CN101908846A - Method and system for generating through underground temperature difference - Google Patents
Method and system for generating through underground temperature difference Download PDFInfo
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- CN101908846A CN101908846A CN2009100163281A CN200910016328A CN101908846A CN 101908846 A CN101908846 A CN 101908846A CN 2009100163281 A CN2009100163281 A CN 2009100163281A CN 200910016328 A CN200910016328 A CN 200910016328A CN 101908846 A CN101908846 A CN 101908846A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000005678 Seebeck effect Effects 0.000 claims abstract 2
- 238000009413 insulation Methods 0.000 claims description 39
- 238000010248 power generation Methods 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 238000001149 thermolysis Methods 0.000 claims description 2
- 239000011253 protective coating Substances 0.000 abstract 4
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000012774 insulation material Substances 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Abstract
A method and a system for generating through underground temperature difference are the method and system for generating by utilizing the underground temperature condition in the drilling process according to Seebeck effect. The system comprises a drilling pipe with a thermal-protective coating, a drill collar and a temperature difference generating device which comprises a heat transmitting part, a radiating part and a temperature difference generating module. The method comprises the steps of: adding a layer of heat insulation materials in the inner wall of the drilling pipe and the drill collar as the thermal-protective coating, adding a layer of compression-resist anti-corrosion materials on the inner wall of the thermal-protective coating as the inner wall layer so as to form the drilling pipe with a thermal-protective coating and the drill collar, transmitting heat of the outer wall to the heating end of the temperature difference generating module through the heat transmitting part, contacting the radiating part with the mud flowed into the drill collar so as to ensure a lower temperature at the cooling end of the temperature difference generating module, transforming the temperature difference into a potential difference through the temperature difference generating module, and supplying to underground measuring devices like a wireless drilling clinometer after switching through a voltage-stabilizing constant-current circuit or storing and backing up the electric power in a storage battery for the underground measuring device, so as to prolong the continuous working time of the underground measuring devices like a wireless drilling clinometer.
Description
Affiliated technical field
The present invention relates to a kind of method of utilizing thermo-electric generation, it is method and system of utilizing the generating of drilling well downhole temperature difference.
Background technology
At present, the thermo-electric generation technology has been applied to a lot of fields, it is according to Sai Beike (Seebeck) effect, when two kinds of different conductors are connected into the closed-loop path, if its two contacts are placed two different environment of temperature respectively, then just have electric current in the circuit and produce, produce the electromotive force V=a Δ T of electric current, a is a thermoelectric power in the formula, and Δ T is the temperature difference between the contact.But in oil drilling, also do not use this technology as yet, in drilling process along with the influence of well depth and geological environment, the corresponding rising of downhole temperature meeting, in addition drill bit along with the degree of depth of drilling well can with underground rock frictional test, can produce a large amount of heats, this moment is just high more from the near more temperature of drill bit, because mud is to flow to drill bit from drilling rod and in boring very, as long as drilling rod and drill collar internal layer have certain thermal insulation function, and the mud temperature that flows to is lower, just has a bigger temperature difference near the drill collar outer wall layer of bit part and the mud in drilling rod and the drill collar.
Summary of the invention
In order to utilize the temperature difference resource in the drilling process, unnecessary heat is converted to electric energy, this part electric energy can be used for device for subsurface measuring such as wireless drilling inclinometers after the pressure-stabilizing constant flow circuit conversion, also can be in the storage battery of device for subsurface measuring with electrical power storage, thereby the stream time of device for subsurface measuring such as raising wireless drilling inclinometers the invention provides a kind of generating through underground temperature difference method and system.
The technical solution adopted for the present invention to solve the technical problems is: a. adds one deck heat-barrier material at drilling rod and drill collar main body inner wall, be thermal insulation layer, thermal insulation layer will have good resistance to compression and damping behavior, and it is thin as much as possible on the basis that guarantees heat-insulating capability, the thermal insulation layer inwall adds one deck pressure-resistant corrosion-resisting material, be inner wall layer (with the mud contact portion), thereby form drill collar and the drilling rod of being with thermal insulation layer.B. adopt two kinds of semiconductors, two semiconductors are a generating set, hot junction (heat absorbing end) pin connects, cold junction (radiating end) pin disconnects, as the positive-negative power line, the method that greater power generation group series, parallel or connection in series-parallel are combined is formed temperature-difference power generation module to obtain required voltage and current according to actual needs.Specialized designs goes out the heat transfer unit (HTU) of long distance, is the heat transfer part, is made up of heat-sink shell (being made of the superconduction adiabator), heat-insulation layer, resistance to compression layer.Heat-sink shell contacts with the drill collar outer wall layer of band thermal insulation layer.Heat abstractor adopts and leads adiabator, is radiator portion.Radiator portion contacts with the mud that flows into drill collar.Increase the contact area of radiator portion and mud as required as far as possible, to improve rate of heat dissipation.Temperature-difference power generation module, heat-sink shell and heat-insulation layer are sealed in the pressure-proof outer cover, and the positive-negative power line is drawn from pressure-proof outer cover, provides power supply to device for subsurface measuring, and pressure-proof outer cover plays thermolysis simultaneously.Heat transfer part, temperature-difference power generation module, radiator portion are formed temperature difference electricity generation device.Also temperature difference electricity generation device can be built in the drill collar, the drill collar outer wall layer that utilizes the band thermal insulation layer is as the heat transfer part, with inner wall layer as radiator portion.The drill collar of band thermal insulation layer and drilling rod, temperature difference electricity generation device are formed the generating through underground temperature difference system.
In the high-pressure slurry inflow is bored very, during through temperature difference transmitting apparatus, make the cold junction temperature of temperature-difference power generation module keep close after the mud temperature conduction of heat dissipating layer and process with the mud temperature of flowing through, make the cold junction of temperature-difference power generation module that a lower temperature be arranged.The drill collar outer wall layer temperature of band thermal insulation layer can change along with ground temperature and drill bit and the stratum influence that friction generates heat, and the heat transfer part of temperature difference electricity generation device conducts heat to the hot junction of temperature-difference power generation module.Just there has been a temperature difference in the cold junction of temperature-difference power generation module and hot junction, thereby partial heat energy is converted to electric energy.
The invention has the beneficial effects as follows, by be connected with the pressure-stabilizing constant flow circuit can to device for subsurface measuring such as wireless drilling inclinometers power supplies or with electrical power storage in storage battery, standby for device for subsurface measuring such as wireless drilling inclinometers; Adopt the drill collar and the drilling rod of band thermal insulation layer, make that the mud temperature that flows into drill collar and drilling rod is lower, thereby reduced the influence of high temperature, device for subsurface measuring such as directional tool can be used in the high temperature geological environment device for subsurface measuring; The thermal insulation layer of drill collar and drilling rod has certain damping behavior, thereby has reduced the influence of vibration to device for subsurface measuring.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing and example.
Fig. 1 be drill bit, band thermal insulation layer brill very, the overall structure figure of temperature difference electricity generation device, wireless drilling inclinometers embodiment.
Fig. 2 is the drill collar of band thermal insulation layer and the transverse cross-sectional view of drilling rod embodiment.
Fig. 3 is the longitudinal sectional drawing of temperature-difference power generation module embodiment.
Fig. 4 is the longitudinal sectional drawing of temperature difference electricity generation device and band thermal insulation layer drill collar embodiment.
1. temperature difference electricity generation devices among Fig. 1, the 2. drill collar of band thermal insulation layer, 3. wireless drilling inclinometers, 4. drill bit.
1. outer wall layers among Fig. 2,2. thermal insulation layer, 3. inner wall layer.
1.N N-type semiconductor N among Fig. 3,2.P N-type semiconductor N, 3. insulating heat-conductive member.
1. temperature-difference power generation modules among Fig. 4,2. heat-sink shell, 3. heat-insulation layer, 4 resistance to compression layers.
Embodiment
In the embodiment shown in fig. 1, the brill that temperature difference electricity generation device (1) is installed in the band thermal insulation layer that is positioned at drill bit (4) top is endured (2), and wireless drilling inclinometers (3) is positioned at the top of temperature difference electricity generation device (1).
In embodiment illustrated in fig. 2, inner wall layer (3) is fixing from an end and the outer wall layer (1) of drill collar or brill drilling rod, and there is uniform space the centre, the fluent material that forms polyurethane foam plastic is poured in the space into foaming back formation thermal insulation layer (2).
In the embodiment shown in fig. 3, (2) two of N type semiconductor (1) and P type semiconductors are a generating set, each group bottom connects from left to right, second pin of first group of head portion is connected with first pin of second group, second pin of second group is connected with first pin of the 3rd group, three generating set series connection, two ends connect insulating heat-conductive member (3) respectively and form hot junction and cold junction, thereby formed a temperature-difference power generation module, second pin of first pin of first generating set and the 3rd generating set drawn with the lead of outer layer insulation.
In the embodiment shown in fig. 4, the part of heat-sink shell (2) is built in the thermal insulation layer of the drill collar of being with thermal insulation layer, and an end is connected with the outer wall layer of the drill collar of band thermal insulation layer, the part of heat-sink shell (2) is drawn from the thermal insulation layer and the inner wall layer of the drill collar of band thermal insulation layer, its ectomesoderm is heat-insulation layer (3), the other end of heat-sink shell is connected with the hot junction of temperature-difference power generation module (1), the cold junction of temperature-difference power generation module (1) is connected with resistance to compression layer (4), as the heat dissipating layer of temperature-difference power generation module (1), heat-insulation layer (3) and temperature-difference power generation module (1) are sealed in the resistance to compression layer (4) resistance to compression layer (4) simultaneously.
Slurry flows is when the resistance to compression layer, make the temperature-difference power generation module cold junction that a lower temperature be arranged, the outer wall layer heat of the drill collar of heat-sink shell absorption band thermal insulation layer, the low temperature mud that heat-insulation layer keeps the heat of heat-sink shell not flowed to drill bit absorbs, heat-sink shell is given heat delivered the hot junction of temperature-difference power generation module rapidly, hot-side temperature is raise, at this moment the hot junction of generating set and cold junction have just had a temperature difference, the bipod that temperature-difference power generation module is drawn has just had an electromotive force, by being connected with the pressure-stabilizing constant flow circuit, thereby the direct current of output burning voltage and constant current, can give the brill that is installed in the band thermal insulation layer very interior wireless drilling inclinometers power supply, also can be in the storage battery of wireless drilling inclinometers with electrical power storage.
Claims (3)
1. generating through underground temperature difference method and system, it is characterized in that: it is mainly by drill collar and the drilling rod of being with thermal insulation layer, temperature difference electricity generation device is formed, the drill collar of band thermal insulation layer and drilling rod are mainly by outer wall layer, thermal insulation layer, inner wall layer is formed, temperature difference electricity generation device is by temperature-difference power generation module, the heat transfer part, radiator portion is formed, the heat transfer part passes hot junction to temperature-difference power generation module with the part heat of drill collar outer wall layer, radiator portion contacts with the mud that flows into drilling rod and drill collar, make the cold junction of temperature-difference power generation module that a lower temperature be arranged, thereby there is a bigger temperature difference at the two ends that make temperature-difference power generation module, temperature-difference power generation module directly is converted to electrical potential difference with temperature difference by Seebeck effect, by powering to device for subsurface measuring such as wireless drilling inclinometers after the pressure-stabilizing constant flow circuit conversion, also can be in the storage battery of device for subsurface measuring such as wireless drilling inclinometers with electrical power storage, adopt the drill collar and the drilling rod of band thermal insulation layer, make that the mud temperature that flows into drill collar and drilling rod is lower, thereby reduced the influence of high temperature, device for subsurface measuring such as directional tool can be used in the high temperature geological environment device for subsurface measuring.
2. according to claim 1 described generating through underground temperature difference method and system, it is characterized in that: the heat transfer part of temperature difference electricity generation device is made up of heat-sink shell, heat-insulation layer, resistance to compression layer, heat-sink shell contacts with the outer wall layer of the drill collar of band thermal insulation layer and the part nearer apart from bit location, absorb drill bit part heat on every side, heat-sink shell adopts the superconduction adiabator, the hot-side temperature of temperature-difference power generation module can be risen rapidly, and temperature-difference power generation module is sealed in the resistance to compression layer, and the resistance to compression layer plays thermolysis simultaneously.
3. according to claim 1 described generating through underground temperature difference method and system, it is characterized in that: the drilling rod of band thermal insulation layer and drill collar adopt polyurethane foam plastics as the separated material material, this kind material also has certain damping behavior, thereby has reduced the influence of vibration to device for subsurface measuring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910016328.1A CN101908846B (en) | 2009-06-06 | 2009-06-06 | Method and system for generating through underground temperature difference |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910016328.1A CN101908846B (en) | 2009-06-06 | 2009-06-06 | Method and system for generating through underground temperature difference |
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| Publication Number | Publication Date |
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| CN101908846A true CN101908846A (en) | 2010-12-08 |
| CN101908846B CN101908846B (en) | 2015-04-01 |
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| CN200910016328.1A Expired - Fee Related CN101908846B (en) | 2009-06-06 | 2009-06-06 | Method and system for generating through underground temperature difference |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579661A (en) * | 2013-07-24 | 2016-05-11 | 沙特阿拉伯石油公司 | System and method for harvesting energy down-hole from an isothermal segment of a wellbore |
| CN105958870A (en) * | 2016-06-29 | 2016-09-21 | 中国石油大学(华东) | Composite cold-source hot dry rock thermoelectric power generation system and method |
| CN106130406A (en) * | 2016-06-29 | 2016-11-16 | 中国石油大学(华东) | Stratum self low-temperature receiver type hot dry rock thermoelectric heat generation system and method |
| CN108425637A (en) * | 2018-04-13 | 2018-08-21 | 吉林大学 | A kind of generating power downhole drilling rod and its electricity-generating method |
| CN108457609A (en) * | 2018-03-23 | 2018-08-28 | 吉林大学 | A kind of temperature difference power generation type high temperature mud cooling recirculation system |
| CN110021988A (en) * | 2019-04-28 | 2019-07-16 | 中国石油集团渤海钻探工程有限公司 | Thermal type thermoelectricity down-hole power |
| CN110234872A (en) * | 2017-01-17 | 2019-09-13 | 海普赛尔斯公司 | The system of acoustic navigation for drilling |
| CN110778310A (en) * | 2019-10-12 | 2020-02-11 | 中国海洋石油集团有限公司 | Installation inclinometer while drilling |
| CN111082706A (en) * | 2019-12-28 | 2020-04-28 | 西南石油大学 | Temperature difference power generation method and device in gas drilling drill string |
| US11052585B2 (en) | 2017-04-10 | 2021-07-06 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a foamed decorable support part for a motor vehicle, sheet for use in such a method and foamed decorable support part |
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| JP4114528B2 (en) * | 2003-03-26 | 2008-07-09 | ヤマハ株式会社 | Thermoelectric generator |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4114528B2 (en) * | 2003-03-26 | 2008-07-09 | ヤマハ株式会社 | Thermoelectric generator |
| CN1897445A (en) * | 2005-07-12 | 2007-01-17 | 孟英志 | Generation and generator, energy conversion and converter |
| CN1848657A (en) * | 2006-03-15 | 2006-10-18 | 大连海事大学 | Porous dielectric ultra-adiabatic combustion temperature difference power generating method under reciprocating flouing and apparatus thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579661B (en) * | 2013-07-24 | 2018-03-06 | 沙特阿拉伯石油公司 | System and method for obtaining underground energy from the isothermal section of pit shaft |
| CN105579661A (en) * | 2013-07-24 | 2016-05-11 | 沙特阿拉伯石油公司 | System and method for harvesting energy down-hole from an isothermal segment of a wellbore |
| CN105958870A (en) * | 2016-06-29 | 2016-09-21 | 中国石油大学(华东) | Composite cold-source hot dry rock thermoelectric power generation system and method |
| CN106130406A (en) * | 2016-06-29 | 2016-11-16 | 中国石油大学(华东) | Stratum self low-temperature receiver type hot dry rock thermoelectric heat generation system and method |
| CN105958870B (en) * | 2016-06-29 | 2017-11-21 | 中国石油大学(华东) | Compound low-temperature receiver hot dry rock thermoelectric heat generation system and method |
| CN110234872A (en) * | 2017-01-17 | 2019-09-13 | 海普赛尔斯公司 | The system of acoustic navigation for drilling |
| US11052585B2 (en) | 2017-04-10 | 2021-07-06 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a foamed decorable support part for a motor vehicle, sheet for use in such a method and foamed decorable support part |
| CN108457609A (en) * | 2018-03-23 | 2018-08-28 | 吉林大学 | A kind of temperature difference power generation type high temperature mud cooling recirculation system |
| CN108425637A (en) * | 2018-04-13 | 2018-08-21 | 吉林大学 | A kind of generating power downhole drilling rod and its electricity-generating method |
| CN110021988A (en) * | 2019-04-28 | 2019-07-16 | 中国石油集团渤海钻探工程有限公司 | Thermal type thermoelectricity down-hole power |
| CN110021988B (en) * | 2019-04-28 | 2022-04-12 | 中国石油集团渤海钻探工程有限公司 | Temperature difference type thermoelectric downhole power supply |
| CN110778310A (en) * | 2019-10-12 | 2020-02-11 | 中国海洋石油集团有限公司 | Installation inclinometer while drilling |
| CN111082706A (en) * | 2019-12-28 | 2020-04-28 | 西南石油大学 | Temperature difference power generation method and device in gas drilling drill string |
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| CN101908846B (en) | 2015-04-01 |
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