CN108590539A - A kind of vacuum special thread hollow rod - Google Patents
A kind of vacuum special thread hollow rod Download PDFInfo
- Publication number
- CN108590539A CN108590539A CN201810578202.2A CN201810578202A CN108590539A CN 108590539 A CN108590539 A CN 108590539A CN 201810578202 A CN201810578202 A CN 201810578202A CN 108590539 A CN108590539 A CN 108590539A
- Authority
- CN
- China
- Prior art keywords
- end connector
- shoulder
- external
- vacuum
- rod
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 7
- 238000011065 in-situ storage Methods 0.000 description 4
- 244000273618 Sphenoclea zeylanica Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of vacuum special thread hollow rod, including male end connector, the body of rod, thermal insulation layer, inner tube, female end connector, wherein the thermal insulation layer among inner tube and the body of rod is blocked up vacuumize process by vacuum seal；Male end connector is disposed with external screw thread, external seal shoulder, female end connector is disposed with internal thread, interior sealing shoulder, before use, the external screw thread of male end connector rotates under the effect of external force with female end connector internal thread to be engaged, and external seal shoulder is come into contact with interior sealing shoulder until being interference fitted.Compared with prior art, vacuum heat-insulating layer structure is added, traditional sucker rod heat transfer effect is improved, reduces thermal losses herein, improves thickened oil recovery efficiency；Metal sealing shoulder is set further through helicitic texture is changed, to improve sealing effect in a high temperauture environment.
Description
Technical field
The present invention relates to petroleum drilling and mining technical field, more particularly to a kind of vacuum special thread hollow rod.
Background technology
Heavy crude reservoir thermal recovery technology includes mainly steam soak, steam drive, clump formula directional well and horizontal well, combustion in situ
And mating other technologies etc. with heavy crude heat extraction.The difficult point of combustion in situ is that implementing process difficulty is big, is difficult to control ground
Lower burning, while the cost of high pressure injection large quantity of air is again sufficiently expensive.And the chemical agent that chemical viscosity reduction method is added is at certain
Stratum is caused seriously to pollute in degree.
Both at home and abroad viscous crude and high solidifying oil exploitation are generally required to use hollow rod at present.Traditional hollow rod
Injected into oil well by the central duct of the body of rod heat carrier (deep fat, hot water, hot gas), chemical agent or tripping in electric cable heating with
It is molten cured to reach viscosity reduction, to improve crude oil fluidity, improves production efficiency.Due to hollow rod in oil well constantly it is upper,
Crude oil in well is sent to ground by lower movement, but during heavy crude producing heat carrier (deep fat, hot water, hot gas) by hollow
Sucker rod necessarily will produce thermal loss, how reduce thermal losses herein, improves thickened oil recovery efficiency, makes full use of underground
The energy is current industry development urgent problem to be solved.
In addition, most hollow rods in oil field using rubber seal come be tightly connected place, rubber seal it is resistance to
Warm nature is poor, is usually no more than 180 DEG C, is used in steam-stimulated well, vulnerable, causes well liquid to enter hollow stem, to cable
It damages.In addition have small part hollow stem using copper backing to be sealed, but hollow stem in well due to stretching action
It is poorly sealed to also result in copper backing.Also there is a kind of 201610850141.1 hollow rod elevated-temperature seal attachment device of the patent No.
And connection method, addition compensation sealing part is used, theoretically plays sealing effect, but sealing element needs assembled in situ, and non-
Metal seal assembled in situ environmental requirement is higher, and it is otherwise vulnerable cannot to be mixed into any rigid foreign matter, such as sand etc.；It is this
It is required that it is unfavorable for execute-in-place, and most of well site environment also can not meet its requirement at all, the practicality is very poor, is unfavorable for pushing away
It is wide to use.
Invention content
The object of the present invention is to provide a kind of vacuum special thread hollow rods, and vacuum heat-insulating layer structure is arranged, and improve
Heat insulation reduces thermal losses, to improve thickened oil recovery efficiency；Metal is set further through change helicitic texture simultaneously
Sealing shoulder, to improve sealing effect in a high temperauture environment.
To achieve the purpose of the present invention, the present invention provides a kind of vacuum special thread hollow rods, including male end to connect
Head, the body of rod and thermal insulation layer, inner tube, female end connector, wherein the thermal insulation layer among inner tube and the body of rod is blocked up by vacuum seal to be vacuumized
Processing；Male end connector is disposed with external screw thread, external seal shoulder, and female end connector is disposed with internal thread, interior sealing shoulder,
Before use, the external screw thread of male end connector is rotated with female end connector internal thread and is engaged under the effect of external force, external seal shoulder with
Interior sealing shoulder comes into contact with until interference fit.
Wherein, inner tube material is stainless steel.
Wherein, the external diameter of rod body D=32-42mm of sucker rod main body, wall thickness t=5-6.5mm.
Wherein, the tooth of external screw thread 1 and internal thread 8 is high, screw pitch difference is equal.
Wherein, 3 angle b of external seal shoulder is equal with 10 angle a of interior sealing shoulder, and a=b=15 ± 0.25 degree.
Compared with prior art, beneficial effects of the present invention are to add vacuum heat-insulating layer structure, improve traditional oil pumping
Bar heat transfer effect reduces thermal losses herein, improves thickened oil recovery efficiency；, further through helicitic texture is changed, metal is set
Sealing shoulder to improve sealing effect in a high temperauture environment, while increasing one layer of inner tube, and the connection for improving sucker rod is strong
Degree and product non-deformability, greatly enhance heat insulation while extending service life.
Description of the drawings
Fig. 1 show the structural schematic diagram of the present invention；
Fig. 2 show external seal shoulder structural schematic diagram of the present invention；
Fig. 3 show the interior sealing shoulder structural schematic diagram of the present invention；
In figure：1- external screw threads, 2- male end connectors, 3- external seal shoulders, 4- thermal insulation layers, the 5- bodies of rod, 6- inner tubes, 7- vacuum seals
It blocks up, 8- internal threads, 9- female end connectors, 10- interior sealing shoulders, D- external diameter of rod bodies, t=wall thickness, a- external seal shoulder angles, in b-
Sealing shoulder angle.
Specific implementation mode
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
It should be noted that " connection " described herein and the word for expressing " connection ", as " being connected ",
" connected " etc. was both directly connected to another component including a certain component, and also passed through other component and another portion including a certain component
Part is connected.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As shown in Figure 1-Figure 3, this application provides a kind of vacuum special thread hollow rods, including male end connector 2, bar
Body 5 and thermal insulation layer 4, inner tube 6, female end connector 9, wherein inner tube 6 blocks 7 mouthfuls of pumpings with the thermal insulation layer 4 among the body of rod 5 by vacuum
It is vacuum-treated；Male end connector 2 is disposed with external screw thread 1, external seal shoulder 3, and female end connector 9 is disposed with internal thread 8, interior
Sealing shoulder 10, before use, the external screw thread 1 of male end connector 2 is rotated with 9 internal thread 8 of female end connector and nibbled under the effect of external force
It closes, external seal shoulder 3 is come into contact with interior sealing shoulder 10 until being interference fitted.
Preferably, 1 material of inner tube is stainless steel.
Preferably, the external diameter of rod body D=32-42mm of sucker rod main body 2, wall thickness t=5-6.5mm.
Preferably, the tooth of external screw thread 1 and internal thread 8 is high, screw pitch difference is equal.
Preferably, 3 angle b of external seal shoulder is equal with 10 angle a of interior sealing shoulder, and a=b=15 ± 0.25 degree.
The present invention adds vacuum heat-insulating layer structure, improves traditional sucker rod heat transfer effect, reduces heat herein
Loss improves thickened oil recovery efficiency；, metal sealing shoulder is set further through helicitic texture is changed, to improve under high temperature environment
Sealing effect, while increasing one layer of inner tube, improve the bonding strength and product non-deformability of sucker rod, greatly enhance
Heat insulation extends service life simultaneously.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of vacuum special thread hollow rod, which is characterized in that including male end connector (2), the body of rod (5) and thermal insulation layer
(4), inner tube (6), female end connector (9), wherein inner tube (6) thermal insulation layer (4) intermediate with the body of rod (5) blocks (7) mouth by vacuum
Vacuumize process；Male end connector (2) is disposed with external screw thread (1), external seal shoulder (3), and female end connector (9) is disposed with
Internal thread (8), interior sealing shoulder (10), before use, male end connector (2) external screw thread (1) and female end connector (9) internal thread
(8) rotation engagement under the effect of external force, external seal shoulder (3) are come into contact with interior sealing shoulder (10) until being interference fitted.
2. a kind of vacuum special thread hollow rod according to claim 1, which is characterized in that inner tube (1) material is
Stainless steel.
3. a kind of vacuum special thread hollow rod according to claim 1, which is characterized in that sucker rod main body (2)
External diameter of rod body (D)=32-42mm, wall thickness (t)=5-6.5mm.
4. a kind of vacuum special thread hollow rod according to claim 1, which is characterized in that external screw thread (1) and interior
The tooth of screw thread (8) is high, screw pitch difference is equal.
5. a kind of vacuum special thread hollow rod according to claim 1, which is characterized in that external seal shoulder (3)
Angle (b) is equal with interior sealing shoulder (10) angle (a), and (a)=(b)=15 ± 0.25 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810578202.2A CN108590539A (en) | 2018-06-07 | 2018-06-07 | A kind of vacuum special thread hollow rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810578202.2A CN108590539A (en) | 2018-06-07 | 2018-06-07 | A kind of vacuum special thread hollow rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108590539A true CN108590539A (en) | 2018-09-28 |
Family
ID=63627551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810578202.2A Pending CN108590539A (en) | 2018-06-07 | 2018-06-07 | A kind of vacuum special thread hollow rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027350A (en) * | 2021-05-10 | 2021-06-25 | 中海油能源发展股份有限公司工程技术分公司 | Heat-point-free heat insulation oil pipe column structure |
-
2018
- 2018-06-07 CN CN201810578202.2A patent/CN108590539A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027350A (en) * | 2021-05-10 | 2021-06-25 | 中海油能源发展股份有限公司工程技术分公司 | Heat-point-free heat insulation oil pipe column structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180928 |
|
| WD01 | Invention patent application deemed withdrawn after publication |