CN208168858U - A kind of unconventional energy resource downhole fluid heater - Google Patents
A kind of unconventional energy resource downhole fluid heater Download PDFInfo
- Publication number
- CN208168858U CN208168858U CN201820565929.2U CN201820565929U CN208168858U CN 208168858 U CN208168858 U CN 208168858U CN 201820565929 U CN201820565929 U CN 201820565929U CN 208168858 U CN208168858 U CN 208168858U
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- central tube
- valve body
- boss
- heater
- shell
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Abstract
The utility model discloses a kind of unconventional energy resource downhole fluid heaters, including shell, continuous helical deflecting plate, central tube, insulating layer, eddy-current coils, heat-radiating rod, high-temperature heat pipe, terminal box, check valve.The utility model utilizes eddy current effect indirect heating fluid, and the rate of heat addition for improving downhole fluid is combined by the boiling heat transfer, high-temperature heat pipe and continuous helical deflecting plate of Liquid Sodium in central tube.Heater realizes the secondary seal of heater outlet by changing input current, effectively downhole fluid can be avoided to be back in heater in the operational process of underground.
Description
Technical field
The utility model relates to a kind of unconventional energy resource downhole fluid heater more particularly to oil shales, heavy oil, thick
The unconventional energy resource such as oil, oil-sand, gas hydrates field.
Background technique
The utilization technology of hydrocarbon resources is divided into earth's surface using technology and converted in-situ technology under current position.Earth's surface utilization technology
It is the underground hydro carbons development of resources technology of current relative maturity, but there are mining cost height using technology for earth's surface；Atmosphere and underground
Water pollution is big, and water consumption is big；The disadvantages of being not suitable for the exploitation of deep hydrocarbon resources.Converted in-situ technology refers to underground hydro carbons ore bed
Situ heat treatment is carried out, underground hydrocarbon resources are pyrolyzed.Converted in-situ technology, which has, does not destroy earth's surface, and no pollution to the environment is fitted
The advantages that closing the exploitation of deep hydrocarbon resources.
Converted in-situ heating means have heat transfer, thermal convection, three kinds of heat radiation.Heat transfer heating means are by resistance heating
Device, which is placed in wellbore, directly heats destination layer, as United States Patent (USP) US2548360 describes a kind of electricity being placed in wellbore viscous oil
Viscous oil is heated and is diluted by heating element, the heating element, reduces the viscosity of oil, to be pumped to earth's surface；Patent
CN1676870A describes a kind of Convective Heating method, which injects oil shale layer for high-temperature steam, split kerogen
Solution is shale oil gas；United States Patent (USP) US6023554 describes a kind of electrical heating elements in casing, which passes through
Heat radiation heating muff, and the filler between casing and stratum, and then heating oil shale layer are filled in by casing heating.
Since the thermal coefficient of underground hydrocarbon resources is lower, there are heating speeds for single heat transfer and heat radiation mode
Slowly, the problem of low efficiency, and the contact area of above-mentioned Convective Heating technology high temperature fluid and oil shale layer is big, heat convection face
Product is big, can faster heating oil shale layer.Chinese patent：CN1676870A, high temperature fluid generating unit therein are deposited in earth's surface
In the problem of big along journey heat loss, not applicable deep oil shale is developed.
Underground hydro carbons ore bed is heated in underground, and there is no, to the heat loss of hydro carbons ore bed, improve capacity usage ratio from ground.
Chinese patent：CN106304446A, borehole fluid electric heater therein outlet are only single using spring force as check valve
Fastening force, spring elastic extenuation under long-term worst hot case is serious, there are problems that sealing effect cannot be reached.By electric whirlpool
Stream effect, boiling heat transfer, high-temperature heat pipe and the continuous helical deflecting plate structure of Liquid Sodium combine in inner central tube, not only can be with
The rate of heat addition of downhole fluid heater is improved, while by changing electric current, moreover it is possible to the effective sealing for improving heater outlet
Property, prevent downhole fluid reflux corrosion heater body structure.
Summary of the invention
The purpose of the utility model is to provide a kind of unconventional energy resource downhole fluid heater, solve to heat under existing well
The problems such as device rate of heat addition is low, and fluid pressure loss is big, heater outlet poor sealing effect.
The utility model by shell, continuous helical deflecting plate, central tube, insulating layer, eddy-current coils, high-temperature heat pipe, connect
Wire box, heat-radiating rod, check valve composition.
The upper part of the housing is provided with tapered internal screw thread, for connecting with exterior central tube, and seals；Tapered interior spiral shell
Line lower part is provided with a step, for placing washer, is sealed to the junction of shell and exterior central tube.The lower part of the housing
It is provided with tapered external screw thread, for connecting with check valve；The lower part of the housing is provided with bellmouth, close for cooperating with upper valve body
Heater outlet is sealed, prevents downhole fluid from flowing back.
The continuous helical deflecting plate is welded as a whole with central tube, and continuous helical deflecting plate is welded by baffle plate monomer
It connects.By the way that continuous helical deflecting plate is split as baffle plate monomer, the accuracy of manufacture of continuous helical deflecting plate can be improved, together
When reduce heater installation difficulty.
The central tube includes exterior central tube boss, exterior central tube column and inner central tube, exterior central tube boss and outer center
Tubing string is welded as a whole.Exterior central tube column and inner central tube are an entirety in lower weld.Exterior central tube boss top
It is provided with tapered internal screw thread, for connecting with external tool, facilitates tripping in heater.Tapered internal screw thread lower part is provided with cable
Hole, for across power line, cable hole to weld together with cable tube.Cable hole lower end boss outer rim is provided with tapered outer spiral shell
Line, for being connect with shell.Exterior central tube column is welded by six annulus, and in circumferencial direction setting, there are six gas injections on top
Hole, for injecting downhole fluid into heater.Injecting hole lower part is provided with cable passage corresponding with cable hole, and cable is logical
Road welds together with cable tube.Inner central tube lower part is provided with boss, and boss is used to strengthen current vortex effect when heating fluid
It answers and when coil is passed through direct current, strengthens the magnetism of inner central tube, improve the reliability that inner central tube attracts upper valve body, into
And improve the reliability of check valve.
Insulating layer is located at exterior central tube and between inner central tube, which still has good insulating properties at high temperature
Can, it can ensure that coil works normally.
Eddy-current coils are wrapped on the outside of inner central tube, are placed between inner central tube and exterior central tube, eddy-current coils
For high temperature resistant magnet exciting coil.
High-temperature heat pipe passes through inner central tube and exterior central tube, is welded as a whole with inner central tube and exterior central tube, high
Warm Guan Buyu coil contact.One spiralization cycle inside spin is disposed with 8-12 high-temperature heat pipe, and high-temperature heat pipe is evenly arranged.It is high
It is provided with one layer of liquid-sucking core in warm pipe, is transmitted to bringing-up section for condense radiating segment.It is filled in high-temperature heat pipe certain
The Liquid Sodium of amount, the transmission medium as heat.
Terminal box is welded on the outside of the cable hole at exterior central tube boss, and terminal box is used for sealed motive force line and signal wire,
Prevent connecting part from short circuit occur.
Heat-radiating rod is arranged inside and outside eddy-current coils, is staggeredly evenly arranged.Heat-radiating rod is high temperature superconducting materia, is heat
Good conductor.Heat-radiating rod upper end is located in injecting hole, when fluid passes through injecting hole, realizes to the augmentation of heat transfer of heat-radiating rod, reaches
To the purpose of coil heat dissipation.
Check valve includes valve seat, upper valve body, spring, lower valve body and temperature sensor.Valve seat top is provided with tapered interior spiral shell
Line, for being connect with shell.Valve support chamber is provided with gauge hole close to the position of valve seat lower boss, for across temperature sensing
Device.Valve seat lower boss center is provided with through-hole, for placing upper valve body.Go out there are six being uniformly arranged on the outside of valve seat boss centre bore
Stomata passes through for high temperature fluid.Valve seat lower part is provided with tapered groove, for cooperating sealing venthole with lower valve body.Upper valve
Body top be it is tapered, for achieving the purpose that closed feed water heater exports with the cooperation of the bellmouth of shell.It uniformly opens upper valve body lower part
There are four threaded holes, for fixing lower valve body.Spring is placed between upper valve body and valve seat lower boss, in tripping in heater
When closed feed water heater export.Lower valve body be it is tapered, achieve the purpose that seal venthole with the cooperation of the tapered groove in valve seat lower part.Lower valve
Body centre is uniformly driveed there are four hole, for being connect with upper valve body, fixed lower valve body.
In gas injection, fluid forces upper valve body while, drives lower valve body, when fluid flows through check valve upper valve body and under
Opening force is generated at valve body two respectively, upper valve body and lower valve body form two-stage opening force to improve the reliable of check valve breakdown action
Property.When being sealed to heater outlet, stops input AC electricity, hot fluid to be added is persistently injected, to heater body structure
Cooling.Input dc power again, inner central tube attracts upper valve body uplink at this time, while driving lower valve body uplink.Lower valve body uplink with
The venthole of the tapered groove cooperation seal valve seat of valve seat, carries out primary seal to heater；The cone of upper valve body uplink and shell
Shape hole cooperates closed feed water heater outlet, carries out secondary seal to heater.It is sealed by upper valve body and the secondary linkage of lower valve body,
The sealing reliability of heater outlet can effectively be improved.
The working principle and process of the utility model：
Heat injection well is crept into from earth's surface to underground hydrocarbon resources.In this heater lower going-into-well, fluid to be heated will be passed through, it is real
Now to the heating of fluid.The data fed back by temperature sensor, adjust power, frequency and injection rate of fluid of alternating current etc.
Parameter.When stopping heating, high-frequency alternating current is first closed, continues to inject cryogen to be heated；When the outlet temperature of cryogen
When degree is lower than 200 DEG C, it is passed through direct current, slowly reduces the injection rate of hot fluid to be added, realizes the sealing to heater outlet, it is close
Direct current is closed after the completion of envelope.
The beneficial effects of the utility model：
The utility model passes through by the boiling heat transfer, high-temperature heat pipe of Liquid Sodium in eddy current effect, inner central tube and continuously
Helical baffles combine, and improve the rate of heat addition of donwhole heater, reduce the pressure loss of fluid.It is inputted by changing
Electric current effectively raises heater outlet sealing effect.The utility model can realize to the exploitation of the superheated steam of formation at target locations,
Hot gas exploitation.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of the utility model；
Fig. 2 be the utility model A-A to diagrammatic cross-section.
Specific embodiment
Refering to Figure 1, a kind of unconventional energy resource downhole fluid electric heater, including shell 1, continuous helical baffling
Plate 2, central tube 3, insulating layer 4, eddy-current coils 5, high-temperature heat pipe 6, terminal box 7, heat-radiating rod 8 close check valve 9；
1 top of shell is provided with tapered internal screw thread, for connecting with exterior central tube 31, and seals；It is tapered
Internal screw thread lower part is provided with a step, for placing washer 11, is sealed to shell 1 and the junction of exterior central tube 31.
1 lower part of shell is provided with tapered external screw thread, for connecting with check valve 9；1 lower part of shell is provided with taper
Hole prevents downhole fluid from flowing back for cooperating closed feed water heater outlet with upper valve body 92.
The continuous helical deflecting plate 2 is welded as a whole with central tube 3, and continuous helical deflecting plate 2 is by baffle plate list
Body is welded as a whole.By the way that continuous helical deflecting plate 2 is split as baffle plate monomer, continuous helical deflecting plate can be improved
The accuracy of manufacture, while reducing the installation difficulty of heater.
The central tube 3 includes exterior central tube boss 311, exterior central tube column 312 and inner central tube 32, exterior central tube boss
311 and exterior central tube column 312 be welded as exterior central tube 31.Exterior central tube column 312 and inner central tube 32 are one in lower weld
It is whole.311 top of exterior central tube boss is provided with tapered internal screw thread, for connecting with external tool, facilitates tripping in heater.Cone
Type internal screw thread lower part is provided with cable hole, for across power line, cable hole to weld together with cable tube 71.Cable hole lower end
Boss outer rim is provided with tapered external screw thread, for connecting with shell.Exterior central tube column 312 is welded by six annulus, top
In circumferencial direction setting, there are six injecting holes, for injecting downhole fluid into heater.Injecting hole lower part is provided with and cable
The corresponding cable passage in hole, cable passage weld together with cable tube 71.32 lower part of inner central tube is provided with boss, boss
For strengthening eddy current effect when heating fluid and when coil is passed through direct current, strengthens the magnetism of inner central tube 32, improve
Inner central tube 32 attracts the reliability of upper valve body 92, and then improves the reliability of check valve 9.
Insulating layer 4 is located at exterior central tube 31 and between inner central tube 32, and insulating layer 4 still has good exhausted at high temperature
Edge performance can ensure that coil works normally.
Eddy-current coils 5 are wrapped in 32 outside of inner central tube, are placed between inner central tube 32 and exterior central tube 31.
High-temperature heat pipe 6 passes through inner central tube 32 and exterior central tube 31, is welded as one with inner central tube 32 and exterior central tube 31
A entirety, high-temperature heat pipe 6 not with coil contact.One spiralization cycle inside spin is disposed with 8~12 high-temperature heat pipes 6, high warm
Pipe 6 is evenly arranged.It is provided with one layer of liquid-sucking core in high-temperature heat pipe 6, is transmitted to bringing-up section for condense radiating segment.High warm
A certain amount of Liquid Sodium is filled in pipe 6, the transmission medium as heat.
Terminal box 7 is welded on the outside of the cable hole at exterior central tube boss 311, and terminal box 7 is used for sealed motive force line and letter
Number line prevents connecting part from short circuit occur.
Heat-radiating rod 8 is arranged inside and outside eddy-current coils 5, is staggeredly evenly arranged.Heat-radiating rod 8 is high temperature superconducting materia,
It is the good conductor of heat under the high temperature conditions.8 upper end of heat-radiating rod is located in injecting hole, when fluid passes through injecting hole, realizes to heat dissipation
The augmentation of heat transfer of stick 8 achievees the purpose that radiate to coil.
Check valve 9 includes valve seat 91, upper valve body 92, spring 93, lower valve body 94 and temperature sensor 95, and 91 top of valve seat is set
It is equipped with tapered internal screw thread, for connecting with shell 1.Valve support chamber is provided with gauge hole close to the position of 91 lower boss of valve seat, uses
In across temperature sensor 95.91 lower boss center of valve seat is provided with through-hole, for placing upper valve body 92.91 boss center of valve seat
Venthole there are six being uniformly arranged on the outside of hole, passes through for high temperature fluid.91 lower part of valve seat is provided with tapered groove, for under
The cooperation sealing venthole of valve body 94.92 top of upper valve body be it is tapered, for reaching closed feed water heater with the cooperation of the bellmouth of shell 1
The purpose of outlet.92 lower part of upper valve body is uniformly opened there are four threaded hole, for fixing lower valve body 94.Spring 93 is placed in upper valve body 92
Between 91 lower boss of valve seat, for the closed feed water heater outlet in tripping in heater.Lower valve body 94 be it is tapered, with valve seat 91
The tapered groove cooperation in lower part achievees the purpose that seal venthole.94 centre of lower valve body is uniformly driveed there are four hole, for
Valve body 92 connects, fixed lower valve body 94.
The connection screw thread on 1 top of shell and lower part is tapered screw thread, can play the role of sealing.
6 slant setting of high-temperature heat pipe is the helical angle of continuous helical deflecting plate 2 with heater axis angle,
In this way continuous helical deflecting plate 2 and high-temperature heat pipe 6 can diabatic process between strengthening fluid and high-temperature heat pipe, improve heater
Shell-side heat transfer coefficient.
The radiating segment of the heat-radiating rod 8 is located in the injecting hole of exterior central tube column 312, has both reduced the temperature of coil in this way
Degree, while the heat of coil is used for heater fluid, improve capacity usage ratio.
One boss is arranged at the lower part of the inner central tube 32, which can reinforce eddy current effect when heated, while close
When closing check valve 9, the magnetism of inner central tube 32 can be reinforced, improve the Reliability of Microprocessor of check valve 9.It is filled in inner central tube 32
Liquid Sodium for absorbing the heat of eddy current effect generation, while balancing the temperature of each high-temperature heat pipe.
The opening and closing of the check valve 9 are realized by upper valve body 91 and the secondary linkage of lower valve body 94, improve list
To the Reliability of Microprocessor of valve.
By in heater lower going-into-well, when gas injection, fluid forces upper valve body 92 is moved downward, while driving lower valve body 94 downward
Fluid flow passageway is opened in movement, generates unlatching when fluid flows through check valve 9 respectively at upper valve body 92 and 94 liang of lower valve body
Power, upper valve body 92 and lower valve body 94 form two-stage opening force to improve the reliability of 9 breakdown action of check valve.To heater outlet
When being sealed, stops input AC electricity, persistently inject hot fluid to be added, cool down to heater body structure.Input direct-current again
Electricity, inner central tube 32 attracts 92 uplink of upper valve body at this time, while driving 94 uplink of lower valve body.92 uplink of lower valve body and valve seat 91
The venthole of tapered groove cooperation seal valve seat 91, carries out primary seal to heater；The taper of upper valve body 92 uplink and shell 1
Hole cooperates closed feed water heater outlet, carries out secondary seal to heater.Secondary linkage by upper valve body 92 and lower valve body 94 is close
Envelope, can effectively improve the sealing reliability of heater outlet.
Claims (3)
1. a kind of unconventional energy resource downhole fluid heater, it is characterised in that：Including shell (1), continuous helical deflecting plate
(2), central tube (3), insulating layer (4), eddy-current coils (5), high-temperature heat pipe (6), terminal box (7), heat-radiating rod (8) and check valve
(9)；
Shell (1) top is provided with tapered internal screw thread, for being connect with exterior central tube (31), tapered internal screw thread lower part setting
There is a step, for placing washer, shell (1) and the junction of exterior central tube (31) are sealed；
Shell (1) lower part is provided with tapered external screw thread, for connecting with check valve (9)；Shell (1) lower part is provided with taper
Hole prevents downhole fluid from flowing back for exporting with upper valve body (92) cooperation closed feed water heater；
The continuous helical deflecting plate (2) is welded as a whole with central tube (3), and continuous helical deflecting plate (2) is by baffle plate
Monomer is welded as a whole；
The central tube (3) includes exterior central tube boss (311), exterior central tube column (312) and inner central tube (32), exterior central tube
Boss (311) and exterior central tube column (312) are welded as exterior central tube (31)；Exterior central tube column (312) and inner central tube (32) exist
Lower weld is an entirety；Exterior central tube boss (311) top is provided with tapered internal screw thread, for connecting with external tool；
Tapered internal screw thread lower part is provided with cable hole, for across power line, cable hole to weld together with cable tube (71)；Cable hole
Lower end boss outer rim is provided with tapered external screw thread, for connecting with shell；Exterior central tube column (312) welded by six annulus and
At in circumferencial direction setting, there are six injecting holes on top, for injecting downhole fluid into heater；Injecting hole lower part is provided with
Cable passage corresponding with cable hole, cable passage weld together with cable tube (71)；The setting of inner central tube (32) lower part
There is a boss, boss is for strengthening eddy current effect when heat fluid and when coil is passed through direct current, reinforcing inner central tube
(32) magnetism improves the reliability that inner central tube (32) attract upper valve body (92), and then improves the reliability of check valve (9)；
The insulating layer (4) is located at exterior central tube (31) and between inner central tube (32)；
The eddy-current coils (5) are wrapped on the outside of inner central tube (32), are placed on inner central tube (32) and exterior central tube
(31) between；
The high-temperature heat pipe (6) passes through inner central tube (32) and exterior central tube (31), with inner central tube (32) and exterior central tube
(31) be welded as a whole, high-temperature heat pipe (6) not with coil contact；One spiralization cycle inside spin is disposed with 8~12 height
Warm pipe (6), high-temperature heat pipe (6) are evenly arranged；It is provided with one layer of liquid-sucking core in high-temperature heat pipe (6), for condensing radiating segment
Be transmitted to bringing-up section；High-temperature heat pipe is filled with Liquid Sodium in (6), the transmission medium as heat；
The terminal box (7) is welded on the outside of the cable hole at exterior central tube boss (311), and terminal box (7) is dynamic for sealing
The line of force and signal wire prevent connecting part from short circuit occur；
The heat-radiating rod (8) is arranged inside and outside eddy-current coils (5), is staggeredly evenly arranged；Heat-radiating rod (8) upper end is located at
In injecting hole；
The check valve (9) includes valve seat (91), upper valve body (92), spring (93), lower valve body (94) and temperature sensor
(95), valve seat (91) top is provided with tapered internal screw thread, for connecting with shell (1)；Valve support chamber is convex close to valve seat (91) lower part
The position of platform is provided with gauge hole, for across temperature sensor (95)；Valve seat (91) lower boss center is provided with through-hole, is used for
It places upper valve body (92)；Venthole there are six being uniformly arranged on the outside of valve seat (91) boss centre bore, passes through for high temperature fluid；Valve
Seat (91) lower part is provided with cone tank, for cooperating sealing venthole with lower valve body (94)；Upper valve body (92) top is tapered, use
Achieve the purpose that closed feed water heater exports in cooperating with the bellmouth of shell (1)；It uniformly opens there are four spiral shell upper valve body (92) lower part
Pit, for fixing lower valve body (94)；Spring (93) is placed between upper valve body (92) and valve seat (91) lower boss, under
Closed feed water heater exports when entering heater；Lower valve body (94) be it is tapered, reach and seal with the cooperation of valve seat (91) lower cone type groove
The purpose of stomata；Lower valve body (94) centre is uniformly driveed there are four hole, for being connect with upper valve body (92), fixed lower valve body
(94)。
2. a kind of unconventional energy resource downhole fluid heater according to claim 1, it is characterised in that：The heat dissipation
Stick (8) is high temperature superconducting materia.
3. a kind of unconventional energy resource downhole fluid heater according to claim 1, it is characterised in that：The high temperature
Heat pipe (6) slant setting is the helical angle of continuous helical deflecting plate (2) with heater axis angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565929.2U CN208168858U (en) | 2018-04-20 | 2018-04-20 | A kind of unconventional energy resource downhole fluid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565929.2U CN208168858U (en) | 2018-04-20 | 2018-04-20 | A kind of unconventional energy resource downhole fluid heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208168858U true CN208168858U (en) | 2018-11-30 |
Family
ID=64369823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820565929.2U Withdrawn - After Issue CN208168858U (en) | 2018-04-20 | 2018-04-20 | A kind of unconventional energy resource downhole fluid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208168858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301817A (en) * | 2018-04-20 | 2018-07-20 | 吉林大学 | A kind of unconventional energy resource downhole fluid heater |
| CN113294767A (en) * | 2021-04-29 | 2021-08-24 | 西安交通大学 | Sectional air-supplied supercritical multi-element thermal fluid generation system and method |
-
2018
- 2018-04-20 CN CN201820565929.2U patent/CN208168858U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301817A (en) * | 2018-04-20 | 2018-07-20 | 吉林大学 | A kind of unconventional energy resource downhole fluid heater |
| CN108301817B (en) * | 2018-04-20 | 2023-09-15 | 吉林大学 | Underground fluid heater for unconventional energy source |
| CN113294767A (en) * | 2021-04-29 | 2021-08-24 | 西安交通大学 | Sectional air-supplied supercritical multi-element thermal fluid generation system and method |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181130 Effective date of abandoning: 20230915 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181130 Effective date of abandoning: 20230915 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |