WO2011078868A1 - Outil de fond de puits et dispositif de refroidissement associé - Google Patents

Outil de fond de puits et dispositif de refroidissement associé Download PDF

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Publication number
WO2011078868A1
WO2011078868A1 PCT/US2009/069450 US2009069450W WO2011078868A1 WO 2011078868 A1 WO2011078868 A1 WO 2011078868A1 US 2009069450 W US2009069450 W US 2009069450W WO 2011078868 A1 WO2011078868 A1 WO 2011078868A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow path
well tool
cooling section
cooling
section
Prior art date
Application number
PCT/US2009/069450
Other languages
English (en)
Inventor
Daniel Winslow
Original Assignee
Halliburton Energy Services, Inc.
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 Halliburton Energy Services, Inc. filed Critical Halliburton Energy Services, Inc.
Priority to PCT/US2009/069450 priority Critical patent/WO2011078868A1/fr
Priority to US12/958,459 priority patent/US9732605B2/en
Publication of WO2011078868A1 publication Critical patent/WO2011078868A1/fr

Links

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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/001—Cooling arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators

Definitions

  • the present disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in an embodiment described herein, more particularly provides a downhole well tool and a cooler for the well tool.
  • heat-sensitive devices such as, electronic circuits, sensors, emitters, etc.
  • FIG. 1 is a schematic view of a well system embodying principles of the present disclosure.
  • FIG. 2 is a schematic view of a refrigeration system which may be used for a well tool cooler in the system of FIG. 1.
  • FIG. 3 is a schematic partially cross-sectional view of the well tool cooler which embodies principles of the present disclosure.
  • FIG. 4 is an elevational view of a heat-sensitive device which may be thermally protected by the well tool cooler.
  • FIG. 5 is an elevational view of a cooling section of the well tool cooler positioned about the heat-sensitive device .
  • FIG. 6 is an enlarged scale elevational view of the ends of helical tube sections of the cooling section.
  • FIG. 7 is an elevational view of a U-tube section connecting ends of the helical tube sections.
  • FIG. 8 is a schematic cross-sectional view of another configuration of the cooling section.
  • FIG. 9 is an enlarged scale elevational view of helical recesses in the cooling section of FIG. 8.
  • FIG. 1 Representatively illustrated in FIG. 1 is one example of a well system 10 which can embody principles of the present disclosure.
  • a well tool 12 is interconnected in a tubular string 14 (such as, a production tubing, coiled tubing, work, test or drill string, etc.), and is conveyed into a wellbore 16 lined with casing 18 and cement 20.
  • a tubular string 14 such as, a production tubing, coiled tubing, work, test or drill string, etc.
  • tubular string e.g., a wireline or slickline could be used
  • the well tool 12 depicted in FIG. 1 includes a well tool cooler 22 which maintains a heat-sensitive device 24 (not visible in FIG. 1; see FIG. 3) of the well tool below a temperature which would otherwise damage the device.
  • Damaging heat could originate from an earth formation surrounding the wellbore 16, from the device 24 itself, or from any other source.
  • FIG. 2 one example of a refrigeration system 26 which may be used in the well tool cooler 22 is representatively illustrated apart from the remainder of the well tool 12 and well system 10.
  • the refrigeration system 26 is similar to a conventional four- stage refrigeration system. Cooling (more accurately, removal of heat) is
  • the cooling fluid 28 expands and absorbs heat 34 from the heat sensitive device 24 and/or the environment adjacent the device.
  • the cooling fluid 28 evaporates, thereby changing phase to a relatively low- pressure gas by the time it reaches an outlet 36 of the cooling section 32 .
  • a compressor 38 pumps the gaseous cooling fluid 28 from the cooling section 32 to a condenser 40 .
  • heat 34 is removed from the cooling fluid 28 (for example, by discharging the heat to the wellbore
  • the cooling fluid 28 passes through an expansion device 42 (such as, an expansion valve or orifice).
  • the flow of the cooling fluid 28 into the cooling section 32 is controlled in this example by a pressure differential across the expansion device 42 .
  • flow of the cooling fluid 28 could be temperature-controlled, etc.
  • the refrigeration system 26 could include other elements, such as an accumulator, a filter/dryer, an evaporator pressure
  • the refrigeration system 26 depicted in FIG. 2 is merely one example of how the well tool cooler 22 could be configured to thermally protect the heat-sensitive device 24.
  • the cooling fluid 28 may comprise a refrigerant, but in other examples the cooling fluid could comprise any type of fluid which is capable of absorbing heat 34 from the device 24 and/or its adjacent environment, and discharging that heat elsewhere (such as, to the
  • cooling fluid 28 examples include water, isopropyl alcohol, other alcohols, ammonia, propylene glycol, and mixtures of these fluids.
  • FIG. 3 a cross-sectional view of a portion of the well tool 12 is representatively illustrated.
  • the well tool cooler 22 can be seen to include the cooling section 32 surrounding the heat- sensitive device 24.
  • the cooling section 32 could be within, longitudinally adjacent, or otherwise positioned relative to, the device 24.
  • An evacuated flask 44 is positioned radially between the cooling section 32 and an outer well tool housing 46.
  • the flask 44 functions to insulate the cooling section 32 and device 24 from the high temperature wellbore 16
  • the cooling section 32 preferentially absorbs heat 34 from the device 24 , rather than from the external heat source 48 .
  • the flask 44 is preferably of the type known to those skilled in the art as a Dewar flask.
  • a Dewar flask typically comprises an insulated container having inner and outer walls with a vacuum between the walls and silvered surfaces facing the vacuum.
  • the flask 44 is not necessary, and other types of insulation, and other types of evacuated flasks, may be used in keeping with the principles of this disclosure.
  • thermal insulation such as, a polyimide foam or other material having relatively low thermal conductivity
  • no insulation at all may be used between the external heat source 48 and the cooling section 32 or device 24 .
  • the cooling section 32 in this example includes a helical flow path 50 for the cooling fluid 28 .
  • the cooling fluid 28 preferably flows through the helical flow path 50 from one end of the cooling section 32 to an opposite end of the cooling section, and then flows through the flow path in the opposite direction. In this manner, the cooling fluid 28 makes multiple passes longitudinally through the cooling section 32 adjacent the device 24 , flowing helically through the flow path 50 in each pass, and absorbing heat 34 from the device 24 in each pass.
  • the flow path 50 extends through a helically formed tube 52 , but other flow path configurations may be used in keeping with the
  • the heat-sensitive device 24 is representatively illustrated apart from the remainder of the well tool 12.
  • the device 24 includes various components 54, some or all of which could be damaged by excessive heat when the well tool 12 is used in the wellbore 16 environment.
  • the components 54 could include electronic circuits, power supplies, etc. which generate heat when operated, sensors or other components (such as a scintillation
  • any type of device 24 and components 54 thereof can be thermally protected by the well tool cooler 22, whether or not the device or components themselves generate heat, in keeping with the principles of this disclosure.
  • the helical tube 52 of the cooling section 32 is depicted as being installed outwardly overlying the heat-sensitive device 24.
  • the tube 52 is, thus, closely adjacent the device 24 to thereby more efficiently absorb heat 34 from the device.
  • the tube 52 includes a section 52a through which the cooling fluid 28 flows helically downward toward a lower end of the cooling section 32, and another section 52b through which the cooling fluid flows helically upward toward the upper end of the cooling section.
  • the lower end of the cooling section 32 is representatively illustrated. In this view, the manner in which a reversal of direction of flow of the fluid 28 in the cooling section 32 occurs can be more clearly seen.
  • a U-turn section 52c is used to connect the tube sections 52a, 52b.
  • the fluid 28 enters the U-turn section 52c from the helical tube section 52a, reverses direction in the U-turn section, and flows into the helical tube section 52b.
  • cooling section 32 One benefit of this configuration of the cooling section 32 is that the inlet 30 and outlet 36 of the cooling section can both be positioned at one end of the cooling section for convenient connection to the compressor 38, condenser 40 and expansion device 42. Another benefit of this configuration is that the tube 52 and each of its sections 52a-c, and the flow path 50 and cooling fluid 28 therein, are maintained in close proximity to the heat- sensitive device 24 for maximum transfer of heat 34 from the device to the cooling fluid.
  • the heat-sensitive device 24 is not depicted in FIG. 8 for illustrative clarity, but it would preferably be disposed in a cavity 56 within the cooling section 32 in actual practice.
  • the flow path 50 comprises helical recesses 58 formed in a sleeve 60.
  • the sleeve 60 radially outwardly surrounds the cavity 56 in which the heat-sensitive device 24 is
  • An annular recess 62 interconnects the helical recesses 58 (and, thus, the helical flow path sections 50a, 50b) at a lower end of the cooling section 32.
  • Another sleeve 64 radially outwardly surrounds the sleeve 60 having the recesses 58 formed therein, thereby forming the closed helical flow path sections 50a, 50b.
  • the cooling section 32 of FIG. 8 functions in basically the same manner as the cooling section depicted in the previously described drawings.
  • the cooling fluid 28 enters the inlet 30 and flow helically downward through the flow path section 50a toward the lower end of the cooling section 32, reverses direction in the annular recess 62, and flows helically upward through the flow path section 50b to the outlet 36.
  • the cooling fluid is closely proximate the cavity 56 containing the heat-sensitive device 24, thereby efficiently absorbing heat 34 from the device.
  • the lower end of the cooling section 32 is representatively illustrated with the sleeve 64 removed from the sleeve 60, so that the helical recesses 58 are exposed.
  • the manner in which the helical recesses 58 are in fluid communication with each other via the annular recess 62 is more clearly seen.
  • the well tool 12 described above is provided with the uniquely constructed cooling section 32 which efficiently and
  • the well tool 12 which can comprise a well tool housing 46 and a cooling section 32 positioned within the well tool housing 46.
  • the cooling section 32 can include a helical cooling fluid flow path 50, with the flow path 50 having a reversal of direction proximate an end of the cooling section 32.
  • the flow path 50 may comprise multiple helical flow path sections 50a, 50b which are in fluid communication with each other proximate the end of the cooling section 32.
  • the flow path 50 may extend through a U-turn section 52c which provides fluid communication between the helical flow path sections 50a, 50b.
  • the cooling section 32 may be positioned radially outward of a heat-sensitive device 24.
  • a cooling fluid 28 may flow about the device 24 toward the end of the cooling section 32 in one direction, and the cooling fluid 28 may flow about the device 24 away from that end of the cooling section 32 in an opposite direction.
  • a first section 50a of the flow path 50 through which the cooling fluid 28 flows in the first direction is preferably positioned proximate the device 24, and a second section 50b of the flow path 50 through which the cooling fluid 28 flows in the second direction is also preferably positioned proximate the device 24.
  • the flow path 50 may be positioned radially between a heat source 48 and the heat-sensitive device 24, with the device 24 being thermally protected by the cooling section 32, and an evacuated flask 44 being positioned radially between the flow path 50 and the heat source 48.
  • the flow path 50 may extend through multiple helically formed tube sections 52a, 52b.
  • the well tool 12 may further comprise a U-turn section 52c joining the tube sections 52a, 52b.
  • the flow path 50 may extend through multiple recesses 58 helically formed in a sleeve 60.
  • the cooling fluid 28 may make multiple passes
  • the well tool 12 which can include the well tool housing 46, the cooling section 32 positioned within the well tool housing 46, the cooling section 32 including the helical cooling fluid flow path 50, and the cooling fluid 28 which flows through the helical flow path 50 toward an end of the cooling section 32 in a first direction, and which flows through the helical flow path 50 away from the end of the cooling section 32 in a second direction opposite to the first direction.
  • the well tool 12 which can include the well tool housing 46, the cooling section 32 positioned within the well tool housing 46, the cooling section 32 including the helical cooling fluid flow path 50, and the cooling fluid 28 which flows through the helical flow path 50, and which makes multiple passes longitudinally through the cooling section 32

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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)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un outil de puits qui peut comprendre un logement d'outil de puits et une section de refroidissement positionnée à l'intérieur du logement d'outil de puits, la section de refroidissement comprenant un trajet d'écoulement de fluide de refroidissement hélicoïdal, et le trajet d'écoulement possédant un inversement de direction à proximité d'une extrémité de la section de refroidissement. Un autre outil de puits peut comprendre un fluide de refroidissement qui s'écoule à travers le trajet d'écoulement hélicoïdal vers l'extrémité de la section de refroidissement dans une direction, et qui s'écoule à travers le trajet d'écoulement hélicoïdal pour s'éloigner de l'extrémité de la section de refroidissement dans une direction opposée. Un autre outil de puits peut comprendre le fluide de refroidissement qui s'écoule à travers le trajet d'écoulement hélicoïdal, et qui réalise de multiples passes longitudinalement à travers la section de refroidissement à proximité d'un dispositif thermosensible.
PCT/US2009/069450 2009-12-23 2009-12-23 Outil de fond de puits et dispositif de refroidissement associé WO2011078868A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2009/069450 WO2011078868A1 (fr) 2009-12-23 2009-12-23 Outil de fond de puits et dispositif de refroidissement associé
US12/958,459 US9732605B2 (en) 2009-12-23 2010-12-02 Downhole well tool and cooler therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2009/069450 WO2011078868A1 (fr) 2009-12-23 2009-12-23 Outil de fond de puits et dispositif de refroidissement associé

Publications (1)

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WO2011078868A1 true WO2011078868A1 (fr) 2011-06-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013104927A1 (fr) * 2012-01-12 2013-07-18 Econotherm Uk Limited Conduit d'échange thermique et échangeur thermique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256708A (en) * 1964-05-28 1966-06-21 Howard W Redfern Refrigerator unit defroster with auxiliary heater
DE3739689A1 (de) * 1987-11-24 1989-06-08 Guenther Fischer Spiralverdampfer
GB2396203A (en) * 2002-12-11 2004-06-16 Schlumberger Holdings Cooling instrumentation in an underground environment
US20070101734A1 (en) * 2005-11-07 2007-05-10 Lucas Philip J Rapid chilling apparatus and method for a beverage-filled container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256708A (en) * 1964-05-28 1966-06-21 Howard W Redfern Refrigerator unit defroster with auxiliary heater
DE3739689A1 (de) * 1987-11-24 1989-06-08 Guenther Fischer Spiralverdampfer
GB2396203A (en) * 2002-12-11 2004-06-16 Schlumberger Holdings Cooling instrumentation in an underground environment
US20070101734A1 (en) * 2005-11-07 2007-05-10 Lucas Philip J Rapid chilling apparatus and method for a beverage-filled container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013104927A1 (fr) * 2012-01-12 2013-07-18 Econotherm Uk Limited Conduit d'échange thermique et échangeur thermique

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