CN109854208A - A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop - Google Patents
A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop Download PDFInfo
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- CN109854208A CN109854208A CN201910113657.1A CN201910113657A CN109854208A CN 109854208 A CN109854208 A CN 109854208A CN 201910113657 A CN201910113657 A CN 201910113657A CN 109854208 A CN109854208 A CN 109854208A
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- hot water
- heavy oil
- closed cycle
- oil wells
- insulating tube
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Abstract
The present invention discloses a kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop, it is related to oil extraction in oil field instrument field, including top connection, body and lower contact, glutinous device insulating tube drops in arbitrarily two adjacent heavy oil wells hot water closed cycle heating when use, the lower contact that the top connection that glutinous device insulating tube drops in one of heavy oil wells hot water closed cycle heating can heat the glutinous device insulating tube of drop with another heavy oil wells hot water closed cycle is threadedly coupled, it is arranged such, glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating can repair replacement, it is at low cost, it loses small, and it is less likely to be damaged during going into the well, card slot is provided in top connection, by making lifting device block card slot, it can be by device tripping in oil well, heavy oil wells hot water closed cycle heating is dropped glutinous device and is not needed with insulating tube using under dedicated Well equipment, and common staff can be operated, cost of use is low, goes into the well conveniently.
Description
Technical field
The present invention relates to oil extraction in oil field instrument fields, more particularly to a kind of glutinous dress of heavy oil wells hot water closed cycle heating drop
It sets and uses insulating tube.
Background technique
Oil field uses heating in crude oil extraction on thick well and drops glutinous technology, and glutinous technology drops in existing heating, and there are many skills
Art, one of them technology are that the connecting rod of oil pump piston and pumping unit is made of hollow stem, and the outer diameter of hollow stem is generally Φ 42,
Internal diameter is Φ 31, and tripping in outer diameter is the continuous pipe of Φ 25 again in hollow stem, and the length of continuous pipe is hundreds of meters to thousands of rice, will
Hot water (or steam) is squeezed into out of continuous pipe, and the circular passage continuously managed between hollow stem is returned out, transfers heat to sky
Viscous crude outside core bar keeps its heating drop glutinous, increases mobility.Due to having hundreds of meters to thousands of rice, hot water (or steams continuous pipe
Vapour) it begins to transmit heat on continuous pipe top, temperature has declined much when reaching continuous pipe lower part, therefore, currently used
The technology of this heating viscous crude can only heat the viscous crude on tubing string top, and heating effect is bad, influences the exploitation of heavy oil wells.
For this purpose, technical staff has developed, application No. is a kind of heavy oil wells hot water closed cycles of CN2016107220694 to add
Heat drop sticks device, and it is poor which efficiently solves the problems, such as that glutinous technology heating effect drops in existing heating.But the company in the device
Continuous pipe is insulating tube, and length belongs to minor diameter thin wall and continuously manage up to 1000m or so, needs special equipment (as applied when going into the well
It number is 2018106096966, documented setting in the Chinese patent of entitled " minor diameter thin wall injection device for coiled tubing ") and
Trained technical staff operates G.I.H that could be safe, and performance difficulty, cost of use is high, and due to minor diameter thin wall
The continuous continuous pipe of pipe is excessively elongated, is extremely easily damaged during going into the well, damages at one once having, and whole continuous pipe is scrapped,
It loses huge.
Therefore it provides one kind enters, well is convenient, and cost of use is low, and loss is small, and enters non-damageable heavy oil wells during well
It is current urgent problem to be solved that the heating of hot water closed cycle, which drops glutinous device with insulating tube,.
Summary of the invention
The object of the present invention is to provide a kind of heating of heavy oil wells hot water closed cycle to drop glutinous device insulating tube, on solving
Problem of the existing technology is stated, heavy oil wells hot water closed cycle heating drops glutinous device insulating tube and enters well conveniently, usage charges
It with low, loses small, and enters and be hardly damaged during well.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop, including top connection, tube body
Component and lower contact, the top connection and the lower contact are respectively arranged at the both ends of the body, and with the pipe
The connection of body component, glutinous device insulating tubes drop in any two adjacent heavy oil wells hot water closed cycles heating when use,
In a heavy oil wells hot water closed cycle heating drop glutinous device insulating tube the top connection can with described in another
The lower contact that glutinous device insulating tube drops in the heating of heavy oil wells hot water closed cycle is threadedly coupled, and the institute that any two are adjacent
State the heating of heavy oil wells hot water closed cycle and drop glutinous device insulating tube and be connected to by the top connection with the lower contact, it is described on
It is provided with card slot on connector, by making lifting device block the card slot, the heavy oil wells hot water closed cycle can be heated
Glutinous device insulating tube tripping in oil well drops.
Preferably, glutinous device insulating tube drops in the adjacent heavy oil wells hot water closed cycle heating of any two, wherein
One heavy oil wells hot water closed cycle heating drop glutinous device insulating tube the top connection can with it is thick described in another
The lower contact that glutinous device insulating tube drops in the heating of oil well hot water closed cycle is connected using trapezoidal thread.
Preferably, the nominal diameter of the trapezoidal thread is 21mm, screw pitch 3mm, depth of threat 0.9mm.
Preferably, the body includes inner tube, insulating layer and the exterior protection pipe that successively nesting is arranged from the inside to the outside,
The inside of the top connection and the lower contact is inserted at the both ends of said inner tube respectively, and with the top connection and the lower contact
It is fixedly connected, one end of the exterior protection pipe is against on the end face of the lower contact, another end cap of the exterior protection pipe
On the outer wall of the top connection, the both ends of the insulating layer are each provided with one first sealing ring, and first sealing ring is used
In prevent well liquid enter the insulating layer.
Preferably, the insulating layer includes fine-celled foam thermal insulation layer and is wrapped in outside the fine-celled foam thermal insulation layer
High-density thermal insulation layer.
Preferably, it is additionally provided on the outer wall of the top connection for limiting the exterior protection pipe along the top connection
First limited step of axis direction movement, and first limited step and the outer wall of the top connection use tapered surface mistake
It crosses.
Preferably, the top connection close to said inner tube one end internal diameter be equal to said inner tube outer diameter, and it is described on connect
The internal diameter of the nearly said inner tube one end of head rest is greater than the internal diameter of the one end of the top connection far from said inner tube, and the lower contact is close
The internal diameter of said inner tube one end is equal to the outer diameter of said inner tube, and internal diameter of the lower contact close to said inner tube one end is greater than institute
State the internal diameter of the one end of lower contact far from said inner tube.
Preferably, the inner wall of the top connection includes stepped set gradually of axis direction along the top connection
Single order bench, second-order bench and third ladder section, and the one end of the inner wall of the top connection far from the body is the
Single order bench, the size of the first ladder section are greater than the size of the third ladder section, when use arbitrarily two adjacent institutes
It states the heating of heavy oil wells hot water closed cycle and drops glutinous device insulating tube, one of them described heavy oil wells hot water closed cycle heating drop
One end of the lower contact of glutinous device insulating tube can extend into the second-order bench and with the second-order bench screw thread
Connection.
Preferably, the axis direction on the outer wall of the lower contact along the lower contact is provided with several annular grooves, each institute
State and be mounted on the second sealing ring in annular groove, second sealing ring be used for seal the lower contact outer wall and first rank
Gap between bench.
Preferably, it is provided with the card slot in the lower contact, the second limited step is provided in the lower contact, it is described
Second limited step is used to limit the axial movement of the lower contact.
The present invention achieves following technical effect compared with the existing technology:
Glutinous device insulating tube, including top connection, body drop in oil well hot water closed cycle heating provided by the invention
And lower contact, top connection and lower contact are respectively arranged at the both ends of body, and are connected to body, and when use is any
Glutinous device insulating tube drops in two adjacent heavy oil wells hot water closed cycle heating, and one of heavy oil wells hot water closed cycle adds
The top connection that heat drop sticks device insulating tube can be heated with another heavy oil wells hot water closed cycle drops glutinous device insulating tube
Lower contact be threadedly coupled, so set, glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating can repair more
It changes, at low cost, loss is small, and is less likely to be damaged during going into the well；Card slot is provided in top connection, by blocking lifting device
The oil well hot water closed cycle can be heated and drop glutinous device insulating tube tripping in oil well by card slot, which follows
Ring heating is dropped glutinous device and is not needed with insulating tube using dedicated equipment of going into the well, and common staff can be operated, cost of use
It is low, it goes into the well conveniently.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram that glutinous device insulating tube drops in oil well hot water closed cycle provided by the invention heating.
In Fig. 1:
1- top connection, 2- trapezoidal thread, 3- card slot, the first limited step of 4-, 5- tapered surface, 6- inner tube, 7- first are sealed
Circle, 8- insulating layer, 9- exterior protection pipe, 10- lower contact, 11- annular groove, the first ladder of 12- section, 13- second-order bench, 14-
Three ladder sections, the second limited step of 15-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of heating of heavy oil wells hot water closed cycle to drop glutinous device insulating tube, existing to solve
The problem of with the presence of technology, heavy oil wells hot water closed cycle heating drop glutinous device insulating tube and enter well conveniently, and cost of use is low,
It loses small, and enters and be hardly damaged during well.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, the present embodiment provides a kind of heating of heavy oil wells hot water closed cycle to drop glutinous device insulating tube, including
Top connection 1, body and lower contact 10, top connection 1 and lower contact 10 are respectively arranged at the both ends of body, and with pipe
The connection of body component, glutinous device insulating tube drops in arbitrarily two adjacent heavy oil wells hot water closed cycle heating when use, wherein one
The top connection 1 that glutinous device insulating tube drops in a heavy oil wells hot water closed cycle heating can be followed with another heavy oil wells hot water enclosed
The lower contact 10 that glutinous device insulating tube drops in ring heating is threadedly coupled, and the adjacent heavy oil wells hot water closed cycle of any two adds
Heat drop sticks device and is connected to by top connection 1 with lower contact 10 with insulating tube, so set, the heavy oil wells hot water closed cycle heats
Replacement can be repaired by dropping glutinous device insulating tube, and at low cost, loss is small, and is less likely to be damaged during going into the well；It is set in top connection 1
It is equipped with card slot 3, by making lifting device block card slot 3, heavy oil wells hot water closed cycle can be heated and drop glutinous device heat preservation
Pipe tripping in oil well, heavy oil wells hot water closed cycle heating are dropped glutinous device and are not needed with insulating tube using dedicated equipment of going into the well, and
Common staff can be operated, and cost of use is low, go into the well conveniently, and heavy oil wells hot water closed cycle heating is dropped glutinous device and protected
Warm pipe, which reduces, implements difficulty and expense that glutinous technology drops in the heating of heavy oil wells hot water closed cycle, increases lower heavy oil wells hot water and closes
The quality of going into the well of glutinous device drops in formula circulating-heating, and the glutinous success rate of heavy oil wells hot water closed cycle heating drop is high, has significant pass through
Ji benefit.
In another specific embodiment of the present invention, glutinous device drops in the adjacent heavy oil wells hot water closed cycle heating of any two
With insulating tube, the top connection 1 that glutinous device insulating tube drops in one of heavy oil wells hot water closed cycle heating can be with another
The lower contact 10 that glutinous device insulating tube drops in the heating of heavy oil wells hot water closed cycle is connected using trapezoidal thread 2, it is preferable that trapezoidal
The nominal diameter of screw thread 2 is 21mm, screw pitch 3mm, depth of threat 0.9mm, so set, the heavy oil wells hot water closed cycle heats
Dropping glutinous device can be loaded and unloaded easily and fast with insulating tube.
In another specific embodiment of the present invention, body includes the inner tube 6 that successively nesting is arranged from the inside to the outside, heat preservation
Layer 8 and exterior protection pipe 9, it is preferable that the outer diameter of top connection 1 and lower contact 10 is φ 23- φ 26mm, top connection 1, lower contact
10 and the internal diameter of inner tube 6 be φ 17- φ 20mm, the inside of top connection 1 and lower contact 10 is inserted at the both ends of inner tube 6 respectively, and
It is fixedly connected with top connection 1 and lower contact 10, it is preferable that the both ends of inner tube 6 connect with top connection 1 and the welding of lower contact 10 respectively
It connects, one end of exterior protection pipe 9 is against on the end face of lower contact 10, and the other end of exterior protection pipe 9 is sheathed on the outer of top connection 1
On wall, by setting exterior protection pipe 9, colliding with for insulating layer 8 is effectively prevented, the expansion drop after being heated, and effectively isolation
Corrosion of the various chemical components in underground to insulating layer 8 and inner tube 6；When inner tube 6 and lower contact 10 are welded, by exterior protection pipe 9
Along the outer tube protecting tube axis direction and be directed away from the lower contact 10 direction slide, inner tube 6 weld after the completion of, will
Exterior protection pipe 9 sets back and is welded to connect with top connection 1 and lower contact 10,6 convenient welding of inner tube.
In another specific embodiment of the present invention, the both ends of insulating layer 8 are each provided with one first sealing ring 7, the first sealing
Circle 7 is for preventing well liquid from entering insulating layer 8, it is preferable that the first sealing ring 7 is high temperature resistant, wear-resistant and corrosion resistant O-shaped sealing
Circle substantially prolongs the service life of insulating layer 8 by the way that the first sealing ring 7 is arranged.
In another specific embodiment of the present invention, insulating layer 8 is including fine-celled foam thermal insulation layer and is wrapped in fine-celled foam
High-density thermal insulation layer outside thermal insulation layer, so set, 8 heat insulation effect of insulating layer is good.
In another specific embodiment of the present invention, it is additionally provided on the outer wall of top connection 1 for limiting 9 edge of exterior protection pipe
First limited step 4 of the axis direction movement of top connection 1, and the first limited step 4 and the outer wall of top connection 1 use tapered surface
5 transition.
In another specific embodiment of the present invention, the inner wall of top connection 1 include along top connection 1 axis direction it is stepped
The first ladder section 12, second-order bench 13 and the third ladder section 14 set gradually, and the inner wall of top connection 1 is far from body
One end be the first ladder section 12, the size of the first ladder section 12 is greater than the size of third ladder section 14, any two when use
Glutinous device insulating tube, one of heavy oil wells hot water closed cycle heating drop drop in adjacent heavy oil wells hot water closed cycle heating
One end of the lower contact 10 of glutinous device insulating tube can extend into second-order bench 13 and be threadedly coupled with second-order bench 13.
In another specific embodiment of the present invention, top connection 1 is equal to the outer diameter of inner tube 6 close to the internal diameter of 6 one end of inner tube, and
Top connection 1 is greater than the internal diameter of the one end of top connection 1 far from inner tube 6 close to the internal diameter of 6 one end of inner tube, it is preferable that third ladder section
14 are equal to the outer diameter of inner tube 6 close to the internal diameter of 6 one end of inner tube, and internal diameter of the third ladder section 14 close to 6 one end of inner tube is greater than the
The internal diameter of three one end of ladder section 14 far from inner tube 6, lower contact 10 are equal to the outer diameter of inner tube 6 close to the internal diameter of 6 one end of inner tube, and
Lower contact 10 is greater than the internal diameter of the one end of lower contact 10 far from inner tube 6 close to the internal diameter of 6 one end of inner tube, so set, effectively limit
The circumferential direction for having made inner tube 6 is mobile, and device sealing is tighter, and stability is more preferable.
In another specific embodiment of the present invention, if the axis direction on the outer wall of lower contact 10 along lower contact 10 is provided with
Dry annular groove 11, it is preferable that the quantity of annular groove 11 is two, is mounted on the second sealing ring, the second sealing ring in each annular groove 11
For sealing the gap between the outer wall of lower contact 10 and the first ladder section 12, it is preferable that the second sealing ring is high temperature resistant, wear-resistant
And corrosion resistant O-ring seal, by the way that the second sealing ring, two adjacent glutinous dresses of heavy oil wells hot water closed cycle heating drop are arranged
It sets with better tightness between insulating tube, it is not easy to leak.
In another specific embodiment of the present invention, it is provided with card slot 3 in lower contact 10, in top connection 1 and lower contact 10
It is provided with card slot 3, device dismounting is more convenient.
In another specific embodiment of the present invention, the second limited step 15, the second limited step are provided in lower contact 10
15 for limiting the axial movement of lower contact 10.
In addition, inner tube 6 is continuous pipe, and up to km, inner tube 6 carries out continuously coating heat preservation in equipment length when processing
Inner tube 6, is then cut into the length for being suitble to be gone into the well with the operation shelf on well site by layer 8, and generally 8m after cutting into 8m, is protected
Warm layer 8 is all standing in 6 surface of inner tube, then cuts off the insulating layer 8 of 6 top and bottom of inner tube, in order to inner tube 6 with it is upper
Not by high temperature when connector 1, lower contact 10 are welded.
In the specific use process, determine that heavy oil wells hot water closed cycle heating is dropped glutinous device and used according to the height of oil well
The quantity of insulating tube then blocks the card slot 3 in top connection 1 using lifting device, by heavy oil wells heat as lower sucker rod
The heating of water closed cycle drop glutinous device with insulating tube one by one under in forming heat source flow channel in hollow rod, and it is any
Glutinous device insulating tube drops in two adjacent heavy oil wells hot water closed cycle heating, and one of heavy oil wells hot water closed cycle adds
The top connection 1 that heat drop sticks device insulating tube can be heated with another heavy oil wells hot water closed cycle drops glutinous device insulating tube
Lower contact 10 be threadedly coupled, heavy oil wells hot water closed cycle heating drop glutinous device dismounted and replaced with insulating tube it is convenient.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. glutinous device insulating tube drops in a kind of heavy oil wells hot water closed cycle heating, it is characterised in that: including top connection, tube body group
Part and lower contact, the top connection and the lower contact are respectively arranged at the both ends of the body, and with the tube body
Component connection, glutinous device insulating tubes drop in any two adjacent heavy oil wells hot water closed cycles heating when use, wherein
One heavy oil wells hot water closed cycle heating drop glutinous device insulating tube the top connection can with it is thick described in another
The lower contact that glutinous device insulating tube drops in the heating of oil well hot water closed cycle is threadedly coupled, and adjacent described of any two
The heating of heavy oil wells hot water closed cycle is dropped glutinous device and is connected to by the top connection with the lower contact with insulating tube, it is described on connect
It is provided with card slot on head, by making lifting device block the card slot, the heavy oil wells hot water closed cycle can be heated and be dropped
Glutinous device insulating tube tripping in oil well.
2. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 1, it is characterised in that: appoint
Glutinous device insulating tube, one of them described heavy oil wells hot water drop in two adjacent heavy oil wells hot water closed cycle heating of anticipating
The top connection that glutinous device insulating tube drops in closed cycle heating can add with heavy oil wells hot water closed cycle described in another
The lower contact that heat drop sticks device insulating tube is connected using trapezoidal thread.
3. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 2, it is characterised in that: institute
The nominal diameter for stating trapezoidal thread is 21mm, screw pitch 3mm, depth of threat 0.9mm.
4. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 1, it is characterised in that: institute
Stating body includes that successively inner tube, insulating layer and the exterior protection pipe of nested setting, the both ends of said inner tube are divided from the inside to the outside
It is not inserted into the inside of the top connection and the lower contact, and is fixedly connected with the top connection and the lower contact, it is described outer
One end of portion's protecting tube is against on the end face of the lower contact, and the other end of the exterior protection pipe is sheathed on the top connection
On outer wall, the both ends of the insulating layer are each provided with one first sealing ring, and first sealing ring is for preventing well liquid from entering institute
State insulating layer.
5. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 4, it is characterised in that: institute
State the high-density thermal insulation layer that insulating layer includes fine-celled foam thermal insulation layer and is wrapped in outside the fine-celled foam thermal insulation layer.
6. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 4, it is characterised in that: institute
State for being additionally provided on the outer wall of top connection and moving for limiting the exterior protection pipe along the axis direction of the top connection
One limited step, and first limited step and the outer wall of the top connection use tapered surface transition.
7. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 4, it is characterised in that: institute
The outer diameter that top connection is equal to said inner tube close to the internal diameter of said inner tube one end is stated, and the top connection is close to said inner tube one end
Internal diameter be greater than the one end of the top connection far from said inner tube internal diameter, internal diameter of the lower contact close to said inner tube one end
Equal to the outer diameter of said inner tube, and internal diameter of the lower contact close to said inner tube one end is greater than the lower contact far from described interior
The internal diameter of one end of pipe.
8. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 1, it is characterised in that: institute
The inner wall for stating top connection includes along stepped the first ladder section set gradually of axis direction of the top connection, the second ladder
Section and third ladder section, and the inner wall of the top connection far from the body one end be the first ladder section, described first
The size of ladder section is greater than the size of the third ladder section, and any two adjacent heavy oil wells hot water encloseds are followed when use
Glutinous device insulating tube drops in ring heating, and the institute of glutinous device insulating tube drops in one of them heavy oil wells hot water closed cycle heating
The one end for stating lower contact can extend into the second-order bench and be threadedly coupled with the second-order bench.
9. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 8, it is characterised in that: institute
It states the axis direction on the outer wall of lower contact along the lower contact and is provided with several annular grooves, is mounted in each annular groove
Two sealing rings, second sealing ring are used to seal the gap between the outer wall of the lower contact and the first ladder section.
10. glutinous device insulating tube drops in heavy oil wells hot water closed cycle heating according to claim 1, it is characterised in that:
It is provided with the card slot in the lower contact, the second limited step is provided in the lower contact, second limited step is used
In the axial movement for limiting the lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113657.1A CN109854208A (en) | 2019-02-14 | 2019-02-14 | A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910113657.1A CN109854208A (en) | 2019-02-14 | 2019-02-14 | A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop |
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| Publication Number | Publication Date |
|---|---|
| CN109854208A true CN109854208A (en) | 2019-06-07 |
Family
ID=66897913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910113657.1A Pending CN109854208A (en) | 2019-02-14 | 2019-02-14 | A kind of glutinous device insulating tube of heavy oil wells hot water closed cycle heating drop |
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| CN (1) | CN109854208A (en) |
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| CN206409196U (en) * | 2016-11-11 | 2017-08-15 | 山东创佳石油机械制造有限公司 | One kind insulation hollow rod |
| CN108105534A (en) * | 2016-11-25 | 2018-06-01 | 上海美桥科材料科技有限公司 | A kind of method recovered the oil using high-performance thermal insulation material composition oil pipe heat-insulation system |
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2019
- 2019-02-14 CN CN201910113657.1A patent/CN109854208A/en active Pending
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| CN2272941Y (en) * | 1996-10-21 | 1998-01-21 | 东营区胜利福利石油工具厂 | Borehole thermal recovery compensator |
| CN201687403U (en) * | 2010-04-20 | 2010-12-29 | 王顺华 | Heat insulating pipe for producing oil |
| CN201786324U (en) * | 2010-09-04 | 2011-04-06 | 胜利油田智成石油技术开发有限公司 | Stainless steel high-temperature heat preserving and insulating connecting pipe |
| CN206409196U (en) * | 2016-11-11 | 2017-08-15 | 山东创佳石油机械制造有限公司 | One kind insulation hollow rod |
| CN108105534A (en) * | 2016-11-25 | 2018-06-01 | 上海美桥科材料科技有限公司 | A kind of method recovered the oil using high-performance thermal insulation material composition oil pipe heat-insulation system |
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