CN201007197Y - Vehicle mounted type oilfield superconducting automatically heat washing wax device - Google Patents
Vehicle mounted type oilfield superconducting automatically heat washing wax device Download PDFInfo
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- CN201007197Y CN201007197Y CNU2006201372712U CN200620137271U CN201007197Y CN 201007197 Y CN201007197 Y CN 201007197Y CN U2006201372712 U CNU2006201372712 U CN U2006201372712U CN 200620137271 U CN200620137271 U CN 200620137271U CN 201007197 Y CN201007197 Y CN 201007197Y
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Abstract
The utility model discloses a vehicle-carrying oil field superconduct automatic heated scrub paraffin removal device, comprising a power system, an electrical system, an exhaust system, a watering and dosing system, a control system, and a well mouth connecting system. The utility model is characterized in that the power system also includes a heat exchanger, the heat exchanger is arranged inside a vehicle hearth whose volume is increased, and the power system also comprises an inner pipe, an outer pipe packed outside of the inner pipe, and a branch pipe connected with the outer pipe. The utility model heats through adding the heat exchanger and realizes that the utility model can clean a high liquid quantity well which produces the liquid quantity more than 100 tons every day, and at the same time increases the volume of the hearth and advances the power of a burner based on adding the heat exchanger, thereby being more advantageous to the quick temperature elevating of the liquid in the hearth. And moreover, the utility model also solves the problem that the quantity of electricity is deficient in the remote operation and the long-time operation through employing a diesel generator to generate electricity.
Description
Technical field
The utility model relates to the industrial automation field, relates in particular to the automatic hot-washing wax remover device of a kind of vehicular oil field superconduction.
Background technology
The oil well paraffin removal device in existing oil field, mainly come wax removal by boiler car, this device is made of a boiler car, two water pump cars, a tank car, utilize boiler car that the water of water pump car is heated, water after will heating then is injected in the sleeve pipe of oil well, utilize the water of high temperature that wax is melted, thereby reach the purpose of wax removal.
The automatic hot-washing wax remover device of existing oil field superconduction, only be applicable to that every day production fluid amount is at 2 tons to 100 tons oil well, because the power of burner is little in the existing apparatus, do not reach desired heat, and the time ratio of the inner crude oil flow of burner hearth is shorter, heat runs off than very fast and many, therefore heat can not well be absorbed by crude oil, so this device can not be used to clean the well of big liquid measure, for the production fluid amount at the oil well more than 100 tons, if temperature can add, just do not have the purpose of hot-washing wax remover;
In addition, disposed two 100 amperes storage battery in the automatic hot-washing wax remover device of existing oil field superconduction, the electric weight of this storage battery is little, is unfavorable for long distance work and long working; And the chimney of this device is smaller, causes smoke evacuation not smooth, and multiplication of voltage raises, and the harmfulness that human body is caused is also big; Chimney in the existing apparatus is very high, when car travels at die Dorfstrasse or when car passes culvert, brings a lot of troubles to driving process;
The water tank of the automatic hot-washing wax remover device of existing oil field superconduction is very little, only can water about half cubic metre, and can not provide sufficient water source to sting the sump oil of washing on the many mouthfuls of oil pumpers, also be unfavorable for the oil well operation of outlying mountain area and lack of water desert area; And the easy wax deposition in the winter time time of the diesel oil in this device fuel tank makes the burner can't operate as normal, thereby has influenced the normal wash of oil well; And the content of the required control of this device is many, comprises temperature control, pressure control etc., makes operating process become more loaded down with trivial details, is unfavorable for operative employee's study and control;
Superconduction automatic hot-washing wax remover device in existing oil field does not have special contaminant recovery unit, therefore can only be emitted on sump oil, sewage etc. outdoor, serious contaminated environment; When running into rugged road conditions, desert, plateau or running into sleety weather, after having an accident, have no idea to save oneself.
The utility model content
The purpose of this utility model provides the automatic hot-washing wax remover device of a kind of vehicular oil field superconduction, to solve the problem that can't fully absorb heat in the prior art owing to crude oil in device, by increase heat interchanger in device, has realized being rapidly heated of crude oil.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
The automatic hot-washing wax remover device of a kind of vehicular oil field superconduction, comprise dynamical system, power system, exhaust system, add the water medicine system, control system and well head connected system, described dynamical system also comprises heat interchanger, this heat interchanger is positioned at the device burner hearth inside that volume increases, the outer outer tube of pipe in managing in comprising and being wrapped in, and the arm that connects outer tube.
The winding type that is shaped as of pipe in described, superconductor is filled between pipe and the outer tube and arm inside in this.
Described heat interchanger supports by pair of brackets, and this support is fixed on the automobile burner hearth bottom.
Described power system comprises the generator that is installed between automobile headstock and the car body, and/or is installed in transformer, inverter, the storage battery of car body inside, and/or is installed in the solar power plant at car body top.
Described exhaust system comprise be positioned at the car body top can automatic lifting chimney, this chimney diameter is not less than 300 millimeters.
The described water medicine system that adds comprises two water tanks, and the volume of each water tank is not less than half cubic metre.
Described control system adopts the FPGA control technology.
Described well head connected system comprises two eliminators, and described two eliminators link to each other respectively with this device and oil well and constitute the loop.
Configuration of automobiles in the described device 4 wheel driven device, and disposed capstan winch in the headstock lower front.
Described device also comprises recovery system, and the sump oil sewage recover in this recovery system is positioned at the car body below.
As seen the technical scheme that is provided by above the utility model the utlity model has following characteristics and advantage:
At first, the automatic hot-washing wax remover device of the vehicular oil field superconduction that the utility model provides, assist the coil pipe heating by increasing heat interchanger, realized to clean every day production fluid amount at the high liquid measure well more than 100 tons, while has increased combustion space and has strengthened the power of burner on the basis that increases heat interchanger, more help liquid being rapidly heated in burner hearth;
Secondly, the utility model adopts the diesel-driven generator generating, has solved the problem of electric weight deficiency in long distance work and long working, uses this generator to play and assist other construction corps's illumination, connects effects such as electric welding machine, has realized a tractor serves several purposes; The utility model also comprises solar energy equipment, can utilize solar poweredly on the ground of sun abundance, so both can both reduce the cost of well-flushing, can protect environment again; The utility model also is equipped with transformer, inverter and storage battery, but transformer changes the well site high voltage into 220V voltage that supply equipment uses, inverter and storage battery are used in combination, and when connecing the well site high pressure, can charge for storage battery, at power consumption hour, can use storage battery; The utility model adopts the chimney of automatic-lifting type, makes troubles can for equipment in transportation and in the construction way, owing to reduced multiplication of voltage in operation process, has guaranteed that therefore smoke evacuation is unimpeded simultaneously, helps the healthy of workman;
Once more, the automatic hot-washing wax remover device of the vehicular oil field superconduction that the utility model provides by increasing the volume of water tank, has solved thorn and has washed the sump oil on the many mouthfuls of oil pumpers, a series of problems such as oil well of cleaning outlying mountain area, lack of water desert; The utility model device has adopted PLC (FPGA control) technology simultaneously, makes the easier grasp operating technology of operator, has saved time and manpower;
At last, the utility model can in time reclaim waste water and waste oil by increasing sewage, sump oil recover, has effectively protected environment; The utility model has disposed the 4 wheel driven device, guarantees remote oil well operation and does not delay the construction of sleety weather, and by the configuration capstan winch, when accident occurring on the road of rainy day mire and on day wet and slippery road of snow, can save oneself with capstan winch.
Description of drawings
Fig. 1 is a left view of the present utility model;
Fig. 2 is a right view of the present utility model;
Fig. 3 is the utility model car body internal rear;
Fig. 4 is a burner hearth heart lateral view of the present utility model;
Fig. 5 is a burner hearth heart sectional view of the present utility model;
Fig. 6 A is the eliminator A sectional view of the utility model well head connected system;
Fig. 6 B is the eliminator B sectional view of the utility model well head connected system.
The specific embodiment
Core of the present utility model provides the automatic hot-washing wax remover device of a kind of vehicular oil field superconduction, comprise dynamical system, power system, exhaust system, add the water medicine system, control system and well head connected system, this dynamical system also comprises heat interchanger, this heat interchanger is positioned at automobile burner hearth inside, the outer outer tube of pipe by interior pipe and in being wrapped in, and the arm that connects outer tube forms is by at interior pipe and outer tube and connect the superconductor of filling in the arm between the outer tube, the liquid that flows through interior pipe is heated rapidly, thereby play the purpose of hot-washing wax remover.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.
Left view of the present utility model is as shown in Figure 1:
The utility model provides the oil field superconduction of a kind of vehicular automatic hot-washing wax remover device, this device is by automobile 1 carrying, utilize the dynamic power of automobile can drive the operate as normal of other each system in burner and this device, and the operation of each equipment and use, and carry this device unlike original trailer that uses, cause travel speed slow, incur loss through delay problems such as duration easily; A diesel-driven generator 2 and electric welding machine 3 are arranged between automobile head and car body, this generator can replace two 100 amperes storage battery in the original device, use the problem that this generator can solve long distance work and long working, and utilize this generator for electricity generation, also can save a transformer and an inverter, reduce the cost of this device, utilize this generator not only can be the device power supply, in travelling night, for automotive lighting, can also connect electric welding machine constructing operation such as is welded, builds, cuts in the well site; Outlet valve 4, chimney 5, solar power plant 63 and vehicle-mounted lightning protection 6 are arranged at the car body top, this chimney is compared greatly 300 millimeters of the chimney increasing diameters of original device, and this chimney adopts the automatic lifting technology, when when automobile left culvert and operation in the open air, running into lower antenna, chimney can be reduced automatically, under open environment, automatically chimney is raised to the height of nature again, has very big flexibility, this lightning protection can prevent effectively that automobile from being attacked by thunder and lightning in the process of thunderstorm weather running car; A water tank 8 is respectively arranged before and after car body inside, inject water by water tank water inlet 7, water tank is surveyed outward a high water tank meter 9 on the wall, one water pump 10 and a Draw off valve 11 are arranged at the car body bottom between two water tanks, after drawing water, water pump water is injected two water tanks by the water tank water inlet, when the needs water, open Draw off valve, water is discharged water tank, this water tank has increased a water tank again on the basis of an original water tank, and the volume of each water tank becomes original two times, solved owing to raw water box water deficiency is unfavorable for the perverse greasy dirt of washing on the many mouthfuls of oil pumpers, and the problem of the pipeline purging of remote petroleum pipeline; Also have a capstan winch 12 in the automobile lower head, when automobile faces a danger situation or accident, can save oneself by this capstan winch.
Right view of the present utility model is as shown in Figure 2:
This device is by automobile 1 carrying, utilize the dynamic power of automobile can drive the operate as normal of other each system in burner and this device, between automobile head and car body, a diesel-driven generator 2 and electric welding machine 3 arranged, this generator has replaced two 100 amperes storage battery in the original device, at the car body top outlet valve 4 is arranged, chimney 5 and vehicle-mounted lightning protection 6, in the car body inner front side tool box 13 is arranged, put the instrument that needs in the various hot-washing wax remover processes in this case, one staircase 14 is arranged in the middle of interior, this staircase makes about the staff can make things convenient in car body, and all kinds of devices are checked, Operation and maintenance; It below side body behind the staircase oil inlet pipe 15, by this oil inlet pipe oil is input to fuel tank oil-in 17, be injected in the fuel tank 16 by the fuel tank oil-in then, there is a tank gauge 18 in the fuel tank outside, a sewage sump oil recover 19 is arranged below the car body outside, sewage, sump oil that this recover is in use discharged the hot-washing wax remover device reclaim fast, and these sewage, sump oil are discharged outside the automobile, sewage and sump oil have been controlled in strictness, have effectively protected natural environment; Also have a capstan winch 12 in the automobile lower head, when automobile faces a danger situation or accident, can save oneself by this capstan winch.
The utility model car body internal rear is as shown in Figure 3:
Automobile top has chimney 5, there is electrical socket 20 below, switch board left side of car body inside, the top, left side is a left speaker, the top, right side is a right loudspeaker, on the switch board operation board, be aligned in sequence with inlet temperature table 23, inlet temperature table below is an inlet pressure gauge 24, inlet temperature table right side is a superconducting temperature table 25, superconducting temperature table below is a superconduction pressure meter 26, superconduction pressure meter below is a radio cassette player 27, superconducting temperature table right side is an outlet temperature table 28, outlet temperature table below is a delivery gauge 29, the delivery gauge below is a recorder 30, below the card of instrument board, from left to right be aligned in sequence with ammeter 31, battery main switch 32, Remote Control Interface 33, meter switch 34, burner switch 35, manually, automatic switch 36 and portable lamp switch 37 have an air-conditioning 38 on the car body inside right side wall, this switch board is heated automatically at original device, automatically adopted the PLC control technology on the basis of control and displays temperature, PLC controls by the current signal that sends 10 to 20 milliamperes, controls the flow of crude oil and the output voltage of generator etc., makes the process of whole operation simple, efficiently; There is a voltage stabilizing to regulate power supply 39 in the car body inside left, below power supply is regulated in this voltage stabilizing is a micro-wave oven 40, there is an instrument box 41 the micro-wave oven below, be used for loading the various instrument and meters of switch board control, be burner oil inlet pipe 42 between instrument box and the burner 43, this oil inlet pipe links to each other with burner, be used for to burner input fuel for this burner combustion, to provide origin of heat to this hot-washing wax remover device, this burner is compared with original burner, increase power, helped liquid being rapidly heated in burner hearth; In the car body inner right side is tool box 13, the car body bottom is equipped with two storage batterys 64, can be at power consumption hour without generator or device of solar generating generating, and only use two storage batterys to generate electricity, in the car body outer lower portion is a 4-wheel driven car wheel apparatus 44, under the situation that the slippery when wet automobile skids, preceding two wheels of this 4 wheel driven device also can rotate, and therefore can leave rapidly under the situation of skidding.
Burner hearth heart lateral view of the present utility model is as shown in Figure 4:
In the front side of car body inside is the burner hearth of the utility model hot-washing wax remover device, there is inverter 65 in the left side in burner hearth, in the inverter left side micro-wave oven 40 is arranged, transformer 66 is arranged below micro-wave oven, transformer changes the high voltage of well site 1140V, 660V, 380V 220V normal voltage supply equipment into and uses, and inverter and storage battery are used in combination, when the high voltage of external well site, can charge for storage battery.Oil inlet pipe 53 in the burner hearth extends to the back of car body inside by burner 43, on oil inlet pipe, from left to right be arranged in order an inlet temperature record sensor 45, an inlet pressure sensor 47, and an inlet temperature sensor 49, be used for writing down the pressure and temperature of oil inlet pipe import department; Flowline 54 in the burner hearth extends to the car body inside rear by burner, this flowline and oil inlet pipe are arranged in parallel, on flowline, from left to right be arranged in order an outlet temperature sensor 46, an outlet pressure sensor 48, and outlet temperature sensor 50, be used for writing down the pressure and temperature in oil inlet pipe exit, also have a flow control valve 51 between oil inlet pipe and flowline, this flow control valve is used for controlling the oil mass that flows through in oil inlet pipe and the flowline; A superconduction pressure sensor 52 is installed on burner, and this superconduction pressure sensor is used for testing the pressure in the burner, and this burner is compared with existing burner, has increased the power of burner, more helps liquid being rapidly heated in burner hearth; Burner hearth inside is the heat interchanger of this device, the interior pipe 56 of this heat interchanger is the winding shape, arrange to below, burner hearth inside from burner hearth inner and upper winding, interior pipe is the main pipeline that liquid passes through, liquid that it will be extracted out in well during through interior pipe after heating in burner hearth inside, liquid is transported in the oil well, the outside of pipe in outer tube 57 is wrapped in, be used for transmitting heat and store superconductor, link to each other by arm 58 between each outer tube, this arm has played the effect of reinforcing outer tube, and at arm internal reservoir part superconductor, make superconductor in the process of a circulation, bring into play self heat absorption, be heated, the performance of heat conduction, in whole heat interchanger passes through, between the outer tube and arm in superconductor, liquid is rapidly heated in interior pipe, then high-temperature fluid is injected in the well, by interior pipe, outer tube, the heat interchanger that arm is formed supports by support 59, be fixed in the burner hearth by this support simultaneously, at interior pipe, also have a superconducting temperature sensor 52 between the outer tube, be used for measuring the superconductor heated temperatures of following the tracks of between interior pipe and the outer tube; The heat that this device provides by burner combustion, the liquid Fast Heating in the heat interchanger, be rapidly heated in the process that high-temperature fluid is circulated in interior pipe, high-temperature fluid is in the process of circulation like this, the temperature of pit shaft is constantly raise, this heating circulation system is the long-pending wax corrosion gradually of tube inner wall and oil pumper beam hanger outer wall, thereby reaches the purpose of hot-washing wax remover.
Burner hearth heart sectional view of the present utility model is as shown in Figure 5:
Burner hearth inside is the sectional view of the heat interchanger of this device, liquid flows into from the oil-in 53 of this heat interchanger, oil-in links to each other with interior pipe 56, the interior pipe of this heat interchanger is arranged to below, burner hearth inside from burner hearth inner and upper winding, interior pipe is the main pipeline that liquid passes through, liquid that it will be extracted out in well during through interior pipe after heating in burner hearth inside, liquid is transported in the oil well, the outside of pipe in outer tube 57 is wrapped in, be used for transmitting heat and store superconductor, link to each other by arm 58 between each outer tube, this arm has played the effect of reinforcing outer tube, and at arm internal reservoir part superconductor, make superconductor in the process of a circulation, bring into play self heat absorption, be heated, the performance of heat conduction, in whole heat interchanger passes through, between the outer tube and arm in superconductor, liquid is rapidly heated in interior pipe, then high-temperature fluid is discharged from oil-out 54, on outer tube, also has a thermocouple 62, be used for measuring the temperature of superconductor, and this temperature is delivered on the superconducting temperature thermometer shows, be injected in the well, by interior pipe, outer tube, the heat interchanger that arm and thermocouple 62 are formed supports by support 59; Below oil-in, be connected with a blow-off pipe 60, this blow-off pipe is drained into sewage sump oil recover with sewage, sump oil, thereby the refuse in the course of work can be reclaimed fast, and can not make these sewage, sump oil discharges outside the automobile, effectively protected natural environment; Whole burner hearth is also surrounded by one deck insulation layer 61 all around simultaneously, is used for guaranteeing loosing outside the interior temperature of burner hearth, makes the interior temperature of burner hearth can keep high temperature for a long time.The heat that this device provides by burner combustion, the liquid Fast Heating in the heat interchanger, be rapidly heated in the process that high-temperature fluid is circulated in interior pipe, high-temperature fluid is in the process of circulation like this, the temperature of pit shaft is constantly raise, this heating circulation system is the long-pending wax corrosion gradually of tube inner wall and oil pumper beam hanger outer wall, thereby reaches the purpose of hot-washing wax remover.
Two eliminator sectional views of the utility model well head connected system are shown in Fig. 6 A and Fig. 6 B:
Fig. 6 A is the eliminator A sectional view of the utility model well head connected system, comprising going out opening connector 67, go out and go out opening connector screw thread 68 in the opening connector, the gate valve 69 of draining the oil, eliminator A is put and is pressed gate valve 70, put the eliminator A that presses gate valve to link to each other with eliminator A and put pressure pipe 71, and eliminator A snap joint 72; Fig. 6 B is the eliminator B sectional view of the utility model well head connected system, put pressure gate valve 73 comprising eliminator B, put the eliminator B that presses gate valve to link to each other with eliminator B and put pressure pipe 74, eliminator B snap joint 75, gs-oil separator 76, thimble connector screw thread 78 in the thimble connector 77, thimble connector, and oil return gate valve 79; The vehicle-mounted oil-in of hot-washing wax remover is connected with eliminator A by the outer connecting pipe line, connector A links to each other with the oil-out of oil well by going out opening connector, the vehicle-mounted oil-out of hot-washing wax remover is connected with the casing valve of oil well by eliminator B, and the utility model hot-washing wax remover device is by eliminator A and eliminator B and complete loop of oil well composition like this.
By above embodiment as seen, the automatic hot-washing wax remover device of a kind of vehicular oil field superconduction that the utility model provides, by liquid that oil pumper is extracted out in the well as circulatory mediator, and allow this circulatory mediator pass through heat interchanger, under superconduction and thermodynamic effect, speed with several times heats up, make high-temp liquid in the process of interior pipe circulation, the socket temperature constantly raises, thereby with the long-pending wax gradually corrosion of inside pipe wall with oil pumping beam hanger outer wall, the effect of having played hot-washing wax remover and having removed foul in the pit shaft, assurance oil well ordinary production.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. automatic hot-washing wax remover device of vehicular oil field superconduction, comprise dynamical system, power system, exhaust system, add the water medicine system, control system and well head connected system, it is characterized in that, described dynamical system also comprises heat interchanger, this heat interchanger is positioned at the device burner hearth inside that volume increases, the outer outer tube of pipe in managing in comprising and being wrapped in, and the arm that connects outer tube.
2. device according to claim 1 is characterized in that, the winding type that is shaped as of described interior pipe, and superconductor is filled between pipe and the outer tube and arm inside in this.
3. device according to claim 1 is characterized in that described heat interchanger supports by pair of brackets, and this support is fixed on the automobile burner hearth bottom.
4. device according to claim 1, it is characterized in that, described power system comprises the generator that is installed between automobile headstock and the car body, and/or is installed in transformer, inverter, the storage battery of car body inside, and/or is installed in the solar power plant at car body top.
5. device according to claim 1 is characterized in that, described exhaust system comprise be positioned at the car body top can automatic lifting chimney, this chimney diameter is not less than 300 millimeters.
6. device according to claim 1 is characterized in that, the described water medicine system that adds comprises two water tanks, and the volume of each water tank is not less than half cubic metre.
7. device according to claim 1 is characterized in that, described control system adopts the FPGA control technology.
8. device according to claim 1 is characterized in that, described well head connected system comprises two eliminators, and described two eliminators link to each other respectively with this device and oil well and constitute the loop.
9. device according to claim 1 is characterized in that, the configuration of automobiles in the described device 4 wheel driven device, and disposed capstan winch in the headstock lower front.
10. device according to claim 1 is characterized in that described device also comprises recovery system, and the sump oil sewage recover in this recovery system is positioned at the car body below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201372712U CN201007197Y (en) | 2006-09-28 | 2006-09-28 | Vehicle mounted type oilfield superconducting automatically heat washing wax device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201372712U CN201007197Y (en) | 2006-09-28 | 2006-09-28 | Vehicle mounted type oilfield superconducting automatically heat washing wax device |
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| Publication Number | Publication Date |
|---|---|
| CN201007197Y true CN201007197Y (en) | 2008-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201372712U Ceased CN201007197Y (en) | 2006-09-28 | 2006-09-28 | Vehicle mounted type oilfield superconducting automatically heat washing wax device |
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| CN (1) | CN201007197Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140899A (en) * | 2011-03-28 | 2011-08-03 | 通化石油化工机械制造有限责任公司 | Workover fluid recycling vehicle |
| CN102454385A (en) * | 2010-10-21 | 2012-05-16 | 赵云 | Application of tire oil to paraffin removal vehicle for oil well |
| CN101684725B (en) * | 2008-09-24 | 2013-04-03 | 北京名辉宝狮油田设备有限公司 | Control method and device of burner in oil-field hot-washing wax remover |
-
2006
- 2006-09-28 CN CNU2006201372712U patent/CN201007197Y/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684725B (en) * | 2008-09-24 | 2013-04-03 | 北京名辉宝狮油田设备有限公司 | Control method and device of burner in oil-field hot-washing wax remover |
| CN102454385A (en) * | 2010-10-21 | 2012-05-16 | 赵云 | Application of tire oil to paraffin removal vehicle for oil well |
| CN102140899A (en) * | 2011-03-28 | 2011-08-03 | 通化石油化工机械制造有限责任公司 | Workover fluid recycling vehicle |
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Free format text: CORRECT: CO-PATENTEE TO: ZHAI JUNMIN ^ |
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| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Zhai Mei Number: 03 Page: The title page Volume: 24 |
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| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Zhai Mei Number: 03 Volume: 24 |
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| C35 | Partial or whole invalidation of patent or utility model | ||
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Decision date of declaring invalidation: 20081023 Decision number of declaring invalidation: 12525 |