CN2823550Y - Oil pipe-sleeve electromagnetic loop induction heating well for extracting chick oil - Google Patents
Oil pipe-sleeve electromagnetic loop induction heating well for extracting chick oil Download PDFInfo
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- CN2823550Y CN2823550Y CN 200520109909 CN200520109909U CN2823550Y CN 2823550 Y CN2823550 Y CN 2823550Y CN 200520109909 CN200520109909 CN 200520109909 CN 200520109909 U CN200520109909 U CN 200520109909U CN 2823550 Y CN2823550 Y CN 2823550Y
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Abstract
The utility model relates to an oil pipe and sleeve pipe electromagnetic loop induction heating well for viscous crude oil production in the oil industry. The utility model is characterized in that the utility model adopts an electromagnetic induction heating device which is formed from an electrical connector that is formed by the integrative connection of oil pipes and sleeve pipes. Auxiliary devices for the electromagnetic induction heating device includes an insulation pumping rod, an insulation oil pipe hanger, an insulation oil pipe pup joint, and an insulation oil pipe centralizer, which are used for solving the insulation problems of a pumping unit, an oil pipe, and a wellhead device, the wellhead device and the oil pipe, and the oil pipe and a sleeve above an electrical connecting point. The utility model has the effect that an electromagnetic induction heating pipe column which takes oil pipe conduction and heating as chief and sleeve pipe conduction and heating as assistance replaces a heating device for laying of cables in a hollow oil pumping rod, therefore the problems that the hollow oil pumping rod is easy to break and pull off, and cables are easy to break are solved, the durable performance of a heating element is improved, maintenance frequency is reduced, and oil production efficiency is improved. The utility model homogeneously generates heat and does not have a short joint for concentrate electromagnetic induction heating. The utility model needs to generate heat and bear weights so as to solve the problem that the external insulation of electrical heating pipes and the insulation of connecting cables between the electrical heating pipes are easy to break.
Description
Technical field
The utility model relates to petroleum industry heavy crude heat extraction technical field, is the oil well that has electric tracing, wax removal function in a kind of thickened oil recovery process, is a kind of electromagnetic induction heating oil well that conduction, excitation, magnetic conduction, eddy current kelvin effect are generated heat that integrates.
Background technology
The electric tracing that existing thickened oil recovery well is used, wax removal technology have following five kinds:
1. single core insulation cable penetrates in the hollow sucker rod, until single-core cable and hollow sucker rod short circuit are got up in hollow sucker rod bottom, forms the electric heating loop, and power supply is the single phase industrial frequence alternating current.The two sends heat by cable, hollow sucker rod.Because frequency is low, the electromagnetic induction calorific value on the hollow sucker rod seldom.It has solved companion's heat, the wax removal problem of thickened oil recovery the earliest, has moved the more than ten years in each oil field of China.This rating of set is between 60-100kW, and powerful like this single phase industrial frequence power supply meeting brings very big harm to electrical network:
The first causes electrical network, and each bears imbalance mutually, and the motor electric energy imbalance that has influence under supply transformer and the same transformer is exerted oneself less, and winding is overheated.For addressing this problem, in its powering shelf, added big electric capacity again, big inductance is thrown into them on the non-loaded two-phase, cause electric energy phase-splitting phase shift stack, the skew of electroneutral point is diminished, but but this two-phase fictitious load that adds descends three-phase activity coefficient significantly, its power factor on principle≤0.6547.
Even two to be that electroneutral point skew reaches minimum for it, electric current remains unbalanced from principle.Its current imbalance rate: Ki 〉=58%, Ki is up to 108% for the on-the-spot current imbalance rate of the operation that has.
These two shortcomings are unsurmountable from principle, and it is big that it takies apparent energy, and power factor is low, three-phase current unbalance, and it is few to exert oneself, and energy is wasted greatly, thereby it certainly will be replaced by other electroheat technology.
2. three phase full wave rectification becomes direct current to give hollow sucker rod-cable electric heating loop power supply, and its power factor brings up to 0.97.It is pure cable, hollow sucker rod resistance heating, and based on the cable heating, this just require cable heat-resisting 〉=240 ℃, to fill with conduction oil in the hollow sucker rod.This cable cost is refueled in the hollow sucker rod of a km bringing-up section up to 120,000 yuan/1km, also requires assurance oil not miss, and task difficulty is big.Conduction oil is in case leakage, and cable will dry combustion method, damage.
3. threephase cable places this cable in the hollow sucker rod directly by the three-phase main-frequency AC-powered, cable end piece three-phase short circuit, and this is the cable heating purely, power factor can reach more than 0.9.It also require cable heat-resisting 〉=240 ℃, oil-filled in the hollow sucker rod, so its problem is also identical with direct current supply person: cable is expensive, and the task difficulty of going into the well is big: require oil-proof being difficult to accomplish, leakage of oil is about to burn out cable.
4. with the full-wave rectification of three-phase main-frequency alternating current, be filtered into single-phase DC, with the electronics power transistor it is reverse into frequency 300-1000Hz again, the continuously adjustable single-phase medium frequency alternating current of power 0-60 (120) kW, the electric heating loop power supply of constituting for hollow sucker rod and single core insulation cable, it is based on the heating of hollow sucker rod electromagnetic induction, and the cable heating is what assist.Its power factor has reached 0.97, and three-phase load is a balance, and cable requires heat-resisting 120 ℃, needn't be oil-filled in the hollow sucker rod.It is best in single-core cable-hollow sucker rod electric heating loop electro-heat equipment, and cost is minimum.Among the engineers and technicians in the present technique field, this power supply is called for short work " hands over-straight-hand over " type inverter.
To sum up four kinds, common weakness is arranged all: if bringing-up section is 1000 meters, the hollow sucker rod will 1000 meters, and the hollow sucker rod is about 110 joints, and cable and it are isometric.This 110 joints move back and forth throughout the year.Dashing with per minute 8 is example, wants reciprocal 420.48 ten thousand times in 1 year, if stroke also is 8 meters/time, each connects and wants back and forth movement 420.48 myriametres last year.In addition, the hollow sucker rod also will generate heat, conducts heat, pump, and it has just become the weak link in the heat generating member, breaks easily, takes off, and causes cable-power supply to damage then.
5. at last a kind of is that tubing nipple is made the electric heating pipe nipple with electromagnetic induction principle, every joint 6-10 rice is long, power 6-10kW, a bite well needs by Energy distribution, be lowered to the 6-10 joint at interval, the electric heating internode is a plain tubing, one of supply line is an oil pipe, article one, be the electric heating pipe nipple that single-core cable is together in series, the oil pipe outside of its cable laying between the electric heating pipe nipple, its total length has lacked the electrothermal tube total length than the bringing-up section length overall: be about 60-100 rice, if bringing-up section is 1000 meters, each section of cable length overall is a 900-940 rice.Oil pipe is axially to wriggle in the oil pumping process, so cable also is easier to damage.System in Tahe Oilfield is by on probation in addition, and draw as drawing a conclusion: heating tube is the part of oil pipe tubing string, its load-bearing again of generating heat again, wriggle again, this causes the electrothermal tube external insulation to damage easily throughout the year, and the electrothermal tube cable connector is many, these also are the weak links of damaging easily, and the result is on probation unsuccessful.
The utility model content
The purpose of this utility model is: provide a kind of thickened oil recovery to respond to the heating well with oil pipe-electrosurgical trocar magnetic loop.This well adopts the consumer unit cable to connect oil pipe tubing string and sleeve pipe tubing string respectively, and makes them form electromagnetic induction heating loop with oil pipe-sleeve pipe Elecrical connector.The main conductive component of this oil well is oil pipe and sleeve pipe, and oil pipe and sleeve pipe also are conduction, excitation, magnetic conduction, eddy current kelvin effect heater simultaneously.This oil well is a kind of electromagnetic induction heating oil well.The down-hole is few does not adopt the hollow sucker rod with cable, overcomes the electric tracing that original thickened oil recovery uses, the hollow sucker rod in the electric wax removal technology breaks easily, takes off, the deficiency that causes cable power supply to damage then.
The purpose of this utility model is finished by following technical scheme: there is wellhead assembly on oil well ground, and oil well is underground surface pipe, and the sleeve pipe tubing string is arranged in the surface pipe, and the oil pipe tubing string is arranged in the sleeve pipe tubing string.The utility model special feature is: be connected with oil pipe-sleeve pipe Elecrical connector on the oil pipe of the dark 500-1500 rice of oil well.Oil pipe-sleeve pipe Elecrical connector as electric conductor, makes top oil pipe tubing string and sleeve pipe tubing string short circuit get up to form conduction, excitation, magnetic conductive loop between oil pipe tubing string and sleeve pipe tubing string, becomes electromagnetic induction heating tubing string.For solving the oil pipe tubing string and the Insulation Problems between the sleeve pipe tubing string of oil pipe-more than the sleeve pipe Elecrical connector, 1-3 the tubing centrilizer that insulate arranged on every oil pipe.In wellhead assembly,, the insulating oil pipe hanger is arranged in order to solve the Insulation Problems between wellhead for production and the oil pipe tubing string.For solving the Insulation Problems between oil pipe, sleeve pipe and the oil pumper, adopt the insulation oil pumping polish rod.Connect tubing nipple in the wellhead assembly bottom, tubing nipple connects the insulation tubing nipple down.The following oil pipe power supply pipe nipple that connects of insulation tubing nipple.Oil pipe power supply pipe nipple connects the oil pipe tubing string down.Oil pipe power supply wiring pipe nipple constitutes by connecting insulated cable at the tubing nipple outer wall, is drawn by the wellhead for production side opening, connects " AC-DC-AC " type inverter consumer unit for other one of its cable.Another power line of " AC-DC-AC " type inverter consumer unit is connected on the wellhead assembly.Power supply remains frequency 300-1000Hz, power 0-60 (120) kW continuously adjustable " AC-DC-AC " type inverter.
Insulation materials is a lot, as plastics, rubber, bakelite, nylon, glass fiber reinforced plastic.Nylon or glass-reinforced plastic material possess easy processing characteristic, adopt nylon material or glass-reinforced plastic material more satisfactory.As the oil pumping polish rod that insulate is the oil pumping polish rod that a kind of glass-reinforced plastic material is made.The insulating oil pipe hanger can adopt plain tubing hanger inside to carry out insulation processing with taper seat nylon insulating layer mode.Insulation tubing nipple and insulation centralizer have sale on market, be not described in detail.
What must be illustrated here is: the sleeve pipe tubing string in electric heating of the present utility model loop, it with the oil pipe tubing string between be that coaxial package is connected, their electric current transmitted are opposite sign but equal magnitude, the magnetic flux of electric current on oil pipe and sleeve pipe also is opposite sign but equal magnitude, the in succession oil pipe of opposite sign but equal magnitude of sleeve ring, electric current on the sleeve pipe and magnetic flux, its total magnetic flux is very little, oil pipe but only encircles the electric current and the magnetic flux of the oil pipe of ining succession, its result is exactly: measure with voltmeter, voltage drop on the oil pipe accounts for more than 97% of external power supply voltage, only occupies below 3% of external power supply voltage on the sleeve pipe; Observe with oscillograph: the voltage waveform on the oil pipe is almost consistent with the additional power source voltage waveform, and the spike of microsecond level only arranged at power supply square-wave waveform rising edge, falling edge on the sleeve pipe, like this, dropping on more than 97% on the oil pipe of additional power source power, and sleeve pipe just can be above 3% of power to the heat radiation on stratum, and this is the necessary condition of this electric heating tubing string energy usefulness.Otherwise just can not use the stratum heat dissipation capacity is excessive.
The beneficial effects of the utility model are: the hollow sucker rod conduction that the utility model need not break easily and take off, heating, conduct heat, and still with real core sucker rod oil pumping, it also need not be almost send with the isometric cable of bringing-up section, heating, so just removed the weak link in two existing electric heating loops, and replace the oil pipe tubing string, the sleeve pipe tubing string, oil pipe-sleeve pipe Elecrical connector and solution oil pipe and sleeve pipe, oil pipe and wellhead for production, the insulation oil pumping polish rod of Insulation Problems between oil pipe and the oil pumper, the insulating oil pipe hanger, the insulation tubing nipple, the insulation tubing centrilizer, increased reliability of operation, reduced accident rate, also just reduced the maintenance activity number of times, rate when having increased oil recovery.And that instead its cost adds cable sum total than hollow sucker rod is low, and power cabinet is also cheap than single phase industrial frequence power cabinet, and its power supply power factor can reach more than 0.97, and does not have the three-phase current unbalance problem.
Description of drawings
The application accompanying drawing is a structural representation of the present utility model.
Among the figure: 1. oil pumping polish rod, 2. insulating oil pipe hanger, 3. wellhead assembly insulate, 4. tubing nipple, 5. insulation tubing nipple, 6. oil pipe power supply pipe nipple, 7. insulation tubing centrilizer, 8. oil pipe tubing string, 9. oil pipe-sleeve pipe Elecrical connector, 10. sleeve pipe tubing string, 11. surface pipe, 12. consumer unit, 13. sleeve pipe electricity cables, 14. oil pipe electricity cables.
The specific embodiment
Embodiment: see accompanying drawing.Thickened oil recovery has wellhead assembly (3) with oil pipe-electrosurgical trocar magnetic loop induction heating well on oil well ground, oil well is underground, and diameter is arranged is 334 millimeters surface pipe (11), 400 meters of surface pipe (11) degree of depth.It is 139 millimeters sleeve pipe tubing string (10) that diameter is arranged in surface pipe (11), 2500 meters of sleeve pipe tubing string (10) degree of depth.It is 60 millimeters oil pipe tubing string (8) that diameter is arranged in the sleeve pipe tubing string (10), 1200 meters of oil pipe tubing string (8) degree of depth.On the dark 750 meters oil pipe tubing string (8) of oil well, be connected with oil pipe-sleeve pipe Elecrical connector (9).2 insulation tubing centrilizers (7) are arranged on every oil pipe.In wellhead assembly (3), insulating oil pipe hanger (2) is arranged.What insulating oil pipe hanger (2) adopted is that boll-weevil hanger inside has the taper seat nylon insulating layer of 3 millimeters thick to carry out insulation processing.The insulation oil pumping polish rod (1) that adopts glass-reinforced plastic material to make is connected with oil pumper.Connect plain tubing pipe nipple (4) in wellhead assembly (3) bottom, tubing nipple (4) connects insulation tubing nipple (5) down.The following oil pipe power supply pipe nipple (6) that connects of insulation tubing nipple (5).Oil pipe power supply pipe nipple (6) connects oil pipe tubing string (8) down.Oil pipe power supply pipe nipple (6) is to be welded with prap at common pipe nipple external surface, and connects insulated cable (14).An other end of oil pipe electricity cable (14) is drawn by wellhead for production (3) side opening, connects " AC-DC-AC " type inverter consumer unit (12).Another power line sleeve pipe electricity cable (13) of " AC-DC-AC " type inverter consumer unit is connected on the wellhead assembly (3).Power supply remains frequency 300-1000Hz, power 0-60 (120) kW continuously adjustable " AC-DC-AC " type inverter.
Claims (4)
1, a kind of thickened oil recovery is responded to the heating well with oil pipe-electrosurgical trocar magnetic loop, there is wellhead assembly (3) on ground, oil well is underground surface pipe (11), sleeve pipe tubing string (10) is arranged in the surface pipe (11), oil pipe tubing string (8) is arranged in the sleeve pipe tubing string (10), it is characterized in that: on the oil pipe of the dark 500-1500 rice of oil well, be connected with oil pipe-sleeve pipe Elecrical connector (9), 1-3 insulation tubing centrilizer (7) arranged on every oil pipe, in wellhead assembly (3), insulating oil pipe hanger (2) is arranged, insulation oil pumping polish rod (1) is connected with oil pumper, connect tubing nipple (4) in wellhead assembly (3) bottom, tubing nipple (4) connects insulation tubing nipple (5) down, insulation tubing nipple (5) connects oil pipe power supply pipe nipple (6) down, oil pipe power supply pipe nipple (6) connects oil pipe tubing string (8) down, oil pipe electricity cable (14) one ends connect oil pipe power supply pipe nipple (6), an other end of its cable is drawn by wellhead for production (3) side opening, connect " AC-DC-AC " type inverter consumer unit (12), another power line of " AC-DC-AC " type inverter consumer unit (12) is connected on the wellhead assembly (3).
2, thickened oil recovery as claimed in claim 1 is responded to the heating well with oil pipe-electrosurgical trocar magnetic loop, and it is characterized in that: the profile of insulating oil pipe hanger (2) is a plain tubing hanger profile, and there is taper seat nylon insulating layer inside.
3, thickened oil recovery as claimed in claim 1 is responded to the heating well with oil pipe-electrosurgical trocar magnetic loop, and it is characterized in that: insulation oil pumping polish rod (1) is the oil pumping polish rod that a kind of glass-reinforced plastic material is made.
4, thickened oil recovery as claimed in claim 1 is responded to the heating well with oil pipe-electrosurgical trocar magnetic loop, and it is characterized in that: power supply is frequency 300-1000Hz, power 0-60kW continuously adjustable " AC-DC-AC " type inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109909 CN2823550Y (en) | 2005-06-17 | 2005-06-17 | Oil pipe-sleeve electromagnetic loop induction heating well for extracting chick oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109909 CN2823550Y (en) | 2005-06-17 | 2005-06-17 | Oil pipe-sleeve electromagnetic loop induction heating well for extracting chick oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2823550Y true CN2823550Y (en) | 2006-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109909 Expired - Fee Related CN2823550Y (en) | 2005-06-17 | 2005-06-17 | Oil pipe-sleeve electromagnetic loop induction heating well for extracting chick oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2823550Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373096A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Electric and steam integrated steam injection system and steam injecting method thereof |
| CN105178913A (en) * | 2015-08-05 | 2015-12-23 | 李宾飞 | Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof |
-
2005
- 2005-06-17 CN CN 200520109909 patent/CN2823550Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373096A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Electric and steam integrated steam injection system and steam injecting method thereof |
| CN105178913A (en) * | 2015-08-05 | 2015-12-23 | 李宾飞 | Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BAIHENGDA OIL TECHNOLOGICAL CO.,LTD. Free format text: FORMER OWNER: ZHENG YINGZUO Effective date: 20080808 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080808 Address after: Beijing City, Chaoyang District Road No. 9 Fu Jing Long International Building C-18, zip code: 100107 Patentee after: Beijing Bright Petroleum Technology Co., Ltd. Address before: North China oil underground pump center of Hebei City, Renqiu Province, China: 062552 Patentee before: Zheng Yingzhuo |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061004 Termination date: 20140617 |
|
| EXPY | Termination of patent right or utility model |