CN2871826Y - Self-circulating hot-washing wax remover of oil well having no harm to pay - Google Patents
Self-circulating hot-washing wax remover of oil well having no harm to pay Download PDFInfo
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- CN2871826Y CN2871826Y CN 200520108554 CN200520108554U CN2871826Y CN 2871826 Y CN2871826 Y CN 2871826Y CN 200520108554 CN200520108554 CN 200520108554 CN 200520108554 U CN200520108554 U CN 200520108554U CN 2871826 Y CN2871826 Y CN 2871826Y
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Abstract
The utility model discloses a device using associated gas separated from crude oil as fuel for oil well self circulation hot cleaning paraffin removal, e.g. a cyclic heating system comprising a mini paraffin heat transfer medium heating furnace using paraffin as heat transfer medium, a primary separator, a secondary separator, a well head christmas tree and a burner etc, the cyclic heating of oil water mixture is from oil well outlet, so temperature of oil pipe, fluid in oil pipe and sucker rod is increased gradually to reach the purpose of removing wax deposit on oil pipe wall, the utility model has the advantages of low cost, harmless, high efficiency, small volume, simple structure, easy operation and reliable performance etc, which comprises a onboard type and a trailer traction type.
Description
Affiliated technical field
The utility model relates to a kind of oil well paraffin removal device, particularly a kind of self-loopa hot-washing wax remover device that utilizes the natural gas heating.
Background technology
In oil extraction process and since the paraffin composition in the crude oil when temperature descends, can from crude oil, separate out, become solid be bonded on the tube inner wall and the sucker rod outer wall on, cause oil flow channel to diminish even stop up oil flow channel, make the oil well can't operate as normal.The main at present hot car washing well-flushing wax removal that adopts, there is the problem of two aspects in hot car washing well-flushing wax removal: there is the compatibility problem in one, often because of compatibility difference polluted reservoir between employed working solution and the in-place oil during hot car washing wax removal; Its two, discharge capacity is big during the hot car washing well-flushing, pressure is high, is easy to the down-hole pollutant is clamp-oned oil reservoir, and the stratum is damaged.When especially using the hot water well-flushing, because water column pressure is big, formation pressure is low, well-flushing water enters oil reservoir easily, causes the formation water lock, influences oil well output.For the volatility oil reservoir or for water-sensitive formation, use the hot car washing well-flushing especially, water will greatly damage oil relative permeability after entering oil reservoir, greatly reduce crude output.Adopt this covering device well-flushing can avoid injury fully to oil reservoir.
The utility model content
A kind of do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, and it comprises circulating heater and burner; Described burner utilization enters the associated gas of separating behind the primary separator from the oil pipe produced fluid through circulation heating inlet line and makes fuel, is supplied in the combustion of natural gas chamber and burns, the heating heat transfer medium; Described circulating heater mainly is made up of the circulation heating systems of heating furnace, coil pipe, circulation heating outlet line, well head production tree, oil pipe, sleeve pipe, annular space, primary separator, circulation heating oil pipeline-heating furnace-annular space-oil pipeline that inlet line constituted; The fluid that separate described primary separator bottom carries out interchange of heat by the coil pipe and the described high-temperature heat-transfer medium of heating furnace, by heating that described circulating heater is circulated continuously, heat oil pipe, oil pipe inner fluid and sucker rod in the circulating system, it is characterized in that circulation heating inlet line one end links to each other with oil connection, the other end links to each other with primary separator.
The associated gas (natural gas) that the utility model provides a kind of utilization to separate from oil pipe produced fluid (oil, water, natural gas) is made fuel, heating is the circulating heater of heat transfer medium with paraffin, the fluid (mainly being oil water mixture) that the eliminator bottom is separated carries out interchange of heat by body of heater coil pipe and high temperature paraffin, the oil water mixture that temperature has raise injects oil sets annular space through sleeve valve, thereby fluid in the heating oil pipe, oil pipe and sucker rod does not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir.So continuous circulation raises the fluid in the oil pipe, oil pipe and the temperature of sucker rod gradually, finally reaches the needed temperature of hot-washing wax remover, thoroughly cleans the pit shaft wax deposition.In addition, this device also can heat be washed surface line, removes the wax deposition of surface line inwall.Described a kind of oil well self-loopa hot-washing wax remover device that oil reservoir is not had injury, when bringing into use or after operation a period of time, if annular pressure is higher, for the operating pressure that reduces circulating heater with prevent that fluid from pouring in down a chimney into the stratum, can draw gas in the annular space from blow-down pipe, utilize emptying primary separator, emptying gas bag that natural gas is wherein separated, fall by torch burning.Described a kind of to oil reservoir do not have injury the not outer power of oil well self-loopa hot-washing wax remover device, need not the outer energy, the associated gas that utilization is separated from crude oil is made fuel, it have cost low, do not have advantages such as injury, efficient height, volume are little, simple in structure, easy to use, dependable performance, can be divided into two kinds of vehicular or trailer towing formulas.
The utility model has following effect:
1, be that the self-loopa hot-washing wax remover device of heat transfer medium utilizes the associated gas of separating from crude oil to make fuel when wax removal with paraffin, need not extra power, use cost is low, only need two artificial.
2, with paraffin be the self-loopa hot-washing wax remover device of heat transfer medium when wax removal, the temperature of oil pipe, oil pipe inner fluid and sucker rod rises gradually, falls into the situation that the shaft bottom influences output because of the too fast wax stone of temperature rise in the time of the hot car washing wax removal can not occurring.
3, be that the fluid that the self-loopa hot-washing wax remover device wax removal of heat transfer medium is used is this well fluids with paraffin, do not have the compatibility problem between working solution and the stratum, can polluted reservoir; And have the compatibility problem between working solution and the in-place oil during hot car washing wax removal, often because of compatibility difference polluted reservoir.
4, with paraffin be the self-loopa hot-washing wax remover device of heat transfer medium when wax removal, the wellbore fluids self-loopa does not have extraneous fluid to enter pit shaft, bottom pressure is less than strata pressure, the pollutant in the pit shaft can not enter the stratum, does not influence oil well output; And during the hot car washing well-flushing, discharge capacity is big, water column pressure is high, is easy to the down-hole pollutant is clamp-oned oil reservoir, and the stratum is damaged.During especially for volatility oil reservoir or water-sensitive formation employing washing well, well-flushing water enters oil reservoir easily, causes the formation water lock, influences oil well output.
5, be that the self-loopa hot-washing wax remover device of heat transfer medium adopts and earlier the natural gas in the oil well to be separated from oil water mixture with paraffin, and then the method for the fluid that comes out of heating primary separator bottom, when having overcome natural gas, oil water mixture and having heated together, because low long shortcoming heat time heating time that causes of natural gas heat transfer efficiency.
6, with paraffin be heat transfer medium self-loopa hot-washing wax remover device since the boiling point of paraffin greater than 350 ℃, oil water mixture can be heated to 150 ℃ even higher, flash-off of steam when high temperature fluid enters the low pressure oil sets annular space, can be full of annular space rapidly, increase heat exchange area, shorten duration of well flushing.
Description of drawings
Fig. 1 is the utility model does not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir a structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model specific embodiment is described in further detail.
Fig. 1 shows the utility model does not have the structure of the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, and in order to narrate conveniently, the applicant is divided into circulating heater 10, burner 20, emptying pressure relief device 30 with the utility model.
Described circulating heater 10 comprises casing joint 1, sleeve valve 2, well head production tree 3, tubing valve 4, oil connection 5, circulation heating inlet line 6, primary separator 7, primary separator lower part outlet valve 8, coil pipe 9, pressure-regulating valve 11, circulation heating outlet line 12, annular space 13, oil pipe 14, sleeve pipe 15, crude oil enter the station valve 16, heating furnace 17 again.
Described burner 20 comprises primary separator top outlet valve 21, second-stage separator 22, gas bag 23, tracheae line 24, natural gas nozzle valve 25, combustion of natural gas chamber 26, second-stage separator bottom tapping valve 27, gas bag bottom tapping valve 28, natural gas nozzle 29, heat transfer medium 41 again.
Described emptying pressure relief device 30 comprises blow-down pipe 31, air volume regulating valve 32, emptying primary separator 33, torch 34, air volume regulating valve 35, emptying gas bag 36, emptying gas bag bottom tapping valve 37, emptying primary separator bottom tapping valve 38 again.
Be connected with the interior annular space 13 of oil pipe 14, sleeve pipe 15 and sleeve pipe etc. on the described well head production tree 3.
Described casing joint 1 is connected on the well head production tree 3 by sleeve valve 2, and the coil pipe 9 in the described heating furnace 17 links to each other with above-mentioned casing joint 1 with circulation heating outlet line 12 by pressure-regulating valve 11, thereby forms hydronic exit portion pipeline; Well head production tree 3 links to each other with primary separator 7 by tubing valve 4, oil connection 5 and circulation heating inlet line 6, primary separator 7 couples together by the coil pipe 9 in primary separator lower part outlet valve 8 and circulation heating inlet line 6 and the heating furnace 17 again, thereby forms hydronic intake section pipeline.Described circulation heating outlet line 12 can be Steel Tube Special, also can be high-pressure hose, can also connect the import of oil connection 5 and primary separator 7 equally with high-pressure hose, connects blow-down pipe 31 with high-pressure hose.
Described heating furnace 17 is made up of furnace shell, heat transfer medium 41, coil pipe 9, combustion of natural gas chamber 26, natural gas nozzle 29, natural gas nozzle valve 25 and chimney etc.Coil pipe 9 is coiled within the furnace shell, and two openings are arranged: inlet links to each other with the bottom discharging tube of each eliminator, and outlet links to each other with circulation heating outlet line 12.Coil pipe 9 is immersed in the heat transfer medium 41, carries out interchange of heat with heat transfer medium 41, the oil water mixture of separating from primary separator 7 that heating is flowed in coil pipe 9.Heating furnace 17 is made by the body of heater special-purpose steel, and the length of coil pipe 9 is decided by the heat exchange power of needs.Remainder connects by mode shown in Figure 1, does not repeat them here.So just realized the circulating system of oil pipeline-heating furnace-oil sets annular space-oil pipeline.
Described primary separator 7, second-stage separator 22, emptying primary separator 33 have the function of gas-liquid separation, Oil, Water, Gas can be separated into oil water mixture and natural gas: oil water mixture enters coil pipe 9 heating, and natural gas is blended in burning in the combustion of natural gas chamber 26 by natural gas nozzle 29 and air; Described primary separator 7, second-stage separator 22, emptying primary separator 33 utilize between oil water mixture and the natural gas and exist density contrast to separate, separation method can be a gravitational separation process, also can be that gravity improves partition method such as swash plate, umbrella crown, can also be centrifugal separation.
Certainly, also can gas bag 23, emptying gas bag 36 be set respectively at second-stage separator 22, emptying primary separator 33 hypomeres.
The natural gas that is come out by separation such as primary separator 7, second-stage separator 22, gas bags 23 in combustion of natural gas chamber 26 mixes the back in the combustion of natural gas Indoor Combustion by natural gas nozzle valve 25 with air, make heat transfer medium 41 heating in the heating furnace 17, and circulation adds the coil pipe of pining for 9 and is immersed in the heat transfer medium 41, carries out interchange of heat with heat transfer medium 41.Described heat transfer medium 41 is boiling points greater than 350 ℃ paraffin, the oil water mixtures in the coil pipe 9 can be heated to the temperature that can produce flass.For the less demanding occasion of heating, heat transfer medium 41 can be water or deep fat.
With paraffin be heat transfer medium oil well self-loopa hot-washing wax remover device since the boiling point of paraffin greater than 350 ℃, fluid can be heated to 150 ℃ even higher, sometimes possible flash-off of steam when high temperature fluid enters annular space 13, be full of annular space rapidly, increase heat exchange area, shorten duration of well flushing.
Be that the oil well self-loopa hot-washing wax remover device of heat transfer medium overcome with paraffin be low, the limited shortcoming of heating temperature rise of heating furnace boiling point of heat transfer medium with water, significantly reduced the time of circulation hot-washing wax remover, improved effect.
Primary separator top outlet valve 21, second-stage separator 22, gas bag 23, tracheae line 24, natural gas nozzle valve 25, combustion of natural gas chamber 26, second-stage separator bottom tapping valve 27, gas bag bottom tapping valve 28, natural gas nozzle 29, heat transfer medium 41 have constituted fuel according to mode shown in Figure 1 and have supplied with and burner.
The effect of described emptying pressure relief device 30 be device come into operation preceding or use in, if oil sets annular space 13 pressure are higher, for the operating pressure that reduces circulating heater with prevent that fluid from pouring in down a chimney into the stratum, can draw fluid in the above-mentioned oil sets annular space 13 by blow-down pipe 31 and air volume regulating valve 32, utilize emptying primary separator 33, emptying gas bag 36 that natural gas is wherein separated, burn by torch 34.The effect of emptying pressure relief device 30 is operating pressures of reducing whole device, prevents that pressure from surpassing the equipment limit and preventing that fluid (oil, water, natural gas) from pouring in down a chimney into the stratum, can be the prerequisite of high temperature fluid flash distillation creation low pressure simultaneously.Heating furnace 17 igniting put into operation preceding and in heating process since volume expansion annular space 13 internal pressures raise, all can be by unnecessary natural gases in this device emptying combustion liner 15, to reduce pressure.
Blow-down pipe 31, air volume regulating valve 32, emptying primary separator 33, torch 34, air volume regulating valve 35, emptying gas bag 36, emptying gas bag bottom tapping valve 37, emptying primary separator bottom tapping valve 38 have constituted emptying pressure relief device 30 according to mode shown in Figure 1.
The utility model operating process is such: connect pipeline earlier, close the crude oil valve 16 that enters the station then, open tubing valve 4 and sleeve valve 2, under the effect of downhole pump, begin to realize the thermal cycle of oil pipe-heating furnace-oil jacket annular space one oil pipe, open the top outlet valve 21 of primary separator 7, observe the tolerance size, when air pressure reaches 0.1MPa, can light a fire, ignition operation is undertaken by the operational procedure of afterwards opening gas of lighting a fire earlier.In circulation heating process, the pressure of a primary separator 7 of per 30 minutes records, coil pipe 9 outlet temperatures of heating furnace 17, the inlet temperature of primary separator 7, and constantly observe the combustion case of heating furnace 17, coil pipe 9 outlet temperature situations according to heating furnace 17, utilize the air door on natural gas nozzle valve 25 and the natural gas nozzle 29, in time adjust the firepower size.The heat that 26 burnings of combustion of natural gas chamber produce is given the oil water mixture that flows through in the coil pipe 9 by 41 conduction of the mass transfer media in the heating furnace 17, warmed-up oil water mixture injects annular space 13 by circulation heating outlet line 12 again, with heating oil pipe, oil pipe inner fluid and sucker rod, finally reach the needed temperature of hot-washing wax remover, thoroughly clean the pit shaft wax deposition.
The utility model is owing to adopt the associated gas of separating from the oil pipe produced fluid to make the self-loopa hot-washing wax remover technology of fuel, can avoid directly gathering high-temperature gas (natural gas this moment heat temperature raising from sleeve pipe, during normal operation above 100 ℃), contain a large amount of volatile lighter hydrocarbons in the high-temperature gas, when temperature reduces, will become liquid phase, influence normal combustion.
The utility model adopts the mode that afterwards heats of separating earlier, promptly adopt and earlier the natural gas in the oil well is separated from oil water mixture, and then the mode of the fluid that comes out of heating primary separator bottom, when having overcome natural gas, oil water mixture and heating together, make long shortcoming heat time heating time owing to the natural gas heat transfer efficiency is low.
The utility model heating furnace adopts the paraffin with higher boiling characteristic as heat transfer medium, and high temperature paraffin heat transfer efficiency height, heat time heating time lack.The utility model be a kind of not outer power, need not the outer energy, what the associated gas that utilization is separated from crude oil was made fuel does not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it have cost low, do not have advantages such as injury, efficient height, volume are little, simple in structure, easy to use, dependable performance.
Though the utility model preferred implementation is provided with the clastotype of two-stage eliminator, the utility model also can be provided with the clastotype of three grades, level Four, Pyatyi etc. according to the oil well situation.Gas bag 23, emptying gas bag 36 not necessarily also can convert gas bag 23, emptying gas bag 36 to eliminator.Emptying primary separator 33 can be the same with the structure of second-stage separator 22, also can be not quite similar.
The oil well self-loopa hot-washing wax remover device that the utility model does not have an injury to oil reservoir is not limit by circulating heater 10, burner 20, emptying pressure relief device 30 and is formed, and according to the actual conditions of oil well, emptying pressure relief device 30 can be not included in wherein.
What the utility model did not have that the oil well self-loopa hot-washing wax remover device of injury emphasized to oil reservoir is that a kind of heat is washed the circulation wax removal technique, the connected mode between the limit equipment not, the engineers and technicians of this area can be according to spiritual essence of the present utility model, make various modifications that are equal to and replacement, and obtain different embodiments.
The utility model does not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, can be divided into two kinds of different modes of vehicular or trailer towing formula.
Claims (8)
1, a kind of do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, and it comprises circulating heater (10) and burner (20); Described burner (20) utilization enters the associated gas of separating behind the primary separator (7) from the oil pipe produced fluid through circulation heating inlet line (6) and makes fuel, is supplied in the combustion of natural gas chamber (26) and burns, heating heat transfer medium (41); The circulation heating systems of oil pipeline-heating furnace-annular space-oil pipeline that described circulating heater (10) mainly is made of heating furnace (17), coil pipe (9), circulation heating outlet line (12), well head production tree (3), oil pipe (14), sleeve pipe (15), annular space (13), primary separator (7), circulation heating inlet line (6) is formed; The fluid that separate described primary separator (7) bottom carries out interchange of heat by the coil pipe (9) of heating furnace (17) with described high-temperature heat-transfer medium (41), by heating that described circulating heater (10) is circulated continuously, heat oil pipe, oil pipe inner fluid and sucker rod in the circulating system, it is characterized in that circulation heating inlet line (6) one ends link to each other with oil connection (5), the other end links to each other with primary separator (7).
2, a kind of oil well self-loopa hot-washing wax remover device that oil reservoir is not had injury according to claim 1, also include emptying pressure relief device (30), this emptying pressure relief device (30) comprises blank pipe line (31), air volume regulating valve (32), emptying primary separator (33), emptying gas bag (36), it is characterized in that blow-down pipe (31) one ends link to each other with annular space (13), the other end links to each other with emptying primary separator (33), emptying gas bag (36) by air volume regulating valve (32).
3, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that on primary separator (7) the top outlet flow process second-stage separator (22) being installed also.
4, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that described heat transfer medium (41) is a paraffin.
5, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that described heat transfer medium (41) is a conduction oil.
6, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that described heat transfer medium (41) is a water.
7, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that this device is installed on the automobile.
8, according to claim 1 a kind ofly do not have the oil well self-loopa hot-washing wax remover device of injury to oil reservoir, it is characterized in that this device is installed on the trail-type chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108554 CN2871826Y (en) | 2005-06-03 | 2005-06-03 | Self-circulating hot-washing wax remover of oil well having no harm to pay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108554 CN2871826Y (en) | 2005-06-03 | 2005-06-03 | Self-circulating hot-washing wax remover of oil well having no harm to pay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871826Y true CN2871826Y (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520108554 Expired - Fee Related CN2871826Y (en) | 2005-06-03 | 2005-06-03 | Self-circulating hot-washing wax remover of oil well having no harm to pay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871826Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978989A (en) * | 2017-04-21 | 2017-07-25 | 玉人超导石油设备有限公司 | Oil well operation Environment protection cleaning car |
| CN111396023A (en) * | 2020-05-14 | 2020-07-10 | 伍红军 | Associated gas and liquid recycling device |
-
2005
- 2005-06-03 CN CN 200520108554 patent/CN2871826Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978989A (en) * | 2017-04-21 | 2017-07-25 | 玉人超导石油设备有限公司 | Oil well operation Environment protection cleaning car |
| CN111396023A (en) * | 2020-05-14 | 2020-07-10 | 伍红军 | Associated gas and liquid recycling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20110603 |