CN210509068U - Continuous hollow rod for extracting terrestrial heat - Google Patents
Continuous hollow rod for extracting terrestrial heat Download PDFInfo
- Publication number
- CN210509068U CN210509068U CN201921383359.6U CN201921383359U CN210509068U CN 210509068 U CN210509068 U CN 210509068U CN 201921383359 U CN201921383359 U CN 201921383359U CN 210509068 U CN210509068 U CN 210509068U
- Authority
- CN
- China
- Prior art keywords
- rod
- hole
- joint
- hollow rod
- hollow
- 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
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 4
- 239000001993 wax Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A continuous hollow rod for extracting terrestrial heat is characterized in that the lower end of an upper joint is connected with the upper end of a hollow rod body, the joint keeps sealed, the lower end of the hollow rod body is connected with the upper end of a lower joint, the joint keeps sealed, the lower end of the hollow rod body is sealed after being connected with the upper end of the lower joint, the lower part of the lower joint is provided with a lower connecting thread, a through hole is formed in the hollow rod body, the upper part of the upper joint is provided with an upper connecting thread, the upper joint is provided with an injection hole, the injection hole is communicated with the through hole, after working media are injected into the through hole through the injection hole and are vacuumized, the injection hole is sealed by a plugging mechanism, the working media in the through hole cannot leak outwards, the length of the hollow rod body is more than 800m, the outer diameter of the upper joint is equal to or less than the outer diameter of the hollow rod body, the well temperature above the bottom, and heating the well fluid above the wax precipitation point to enable the well fluid temperature to be higher than the wax precipitation temperature, so as to prevent wax from being separated out.
Description
Technical Field
The utility model belongs to an instrument that oil field oil pumping well was used is the sucker rod that prevents the wax precipitation of pumping well, specifically is a continuous hollow rod that draws geothermol power.
Background
In the process of oil field development, oil well hot washing and paraffin removal are daily management and maintenance work, because the wax deposition points of oil wells are higher, normal paraffin removal operation is usually to carry out hot washing on all well sections, the hot washing well sections are long, heat loss is large, the hot washing liquid amount is large, the working time is long, the well washing effect is poor, the well washing liquid is easy to leak and lose to pollute an oil layer, the yield of the oil well is reduced, normal production can be recovered only by carrying out blockage removal measures seriously, and the waste of manpower, material resources and financial resources is caused.
In light of the problems, the technical personnel develop the superconductive heat-transfer wax-removal and prevention sucker rod for wax well wax prevention. For example, in the Chinese patent application 201110254428.5 geothermal superconducting heat transfer wax-removing and-preventing sucker rod, the wax-preventing sucker rod has a double-layer vacuum cavity, two ends of the double-layer vacuum cavity are communicated, after 100 sucker rods are put into a well, a superconducting injection body is filled into the cavity of the sucker rod which is put into the well from the well mouth, and the top end of the sucker rod is sealed after the finished product is filled. The work is carried out on site, the implementation is difficult, the quality requirement cannot be met necessarily, and the heating effect is poor; another problem with this technique is that the connection of the upper 100 rods needs to be sealed, and if one connection thread is lost, the entire rod string is filled with well fluid and loses its heat transfer function.
Disclosure of Invention
The utility model aims at providing an extract geothermal continuous hollow rod, lower in the wax precipitation section of pumping well, prevent that wax from appearing to well fluid heating to can overcome the problem that the above-mentioned exists, use manpower sparingly, material resources, avoid polluting the oil reservoir.
The purpose of the utility model is realized like this: including top connection, the hollow body of rod, lower clutch, the lower extreme of top connection is connected with the upper end of the hollow body of rod, and the junction keeps sealed, and the lower extreme of the hollow body of rod is connected with the upper end of lower clutch, and the junction keeps sealed, makes the lower extreme of the hollow body of rod closed after the lower extreme of the hollow body of rod is connected with the upper end of lower clutch, and there is the through-hole in the inside of the hollow body of rod, and the upper portion of top connection has last connecting thread, has the filling hole on the top connection, the filling hole with the through-hole communicate with each other, the warp the filling hole to the through-hole in pour into working medium and take out into the vacuum after, the filling hole sealed by shutoff mechanism, make through-hole 4 in the working medium on the space remain vacuum state all the time, the.
The plugging mechanism comprises a plug and a filling sealing body, wherein the filling sealing body is positioned at the inner end of the filling hole, the plug is in threaded connection with the upper part of the upper joint, and the filling sealing body is pressed in the filling hole.
The utility model has the advantages that: the utility model discloses pump into the vacuum after pouring into working medium through the through-hole, make it the utility model discloses become the gravity heat pipe, according to heat pipe principle heat transfer mechanism, can draw the well temperature above the hollow body of rod bottom and heat the vaporization with working medium, because the length of the hollow body of rod is greater than 800m, can heat the well liquid on the wax deposition point, make its well liquid temperature be higher than the wax deposition temperature, prevent that wax from appearing, play the paraffin control effect, the utility model discloses not external heating source, the input is few, the utility model discloses at indoor production, can guarantee processingquality, can reliably use for a long time, compare with prior art, have with low costs, of high quality, non-staining stratum, implement convenient, excellent in use effect's advantage.
Drawings
Fig. 1 is an assembly view of an embodiment of the present invention.
Detailed Description
An embodiment of the present invention will be described below with reference to fig. 1.
As shown in figure 1, the embodiment of the utility model comprises an upper joint 3, a hollow rod 5 and a lower joint 6, wherein the lower end of the upper joint 3 is connected with the upper end of the hollow rod 5, the joint keeps sealed, the lower end of the hollow rod 5 is connected with the upper end of the lower joint 6, the joint keeps sealed, the lower end of the hollow rod 5 is sealed after being connected with the upper end of the lower joint 6, the lower part of the lower joint 6 is provided with a lower connecting thread 6-1, the hollow rod 5 is internally provided with a through hole 4, the upper part of the upper joint 3 is provided with an upper connecting thread 3-1, the upper joint 3 is provided with an injection hole 3-2, the injection hole 3-2 is communicated with the through hole 4, after working media are injected into the through hole 4 through the injection hole 3-2 and vacuumized (the working media are 15-25% of the volume of the through hole 4, the working media are positioned at the lower part, the rest volume of the through hole 4 is vacuumized), the filling hole 3-2 is sealed by a plugging mechanism, so that the space above the working medium in the through hole 4 is always kept in a vacuum state, the hollow rod body is an integral continuous rod, the length of the hollow rod body is more than 800m, the hollow rod body is a continuous hollow sucker rod, and the outer diameter of the upper joint 3 is equal to or less than the outer diameter of the hollow rod body 5.
The plugging mechanism comprises a plug 1 and a filling sealing body 2, wherein the filling sealing body 2 is positioned at the inner end of the filling hole 3-2, the plug 1 is in threaded connection with the upper part of the upper connector 3, and the filling sealing body 2 is pressed in the filling hole 3-2, so that the space above the working medium in the through hole 4 can be always kept in a vacuum state.
The upper connecting thread 3-1 on the upper part of the upper joint 3 is used for hanging the weight or the lifting pole of the utility model. The upper connecting thread 3-1 is arranged to ensure that the utility model can be applied to paraffin removal of the self-blowing oil production well. The lower connecting thread 6-1 at the lower part of the lower joint 6 is used for connecting a sucker rod or an oil pump piston. For example, the lower part of the lower joint 6 of the self-blowing well can be provided with no connecting thread 6-1. The utility model is used for when pumping well, play the effect of sucker rod.
The utility model provides a hollow body of rod 5's length is greater than 800m, for hollow pole (the centre does not have the joint) in succession. The utility model discloses an use and also make continuous hollow sucker rod obtain more extensive use in the oil recovery of oil field.
The utility model discloses utilize the heat pipe principle, through well temperature with working medium heating vaporization, pass to the whole root hollow body of rod with the formation temperature rapidly, emit the heat through the pipe wall of the body of rod, heating well liquid makes well liquid temperature be higher than the wax deposition temperature.
The connection of the upper joint 3, the hollow rod body 5 and the lower joint 6 is generally friction welding.
The reason that the outer diameter of the upper joint 3 is equal to or less than that of the hollow rod body 5 is to smoothly pass through the wellhead sealer. If the utility model is used for the flowing well, the well head does not adorn the sealer, and the external diameter of top connection 3 can be greater than the external diameter of the hollow body of rod 5.
Since the wax deposition point of the oil well is generally above 800m in the well, the length of the hollow rod body 5 is greater than 800m, and is generally designed to be 1000m to 1600 m.
The working medium in the utility model refers to the medium in the heat pipe technology, and the description about the working medium can be found in the book of the heat pipe heat exchanger energy saving and emission reduction technology (published by the chemical industry publishing company in 5 months 2015).
Claims (4)
1. The utility model provides an extract geothermal continuous hollow pole, including top connection (3), the hollow body of rod (5), lower clutch (6), the lower extreme of top connection (3) is connected with the upper end of the hollow body of rod (5), the junction keeps sealed, the lower extreme of the hollow body of rod (5) is connected with the upper end of lower clutch (6), the junction keeps sealed, the lower extreme that makes the hollow body of rod (5) after the lower extreme of the hollow body of rod (5) is connected with the upper end of lower clutch (6) is sealed, there is through-hole (4) inside of the hollow body of rod (5), there is connecting thread (3-1) on the upper portion of top connection (3), characterized by: an injection hole (3-2) is formed in the upper connector (3), the injection hole (3-2) is communicated with the through hole (4), working medium is injected into the through hole (4) through the injection hole (3-2) and is vacuumized, the injection hole (3-2) is sealed by a plugging mechanism, so that the space above the working medium in the through hole (4) is kept in a vacuum state all the time, and the hollow rod body (5) is a continuous rod and is longer than 800 m.
2. A continuous hollow rod for geothermal extraction as claimed in claim 1 wherein: the plugging mechanism comprises a plug (1) and a filling sealing body (2), wherein the filling sealing body (2) is arranged at the inner end of the filling hole (3-2), the plug (1) is in threaded connection with the upper part of the upper connector (3), and the filling sealing body (2) is pressed in the filling hole (3-2).
3. A continuous hollow rod for geothermal extraction as claimed in claim 2 wherein: the lower part of the lower joint (6) is provided with a lower connecting thread (6-1).
4. A continuous hollow rod for geothermal extraction as claimed in claim 2 wherein: the outer diameter of the upper joint (3) is equal to or less than that of the hollow rod body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383359.6U CN210509068U (en) | 2019-08-23 | 2019-08-23 | Continuous hollow rod for extracting terrestrial heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383359.6U CN210509068U (en) | 2019-08-23 | 2019-08-23 | Continuous hollow rod for extracting terrestrial heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210509068U true CN210509068U (en) | 2020-05-12 |
Family
ID=70591487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921383359.6U Expired - Fee Related CN210509068U (en) | 2019-08-23 | 2019-08-23 | Continuous hollow rod for extracting terrestrial heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210509068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388184A (en) * | 2019-08-23 | 2019-10-29 | 张红卫 | A kind of continuous hollow stem extracting underground heat |
-
2019
- 2019-08-23 CN CN201921383359.6U patent/CN210509068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388184A (en) * | 2019-08-23 | 2019-10-29 | 张红卫 | A kind of continuous hollow stem extracting underground heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201050318Y (en) | Loose ground closed core-picking tool | |
| CN208330322U (en) | Thick oil thermal recovery tubular column | |
| CN204941480U (en) | The horizontal well completion sleeve pipe of segmentation exploitation and the tubing string of formation thereof can be realized | |
| CN210509068U (en) | Continuous hollow rod for extracting terrestrial heat | |
| CN104612944B (en) | A kind of thick oil pump | |
| CN104033141B (en) | The heat insulation steam injection technology tubing string of deep-layer heavy crude segmentation | |
| CN204344428U (en) | A kind of thick oil pump | |
| CN210152626U (en) | Oil pumping device for extracting geothermal energy | |
| CN201915930U (en) | Tee joint special for thermal recovery | |
| CN201090203Y (en) | Thick oil thermal recovery pit shaft heater | |
| CN201206437Y (en) | Double-layer tubing coupling | |
| CN106761625A (en) | Underground thermal-arrest temperature-control energy-saving completion integral tubing string and technique | |
| CN208934609U (en) | Extract underground heat hollow rod | |
| CN103161428A (en) | Method for improving oil temperature at outlet of oil well and oil well structure | |
| CN204716209U (en) | Vacuum type fluid power pumping positive displacement pump | |
| CN206016756U (en) | A kind of down-hole plugging device of sleeve pipe snubbing serving method | |
| CN207296951U (en) | A kind of setting tool | |
| CN201794557U (en) | Ultrasonic atomization drainer for gas well | |
| CN203925456U (en) | The heat insulation steam injection technology tubing string of deep-layer heavy crude segmentation | |
| CN201443331U (en) | Multi-functional well head and christmas tree | |
| CN201059165Y (en) | Hollow pole antiwear coupling | |
| CN110388184A (en) | A kind of continuous hollow stem extracting underground heat | |
| CN205577922U (en) | Can force recovery type deep water sleeve pipe cutting means | |
| CN208518613U (en) | A kind of vacuum hollow rod | |
| CN203145849U (en) | Oil well structure for improving oil temperature at oil well outlet based on heat pipe principle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200512 |