CN1048311C - Oil-well self hot-washing wax-removing method and apparatus thereof - Google Patents
Oil-well self hot-washing wax-removing method and apparatus thereof Download PDFInfo
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- CN1048311C CN1048311C CN96116133A CN96116133A CN1048311C CN 1048311 C CN1048311 C CN 1048311C CN 96116133 A CN96116133 A CN 96116133A CN 96116133 A CN96116133 A CN 96116133A CN 1048311 C CN1048311 C CN 1048311C
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Abstract
The present invention relates to a self hot washing wax removal method and a device for an oil well, which belongs to the technical field of oil well washing in oil extraction. The wax removal method is characterized in that self producing liquid of the oil well is used as well washing liquid, oil well associated gas and casing tube gas are used as heating energy sources of the well washing liquid, special equipment for cars are used for heating the well washing liquid, then, the well washing liquid with high temperature is reinjected into the oil well to realize the hot washing wax removal, and the special equipment is mainly composed of a high efficient heating furnace, an oil and gas separating bag, an oil storage tank, a tank bottom heating furnace, an electric heating furnace. A circulation pump and a hot washing pump.
Description
The present invention relates to the cleaning method and the equipment of oil well in the oil exploitation, particularly is to utilize method and the device of oil-well self production fluid to hot cleanout and paraffin removal of oil well.
The paraffin removal from oil well method of using in oil exploitation at present has: regularly pump detection and workover wax removal method, wax removal car (or cementing truck) heat wash that method, steam injection heat are washed method, Circulation and Hot Oil Spray heat is washed method etc.Wherein, though it is better regularly to examine pump wax removal method wax removal effect, expense is too high, ten thousand yuan of the inferior expense 2-3 of general individual well, and each pump detection and workover influences oil well 2-3 days output, also pollutes easily and the destruction oil reservoir.Wax removal car (or cementing truck) is though that heat is washed method wax removal effect is also more satisfactory, and the personnel selection force-summing device is more, and on-the-spot bad adaptability is limited by the well site road conditions, the cost height, and benefit is low, also pollutes easily and destroys oil reservoir.Steam injection heat is washed method and only is applicable to shallow well, and thermal waste is too big, also damages oil reservoir easily.Though the Circulation and Hot Oil Spray heat method of washing can be protected oil reservoir effectively, the thermal efficiency is low too, and oilwell produced fluid amount is too high or too low all can not be used; especially the stripper well easy crude oil that takes place in winter solidifies plugging line accident; and be not easy to operation and control, duration of well flushing is longer, and is bigger to the oil well output influence.Above-mentioned prior art is asked for an interview " oil production technology principle " the 6th chapter second joint " wax control and wax removal ", " petroleum production engineering " the 4th chapter second joint " wax removal and wax control " that petroleum industry publishing house published in 81 years.
In view of the shortcoming and the weak point of prior art, purpose of the present invention just is to study and adopts a kind of more advanced oil-well self hot washing wax-clearing method, and for implementing this method development one cover isolated plant, overcomes the shortcoming and defect part of prior art.Can save artificial and equipment after the enforcement, reduce cost, shorten the clean-out service time, influence oil well output less, increase the benefit; And flexible, applicability is strong, and well washing effect is good, helps protecting oil reservoir.
Above-mentioned purpose is realized by following summary of the invention:
The oil-well self hot washing wax-clearing method is: utilize other oil well liquid-producing of oil-well self production fluid and measuring station as flushing fluid, utilize oil well associated gas and sleeve pipe gas heating energy source, by the temperature of vehicular isolated plant to flushing fluid heat temperature raising and maintenance requirement as flushing fluid.Then this high temperature flushing fluid is recycled into the oil pipe of oil well and the annular chamber together of sleeve pipe, the heat transferred oil well of flushing fluid improves temperature in wellbore, makes the paraffin attachment fusing of separating out on tube inner wall and the sucker rod, and along with flushing fluid returns out from well head.So circulation comes and goes and carries out hot-washing wax remover.
Above-mentioned hot-washing wax remover method is 75-90 ℃ to the temperature of the flushing fluid requirement maintenance of oil well re-injection, and well head returning fluid temperature maintenance is at 50-60 ℃, and lasting cycling hot is washed and finished the wax removal operation in 60-70 minute under this temperature.
The isolated plant that the oil-well self hot washing wax-clearing method is used is that this device of cover vehicular active flow range device comprises that mainly high pressure wired hose, efficient heating stove, Oil-gas Separation bag, oil storage tank, jar hearth furnace, circulation pump, heat washes pump, electric furnace, by-pass valve control, oil gas pipeline and cable.Be connected the ninth of the ten Heavenly Stems with high pressure wired hose oil between its liquid feeding end and the oil well.Feed tube is connected with the import of efficient heating stove through a valve.The efficient heating stove outlet is connected with the import of Oil-gas Separation bag.The oil export of Oil-gas Separation bag is connected with the oil storage tank oil inlet pipe through a valve.The oil storage tank outlet is washed pump inlet with pump inlet and heat and is connected.Circulating-pump outlet divides two-way, and one the tunnel is connected with the efficient heating stove import through valve, and another road is connected with the electric furnace import through valve.Heat is washed pump discharge and also is connected with the electric furnace import.The electric furnace outlet divides two-way, and a route high pressure wired hose is connected with the oil well casing valve, and another road turns back to liquid feeding end through valve.Oil-gas Separation contracts out the associated gas pipeline that comes and delivers to efficient heating stove and jar hearth furnace burner hearth burning.
The circulation pump of above-mentioned wax removal isolated plant is imported and exported, heat is washed the pump import and export, electric furnace is imported and exported and all adopted the flange connection, and other parts connection is welding.
As movable chassis, whole device all devices and parts all are arranged on the trailer above-mentioned wax removal isolated plant with tractor trailer or auto trailer.
The present invention and the contrast of existing skill have following major advantage:
The first, this method advanced person.Utilize oil-well self production fluid and measuring station well liquid as heat transfer medium, the thermal efficiency is higher, wax removal is effective, can not pollute and destroy oil reservoir, the operation of individual well wax removal accounts for the product time and shortened to 3-4 hour by 2-3 days, the production loss that the paraffin removal from oil well operation is caused significantly reduces, device therefor and manually also significantly reducing.
The second, this device flow scheme design is scientific and reasonable.Equipment is few, easily installs, and arranges compactness, occupies little space, and a trailer can load complete unit, and mobility is good, and applicability is strong, is not subject to the well site condition restriction flexibly with oil well is easy to connect, and operation easily; Flushing fluid heats up very fast, keeps temperature weighing apparatus constant volume easy to control, and wax removal is fast and effective.
The 3rd, economic benefit is remarkable especially.Adopt 1350 yuan of the every well of the hot washing method of wax removal car time comprehensive costs, adopt hot-washing wax remover method provided by the invention and install every well time comprehensive cost and have only 195.2 yuan, its indirect economic effect is also very remarkable, because applicability is strong, be not subject to well site ground condition restriction, overwhelming majority oil well can both in time obtain wax removal, can significantly reduce the well in operation time (2.8 ten thousand yuan of wax card well individual well operating cost average out to) that causes because of the wax card, also can save a large amount of electricity charge and dehydration of crude oil expense.Owing to adopt oil well from production fluid, guaranteed that oil reservoir is not contaminated, can reduce acidifying, fractured well, help the oil field and develop for a long time.
The 4th, social benefit is fine.Existing hot cleanout and paraffin removal of oil well method mostly is discharged into harmful well casing gas in the atmosphere, and this device can promptly have been saved the energy and protect environment again with the whole recovery of sleeve pipe gas and as heating the thermal source utilization.
Accompanying drawing is the oil-well self hot-washing wax remover active flow range device schematic diagram that the present invention adopts.
In conjunction with the accompanying drawings embodiments of the invention are described below:
In the accompanying drawing, the 1st, high pressure wired hose, the 2nd, efficient heating stove, the 3rd, Oil-gas Separation bag, the 4th, oil storage tank, the 5th, jar hearth furnace, the 6th, heat is washed pump, and the 7th, circulation pump, the 8th, electric furnace, the 9th, oil pipe line, the 10th, air pipe, the 11st, valve, the 12nd, flange, the 13rd, well recovery tree.The liquid feeding end of this device is connected with the oil well oil conduit valve with high pressure wired hose 1.The liquid outlet of electric furnace 8 links to each other with the oil well casing valve.
Its workflow is shown in the direction of arrow among the figure.At first, utilize outer bypass valve 11A that part sleeve pipe gas is put into main line; Open valve 11 again and put well liquid and enter this device and utilize sleeve pipe gas to light efficient heating stove 2, carry out heating the first time; Utilize Oil-gas Separation bag 3 isolated oil well associated gases to light jar hearth furnace 5 again, carry out the secondary temperature raising, ON cycle pump 7, and open valve 11C, the heat temperature raising that circulates, fluid temperatures reach more than 80 ℃ to the oil storage tank 4.Then, open internal bypass valve 11B, wash the tubing and casing ring cavity of pump 6 with circulation pump 7 and heat simultaneously, replenish intensification by electric furnace 8 simultaneously the big discharge capacity injection of high temperature flushing fluid oil well.Treat that liquid levels reduce to four/for the moment in the oil storage tank 4, Shuttoff Valve 11B uses heat instead and washes pump 6 independent heat and wash, and circulation pump 7 continues on for the circulation intensification.Continuous operation reaches 55 ℃ until well head returning fluid temperature no longer rises, and keeps the operation of 65 minutes end well-flushing wax removals.
Claims (5)
1, a kind of oil-well self hot washing wax-clearing method, it is characterized in that utilizing other oil well liquid-producing of oil-well self production fluid and measuring station as flushing fluid, utilize oil well associated gas and sleeve pipe gas heating energy source as flushing fluid, the special-purpose loading amount of logical vehicular is to the flushing fluid heat temperature raising, and the temperature of maintenance requirement, then this high temperature flushing fluid is recycled into annular chamber between the oil pipe of oil well and the sleeve pipe, make the paraffin attachment fusing on tube inner wall and the sucker rod, and along with flushing fluid returns out from well head, so circulation comes and goes and carries out hot-washing wax remover.
2, oil-well self hot washing wax-clearing method according to claim 1, it is characterized in that the temperature that the flushing fluid to the oil well re-injection requires to keep is 75-90 ℃, the temperature maintenance of well head returning fluid continues cycling hot at 50-60 ℃ and washes and finished the wax removal operation in 60,70 minutes under this temperature.
3, a kind of isolated plant of oil-well self hot washing wax-clearing method, it is a cover vehicular active flow range device, it is characterized in that this device comprises movable chassis, the high pressure wired hose, efficient heating stove, the Oil-gas Separation bag, oil storage tank, the jar hearth furnace, circulation pump, heat is washed pump, electric furnace, by-pass valve control, oil gas pipeline and cable, be connected the ninth of the ten Heavenly Stems with high pressure wired hose oil between its liquid feeding end and the oil well, feed tube is through the import of a valve and efficient heating stove downlink connection mutually, the efficient heating stove outlet is connected with the import of Oil-gas Separation bag, the oil export of oil gas bag is connected with the oil storage tank oil inlet pipe through a valve, the oil storage tank outlet is washed pump inlet with pump inlet and heat and is connected, circulating-pump outlet divides two-way, one the tunnel is connected with the efficient heating stove import through valve, another road is connected with the electric furnace import through valve, heat is washed pump discharge and also is connected with the electric furnace import, the electric furnace outlet divides two-way, one route high pressure wired hose is connected with the oil well casing valve, another road turns back to liquid feeding end through valve, and Oil-gas Separation contracts out the associated gas that comes and delivers to efficient heating stove from the sleeve pipe gas of oil well by the tracheae line burns with a jar hearth furnace burner hearth.
4, oil-well self hot washing wax-clearing method isolated plant according to claim 3 is characterized in that circulation pump is imported and exported, heat is washed the pump import and export, electric furnace is imported and exported and all adopted the flange connection, and other parts connection is welding.
5, oil-well self hot washing wax-clearing method isolated plant according to claim 3 is characterized in that with tractor trailer or auto trailer as movable chassis, whole device all devices and parts all are arranged on the trailer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96116133A CN1048311C (en) | 1996-12-16 | 1996-12-16 | Oil-well self hot-washing wax-removing method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96116133A CN1048311C (en) | 1996-12-16 | 1996-12-16 | Oil-well self hot-washing wax-removing method and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1185516A CN1185516A (en) | 1998-06-24 |
| CN1048311C true CN1048311C (en) | 2000-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN96116133A Expired - Fee Related CN1048311C (en) | 1996-12-16 | 1996-12-16 | Oil-well self hot-washing wax-removing method and apparatus thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443197C (en) * | 2001-09-13 | 2008-12-17 | 刘勇 | Automatic intellectual delermining and controlling method and apparatus for dewaxing procedure |
| CN108266158B (en) * | 2016-12-30 | 2020-07-14 | 中国石油天然气股份有限公司 | Device and method for hot washing well casing |
| CN106978989B (en) * | 2017-04-21 | 2024-10-01 | 玉人超导石油设备有限公司 | Environment-friendly cleaning vehicle for oil well operation |
| CN110043204A (en) * | 2018-01-15 | 2019-07-23 | 中国石油天然气股份有限公司 | Well washing device and oil production equipment |
| CN110094637B (en) * | 2018-01-31 | 2021-03-30 | 中国石油天然气股份有限公司 | Circulation paraffin removal device |
| CN108179988B (en) * | 2018-02-27 | 2024-07-09 | 李西宁 | Multifunctional heat storage and supply well washing vehicle |
| CN114233244B (en) * | 2021-12-29 | 2024-01-09 | 吉林石油装备技术工程服务有限公司 | Full-automatic intelligent paraffin removal device |
| CN115163006B (en) * | 2022-06-18 | 2024-03-08 | 大庆市旭元石油机械设备制造有限公司 | Oil well paraffin removal viscosity reduction remote metering matching equipment and method |
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|---|---|---|---|---|
| US4037662A (en) * | 1976-08-30 | 1977-07-26 | Leslie Bowling | Automated bailing apparatus in flexible combination for bailing shallow wells |
| US4751969A (en) * | 1985-11-14 | 1988-06-21 | Klaeger Joseph H | Apparatus and method for removing fluids from a well |
| US4789030A (en) * | 1986-08-20 | 1988-12-06 | Shell Oil Company | Production of hydrogen sulphide containing gas from underground formations |
| SU1691511A1 (en) * | 1989-03-13 | 1991-11-15 | Белорусский Научно-Исследовательский Геологоразведочный Институт | Method for controlling well deposits |
| CN2107523U (en) * | 1991-12-10 | 1992-06-17 | 河南石油勘探局规划设计院 | Composite well cleaning car |
| CN1077514A (en) * | 1992-04-14 | 1993-10-20 | 东北工学院 | The dewaxing method of oil country tubular good and device thereof |
-
1996
- 1996-12-16 CN CN96116133A patent/CN1048311C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4037662A (en) * | 1976-08-30 | 1977-07-26 | Leslie Bowling | Automated bailing apparatus in flexible combination for bailing shallow wells |
| US4751969A (en) * | 1985-11-14 | 1988-06-21 | Klaeger Joseph H | Apparatus and method for removing fluids from a well |
| US4789030A (en) * | 1986-08-20 | 1988-12-06 | Shell Oil Company | Production of hydrogen sulphide containing gas from underground formations |
| SU1691511A1 (en) * | 1989-03-13 | 1991-11-15 | Белорусский Научно-Исследовательский Геологоразведочный Институт | Method for controlling well deposits |
| CN2107523U (en) * | 1991-12-10 | 1992-06-17 | 河南石油勘探局规划设计院 | Composite well cleaning car |
| CN1077514A (en) * | 1992-04-14 | 1993-10-20 | 东北工学院 | The dewaxing method of oil country tubular good and device thereof |
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| Publication number | Publication date |
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| CN1185516A (en) | 1998-06-24 |
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