CN101550821A - Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device - Google Patents
Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device Download PDFInfo
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- CN101550821A CN101550821A CNA2008100154964A CN200810015496A CN101550821A CN 101550821 A CN101550821 A CN 101550821A CN A2008100154964 A CNA2008100154964 A CN A2008100154964A CN 200810015496 A CN200810015496 A CN 200810015496A CN 101550821 A CN101550821 A CN 101550821A
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Abstract
The invention relates to an oil recovery method of closed circulation and viscosity breakback of hot oil in a viscous oil well and a device; the method comprises the following steps of: putting the crude oil into a heating system of a special device, adopting two sets of systems with burning of coal or gas or a single system with burning of coal or gas, being capable of adopting one well with one system or a plurality of wells with one system, and heating and injecting the crude oil into the well for closed circulation. The device comprises a heating system, a buffering tank, an injecting circulating system and an oil pumping system; the circulating system comprises a telescoped central pipe and a telescoped outer sleeve; the telescoped central pipe is sleeved into the telescoped outer pipe, an opening of the lower end thereof is a free end and the upper end thereof is connected with a circulating valve, an injecting pipe, a surface flow pipe, a boosting pump, the buffering tank and the outlet of the heating system in sequence; the lower end of the telescoped outer pipe is connected with the oil-well pump and the upper end thereof is connected with a polished rod, a drain pipe and the inlet of a heating system in sequence by a polished rod sealer; and the upper end of the circulating valve is connected with a polished rod eye of an oil pumping unit. The invention has the characteristics of good heat exchange performance, good viscosity breakback, high pump efficiency, and the like and is widely applied in viscous oil recovery technology.
Description
One, technical field
The present invention relates to heavy crude petroleum well oil production method and equipment, particularly a kind of heavy oil wells deep fat sealing and circulating viscosity reduction oil production method and device.
Two, background technology
At present, the following method and apparatus of the general employing of the exploitation of heavy crude petroleum: screw pump, electrical heating hollow rod and hollow stem water mixing exploitation.These method and apparatus are that strength is being contributed in the exploitation of oil-field thick-oil, but they also exist separately shortcoming or deficiency simultaneously: the 1. application of screw pump and development, be that cold the adopting of part low viscosity heavy oil wells obtained solving and development, but can't satisfy the exploitation of viscous crude, special super viscous crude.2. the application of electrical heating hollow rod makes high technology of coagulating the high-viscosity oil well obtain certain development, but still can not satisfy the needs of oil field development, particularly cost of production increases substantially, make some stripper wells because cost is too high, go into not pay, energy-output ratio is big, and every mouthful of well is by 800 meters calculating, more than the day power consumption 800KWh, day power consumption expense is more than 400 yuan.3. hollow stem water mixing thickened oil recovery technology, compare with electroheat technology, though reduced cost of production in a short time, but hollow stem produces, and the oil well production metering that water brings is inaccurate, crude water work of treatment amount strengthens, the problem such as pipe bar working environment variation of sneaking into of sewage, make the pipe bar easily cause burn into fouling, obstruction, eccentric wear aggravation, disconnected taking off, increase phenomenons such as adopting the communication system load and take place, influence the oil well ordinary production when serious; If use clear water, not only cause the serious waste of water resource, manage bar working environment variation equally, make the pipe bar easily cause the aggravation of burn into eccentric wear, disconnected taking off, increase phenomenons such as adopting the communication system load and take place; In case leakage enters the stratum, will seriously cause the pollution on stratum, thereby influence the oil well ordinary production simultaneously; Secondly because the intensification of water is limited, wellhead temperature generally is no more than 60 degree, and polished rod can be obstructed during oil well production, can not be normally descending, can not satisfy the exploitation needs of special super viscous crude field far away.
Three, summary of the invention
The purpose of this invention is to provide a kind of heavy oil wells deep fat sealing and circulating viscosity reduction oil production method, adopt the conduction oil sealing and circulating, reduce wellbore oil viscosity effectively, easily examine the shortcoming or the deficiency of producing and overcoming or avoiding existing in the above-mentioned prior art.
Heavy oil wells deep fat sealing and circulating viscosity reduction oil production method of the present invention, comprise heating in crude oil and be injected in the well, it is characterized in that described heating in crude oil and being injected in the well is to carry out in isolated plant, heating system in this device adopts fire coal or combustion gas two cover systems or fire coal or coal gas triangular web, can adopt a well one system or many wells one system, described heating in crude oil injects into well for sealing and circulating and carries out.
Wherein, it is to inject from the intussusception central tube of special-purpose device that described heating in crude oil injects into well sealing and circulating, the annular space outflow between intussusception central tube and intussusception outer tube.The plasma panel modified organic polymer material that described intussusception central tube is an excellent heat insulating performance is made.
Another object of the present invention provides a kind of heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil, adopts the continuous circulating device of airtight binary channels.
Heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil of the present invention, comprise heating system, surge tank, booster pump, the ground flow pipeline, ascending pipe and discharge pipe, circulating valve, polished rod sealer, the intussusception central tube, the intussusception overcoat, polished rod eye, oil pumper, oil well pump and pumping pipe string, described intussusception central tube is inserted in the intussusception outer tube, the lower end is uncovered to be free end, upper end and circulating valve, ascending pipe, the ground flow pipe, booster pump, outlet is connected surge tank in turn with heating system, intussusception outer tube lower end is connected with oil well pump, the upper end is by production wellhead and polished rod sealer, discharge pipe, heating system, ascending pipe is connected in turn, and described circulating valve upper end is connected with the oil pumper polished rod eye.
Wherein, described intussusception central tube is adiabatic nonmetal continuous tubular structure.Described intussusception central tube external surface is equipped with the very little aviation insulation material layer of coefficient of thermal conductivity.Described heating system is fire coal or gas fired-boiler or heating furnace.Described intussusception outer tube is positioned at one section double as polished rod at production wellhead place.Described discharge pipe and ascending pipe are hose construction, with moving up and down up and down of polished rod.
The present invention has following advantage compared with prior art:
1, original oil well electrical heating hollow stem need not be changed, and has avoided the waste of hollow stem.
2, removing continuous tubule does not need operation, has saved the expenditure of operating cost.
3, less to the influence of oil pumper load, 1000 meters continuous tubule weight are no more than 230 kilograms, and are little to the influence of oil pumper load;
4, continuously tubule can be high temperature resistant, low temperature resistant, operating temperature range-196 ℃--and 250 ℃.
5, have excellent chemical stability, corrosion-resistant, energy strong alkali-acid resistance, water and various organic solvent, anti-aging, have aging life-span best in the nonmetals.
The technical indicator of tubule is as follows continuously:
| Line coefficient of expansion (perpendicular to 1/ ℃ of pressure direction) | Hot strength 〉= | Yield strength | Elongation at break 〉= | Compressive strength 5% |
| 20～200℃ | 27.6Mpa | ≥620Mpa | 238％ | 12.9Mpa |
| 12.8×10 -5 | Poisson's ratio (25 ℃) | Specification | Pressure | Coefficient of thermal conductivity W/m. ℃ |
| 0.40 | Φ18×14mm | -0.1～6.4Mpa | 0.251 |
Four, description of drawings
Accompanying drawing is a kind of structural representation of apparatus of the present invention,
Five, the specific embodiment
Heavy oil wells deep fat sealing and circulating viscosity reduction oil production method, comprise heating in crude oil and be injected in the well, heating in crude oil and to be injected in the well be to carry out in isolated plant, heating system in this device adopts fire coal or combustion gas two cover systems or fire coal or coal gas triangular web, can adopt a well one system or many wells one system, described heating in crude oil injects into well for sealing and circulating and carries out.
Wherein, to inject into well sealing and circulating be that intussusception central tube 10 from special-purpose device injects the annular space outflow between intussusception central tube 10 and intussusception outer tube 13 to heating in crude oil.Intussusception central tube 10 is made for the plasma panel modified organic polymer material of excellent heat insulating performance.
A kind of heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil, comprise heating system 1, surge tank 2, booster pump 3, ground flow pipeline 4, ascending pipe 5 and discharge pipe 15, circulating valve 8, polished rod sealer 16, intussusception central tube 10, intussusception overcoat 13, polished rod eye 7, oil pumper 6, oil well pump 14 and pumping pipe string 12, intussusception central tube 10 is inserted in the intussusception outer tube 13, the lower end is uncovered to be free end, upper end and circulating valve 8, ascending pipe, ground flow pipe 4, booster pump 3, surge tank 2 and heating system 1, ascending pipe 5 is connected in turn, intussusception outer tube 13 (double as polished rod) lower end is connected with oil well pump 14, the upper end is by production wellhead 9 and polished rod sealer 16 and discharge pipe 15, heating system input pipe 5 is connected in turn, and circulating valve 8 upper ends are connected with oil pumper 6 polished rod eyes 7.
Intussusception central tube 10 is adiabatic nonmetal continuous tubular structure.Intussusception central tube 10 external surfaces are equipped with the very little aviation insulation material layer 11 of coefficient of thermal conductivity.Heating system 1 is fire coal or gas fired-boiler or heating furnace.Intussusception outer tube 13 is positioned at one section double as polished rod at production wellhead 9 places.Input pipe 5 and efferent duct 15 are hose construction, can moving up and down and move up and down with polished rod 13.
During use, conduction oil after the heating from heater 1 through surge tank 2, booster pump 3, ground flow pipe 4 and inject ascending pipe 5, enter behind the intussusception central tube 10 again that the annular space between intussusception central tube 10 and outer tube 13 is back in the heater 1, advance the next round circulation again.Carry out so continuously, the oil pipe from the oil well pump 14 of the crude oil in the well flows to well head, constantly carries out interchange of heat with conduction oil, thus oily temperature rise, and viscosity descends greatly, improves pump efficiency simultaneously, increases output.
Claims (9)
1, a kind of heavy oil wells deep fat sealing and circulating viscosity reduction oil production method, comprise heating in crude oil and be injected in the well, it is characterized in that described heating in crude oil and being injected in the well is to carry out in isolated plant, heating system in this device adopts fire coal or combustion gas two cover systems or fire coal or coal gas triangular web, can adopt a well one system or many wells one system, described heating in crude oil injects into well for sealing and circulating and carries out.
2, heavy oil wells deep fat sealing and circulating viscosity reduction oil production method according to claim 1, it is characterized in that it is to inject from the intussusception central tube of special-purpose device that described heating in crude oil injects into well sealing and circulating, the annular space outflow between intussusception central tube and intussusception outer tube.
3, heavy oil wells deep fat sealing and circulating viscosity reduction oil production method according to claim 2 is characterized in that the plasma panel modified organic polymer material that described intussusception central tube is an excellent heat insulating performance makes.
4, a kind of heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil, comprise heating system, surge tank, booster pump, the ground flow pipeline, ascending pipe and discharge pipe, circulating valve, polished rod sealer, the intussusception central tube, the intussusception overcoat, polished rod eye, oil pumper, oil well pump and pumping pipe string, it is characterized in that described intussusception central tube is inserted in the intussusception outer tube, the lower end is uncovered to be free end, upper end and circulating valve, ascending pipe, the ground flow pipe, booster pump, outlet is connected surge tank in turn with heating system, intussusception outer tube lower end is connected with oil well pump, the upper end is by production wellhead and polished rod sealer, discharge pipe, the heating system ascending pipe is connected in turn, and described circulating valve upper end is connected with the oil pumper polished rod eye.
5, heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil according to claim 1 according to claim 4 is characterized in that described intussusception central tube is adiabatic nonmetal continuous tubular structure.
6, according to claim 4 or 5 described heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil, it is characterized in that described intussusception central tube external surface is equipped with the very little aviation insulation material layer of coefficient of thermal conductivity.
7, heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil according to claim 4 is characterized in that described heating system is fire coal or gas fired-boiler or heating furnace.
8, heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil according to claim 1, described intussusception outer tube is positioned at one section double as polished rod at production wellhead place.
9, heavy oil wells deep fat sealing and circulating viscosity reduction extracting device of oil according to claim 1 is characterized in that described discharge pipe and ascending pipe are hose construction, with moving up and down up and down of polished rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100154964A CN101550821A (en) | 2008-03-31 | 2008-03-31 | Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100154964A CN101550821A (en) | 2008-03-31 | 2008-03-31 | Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device |
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| CN101550821A true CN101550821A (en) | 2009-10-07 |
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| CNA2008100154964A Pending CN101550821A (en) | 2008-03-31 | 2008-03-31 | Oil recovery method of closed circulation and viscosity breakback of hot oil in viscous oil well and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352744A (en) * | 2011-10-31 | 2012-02-15 | 徐龙欣 | Circulating hot water heavy oil thermal recovery system for ultra-deep well and process thereof |
| CN103334717A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Oil pumping device for oil field rod pumped well |
| CN107939339A (en) * | 2018-01-12 | 2018-04-20 | 吉林爱科德科技有限公司 | Oil field special-purpose air source high temperature device for removing paraffin and washing well and using method |
| CN110005366A (en) * | 2018-01-05 | 2019-07-12 | 中国石油天然气股份有限公司 | A method of liquid is injected to rod-pumped well |
| CN110388206A (en) * | 2019-06-13 | 2019-10-29 | 太原理工大学 | A kind of method and apparatus that coal column is left in the residual exploiting field of plasma uplink fracturing |
| CN112761580A (en) * | 2019-11-06 | 2021-05-07 | 大庆油田有限责任公司 | Water-mixing and wax-proofing method for prefabricated small oil pipe in rodless lifting oil well shaft |
-
2008
- 2008-03-31 CN CNA2008100154964A patent/CN101550821A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352744A (en) * | 2011-10-31 | 2012-02-15 | 徐龙欣 | Circulating hot water heavy oil thermal recovery system for ultra-deep well and process thereof |
| CN103334717A (en) * | 2013-06-08 | 2013-10-02 | 中国石油天然气股份有限公司 | Oil pumping device for oil field rod pumped well |
| CN110005366A (en) * | 2018-01-05 | 2019-07-12 | 中国石油天然气股份有限公司 | A method of liquid is injected to rod-pumped well |
| CN110005366B (en) * | 2018-01-05 | 2021-07-02 | 中国石油天然气股份有限公司 | Method for injecting liquid into oil pumping well |
| CN107939339A (en) * | 2018-01-12 | 2018-04-20 | 吉林爱科德科技有限公司 | Oil field special-purpose air source high temperature device for removing paraffin and washing well and using method |
| CN107939339B (en) * | 2018-01-12 | 2024-05-31 | 松原市恒丰科技有限公司 | High-temperature paraffin removal well cleaning device for air source special for oil field and adoption method |
| CN110388206A (en) * | 2019-06-13 | 2019-10-29 | 太原理工大学 | A kind of method and apparatus that coal column is left in the residual exploiting field of plasma uplink fracturing |
| CN110388206B (en) * | 2019-06-13 | 2020-11-27 | 太原理工大学 | Method and device for plasma uplink fracturing of residual coal pillar in residual mining area |
| CN112761580A (en) * | 2019-11-06 | 2021-05-07 | 大庆油田有限责任公司 | Water-mixing and wax-proofing method for prefabricated small oil pipe in rodless lifting oil well shaft |
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Application publication date: 20091007 |