CN105178913A - Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof - Google Patents
Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof Download PDFInfo
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- CN105178913A CN105178913A CN201510475412.5A CN201510475412A CN105178913A CN 105178913 A CN105178913 A CN 105178913A CN 201510475412 A CN201510475412 A CN 201510475412A CN 105178913 A CN105178913 A CN 105178913A
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- natural gas
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
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- Insulated Conductors (AREA)
Abstract
The invention discloses a natural gas power generation electric heating wax removing and preventing device based on a skin effect and application thereof. The device comprises a natural gas collecting part, a natural gas power generation part, and an electric heating wax removing and preventing device powered by the natural gas power generation part, wherein the natural gas collecting part is used for collecting and separating natural gas exhausted from a shaft; and the natural gas power generation part uses the natural gas for generating the electricity. A power supply needed for electric heating of a steel-armored cable is from the natural gas power generation part; a gas source needed by the natural gas power generation part can be directly obtained from associated gas produced from an oil well; the associated gas can be used; and the dependence of an electric heating wax removing and preventing technology on a power grid is prevented.
Description
Technical field
The present invention relates to a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect and application thereof, belong to the technical field of oil-gas field development equipment.
Background technology
In oil recovery process, due to the effusion of lighter hydrocarbons in the reduction of formation temperature, pressure and crude oil, the wax in crude oil can be separated out with the form of crystal and be adsorbed on tubing wall.Paraffin deposit in pit shaft can cause oil well oil flow channel to narrow, and hinders crude oil flow, even can cause oil well wax card, affect the rate of withdrawal of crude oil, even cause oil well to stop production time serious.In order to eliminate the impact of oil well paraffinication, needing regular closing well to remove the wax that oil well tube wall deposits, affecting oil well and normally produce, add crude oil production cost simultaneously.
At present, control and remove of well paraffin technology category is various, as Mechanical Method, heating power method, chemical method or microbial method etc., wherein, heating power wax removal technique due to simple to operate, take effect fast and be widely used in the pit shaft wax removal and inhibition work in each oil field.Common heating power wax removal technique comprises the heat of heated fluid injection in pit shaft and washes method wax removal, electrical heating method Paraffin Removal etc. based on kelvin effect.Electrical heating method adopts sucker rod, oil pipe etc. as the heater element in circuit usually, relies on kelvin effect principle, and what continue in process of production heats the crude oil in oil pipe, does not need to close a well in and can carry out Paraffin Removal, and respond well.Electrical heating method adopts ground mains supply usually, and its subject matter is that power consumption is large, significantly can increase network load.For the gas-lift well, the flowing well that there is no power supply near well head, and the oil well that network load is limited, the application of this method can be restricted.Meanwhile, for conventional sucker rod or hollow rod heating, due to the existence of box cupling, under enter in process to realize to enter continuously, add the operating risk in installation process.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect.
The present invention also provides a kind of method of work of the natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect.
The present invention adopts oil well associated natural gas to generate electricity and provides power supply, regulate power frequency by power frequency electric thermal control cabinet and control heating power, continuous steel armored cable is adopted to heat, cable core and steel armour form loop, pass to alternating current, utilize kelvin effect to produce heat energy on steel armour outer wall, remove or prevent crude oil wax deposition in oil pipe.The method small investment, installation rate is fast, can realize steel armored cable continuous under enter and electrical heating wax removal in oil recovery process and wax control, ensure that the safety in the normal production of oil well and installation exercise process.
Terminological interpretation:
The heat of kelvin effect companion heat produces principle: because the round electric current in insulated conductor and ferromagnetism carbon steel " heat pipe " produces mutual induction effect, cause the return current in " heat pipe " to be gathered in its inner wall surface, and produce a kind of physical phenomenon of heat.Namely the collection skin phenomenon of electric current is concentrated on the inwall flowing of " heat pipe ", make heat pipe produce heat, and the outer wall surface of heat pipe does not have the electric current that can survey.
The heat generating source of kelvin effect companion heat is in three parts:
1. electric current is in ferromagnetism carbon steel " heat pipe " inwall return course, the heat produced by " heat pipe " impedance;
2. cause hysteresis and vortex flow due to the alternating magnetic field produced between insulated conductor and " heat pipe " and the heat produced;
3. due to insulated conductor I
2the impedance of R and the heat produced.
Technical scheme of the present invention is as follows:
Based on a natural gas power electrical heating wax removal wax-proofing apparatus for kelvin effect, it is characterized in that, the electrical heating wax removal wax-proofing apparatus that this device comprises natural gas collection unit, natural gas power portion and powered by natural gas power portion;
Described natural gas collection unit is for collecting and being separated the natural gas of discharging in pit shaft;
Described natural gas power portion utilizes natural gas to generate electricity.
Preferred according to the present invention, described natural gas collection unit comprise be connected successively with pit shaft oil gas metering station, Combined Treatment station and natural gas purification station.
Preferred according to the present invention, be connected with described Combined Treatment station and be equipped with oil storage tank.
Preferred according to the present invention, be connected with described natural gas purification station and be equipped with gasholder.
Preferred according to the present invention, natural gas power portion comprises connected natural gas power unit and power frequency electric thermal control cabinet; Described power frequency electric thermal control cabinet is for controlling electrical heating wax removal wax-proofing apparatus.
Preferred according to the present invention, electrical heating wax removal wax-proofing apparatus comprises and seals by production tree the steel armored cable extended in pit shaft, and described steel armored cable is connected with described power frequency electric thermal control cabinet.
Preferred according to the present invention, described steel armored cable comprises the steel armour sheath, insulation material layer, polytetrafluoroethylene floor and the cable core that set gradually from outside to inside.The advantage herein designed is, the effect that the present invention quotes polytetrafluoroethylene floor is for cable core sealing and heatproof, and sealing causes short circuit for preventing external fluid to contact with cable core, and heatproof is the heatproof degree of raising cable core.
Preferred according to the present invention, described steel armour sheath is continuous seamless steel pipe.The advantage herein designed is, when described steel armored cable is by conversion power supply, utilizes kelvin effect to produce heat energy on the outer wall of described steel armour sheath, ensures cable seal and hot strength simultaneously.
Preferred according to the present invention, described electrical heating wax removal wax-proofing apparatus is also included in the well head high pressure sealing system that described production tree top is arranged; Described well head high pressure sealing system comprises pressure cap, sealed packing, spring, flashboard and the cable clamping clamping plate that described steel armored cable passes successively.The advantage herein designed is, the present invention is according to the structure of steel armored cable and principle, pressure cap, sealed packing, spring, flashboard and cable clamping clamping plate are adopted to form high pressure sealing system, during with described steel armored cable Combination application, steel armored cable can be realized surprisingly to fall well and wellhead sealing when tripping out steel armored cable operation with pressure: wherein steel armored cable and pressure cap, sealed packing, spring and flashboard constitute well head high pressure sealing, realize removing process and heating process mesohigh sealing function at steel armored cable; Described cable clamping clamping plate are for controlling steel armored cable position in the wellbore.When steel armored cable lower going-into-well cylinder, flashboard is opened by described spring; When steel armored cable trips out, described spring reset makes flashboard close, and prevents oil-gas-liquid from spraying along well head.
Preferred according to the present invention, be also provided with on the top of described pressure cap and outstandingly connect device.
Preferred according to the present invention, described electrical heating wax removal wax-proofing apparatus is also included on tail end that described steel armored cable stretches into down-hole and is provided with concentrated heater, described concentrated heater comprises the resistance wire be connected with described steel armored cable, has thermal insulation layer in described resistance wire outer setting.
Preferred according to the present invention, described steel armored cable is connected with thermal insulation layer with resistance wire respectively by two collar joint.
Preferred according to the present invention, described thermal insulation layer is thermal conductive silicon glue-line.The advantage herein designed is, in order to adapt to the Holes of Complicated Wells body structure of down-hole, thermal conductive silicon glue-line combines in steel armored cable and resistance wire by the present invention, realizes cable and can bend as required on stratum.
Preferred according to the present invention, described natural gas power portion comprises connected natural gas power unit and many group power frequency electric thermal control cabinets; Described many group power frequency electric thermal control cabinets are used for the corresponding electrical heating wax removal wax-proofing apparatus controlling to install at multiple pit shaft respectively.The advantage herein designed is, the present invention can realize the power frequency parameter electric energy that natural gas power unit exports being regulated respectively power frequency electric thermal control cabinet according to different oil well paraffinication situation, and then realizes a natural gas power unit and carry out not interfereing with each other the operation of formula Paraffin Removal for multiple pit shaft simultaneously.
Based on a method of work for the natural gas power electrical heating wax removal wax-proofing apparatus of kelvin effect, comprise step as follows:
1) described natural gas collection unit collect, the natural gas isolated in pit shaft, and transmit natural gas and generate electricity to natural gas power portion;
2) described natural gas power portion carries out conversion power supply to described electrical heating wax removal wax-proofing apparatus:
The variable-frequency power sources that described power frequency electric thermal control cabinet exports, its live wire is connected with the cable core of described steel armored cable;
Its zero line is connected with the steel armour sheath of described steel armored cable;
Make described cable core and steel armour sheath form loop, utilize kelvin effect to produce heat energy on the outer wall of steel armour sheath, remove or prevent crude oil wax deposition in the wellbore.
Preferred according to the present invention, the method for work of described electrical heating wax removal wax-proofing apparatus, also comprises and trips out pit shaft step to steel armored cable lower going-into-well cylinder and steel armored cable:
3) when steel armored cable lower going-into-well cylinder, flashboard is opened by described spring, steel armored cable enters described pit shaft, and steel armored cable and pressure cap, sealed packing, spring and flashboard constitute well head high pressure sealing, realizes under steel armored cable, enter process and heating process mesohigh sealing function;
4) when steel armored cable trips out pit shaft, described spring reset makes flashboard close, and prevents oil-gas-liquid from spraying along well head.
Preferred according to the present invention, the method for work of described electrical heating wax removal wax-proofing apparatus, also comprise steel armored cable surprisingly fall pit shaft time step:
5) when described steel armored cable surprisingly falls well, described spring reset makes flashboard close, and prevents oil-gas-liquid from spraying along well head.
Advantage of the present invention is:
(1) needed for the electrical heating of steel armored cable of the present invention, power supply comes from natural gas power portion, needed for this natural gas power portion, source of the gas can directly obtain from the associated gas of the extraction oil well, both can utilize associated gas, turn avoid electrical heating method wax removal anti-wax technique to the dependence of electrical network.
(2) the present invention utilizes steel armored cable to melt the wax deposit in pit shaft, cable core and steel armour is utilized to form loop, on steel armored cable outer wall, heat energy is produced based on kelvin effect, can realize steel armored cable continuous under enter and electrical heating wax removal in oil recovery process and wax control, ensure that the safety in the normal production of oil well and installation exercise process.
(3) the present invention is equipped with well head high pressure sealing system, coordinates with described steel armored cable, and the high pressure solved in the movable sealing of steel armored cable and well is gushed problem.
(4) the present invention adopts spring sealed formula switch, and when entering cable under loading, sealing damper is opened by Compress Spring; When cable trips out, spring reset makes flashboard close, and prevents oil-gas-liquid from spraying; Realize cable surprisingly to fall well and wellhead sealing when tripping out wireline operation with pressure.
(5) the present invention can realize the power frequency parameter electric energy that natural gas power unit exports being regulated respectively power frequency electric thermal control cabinet according to different oil well paraffinication situation, and then realizes a natural gas power unit and carry out not interfereing with each other the operation of formula Paraffin Removal for multiple pit shaft simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the natural gas power electrical heating Paraffin Removal device based on kelvin effect of the present invention;
Fig. 2 is the cross-sectional schematic of steel armored cable described in the present invention;
Fig. 3 is for concentrating the structural representation of heater described in the present invention;
Fig. 4 is the structural representation of the described natural gas power electrical heating Paraffin Removal device based on kelvin effect of the embodiment of the present invention ten;
In figures 1-4,1-transmission line of electricity; 2-outstanding connect device; 3-pressure cap; 4-sealed packing; 5-spring; 6-flashboard; 7-cable clamping clamping plate; 8-flange; 9-production tree; 10-cementing concrete wall; 11-sleeve pipe; 12-pit shaft; 13-steel armored cable; 14-oil and gas multiphase flow pipeline; 15-oil gas metering station; 16-oil and gas multiphase flow pipeline; 17-Combined Treatment station; 18-petroleum pipeline; 19-oil storage tank; 20-natural gas transmission pipeline; 21-natural gas purification station; 22-natural gas transmission pipeline; 23-gasholder; 24-natural gas transmission pipeline; 25-natural gas power unit; 26-transmission line of electricity; 27-power frequency electric thermal control cabinet; 28-steel armour sheath; 29-insulation material layer; 30-polytetrafluoroethylene floor; 31-cable core; 32-concentrate heater; 33-bis-collar joint; 34-thermal insulation layer; 35-resistance wire.
In the diagram, 27-1-the first power frequency electric thermal control cabinet; 27-2-the second power frequency electric thermal control cabinet; 27-3-the 3rd power frequency electric thermal control cabinet; 27-4-the 4th power frequency electric thermal control cabinet;
9-1-the first production tree; 9-2-the second production tree; 9-3-the three production tree; 9-4-the four production tree.
Detailed description of the invention
Below in conjunction with manual and accompanying drawing, the present invention is described in detail, but is not limited thereto.
Embodiment one,
Based on a natural gas power electrical heating wax removal wax-proofing apparatus for kelvin effect, the electrical heating wax removal wax-proofing apparatus comprising natural gas collection unit, natural gas power portion and powered by natural gas power portion;
Described natural gas collection unit is for collecting and being separated the natural gas of discharging in pit shaft 12;
Described natural gas power portion utilizes natural gas to generate electricity.
Described natural gas collection unit comprise be connected successively with pit shaft 12 oil gas metering station 15, Combined Treatment station 17 and natural gas purification station 21.
Natural gas power portion comprises connected natural gas power unit 25 and power frequency electric thermal control cabinet 27; Described power frequency electric thermal control cabinet 27 is for controlling electrical heating wax removal wax-proofing apparatus.
Electrical heating wax removal wax-proofing apparatus comprises and seals by production tree 9 steel armored cable 13 extended in pit shaft 12, and described steel armored cable 13 is connected with described power frequency electric thermal control cabinet 27.
Embodiment two,
A kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect as described in embodiment one, its difference is, described steel armored cable 13 comprises the steel armour sheath 28, insulation material layer 29, polytetrafluoroethylene floor 30 and the cable core 31 that set gradually from outside to inside.
Described steel armour sheath 28 is continuous seamless steel pipe.
Embodiment three,
A kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect as described in embodiment two, its difference is, described electrical heating wax removal wax-proofing apparatus is also included in the well head high pressure sealing system that described production tree 9 top is arranged; Described well head high pressure sealing system comprises pressure cap 3, sealed packing 4, spring 5, flashboard 6 and the cable clamping clamping plate 7 that described steel armored cable 13 passes successively.
Also be provided with on the top of described pressure cap 3 to hang and connect device 2.
Embodiment four,
Based on the method for work of the natural gas power electrical heating wax removal wax-proofing apparatus of kelvin effect as described in embodiment one, two, three, comprise step as follows:
1) described natural gas collection unit collect, the natural gas isolated in pit shaft, and transmit natural gas and generate electricity to natural gas power portion;
2) described natural gas power portion carries out conversion power supply to described electrical heating wax removal wax-proofing apparatus:
The variable-frequency power sources that described power frequency electric thermal control cabinet 27 exports, its live wire is connected with the cable core 31 of described steel armored cable 13;
Its zero line is connected with the steel armour sheath 28 of described steel armored cable 13;
Make described cable core 31 form loop with steel armour sheath 28, utilize kelvin effect to produce heat energy on the outer wall of steel armour sheath 28, remove or prevent crude oil wax deposition in pit shaft 12.
Embodiment five,
Based on the method for work of the natural gas power electrical heating wax removal wax-proofing apparatus of kelvin effect as described in embodiment three, be with the difference of embodiment four, described method of work also comprises and trips out pit shaft step to steel armored cable lower going-into-well cylinder and steel armored cable:
3) when steel armored cable 13 lower going-into-well cylinder 12, flashboard 6 is opened by described spring 5, steel armored cable 13 enters described pit shaft 12, steel armored cable 13 and pressure cap 3, sealed packing 4, spring 5 and flashboard 6 constitute well head high pressure sealing, realize entering process and heating process mesohigh sealing function for 13 times at steel armored cable;
4) when steel armored cable 13 trips out pit shaft 12, described spring 5 resets and flashboard 6 cuts out, and prevents oil-gas-liquid from spraying along well head.
Embodiment six,
Based on the method for work of the natural gas power electrical heating wax removal wax-proofing apparatus of kelvin effect as described in embodiment three, be with the difference of embodiment four, described method of work also comprise steel armored cable surprisingly fall pit shaft time step:
5) when described steel armored cable 13 surprisingly falls well, described spring 5 resets and flashboard 6 cuts out, and prevents oil-gas-liquid from spraying along well head.
Embodiment seven,
A kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect as described in embodiment one, its difference is, is connected is equipped with oil storage tank 19 with described Combined Treatment station 17; Be connected with described natural gas purification station 21 and be equipped with gasholder 23.
Embodiment eight,
When wax deposition in well wellbore 12 is serious, only by steel armored cable 13 heat cannot completely wax removal time, the present embodiment provides a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect, and the difference of itself and embodiment one, two, three is:
Described electrical heating wax removal wax-proofing apparatus is also included on tail end that described steel armored cable 13 stretches into down-hole and is provided with concentrated heater 32, described concentrated heater 32 comprises the resistance wire 35 be connected with described steel armored cable 13, has thermal insulation layer 34 in described resistance wire 35 outer setting.Described thermal insulation layer 34 is thermal conductive silicon glue-line.
Utilize and concentrate the resistance wire 35 in heater 32 and thermal insulation layer 34 pairs of serious positions of wax deposition to carry out concentrating heating, realize the wax melting of paraffin blockage position.
Embodiment nine,
A kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect as described in embodiment eight, its difference is, described steel armored cable 13 is connected with thermal insulation layer 34 with resistance wire 35 respectively by two collar joint 33.
Embodiment ten,
As shown in Figure 4.
For the multiple waxing in production well pit shafts relatively concentrated, need to multiple oil well simultaneously or rotate and carry out wax removal operation, can according to the generate output of the quantity determination natural gas power unit 25 of oil well.
Described natural gas power portion comprises connected natural gas power unit 25 and four groups of power frequency electric thermal control cabinets: the first power frequency electric thermal control cabinet 27-1, the second power frequency electric thermal control cabinet 27-2, the 3rd power frequency electric thermal control cabinet 27-3, the 4th power frequency electric thermal control cabinet 27-4; Described four groups of power frequency electric thermal control cabinets are used for the corresponding electrical heating wax removal wax-proofing apparatus controlling to install at four pit shafts respectively.
Claims (10)
1. based on a natural gas power electrical heating wax removal wax-proofing apparatus for kelvin effect, it is characterized in that, the electrical heating wax removal wax-proofing apparatus that this device comprises natural gas collection unit, natural gas power portion and powered by natural gas power portion;
Described natural gas collection unit is for collecting and being separated the natural gas of discharging in pit shaft;
Described natural gas power portion utilizes natural gas to generate electricity.
2. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 1, is characterized in that, described natural gas collection unit comprise be connected successively with pit shaft oil gas metering station, Combined Treatment station and natural gas purification station.
3. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 2, is characterized in that, be connected be equipped with oil storage tank with described Combined Treatment station; Be connected with described natural gas purification station and be equipped with gasholder.
4. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 1, it is characterized in that, natural gas power portion comprises connected natural gas power unit and power frequency electric thermal control cabinet; Described power frequency electric thermal control cabinet is for controlling electrical heating wax removal wax-proofing apparatus; Preferably, described natural gas power portion comprises connected natural gas power unit and many group power frequency electric thermal control cabinets; Described many group power frequency electric thermal control cabinets are used for the corresponding electrical heating wax removal wax-proofing apparatus controlling to install at multiple pit shaft respectively.
5. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 4, it is characterized in that, described electrical heating wax removal wax-proofing apparatus comprises and seals by production tree the steel armored cable extended in pit shaft, and described steel armored cable is connected with described power frequency electric thermal control cabinet.
6. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 5, it is characterized in that, described steel armored cable comprises the steel armour sheath, insulation material layer, polytetrafluoroethylene floor and the cable core that set gradually from outside to inside.
7. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 6, it is characterized in that, described steel armour sheath is continuous seamless steel pipe.
8. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 5, is characterized in that, described electrical heating wax removal wax-proofing apparatus is also included in the well head high pressure sealing system that described production tree top is arranged; Described well head high pressure sealing system comprises pressure cap, sealed packing, spring, flashboard and the cable clamping clamping plate that described steel armored cable passes successively; Preferably, be also provided with on the top of described pressure cap and outstanding connect device.
9. a kind of natural gas power electrical heating wax removal wax-proofing apparatus based on kelvin effect according to claim 5, it is characterized in that, described electrical heating wax removal wax-proofing apparatus is also included on tail end that described steel armored cable stretches into down-hole and is provided with concentrated heater, described concentrated heater comprises the resistance wire be connected with described steel armored cable, has thermal insulation layer in described resistance wire outer setting; Preferably, described steel armored cable is connected with thermal insulation layer with resistance wire respectively by two collar joint; Preferably, described thermal insulation layer is thermal conductive silicon glue-line.
10., as claimed in claim 6 based on a method of work for the natural gas power electrical heating wax removal wax-proofing apparatus of kelvin effect, it is characterized in that, it is as follows that this method of work comprises step:
1) described natural gas collection unit collect, the natural gas isolated in pit shaft, and transmit natural gas and generate electricity to natural gas power portion;
2) described natural gas power portion carries out conversion power supply to described electrical heating wax removal wax-proofing apparatus:
The variable-frequency power sources that described power frequency electric thermal control cabinet exports, its live wire is connected with the cable core of described steel armored cable;
Its zero line is connected with the steel armour sheath of described steel armored cable;
Make described cable core and steel armour sheath form loop, utilize kelvin effect to produce heat energy on the outer wall of steel armour sheath, remove or prevent crude oil wax deposition in the wellbore;
Preferably, this method of work also comprises and trips out pit shaft step to steel armored cable lower going-into-well cylinder and steel armored cable:
3) when steel armored cable lower going-into-well cylinder, flashboard is opened by described spring, steel armored cable enters described pit shaft, and steel armored cable and pressure cap, sealed packing, spring and flashboard constitute well head high pressure sealing, realizes under steel armored cable, enter process and heating process mesohigh sealing function;
4) when steel armored cable trips out pit shaft, described spring reset makes flashboard close, and prevents oil-gas-liquid from spraying along well head;
Preferably, this method of work also comprise steel armored cable surprisingly fall pit shaft time step:
5) when described steel armored cable surprisingly falls well, described spring reset makes flashboard close, and prevents oil-gas-liquid from spraying along well head.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475412.5A CN105178913A (en) | 2015-08-05 | 2015-08-05 | Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof |
| PCT/CN2015/086777 WO2017020336A1 (en) | 2015-08-05 | 2015-08-12 | Electric-heating wax removal and prevention device with natural gas power generation based on skin effect and application thereof |
| US15/110,209 US20170234111A1 (en) | 2015-08-05 | 2015-08-15 | Device for Removing and Preventing Paraffin by Using Electric Heating Generated from Skin Effect-based Natural Gas Electricity and Application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475412.5A CN105178913A (en) | 2015-08-05 | 2015-08-05 | Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105178913A true CN105178913A (en) | 2015-12-23 |
Family
ID=54901269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510475412.5A Pending CN105178913A (en) | 2015-08-05 | 2015-08-05 | Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20170234111A1 (en) |
| CN (1) | CN105178913A (en) |
| WO (1) | WO2017020336A1 (en) |
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| CN107339082A (en) * | 2017-07-28 | 2017-11-10 | 大庆科丰石油技术开发有限公司 | Well head kelvin effect electric heater unit |
| CN107605420A (en) * | 2017-09-13 | 2018-01-19 | 中国石油天然气股份有限公司 | Operation well rod tube on-line cleaning system |
| CN109441400A (en) * | 2018-12-04 | 2019-03-08 | 山东石大油田技术服务股份有限公司 | A kind of device and method of gas-lift production well Paraffin Removal |
| CN112081555A (en) * | 2020-09-22 | 2020-12-15 | 山东天汇石油技术有限公司 | Viscosity reducing device for thick oil rodless submersible pump well |
| CN112081554A (en) * | 2020-09-22 | 2020-12-15 | 山东天汇石油技术有限公司 | Using method of viscosity reduction device of thick oil rodless submersible pump well |
| CN114482954A (en) * | 2022-02-16 | 2022-05-13 | 石家庄之迪石油工程技术有限责任公司 | Novel process for improving yield by using oil well associated gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107339082A (en) * | 2017-07-28 | 2017-11-10 | 大庆科丰石油技术开发有限公司 | Well head kelvin effect electric heater unit |
| CN107605420A (en) * | 2017-09-13 | 2018-01-19 | 中国石油天然气股份有限公司 | Operation well rod tube on-line cleaning system |
| CN109441400A (en) * | 2018-12-04 | 2019-03-08 | 山东石大油田技术服务股份有限公司 | A kind of device and method of gas-lift production well Paraffin Removal |
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| CN114482954A (en) * | 2022-02-16 | 2022-05-13 | 石家庄之迪石油工程技术有限责任公司 | Novel process for improving yield by using oil well associated gas |
| CN115474300A (en) * | 2022-11-02 | 2022-12-13 | 久盛电气股份有限公司 | Oil inlet pipe type heating cable structure, device and heating method |
| CN115474300B (en) * | 2022-11-02 | 2023-01-31 | 久盛电气股份有限公司 | Oil inlet pipe type heating cable structure, device and heating method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170234111A1 (en) | 2017-08-17 |
| WO2017020336A1 (en) | 2017-02-09 |
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Effective date of registration: 20160125 Address after: 266580 Qingdao economic and Technological Development Zone, Changjiang Road, No. 66, Shandong Applicant after: China Petroleum University (East China) Address before: 266580 Qingdao economic and Technological Development Zone, Changjiang Road, No. 66, Shandong Applicant before: Li Binfei Applicant before: Zhang Xinjun |
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Application publication date: 20151223 |