CN2299938Y - Oil well heating device - Google Patents
Oil well heating device Download PDFInfo
- Publication number
- CN2299938Y CN2299938Y CN 97202124 CN97202124U CN2299938Y CN 2299938 Y CN2299938 Y CN 2299938Y CN 97202124 CN97202124 CN 97202124 CN 97202124 U CN97202124 U CN 97202124U CN 2299938 Y CN2299938 Y CN 2299938Y
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- pipe
- oil
- heating device
- oil well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 239000003129 oil well Substances 0.000 title claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 239000011152 fibreglass Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 28
- 238000007710 freezing Methods 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000252253 Catostomus Species 0.000 description 1
- 206010020608 Hypercoagulation Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003027 hypercoagulation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
A heating device for oil well features that an oil pipe is used as heat source to convert electric energy to heat energy, a single-phase transformer is used to regulate power output by SCR, and the oil pipe is connected to guide joint and insulated isolating pipe is connected to guide joint. The device has high heat energy utilization rate, and does not need to put in heating elements, thereby reducing the cost. It is suitable for the exploitation of wax-deposition well, high-freezing oil well and heavy oil well.
Description
The utility model relates to the oilfield exploitation electric heater unit.
" CNPC's digest " magazine, on May 13rd, 1992, version was delivered the article of " oil pipe electric heating wax control paraffin removal unit " on the 7th page, and its device is divided into ground and underground two parts: above ground portion has transformer, switch board and cable; The structure of under ground portion is the hollow circular cylinder of a partable, as heater, is installed in oil-pipe external wall by organic mica sheet of semiconductor thermoelectric film coating, is lowered in the sleeve pipe; The energising back generates heat by mica sheet and heats oil pipe and tube fluid, though also can play certain heat effect, but eventually because of adopting heat heating oil pipe and the tube fluid that heating produced, cause the cost height, manufacture complexity, because due to the megohmite insulant, heat utilization ratio is low, and hot components and parts are limit by temperature rise, and the quality of heating is limited, so limited applying of this method greatly.
The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and the device that provides a kind of electricity consumption directly to heat oil pipe, makes its thermal efficiency height, not the low cost heating devices limit of heated element temperature rise.
The purpose of this utility model reaches like this: transformer is a single-phase transformer, by the output of inverse parallel SCR control power, is provided with compensation condenser in the circuit in the switch board, and is in parallel with the oil pipe heater circuit; The oil pipe upper end connects conductive contact, and the conductive contact other end links to each other with the insulation isolated tube; Be connected by the tubing and casing contactor between oil pipe and the sleeve pipe, centralizer is installed on the oil pipe at interval; Electric energy is transferred on the oil pipe, utilizes oil pipe to do heat source body, directly heats oil pipe and liquid in pipe.
The purpose of this utility model can also reach like this:
Have screwed hole on the tube wall of conductive contact top, it is the cast device that matches with busbar.
The insulation isolated tube is a garden shape pipe, is made by insulation materials, as glass fiber reinforced plastic etc.
On oil pipe, at interval centralizer is installed, is made tubing and casing keep insulation.Centralizer is made by heatproof, insulation materials, as glass fiber reinforced plastic, polytetrafluoroethylene (PTFE) etc.
Directly connect oil pipe and sleeve pipe by the tubing and casing contactor, so that form current loop.Oil pipe is directly made heat source body, heating oil pipe and tube fluid.Its electric current by power supply through oil pipe and tubing and casing contactor to sleeve pipe, return power supply, form a loop, electric energy is converted into heat energy.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a general assembly schematic diagram of the present utility model;
Fig. 2 is an electrical schematic diagram of the present utility model;
Fig. 3 is an insulation isolated tube sectional drawing of the present utility model.
The utility model is further described below in conjunction with accompanying drawing embodiment.
As Fig. 1, the utility model is by single-phase transformer 1 power supply, and the single-phase transformer high-pressure side is connected with electrical network, the low tension of low-pressure side output 220V, 380V.The low-pressure side output is located in the switch board 2.Switch board has following function,
Adjusting heating power, control heating-up temperature, timing heating, line fault are protected automatically.
Also be provided with inverse parallel one-way SCR 3 and control circuit in the switch board, to regulate the oil pipe heating power.Also be provided with the capacitor in parallel 4,, improve the heating line energy, see Fig. 2 with the compensating circuit power factor with heater circuit.
Energy enters in the well by four-way junction of casing 6 through cable 5 after being exported by switch board, links to each other with busbar 7 upper ends, and its lower end is connected with conductive contact 8.Conductive contact is connected with oil pipe 9, and electric current produces heat after flowing through oil pipe.Arbitrary correct position of oil pipe is installed tubing and casing contactor 10, and its end connects oil pipe, and an end is connected with sleeve pipe 11, so that form the loop.
As Fig. 1, Fig. 3, insulation isolated tube 14 is connected on first oil pipe in well head lower end, and its material is a fiberglass insulating tube, and its two ends all are connected with joint 15,16, and joint 16 is connected in the tubing coupling 17, and the tubing coupling lower end connects conductive contact 8.The thickening of conductive contact one end tube wall, busbar 7 one ends are fixed on it with screw 19.
As Fig. 1. glassfiber insulation sucker rod 12 is connected common sucker rod 13 upper ends of polished rod 18 lower ends to the conductive contact 8, when rod string is run into tubing wall, also can guarantee the safety of wellhead equipment.Tubing centrilizer 20 is arranged between oil pipe 9 and the sleeve pipe 11, installs one every a segment distance, makes with insulating temperature resistant meterial, and the utility model is made with glass-reinforced plastic material, has guaranteed that the insulation between the tubing and casing is isolated.
The utility model is applicable to the recovery well of paraffin-troubled well, hypercoagulation oilfield, the recovery well of viscous crude field etc.
The utility model has following advantages compared with prior art:
1, heat utilization rate height. Because oil pipe directly is heating conductor, the heat that oil pipe produces directly adds The heat pipe inner fluid does not have spacer between pipe and the fluid, so the heat utilization rate height.
2, temperature rise. Because oil pipe is direct heater, its fusing point height is so temperature rise is unrestricted.
3, cost is low. Because not dropping into heater element, a pipe is dual-purpose, so reduced cost.
Claims (5)
1, a kind of Heating device for oil well comprises: transformer, switch board, cable, oil pipe, sleeve pipe.It is characterized in that described transformer is a single-phase transformer, the output of inverse parallel SCR control power in the switch board; The oil pipe upper end connects conductive contact, and the conductive contact other end links to each other with the insulation isolated tube; Be connected by the tubing and casing contactor between oil pipe and the sleeve pipe; Centralizer is installed on the oil pipe at interval; Do heat source body with oil pipe, directly heat oil pipe and tube fluid.
2, Heating device for oil well according to claim 1 is characterized in that described conductive contact is to have screwed hole on the top tube wall, the tubular unit that matches with busbar.
3, Heating device for oil well according to claim 1 is characterized in that said insulation isolated tube is a garden shape pipe, is made by insulation materials, as glass fiber reinforced plastic etc.
4, Heating device for oil well according to claim 1 and 2 is characterized in that on the oil pipe tubing centrilizer installed at interval, is made by heatproof insulating material, as glass fiber reinforced plastic etc.
5, Heating device for oil well according to claim 1 and 2 is characterized in that the tubing and casing contactor directly couples together oil pipe and sleeve pipe, forms current loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202124 CN2299938Y (en) | 1997-03-12 | 1997-03-12 | Oil well heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202124 CN2299938Y (en) | 1997-03-12 | 1997-03-12 | Oil well heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299938Y true CN2299938Y (en) | 1998-12-09 |
Family
ID=33923358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202124 Expired - Fee Related CN2299938Y (en) | 1997-03-12 | 1997-03-12 | Oil well heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299938Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958551A (en) * | 2010-04-09 | 2011-01-26 | 江阴市华能电热器材有限公司 | Power distribution device for improving active power of series electric tracer heating system |
-
1997
- 1997-03-12 CN CN 97202124 patent/CN2299938Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958551A (en) * | 2010-04-09 | 2011-01-26 | 江阴市华能电热器材有限公司 | Power distribution device for improving active power of series electric tracer heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |