and second inner coiled tubing strings 30, 32 are located within the flowbore 28 of the outer coiled tubing string 26.
  • FIG. 3 illustrates an exemplary unloading bottom hole assembly 24 in greater detail.
  • the unloading bottom hole assembly 24 includes an outer housing 34 with a nose portion 36 having injection nozzles 38 for injection of fluids into the wellbore 10.
  • the fluids that can be injected via the injection nozzles 38 are provided via the first and second coiled tubing strings 30, 32.
  • the lower end of the first coiled tubing string 30 is blocked by a plug 39 to cause fluid flowing through the first coiled tubing string 30 to exit through a lateral opening 41.
  • Vacuum ports 40 are located in the housing 34 to permit fluid and solids to enter the flowbore 28 of the outer coiled tubing string 26 from the wellbore 10. Debris 18 will enter the flowbore 28 of the outer coiled tubing string 26 and then to surface 14. Larger debris 18 may be filtered out from entering the flowbore 28 by screening by the vacuum ports 40.
  • a nitrogen supply 42 and associated fluid pump 44 are located at surface 14 and are operably associated with the wellbore unloading arrangement 20 to flow nitrogen into the first inner coiled tubing string 30.
  • a liquid supply 46 and associated fluid pump 48 are also located at surface 14 and are operably associated with the wellbore unloading arrangement 20 to flow liquid from the liquid supply 46 into the second inner coiled tubing string 32.
  • the liquid of the liquid supply 46 is typically water but may be other fluids as well.
  • a coiled tubing injection assembly (not shown), of a type well known in the art, is also located at surface 14 and is used to inject the wellbore unloading arrangement 20 into the wellbore 10 as well as remove it from the wellbore 10.
  • the wellbore unloading arrangement 20 is disposed into the wellbore 10 and lowered so that the unloading bottom hole assembly 24 is in a desired location proximate the debris 18 to be removed.
  • Nitrogen is pumped through the first inner coiled tubing string 30 to the unloading bottom hole assembly 24.
  • Non-nitrogen liquid is pumped down the second inner coiled tubing string 32 to the unloading bottom hole assembly 24.
  • a fluid jet pump 33 switches between injection of liquid from the second inner coiled tubing string 32 through nozzles 38 and vacuum power to draw debris into the flowbore 28 of the outer coiled tubing string 26 through vacuum ports 40.
  • the liquid that is injected through injection nozzles 38 will help dislodge debris 18 within the wellbore 10. This dislodged debris 18 can then be drawn into the flowbore 28 through vacuum ports 40.
  • nitrogen can be flowed from the nitrogen source 42 to injection nozzles 38.
  • Nitrogen injection into the wellbore 10 will preferably occur proximate the debris 18 and may be done continuously as injection of liquid and vacuuming occurs.
  • the wellbore unloading arrangement 20 may be moved axially within the wellbore 10 during these operations to help further dislodge debris 18 and aid its removal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Claims (7)

  1. Bohrlochentlastungsanordnung (20) zum Entfernen von Bohrschutt (18) aus einem Bohrloch (10), wobei die Bohrlochentlastungsanordnung (20) Folgendes umfasst:
    einen Laufstrang (22) und eine Lochbodenentlastungsvorrichtung (24),
    wobei der Laufstrang (22) dazu konfiguriert ist, die Lochbodenentlastungsvorrichtung (24) in das Bohrloch (10) einzusetzen,
    und wobei die Lochbodenentlastungsvorrichtung (24) von dem Laufstrang (22) geführt wird,
    dadurch gekennzeichnet, dass
    die Lochbodenentlastungsvorrichtung (24) dazu konfiguriert ist, Stickstoff und eine Flüssigkeit in das Bohrloch (10) einzuspritzen, und die Lochbodenentlastungsvorrichtung (24) ferner dazu konfiguriert ist, Bohrschutt (18) durch Ansaugen in den Laufstrang (22) zu ziehen; und dadurch dass
    die Lochbodenentlastungsvorrichtung (24) eine Strahlpumpe (33) enthält, die betreibbar ist, um die Flüssigkeit durch Düsen (38) in das Bohrloch (10) einzuspritzen und anschließend eine Saugleistung bereitzustellen, um Bohrschutt durch Vakuumöffnungen (40) in eine Durchflussbohrung (28) des Laufstrangs (22) zu ziehen.
  2. Bohrlochentlastungsanordnung (20) nach Anspruch 1, wobei der Laufstrang (22) ferner umfasst:
    einen äußeren gewickelten Rohrleitungsstrang (26), der die Durchflussbohrung (28) entlang ihrer Länge definiert;
    einen ersten inneren gewickelten Rohrleitungsstrang (30) innerhalb der Durchflussbohrung (28) des äußeren gewickelten Rohrleitungsstrangs (26); und
    einen zweiten inneren gewickelten Rohrleitungsstrang (32) innerhalb der Durchflussbohrung (28) des äußeren gewickelten Rohrleitungsstrangs (26).
  3. Bohrlochentlastungsanordnung nach Anspruch 2, wobei:
    der Stickstoff durch den ersten inneren gewickelten Rohrleitungsstrang (30) geleitet wird; und
    die Flüssigkeit durch den zweiten inneren gewickelten Rohrleitungsstrang (32) geleitet wird.
  4. Bohrlochentlastungsanordnung (20) nach Anspruch 1, wobei es sich bei der Flüssigkeit um Wasser handelt.
  5. Verfahren zur Entlastung eines Bohrlochs (10) durch Entfernen von Bohrschutt (18) aus dem Bohrloch, wobei das Verfahren gekennzeichnet ist durch die folgenden Schritte:
    Einsetzen einer Bohrlochentlastungsanordnung (20) in das Bohrloch (10), wobei die Bohrlochentlastungsanordnung (20) eine Lochbodenentlastungsvorrichtung (24) aufweist;
    Einspritzen einer Flüssigkeit in das Bohrloch (10) durch die Lochbodenentlastungsvorrichtung (24), um den Bohrschutt (18) abzulösen;
    Entfernen des Bohrschutts (18) aus dem Bohrloch (10) durch Absaugen des Bohrschutts (18) in die Lochbodenentlastungsvorrichtung (24); und
    Einspritzen von Stickstoff in das Bohrloch (10) durch die Lochbodenentlastungsvorrichtung (24) in der Nähe des Bohrschutts (18);
    wobei eine Strahlpumpe (33) bereitgestellt wird, die betreibbar ist, um die Flüssigkeit in das Bohrloch (10) einzuspritzen und anschließend eine Absaugung bereitzustellen, um Bohrschutt in die Lochbodenentlastungsvorrichtung (24) zu ziehen.
  6. Verfahren nach Anspruch 5, wobei der Schritt des Einsetzens der Bohrlochentlastungsanordnung (20) in das Bohrloch (10) ferner gekennzeichnet ist durch:
    Einsetzen einer Lochbodenentlastungsvorrichtung (24) in das Bohrloch (10) mit einem Laufstrang (22), der einen eine Durchflussbohrung (28) definierenden äußeren gewickelten Rohrleitungsstrang (26) und mindestens einen sich innerhalb der Durchflussbohrung (28) befindlichen inneren gewickelten Rohrleitungsstrang (30, 32) einschließt.
  7. Verfahren nach Anspruch 6 ferner gekennzeichnet durch:
    Einspritzen des Stickstoffs durch den mindestens einen inneren gewickelten Rohrleitungsstrang (30); und Entfernen des Bohrschutts (18) durch die Durchflussbohrung (28).
EP16911774.4A 2016-08-04 2016-08-04 Gewickelte rohrleitungsanordnung zur bohrlochentlastung Active EP3494282B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/045558 WO2018026370A1 (en) 2016-08-04 2016-08-04 Coiled tubing arrangement for wellbore unloading

Publications (3)

Publication Number Publication Date
EP3494282A1 EP3494282A1 (de) 2019-06-12
EP3494282A4 EP3494282A4 (de) 2020-03-25
EP3494282B1 true EP3494282B1 (de) 2021-04-21

Family

ID=61074006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16911774.4A Active EP3494282B1 (de) 2016-08-04 2016-08-04 Gewickelte rohrleitungsanordnung zur bohrlochentlastung

Country Status (5)

Country Link
EP (1) EP3494282B1 (de)
BR (1) BR112019001850B1 (de)
MY (1) MY197513A (de)
SA (1) SA519401010B1 (de)
WO (1) WO2018026370A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11365607B2 (en) 2020-03-30 2022-06-21 Saudi Arabian Oil Company Method and system for reviving wells

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388650B1 (en) * 1993-06-14 1997-09-16 Mg Nitrogen Services Inc Non-cryogenic production of nitrogen for on-site injection in downhole drilling
US6029746A (en) * 1997-07-22 2000-02-29 Vortech, Inc. Self-excited jet stimulation tool for cleaning and stimulating wells
US6877571B2 (en) * 2001-09-04 2005-04-12 Sunstone Corporation Down hole drilling assembly with independent jet pump
US7048056B1 (en) * 2003-08-11 2006-05-23 Blake Mark A Down-hole well cleaning tool
US7213648B2 (en) * 2004-03-30 2007-05-08 Kirby Hayes Incorporated Pressure-actuated perforation with continuous removal of debris
EP1852571A1 (de) * 2006-05-03 2007-11-07 Services Pétroliers Schlumberger Bohrlochreinigung mit Bohrlochpumpen
CA2873712C (en) * 2012-06-05 2016-11-08 Halliburton Energy Services, Inc. Methods and systems for performance of subterranean operations using dual string pipes
US20140014350A1 (en) * 2012-07-13 2014-01-16 Morley Sebree Circulating coil cleanout tool and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
MY197513A (en) 2023-06-19
BR112019001850B1 (pt) 2022-08-23
WO2018026370A1 (en) 2018-02-08
BR112019001850A2 (pt) 2019-05-07
EP3494282A4 (de) 2020-03-25
SA519401010B1 (ar) 2023-01-17
EP3494282A1 (de) 2019-06-12

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