US20130075097A1 - Borehole tool heat transfer altering system and method, and method of heating borehole fluid - Google Patents
Borehole tool heat transfer altering system and method, and method of heating borehole fluid Download PDFInfo
- Publication number
- US20130075097A1 US20130075097A1 US13/246,317 US201113246317A US2013075097A1 US 20130075097 A1 US20130075097 A1 US 20130075097A1 US 201113246317 A US201113246317 A US 201113246317A US 2013075097 A1 US2013075097 A1 US 2013075097A1
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- US
- United States
- Prior art keywords
- borehole tool
- heat transfer
- borehole
- altering
- 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.)
- Abandoned
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/005—Heater surrounding production tube
Definitions
- Tubular systems employed in earth formation borehole applications such as the downhole completion and carbon dioxide sequestration industries, for example, often employ mechanical devices such as, motors and pumps, as well as electrical components, such as, circuits and computers for a variety of purposes.
- Operating temperatures of such devices can be determined by temperatures of environments surrounding the devices and by energy consumed by the devices themselves in the process of normal operation. Operating devices at temperatures outside of recommended temperature ranges can detrimentally affect performance of the device including efficiency and durability, for example. Systems and methods that aid in altering temperature of such devices are well received in the art.
- the system includes, a borehole tool, and a thermoelectric material in operable communication with the borehole tool configured to alter heat transfer between the borehole tool and an environment surrounding the borehole tool.
- the method includes electrically energizing thermoelectric material in operable communication with a borehole tool and an environment, and altering heat transfer between the borehole tool and the environment.
- the method includes, electrically energizing a thermoelectric material, and increasing transfer of heat from a borehole tool to borehole fluids through the thermoelectric material.
- the method includes, increasing heat transfer between a borehole tool and fluid within a wellbore, decreasing viscosity of the fluid, and pumping the fluid.
- FIG. 1 depicts an end view of a borehole tool heat transfer altering system disclosed herein;
- FIG. 2 depicts a cross sectioned side view of the borehole tool heat transfer altering system of FIG. 1 taken at arrows 2 - 2 ;
- FIG. 3 depicts a partially sectioned perspective view of a portion of a layered assembly employed in the construction of the borehole tool heat transfer altering system of FIG. 1 ;
- FIG. 4 depicts a sequential representation of steps employed during an embodiment of a construction process for the borehole tool heat transfer altering system of FIG. 1 ;
- FIG. 5 depicts a schematical view of a completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein;
- FIG. 6 depicts a schematical view of another completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein;
- FIG. 7 depicts a schematical view of another completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein.
- the borehole tool heat transfer altering system 10 works on the principle of the Seebeck effect to convert electricity supplied to a thermoelectric material directly into temperature differences across the thermoelectric material, and uses no moving parts in the process.
- the borehole tool heat transfer altering system 10 includes, a layered assembly 14 , conformed to a surface 18 (an outer surface in this embodiment) of a tubular 22 .
- the layered assembly 14 has a core 26 of thermoelectric material 30 , with conductors 34 , 38 , shown herein as layers of conductive material, electrically bonded to opposing surfaces 44 , 48 of the thermoelectric material 30 .
- a protector 50 including layers 54 , 58 of electrically insulative material electrically insulates the conductors 34 , 38 while fluidically isolating the conductors 34 , 38 and the thermoelectric material 30 from an environment that the borehole tool heat transfer altering system 10 is submerged within.
- Terminals 64 , 68 sealably penetrate the protector 50 and are electrically connected to the conductors 34 , 38 respectively.
- the foregoing structure creates a temperature gradient radially across the thermoelectric material 30 when an electrical potential is applied to the conductors 34 , 38 .
- Connection to the terminals 64 , 68 allow the electrical energy from a source (not shown) to be supplied to the conductors 34 , 38 .
- thermoelectric material 30 that constitutes the core 26 can be made of solid composite materials as described in the paper, “Thermoelectric Behavior of Segregated-Network Polymer Nanocomposites,” James C. Grunlan, et al.; Nano Letters, 2008 Vol. 8, No. 12, pgs. 4428-4432, incorporated herein by reference in its entirety. Although this thermoelectric material includes both polymeric particles and carbon nano-particles, alternate thermoelectric materials may be employed as long as they meet the requirements outlined herein.
- the thermoelectric material 30 can be processed by methods, such as, casting or extruding, for example, to form a sheet of the core 26 .
- the conductors 34 , 38 are electrically and optionally mechanically bonded to the surfaces 44 , 48 respectively.
- the conductors can be made of conductive materials, such as, copper, gold, silver or aluminum, for example. These materials can be bonded to the core 26 in one of several ways including, vapor deposition, soldering and brazing, for example.
- the insulative layers 54 , 58 are bonded to the conductors 34 , 38 respectively.
- the insulative layers 54 , 48 may be sheets of insulative material such as polymeric, elastomeric or glass, for example.
- the insulative layers 54 , 58 can be bonded to the conductors 34 , 48 through chemical and mechanical means such as bonding with an adhesive agent, for example. Portions 74 , 78 of the layers 54 , 58 that extend beyond the core 26 and the conductors 34 , 38 can be sealably attached to one another through adhesive means compatible with the material that the insulative layers 54 , 58 are constructed of In alternate embodiments the insulative layers 54 , 58 can be applied to the core 26 and the conductors 34 , 38 by conformal coating processes, such as, by dipping or spraying, for example.
- the terminals 64 , 68 can be electrically connected to the conductors 34 , 38 either before or after the insulative layers 54 , 48 are applied. Processes, such as, soldering, welding and brazing of the terminals 64 , 68 to the conductors 34 , 38 may be facilitated by doing so prior to application of the layers 54 , 58 over the conductors 34 , 38 . Electrical attachment of the terminals 64 , 68 to the conductors 34 , 38 after the layers 54 , 58 are applied can be done by insulation displacement methods.
- the layered assembly 14 can be heated above a glass transition temperature of the materials employed and then rolled about a perimeter of a die 82 to a desired shape, such, as a cylinder 86 , for example, as illustrated in this embodiment. After this forming operation, the layered assembly 14 can be cooled, to a temperature below the glass transition temperature, after which the die 82 may be removed therefrom. The formed layered assembly 14 can then be assembled about the tubular 22 and attached thereto by adhesive, clamping, or wrapping with another material, for example. Alternately, the layered assembly 14 can be formed directly onto the outer surface 18 of the tubular 22 thereby employing the tubular 22 as the die 82 in the forming process directly.
- thermoelectric material 30 may be extruded, as opposed to being cast, for example, it can be extruded directly into a desired shape, (i.e. the cylinder 86 in the example illustrated). Consequently, the shape of the core 26 of the thermoelectric material 30 , as formed, can strongly influence which methods should be employed to bond the conductors 34 , 38 and the insulative layers 54 , 58 thereto. Regardless of the methods of assembly employed, however, the functioning of the finished borehole tool heat transfer altering system 10 should not be significantly altered.
- FIG. 5 an embodiment of the borehole tool heat transfer altering system 10 disclosed herein is shown employed in a downhole completion 86 .
- the completion 86 includes a tool string 90 having a pump 94 driven by a motor 98 .
- a protector 102 is shown in operable communication with the motor 98 and the pump 94 to among other things equalize pressure between an inside and an outside of the motor 98 while sealing the inside from the outside.
- the motor 98 in this embodiment, is electrically energized to drive the pump 94 that pumps wellbore fluid 106 from within an annular space 110 defined between the tool string 90 and a wellbore 114 .
- the wellbore fluid 106 may by oil or other hydrocarbons, for example, during production in a hydrocarbon recovery operation.
- the system 10 is employed in alternate completion 116 .
- the system 10 is employed in a radiator 120 .
- the radiator 120 is longitudinally displaced from the motor 98 but is thermally coupled to the motor 98 through a fluid (not shown) that circulates between the motor 98 and the radiator 120 to maintain both the radiator 120 and the motor 98 at nearly the same temperature.
- the system 10 is able to increase heat transfer between the motor 98 and the fluid 106 as well.
- the system 10 is employed in alternate completion 122 .
- this embodiment also employs the radiator 120 .
- the radiator 120 here, however, is positioned longitudinally between the motor 98 and the pump 94 .
- the inlets 124 for the fluid 106 to enter the pump 94 are in the radiator 120 . This causes the fluid 106 to flow through the radiator 120 before reaching the pump 94 . Doing so causes the fluid 106 to increase in temperature as heat from the motor 98 is transferred thereto by the system 10 . This increase in temperature of the fluid 106 can cause viscosity of the fluid 106 to decrease which allows it to be pumped more easily thereby increasing operational efficiency of the completion 86 .
Abstract
A borehole tool heat transfer altering system includes, a borehole tool, and a thermoelectric material in operable communication with the borehole tool configured to alter heat transfer between the borehole tool and an environment surrounding the borehole tool.
Description
- Tubular systems employed in earth formation borehole applications such as the downhole completion and carbon dioxide sequestration industries, for example, often employ mechanical devices such as, motors and pumps, as well as electrical components, such as, circuits and computers for a variety of purposes. Operating temperatures of such devices can be determined by temperatures of environments surrounding the devices and by energy consumed by the devices themselves in the process of normal operation. Operating devices at temperatures outside of recommended temperature ranges can detrimentally affect performance of the device including efficiency and durability, for example. Systems and methods that aid in altering temperature of such devices are well received in the art.
- Disclosed herein is a borehole tool heat transfer altering system. The system includes, a borehole tool, and a thermoelectric material in operable communication with the borehole tool configured to alter heat transfer between the borehole tool and an environment surrounding the borehole tool.
- Further disclosed herein is a method of altering heat transfer to a borehole tool. The method includes electrically energizing thermoelectric material in operable communication with a borehole tool and an environment, and altering heat transfer between the borehole tool and the environment.
- Further disclosed herein is a method of heating borehole fluids. The method includes, electrically energizing a thermoelectric material, and increasing transfer of heat from a borehole tool to borehole fluids through the thermoelectric material.
- Further disclosed herein is a method of increasing efficiency of a borehole pumping operation. The method includes, increasing heat transfer between a borehole tool and fluid within a wellbore, decreasing viscosity of the fluid, and pumping the fluid.
- The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
-
FIG. 1 depicts an end view of a borehole tool heat transfer altering system disclosed herein; -
FIG. 2 depicts a cross sectioned side view of the borehole tool heat transfer altering system ofFIG. 1 taken at arrows 2-2; -
FIG. 3 depicts a partially sectioned perspective view of a portion of a layered assembly employed in the construction of the borehole tool heat transfer altering system ofFIG. 1 ; -
FIG. 4 depicts a sequential representation of steps employed during an embodiment of a construction process for the borehole tool heat transfer altering system ofFIG. 1 ; -
FIG. 5 depicts a schematical view of a completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein; -
FIG. 6 depicts a schematical view of another completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein; and -
FIG. 7 depicts a schematical view of another completion employing an embodiment of a borehole tool heat transfer altering system disclosed herein. - A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
- Referring to
FIGS. 1-3 , an embodiment of a borehole tool heat transfer altering system is disclosed generally at 10. The borehole tool heattransfer altering system 10 works on the principle of the Seebeck effect to convert electricity supplied to a thermoelectric material directly into temperature differences across the thermoelectric material, and uses no moving parts in the process. The borehole tool heattransfer altering system 10 includes, alayered assembly 14, conformed to a surface 18 (an outer surface in this embodiment) of a tubular 22. Thelayered assembly 14 has acore 26 ofthermoelectric material 30, withconductors surfaces thermoelectric material 30. Aprotector 50 includinglayers conductors conductors thermoelectric material 30 from an environment that the borehole tool heattransfer altering system 10 is submerged within.Terminals protector 50 and are electrically connected to theconductors thermoelectric material 30 when an electrical potential is applied to theconductors terminals conductors - Referring to
FIG. 3 , thelayered assembly 14 is shown in a flat position with portions of each layer removed for illustrative purposes. Thethermoelectric material 30 that constitutes thecore 26 can be made of solid composite materials as described in the paper, “Thermoelectric Behavior of Segregated-Network Polymer Nanocomposites,” James C. Grunlan, et al.; Nano Letters, 2008 Vol. 8, No. 12, pgs. 4428-4432, incorporated herein by reference in its entirety. Although this thermoelectric material includes both polymeric particles and carbon nano-particles, alternate thermoelectric materials may be employed as long as they meet the requirements outlined herein. Thethermoelectric material 30 can be processed by methods, such as, casting or extruding, for example, to form a sheet of thecore 26. After which, in this embodiment, theconductors surfaces core 26 in one of several ways including, vapor deposition, soldering and brazing, for example. Theinsulative layers conductors insulative layers insulative layers conductors Portions layers core 26 and theconductors insulative layers insulative layers core 26 and theconductors - The
terminals conductors insulative layers terminals conductors layers conductors terminals conductors layers terminals conductors layers layers conductors thermoelectric material 30 from fluids and other environmental conditions within which thelayered assembly 14 may be submerged. - Referring to
FIG. 4 , thelayered assembly 14 can be heated above a glass transition temperature of the materials employed and then rolled about a perimeter of adie 82 to a desired shape, such, as acylinder 86, for example, as illustrated in this embodiment. After this forming operation, thelayered assembly 14 can be cooled, to a temperature below the glass transition temperature, after which the die 82 may be removed therefrom. The formedlayered assembly 14 can then be assembled about the tubular 22 and attached thereto by adhesive, clamping, or wrapping with another material, for example. Alternately, thelayered assembly 14 can be formed directly onto theouter surface 18 of thetubular 22 thereby employing thetubular 22 as the die 82 in the forming process directly. - Since, as mentioned above, the
thermoelectric material 30 may be extruded, as opposed to being cast, for example, it can be extruded directly into a desired shape, (i.e. thecylinder 86 in the example illustrated). Consequently, the shape of thecore 26 of thethermoelectric material 30, as formed, can strongly influence which methods should be employed to bond theconductors insulative layers transfer altering system 10 should not be significantly altered. - Referring to
FIG. 5 , an embodiment of the borehole tool heattransfer altering system 10 disclosed herein is shown employed in adownhole completion 86. Thecompletion 86 includes atool string 90 having apump 94 driven by amotor 98. Aprotector 102 is shown in operable communication with themotor 98 and thepump 94 to among other things equalize pressure between an inside and an outside of themotor 98 while sealing the inside from the outside. Themotor 98, in this embodiment, is electrically energized to drive thepump 94 that pumpswellbore fluid 106 from within anannular space 110 defined between thetool string 90 and awellbore 114. Thewellbore fluid 106 may by oil or other hydrocarbons, for example, during production in a hydrocarbon recovery operation. - Electrical energy and friction within the
motor 98 during normal operation can cause heating thereof. This increase in temperature can have detrimental effects on themotor 98 itself Systems and methods that decrease the operating temperature of themotor 98 can therefore prolong the life of themotor 98 decreasing downtime of thecompletion 86 and increasing production in the process. The borehole tool heattransfer altering system 10 attached around themotor 98 serves this function and increases heat transfer from themotor 98 to thefluid 106 surrounding the assembly thereby lowering the operating temperature of themotor 98. - Referring to
FIG. 6 thesystem 10 is employed inalternate completion 116. In this embodiment, instead of thesystem 10 directly surrounding themotor 98, as it did in the previous embodiment, thesystem 10 is employed in aradiator 120. Theradiator 120 is longitudinally displaced from themotor 98 but is thermally coupled to themotor 98 through a fluid (not shown) that circulates between themotor 98 and theradiator 120 to maintain both theradiator 120 and themotor 98 at nearly the same temperature. As such, by increasing heat transfer between theradiator 120 and the fluid 106, thesystem 10 is able to increase heat transfer between themotor 98 and the fluid 106 as well. - Referring to
FIG. 7 thesystem 10 is employed inalternate completion 122. As in the previous embodiment this embodiment also employs theradiator 120. Theradiator 120 here, however, is positioned longitudinally between themotor 98 and thepump 94. Additionally, theinlets 124 for the fluid 106 to enter thepump 94 are in theradiator 120. This causes the fluid 106 to flow through theradiator 120 before reaching thepump 94. Doing so causes the fluid 106 to increase in temperature as heat from themotor 98 is transferred thereto by thesystem 10. This increase in temperature of the fluid 106 can cause viscosity of the fluid 106 to decrease which allows it to be pumped more easily thereby increasing operational efficiency of thecompletion 86. - While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. Furthermore, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
Claims (17)
1. A borehole tool heat transfer altering system comprising:
a borehole tool; and
a thermoelectric material in operable communication with the borehole tool configured to alter heat transfer between the borehole tool and an environment surrounding the borehole tool.
2. The borehole tool heat transfer altering system of claim 1 , wherein the alteration of heat transfer causes a cooling of the borehole tool.
3. The borehole tool heat transfer altering system of claim 1 , wherein at least one portion of the borehole tool is tubular and the thermoelectric material is contoured to conform to the at least one portion.
4. The borehole tool heat transfer altering system of claim 1 , further comprising at least two conductors in operable communication with the thermoelectric material.
5. The borehole tool heat transfer altering system of claim 1 , wherein the borehole tool is a motor.
6. The borehole tool heat transfer altering system of claim 1 , wherein the thermoelectric material is disposed at a radiator that alters heat transfer between the borehole tool and an environment.
7. The borehole tool heat transfer altering system of claim 6 , wherein fluid flows through the radiator before entering a pump.
8. The borehole tool heat transfer altering system of claim 7 , wherein the fluid includes oil.
9. A method of altering heat transfer to a borehole tool, comprising:
electrically energizing thermoelectric material in operable communication with a borehole tool and an environment; and
altering heat transfer between the borehole tool and the environment.
10. The method of altering heat transfer to a borehole tool of claim 9 , wherein the altering heat transfer between the borehole tool and the environment is a cooling of the borehole tool and a heating of the environment.
11. The method of altering heat transfer to a borehole tool of claim 9 , further comprising positioning the thermoelectric material so that it surrounds the borehole tool.
12. The method of altering heat transfer to a borehole tool of claim 9 , further comprising circulating fluid between a radiator in operable communication with the thermoelectric material and the borehole tool.
13. A method of heating borehole fluids, comprising:
electrically energizing a thermoelectric material; and
increasing transfer of heat from a borehole tool to borehole fluids through the thermoelectric material.
14. The method of heating borehole fluids of claim 13 , further comprising generating heat in the borehole tool electrically.
15. The method of heating borehole fluids of claim 13 , further comprising generating heat in the borehole tool frictionally.
16. A method of increasing efficiency of a borehole pumping operation, comprising:
increasing heat transfer between a borehole tool and fluid within a wellbore;
decreasing viscosity of the fluid; and
pumping the fluid.
17. The method of increasing efficiency of a borehole pumping operation of claim 16 , further comprising heating the fluid.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/246,317 US20130075097A1 (en) | 2011-09-27 | 2011-09-27 | Borehole tool heat transfer altering system and method, and method of heating borehole fluid |
DE102012216105A DE102012216105A1 (en) | 2011-09-27 | 2012-09-12 | A system and method for changing heat transfer in a downhole tool and method of heating a wellbore fluid |
CA2790880A CA2790880A1 (en) | 2011-09-27 | 2012-09-25 | Borehole tool heat transfer altering system and method, and method of heating borehole fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/246,317 US20130075097A1 (en) | 2011-09-27 | 2011-09-27 | Borehole tool heat transfer altering system and method, and method of heating borehole fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130075097A1 true US20130075097A1 (en) | 2013-03-28 |
Family
ID=47909972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/246,317 Abandoned US20130075097A1 (en) | 2011-09-27 | 2011-09-27 | Borehole tool heat transfer altering system and method, and method of heating borehole fluid |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130075097A1 (en) |
CA (1) | CA2790880A1 (en) |
DE (1) | DE102012216105A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091181A (en) * | 1962-02-23 | 1963-05-28 | William C Wolf | Deep well submersible pumping unit |
US4685867A (en) * | 1978-09-22 | 1987-08-11 | Borg-Warner Corporation | Submersible motor-pump |
US5547028A (en) * | 1994-09-12 | 1996-08-20 | Pes, Inc. | Downhole system for extending the life span of electronic components |
US20100047089A1 (en) * | 2008-08-20 | 2010-02-25 | Schlumberger Technology Corporation | High temperature monitoring system for esp |
-
2011
- 2011-09-27 US US13/246,317 patent/US20130075097A1/en not_active Abandoned
-
2012
- 2012-09-12 DE DE102012216105A patent/DE102012216105A1/en not_active Withdrawn
- 2012-09-25 CA CA2790880A patent/CA2790880A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3091181A (en) * | 1962-02-23 | 1963-05-28 | William C Wolf | Deep well submersible pumping unit |
US4685867A (en) * | 1978-09-22 | 1987-08-11 | Borg-Warner Corporation | Submersible motor-pump |
US5547028A (en) * | 1994-09-12 | 1996-08-20 | Pes, Inc. | Downhole system for extending the life span of electronic components |
US20100047089A1 (en) * | 2008-08-20 | 2010-02-25 | Schlumberger Technology Corporation | High temperature monitoring system for esp |
Also Published As
Publication number | Publication date |
---|---|
DE102012216105A1 (en) | 2013-05-29 |
CA2790880A1 (en) | 2013-03-27 |
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Legal Events
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AS | Assignment |
Owner name: BAKER HUGHES INCORPORATED, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GERRARD, DAVID PETER;REEL/FRAME:027687/0043 Effective date: 20111213 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |