CN203050661U - Combined gravity heat pipe for well bore of oil production well - Google Patents
Combined gravity heat pipe for well bore of oil production well Download PDFInfo
- Publication number
- CN203050661U CN203050661U CN 201220656025 CN201220656025U CN203050661U CN 203050661 U CN203050661 U CN 203050661U CN 201220656025 CN201220656025 CN 201220656025 CN 201220656025 U CN201220656025 U CN 201220656025U CN 203050661 U CN203050661 U CN 203050661U
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- China
- Prior art keywords
- heat pipe
- gravity assisted
- assisted heat
- pipe unit
- pit shaft
- 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.)
- Expired - Fee Related
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 115
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 50
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 3
- 230000001976 improved effect Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a combined gravity assisted heat pipe for a well bore of an oil production well, which comprises at least two gravity assisted heat pipe units, wherein the gravity assisted heat pipe units are continuous hollow sucker rods, the upper and lower ends of the gravity assisted heat pipe units are respectively provided with a sealing plug, the inner cavity of the gravity assisted heat pipe unit is a closed cavity, working media are filled in the closed cavity, and the sealing plug is concavely provided with a connecting groove towards the center of the gravity assisted heat pipe unit; each gravity heat pipe unit is connected with each other sequentially through the connector to form a combined gravity heat pipe of a well shaft of the oil production well, the upper end and the lower end of the connector are correspondingly embedded in the connecting grooves of the two opposite sealing plugs between the two adjacent gravity heat pipe units and are fixedly connected with the side walls of the connecting grooves in a screwed mode, when the combined gravity heat pipe is placed under the well, each gravity heat pipe unit can be sequentially and upwards transmitted to the upper-level gravity heat pipe unit from the bottom of the well, and then the gravity heat pipe unit is upwards transmitted to the well mouth step by step, the temperature profile of fluid of the well shaft can be improved, the temperature of the fluid at the well mouth can be improved, and.
Description
Technical field
The utility model belongs to pit shaft oil recovery technique field, relate to a kind of device that improves producing well wellbore fluids temperature profile, particularly a kind of being applicable under conventional oil production method improved the temperature of resulting fluid to reach the producing well pit shaft combined type gravity assisted heat pipe of resulting fluid viscosity reduction.
Background technology
At present, domesticly the pit shaft gravity assisted heat pipe is improved wellbore fluids temperature profile aspect study, this method has overcome wellbore fluids viscosity reducing process commonly used such as hot fluid circulation, pit shaft electrical heating, chemical viscosity reduction and caused the huge waste of heat and the defective of output liquid post processing problem in actual application, can utilize the energy on stratum self to improve the temperature profile of wellbore fluids, improve the temperature of resulting fluid, reach the purpose of resulting fluid viscosity reduction, therefore, pit shaft gravity assisted heat pipe technology has sizable advantage aspect energy-conservation.
Yet existing pit shaft gravity assisted heat pipe is single overlength heat pipe, is formed with the heat pipe of a longer inner chamber.In use find, because this overlength heat pipe is single inner chamber, be unfavorable for heat is passed to well head by the shaft bottom, the risk that heat transfer was lost efficacy takes place easily, make the raising of resulting fluid temperature, be subjected to certain limitation.
Therefore, a kind of producing well pit shaft of necessary design combined type gravity assisted heat pipe is to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of producing well pit shaft combined type gravity assisted heat pipe, and it can improve the wellbore fluids temperature profile better, improve the resulting fluid temperature, has effectively overcome the risk that traditional overlength gravity assisted heat pipe lost efficacy.
For this reason, the utility model proposes a kind of producing well pit shaft combined type gravity assisted heat pipe, it comprises at least two gravity heat pipe unit, described gravity assisted heat pipe unit is a continuous hollow rod, its upper/lower terminal is respectively equipped with a seal plug, so that the inner chamber of described gravity assisted heat pipe unit is an enclosed cavity, be filled with the working medium that when being heated, can form gaseous state in the described enclosed cavity, and described seal plug is concaved with a link slot towards the direction of described gravity assisted heat pipe unit center;
Wherein, link to each other by a described connector successively between each described gravity assisted heat pipe unit, to form described producing well pit shaft combined type gravity assisted heat pipe, the upper/lower terminal correspondence of described connector is embedded in the link slot of two relative between the two adjacent described gravity assisted heat pipe unit described seal plugs, and is spirally connected fixing with the sidewall of described link slot.
Aforesaid producing well pit shaft combined type gravity assisted heat pipe, wherein, be provided with an adapter in the link slot of the seal plug of each upper end, described gravity assisted heat pipe unit, the inner of described adapter is connected with described enclosed cavity by the interface of described link slot bottom, its outer end is formed with two arms, wherein arrange one on the described arm and vacuumize control valve, another described arm is provided with a working medium and adds control valve.
Aforesaid producing well pit shaft combined type gravity assisted heat pipe, wherein, the notch of the link slot of described seal plug outwards is equipped with an ear, and described ear correspondence is fastened on the port of described gravity assisted heat pipe unit.
Aforesaid producing well pit shaft combined type gravity assisted heat pipe, wherein, the port of described gravity assisted heat pipe unit and the link slot joint of described seal plug further are sealed with the high strength fluid sealant.
Aforesaid producing well pit shaft combined type gravity assisted heat pipe, wherein, described working medium is water, methyl alcohol, acetone or freon.
The producing well pit shaft combined type gravity assisted heat pipe that the utility model provides adopts continuous hollow rod to combine, and reduced the risk that the pit shaft gravity assisted heat pipe lost efficacy, have energy-conservation, combination flexibly, be applied to advantages such as power height and better effects if.
In addition, the producing well pit shaft combined type gravity assisted heat pipe that the utility model provides, formed by at least two separate gravity assisted heat pipe unit combination, every section gravity assisted heat pipe unit constitutes by adding working media in the enclosed cavity of continuous hollow rod, and the length of the quantity of gravity assisted heat pipe unit, each section gravity assisted heat pipe unit and built-in working media are according to specifically the physical properties of fluids parameter of producing well and the temperature that resulting fluid requires to reach are determined; Because the selection of each gravity assisted heat pipe unit working medium has more flexibility, different working medium can be added in inside, every section gravity assisted heat pipe unit; When described producing well pit shaft combined type gravity assisted heat pipe unit is positioned in the pit shaft, because each described gravity assisted heat pipe unit is mutually independent, can form a heat transfer unit respectively, by the circulating phase-change improved effect wellbore fluids temperature profile of internal work medium separately, so that heat upwards transmits through each described gravity assisted heat pipe unit successively step by step from the shaft bottom, synergy by each section gravity assisted heat pipe unit, can improve the wellbore fluids temperature profile better, improve the resulting fluid temperature, reduce wellbore fluids viscosity, effectively reduce the risk of traditional overlength gravity assisted heat pipe element failure.
The producing well pit shaft combined type gravity assisted heat pipe that the utility model provides, can avoid other pit shaft companion hot mode to cause expending in a large number of energy, reduce the number of times that inspection pump and heat are washed, improve the success rate of pit shaft gravity assisted heat pipe unit application, more be conducive to improve the resulting fluid temperature, further improve the economic benefit of oil field development, be specially adapted under conventional oil production method, the resulting fluid temperature be lower than or the producing well pit shaft near former oil freezing point in.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.
Wherein:
Fig. 1 is the combination schematic diagram of producing well pit shaft combined type gravity assisted heat pipe of the present utility model, has shown its use state;
Fig. 2 is the composition structural representation of single gravity assisted heat pipe unit in the utility model, and has shown heat transfer process in single gravity assisted heat pipe unit in use;
Fig. 3 is the partial enlarged drawing at H place among Fig. 2.
The critical element label declaration:
10-combined type gravity assisted heat pipe, 1-gravity assisted heat pipe unit, 11-enclosed cavity, 12-working medium, 2-seal plug, 21-link slot, the 210-interface, 211-takes over, the 212-arm, 213-ear, 22-vacuumizes control valve, and 23-working medium is added control valve, the 3-connector, 4-oil well pump, 5-sleeve pipe, the 6-oil pipe, the 7-oil pumper.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
Fig. 1 is the combination schematic diagram of producing well pit shaft combined type gravity assisted heat pipe of the present utility model, has shown its use state; Fig. 2 is the composition structural representation of single gravity assisted heat pipe unit in the utility model, and has shown heat transfer process in single gravity assisted heat pipe unit in use; Fig. 3 is the partial enlarged drawing at H place among Fig. 2.
Referring to Fig. 1, a kind of producing well pit shaft combined type gravity assisted heat pipe 10 that the utility model proposes, it comprises at least two gravity heat pipe unit 1, described gravity assisted heat pipe unit 1 is a continuous hollow rod, on it, following two ends are respectively equipped with a seal plug 2, so that the inner chamber of described gravity assisted heat pipe unit 1 is an enclosed cavity 11, be filled with the working medium 12 that when being heated, can form gaseous state in the described enclosed cavity 11, and described seal plug 2 is concaved with a link slot 21 towards the direction at 1 center, described gravity assisted heat pipe unit, and namely seal plug 2 is concaved with this link slot by the outer end to the enclosed cavity of gravity assisted heat pipe unit; Wherein, link to each other by a described connector 3 successively between each described gravity assisted heat pipe unit 1, to form described producing well pit shaft combined type gravity assisted heat pipe 10, on the described connector 3, following two ends correspondence is embedded in the link slot 21 of two relative between the two adjacent described gravity assisted heat pipe unit 1 described seal plugs 2, and be spirally connected fixing with the sidewall of described link slot 21, therefore, when described producing well pit shaft combined type gravity assisted heat pipe 10 is positioned in the pit shaft, because each described gravity assisted heat pipe unit 1 is mutually independent, can form a heat transfer unit respectively, after heat is absorbed by the described gravity assisted heat pipe of next stage unit 1 from the shaft bottom, upwards be passed to the described gravity assisted heat pipe unit 1 of upper level successively, and then heat upwards is passed to well head step by step.In addition, for improving the utility model corrosion resistance in use, also can do Passivation Treatment to the inwall of every gravity assisted heat pipe unit.
It is to be noted, the producing well pit shaft combined type gravity assisted heat pipe that the utility model proposes, the length of the quantity of each gravity assisted heat pipe unit, each section gravity assisted heat pipe unit and built-in working media are according to specifically the physical properties of fluids parameter of producing well and the temperature that resulting fluid requires to reach are determined; In addition, the utility model adopts continuous hollow rod, can improve the resulting fluid temperature effectively, reduce wellbore fluids viscosity.
Preferred embodiment be, be provided with one in the link slot 21 of the seal plug 2 of each 1 upper end, described gravity assisted heat pipe unit and take over 211, the inner of described adapter 211 is connected with described enclosed cavity 11 by the interface 210 of described link slot bottom, its outer end is formed with two arms 212, wherein arrange one on the described arm 212 and vacuumize control valve 22, another described arm 212 is provided with a working medium and adds control valve 23, in use, seal the lower end of gravity assisted heat pipe unit and in enclosed cavity, fill working medium by the upper end with elder generation, the working medium filling mode of closed upper end is compared again, after the closed at both ends with the gravity assisted heat pipe unit, can be vacuumized by taking over 210 pairs of described enclosed cavities 11 of 211 inner chambers and interface by the described control valve 22 that vacuumizes earlier, make described enclosed cavity have certain vacuum (such as more than 10KPa), close again and vacuumize control valve 22, and add valve 23 through taking over 211 and interface 210 described working medium of interpolation in the described enclosed cavity 11 by described working medium, afterwards, close working medium and add control valve 23, can be with the outer end sealing of taking over, working medium in the enclosed cavity then can form the gas-liquid two-phase state, again each gravity assisted heat pipe unit is connected at last, can forms this producing well pit shaft combined type gravity assisted heat pipe.
Wherein, the notch of the link slot 21 of described seal plug 2 outwards is equipped with an ear 213, and described ear 213 correspondences are fastened on the port of described gravity assisted heat pipe unit 1.
For improving the sealing between gravity assisted heat pipe unit and the seal plug, preferably further be sealed with the high strength fluid sealant at the port of described gravity assisted heat pipe unit 1 and link slot 21 joints of described seal plug 2.
In addition, described working medium is water, methyl alcohol, acetone or freon, make when actual job, the selection of working medium has more flexibility in the gravity assisted heat pipe unit, be to fill water in each adjacent described gravity assisted heat pipe unit, methyl alcohol, wherein a kind of working medium of acetone or freon, certainly, be not limited thereto, in use also can in each gravity assisted heat pipe unit, fill the combination of two or more working medium, to satisfy the instructions for use of different working conditions, by the synergy of each section gravity assisted heat pipe unit, reach to play better and improve the wellbore fluids temperature profile, improve the resulting fluid temperature, reduce the effect of resulting fluid viscosity.In concrete the use, also be not limited to above being limited, and for example, behind the gravity assisted heat pipe unit of every interval some, change working medium or working medium combination, the so circulation of filling ..., can reach different results of use.
Please in the lump referring to Fig. 2, Fig. 3, the producing well pit shaft combined type gravity assisted heat pipe that the utility model proposes, in the specific implementation, its bottom is fixed on the oil well pump 4 by joint, and be lowered in the lump in the oil pipe (being commonly called as pit shaft) 6 in the sleeve pipe 5 with oil well pump 4, and its upper end is connected to oil pumper 7 places (specifically referring to Fig. 1) at well head place, in use, this producing well pit shaft combined type gravity assisted heat pipe can be passed to well head with the shaft bottom heat, at this in conjunction with Fig. 2, gravity assisted heat pipe unit with least significant end is example, and heat transfer process is illustrated:
Oil well pump 4 with fluid (crude oil) suction oil pipe 6 in after, under the effect of oil pumper 7, fluid can be up along the inner chamber of oil pipe 6 (this oil recovery process is prior art, do not repeat them here), at this moment, this gravity assisted heat pipe unit with the fluid temperature (F.T.) in place, its bottom oil pipe 6 as input temp (seeing arrow L1 among Fig. 2), on the one hand, working medium in its inner chamber absorbs the heat of the fluid at this place, bottom, can reduce the wellbore fluids temperature and improve fluid viscosity, on the other hand, after the working medium heat absorption, circulating phase-change in enclosed cavity, the heat absorption back becomes gaseous state by liquid state, and heat upwards is delivered to the top output (seeing arrow L2 among Fig. 2) of enclosed cavity, outwards pass to fluid, to improve the wellbore fluids temperature at this place, top, gravity assisted heat pipe unit, reduce the fluid viscosity at this position, and this working medium of gas phase is after release heat, then form liquid phase again and flow downward along the enclosed cavity sidewall and get back to the bottom of enclosed cavity, with heat absorption again, the circulation of carrying out next time is covert, specifically moves towards referring to the arrow in the enclosed cavity among Fig. 2; Afterwards, the gravity assisted heat pipe unit of its upper level, then with the fluid temperature (F.T.) at this top, gravity assisted heat pipe unit of least significant end as input temp, make the working medium heat absorption back circulation in its enclosed cavity covert, upwards transmit heat, this process as hereinbefore, repeat no more ... so hand on, make and the transmission that can constantly make progress of the heat of wellbore bottom up to the fluid with heat transferred well head place, reach the temperature that improves resulting fluid, reduce resulting fluid viscosity, improve the purpose of wellbore fluids temperature profile.
The producing well pit shaft combined type gravity assisted heat pipe that the utility model proposes, can utilize the stratum self-energy to improve the wellbore fluids temperature profile, improve the resulting fluid temperature, reduce resulting fluid viscosity, avoid that other pit shaft companion hot mode causes energy expend, reduce inspection pump and the hot number of times of washing in a large number, simultaneously, having improved the success rate that the pit shaft gravity assisted heat pipe is used, working media arranges in pairs or groups better flexible, more be conducive to improve the resulting fluid temperature, further improve the economic benefit of oil field development.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of doing under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (5)
1. producing well pit shaft combined type gravity assisted heat pipe, it is characterized in that, described producing well pit shaft combined type gravity assisted heat pipe comprises at least two gravity heat pipe unit, described gravity assisted heat pipe unit is a continuous hollow rod, its upper/lower terminal is respectively equipped with a seal plug, so that the inner chamber of described gravity assisted heat pipe unit is an enclosed cavity, be filled with the working medium that when being heated, can form gaseous state in the described enclosed cavity, and described seal plug is concaved with a link slot towards the direction of described gravity assisted heat pipe unit center;
Wherein, link to each other by a described connector successively between each described gravity assisted heat pipe unit, to form described producing well pit shaft combined type gravity assisted heat pipe, the upper/lower terminal correspondence of described connector is embedded in the link slot of two relative between the two adjacent described gravity assisted heat pipe unit described seal plugs, and is spirally connected fixing with the sidewall of described link slot.
2. producing well pit shaft combined type gravity assisted heat pipe as claimed in claim 1, it is characterized in that, be provided with an adapter in the link slot of the seal plug of each upper end, described gravity assisted heat pipe unit, the inner of described adapter is connected with described enclosed cavity by the interface of described link slot bottom, its outer end is formed with two arms, wherein arrange one on the described arm and vacuumize control valve, another described arm is provided with a working medium and adds control valve.
3. producing well pit shaft combined type gravity assisted heat pipe as claimed in claim 1 is characterized in that the notch of the link slot of described seal plug outwards is equipped with an ear, and described ear correspondence is fastened on the port of described gravity assisted heat pipe unit.
4. as each described producing well pit shaft combined type gravity assisted heat pipe of claim 1 to 3, it is characterized in that the port of described gravity assisted heat pipe unit and the link slot joint of described seal plug further are sealed with the high strength fluid sealant.
5. producing well pit shaft combined type gravity assisted heat pipe as claimed in claim 1 is characterized in that described working medium is water, methyl alcohol, acetone or freon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220656025 CN203050661U (en) | 2012-12-03 | 2012-12-03 | Combined gravity heat pipe for well bore of oil production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220656025 CN203050661U (en) | 2012-12-03 | 2012-12-03 | Combined gravity heat pipe for well bore of oil production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050661U true CN203050661U (en) | 2013-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220656025 Expired - Fee Related CN203050661U (en) | 2012-12-03 | 2012-12-03 | Combined gravity heat pipe for well bore of oil production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015954A (en) * | 2012-12-03 | 2013-04-03 | 中国石油天然气股份有限公司 | Combined gravity heat pipe for well bore of oil production well |
| US20180224215A1 (en) * | 2014-08-25 | 2018-08-09 | Sylvan Source, Inc. | Heat capture, transfer and release for industrial applications |
-
2012
- 2012-12-03 CN CN 201220656025 patent/CN203050661U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015954A (en) * | 2012-12-03 | 2013-04-03 | 中国石油天然气股份有限公司 | Combined gravity heat pipe for well bore of oil production well |
| CN103015954B (en) * | 2012-12-03 | 2015-07-08 | 中国石油天然气股份有限公司 | Combined gravity heat pipe for well bore of oil production well |
| US20180224215A1 (en) * | 2014-08-25 | 2018-08-09 | Sylvan Source, Inc. | Heat capture, transfer and release for industrial applications |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20211203 |