CN108049853A - Super heavy oil recovery method and super heavy oil recovery system - Google Patents
Super heavy oil recovery method and super heavy oil recovery system Download PDFInfo
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- CN108049853A CN108049853A CN201711284545.XA CN201711284545A CN108049853A CN 108049853 A CN108049853 A CN 108049853A CN 201711284545 A CN201711284545 A CN 201711284545A CN 108049853 A CN108049853 A CN 108049853A
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 38
- 238000011084 recovery Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000003085 diluting agent Substances 0.000 claims abstract description 57
- 239000003921 oil Substances 0.000 claims abstract description 57
- 238000004821 distillation Methods 0.000 claims abstract description 53
- 239000003129 oil well Substances 0.000 claims abstract description 44
- 238000004227 thermal cracking Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000004048 modification Effects 0.000 claims abstract description 13
- 238000012986 modification Methods 0.000 claims abstract description 13
- 239000000284 extract Substances 0.000 claims abstract description 9
- 238000007865 diluting Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 49
- 239000012530 fluid Substances 0.000 claims description 41
- 239000002737 fuel gas Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 238000005984 hydrogenation reaction Methods 0.000 claims description 2
- 238000006011 modification reaction Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 7
- 230000010354 integration Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G57/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one cracking process or refining process and at least one other conversion process
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of super heavy oil recovery method, including：By for diluting the shaft bottom of the diluent media of super-viscous oil injection oil well, viscosity reduction is diluted to super-viscous oil；The mixed liquor of oil well output is subjected to distillation processing；The diluent media that extracts in processing procedure will be distilled return to mix to oil well and carry out thick oil well bore viscosity reduction exploitation, and the viscous crude that will be extracted after diluent media carry out it is outer defeated after thermal cracking modification.In the oil well of the super-viscous oil oil-gas mining method and system by the way that diluent media to be cycled to injection super-viscous oil, then it is the mixed liquor of diluent media and super-viscous oil is mined again, and mixed liquor is separated and classification processing, it realizes while super heavy oil recovery is realized, it realizes and diluent media is recycled, exploited so as to fulfill the viscosity reducing of deep layer super-viscous oil.The super-viscous oil oil-gas mining method disclosure satisfy that lifting and the transportation integration to super-viscous oil, substantially increase production efficiency.The invention also discloses a kind of super-viscous oil oil and gas production systems.
Description
Technical field
The present invention relates to oil-gas mining technical field more particularly to a kind of super heavy oil recovery method and super heavy oil recovery systems
System.
Background technology
Strategic resource of the oil as country's operating, the operating national to one play very important effect.I
The manufacturing industry of state is flourishing, and industry and the operation of military equipment, is required to based on substantial amounts of petroleum resources.China's ultra-deep
Well heavy oil reserves are enriched, but it is big to exploit difficulty.
At present, many DP technologies are developed both at home and abroad, such as exploitation via steam injection technique, blending diluting oil technology, heating drop
Adhering process and the reducing viscosity by emulsifying technique of mixing efficient water soluble thinner etc..But due to regional difference, different oil field blocks
The technique of use is also different.Chinese deep-layer heavy crude yield accounts for 57% of total output or so, at present mainly with thin oil blending visbreaking work
Based on skill, but as the reduction of thin oil resource, the development of blending diluting oil technology are restricted, there is an urgent need for a kind of high-efficiency and economics
Thickened oil recovery technique.Thick-oil emulsified adhesive-reducing, electrical heating viscosity reduction technology have many advantages, such as that viscosity break ratio is high, improves pump efficiency, is easy to operate,
But since viscosity recovery is larger after breaking emulsion and dewatering and cooling, it is difficult to meet lifting, transportation integration, fail to obtain always a wide range of
Using.
The content of the invention
Have in view of that, the present invention provides a kind of high-efficiency and economic, can greatly improve the super heavy oil recovery method of recovery ratio with
And super heavy oil recovery system, to solve problems of the prior art.
According to the first aspect of the invention, a kind of super heavy oil recovery method is provided, including：
By for diluting the shaft bottom of the diluent media of super-viscous oil injection oil well, viscosity reduction is diluted to super-viscous oil；
The mixed liquor of oil well output is subjected to distillation processing；
The diluent media extracted in distillation processing procedure is returned to mix to oil well and carries out thick oil well bore viscosity reduction exploitation, and
To extract the viscous crude after the diluent media carry out it is outer defeated after thermal cracking modification.
Preferably, the mixed liquor by oil well output, which carries out distillation processing, includes：
The mixed liquor of oil well output is dehydrated first；
Dewatered mixed liquor is subjected to heat exchange heating with the diluent media extracted after distillation；
Mixed liquor after heat exchanging heating is preheated, and is preheated to preset temperature；
Mixed liquor after preheating is subjected to distillation reaction.
Preferably, carried out when the mixed liquor by oil well output distill processing using distillation equipment and described
And will extract when the viscous crude after the diluent media carries out thermal cracking modification and carried out using Visbreaking reactor,
It is fuel gas that top gas is generated at the top of the distillation equipment and the Visbreaking reactor, after the heat exchanging heating
Mixed liquor is preheated, and while being preheated to preset temperature is preheated using the fuel gas.
Preferably, the diluent media extracted in the processing procedure by distillation, which returns to mix to oil well, carries out thick oil well bore
Viscosity reduction exploitation includes：
The mixed liquor for distilling the diluent media and oil well output extracted is carried out heat exchange for the first time to cool down；
By the diluent media after first time heat exchange cooling and after thermal cracking modifies, outer defeated viscous crude carries out second
Heat exchange cooling.
Preferably, it is described will extract the viscous crude after the diluent media carry out after thermal cracking modification it is outer it is defeated including：
The viscous crude after the diluent media will be extracted and carry out heat exchange heating with the viscous crude after thermal cracking modifies；
Carry out the thermal cracking modification reaction of preset duration；
Wherein, the viscous crude after thermal cracking modification cools down simultaneously outer defeated after heat exchange, and the viscous crude after heat exchanging heating is heated.
Preferably, carried out when the mixed liquor by oil well output distill processing using distillation equipment and described
And will extract when the viscous crude after the diluent media carries out thermal cracking modification and carried out using Visbreaking reactor,
It is fuel gas that top gas is generated at the top of the distillation equipment and the Visbreaking reactor, described to extract the dilution
Viscous crude after medium is preheated when carrying out heat exchange heating with the viscous crude after thermal cracking modifies using the fuel gas.
Preferably, the preset duration is 30-90 minutes.
Preferably, diluent media is elected as at least one of in heavy diesel fuel, aromatic enriched fraction oil, naphthenic oil, hydrogenation tail oil.
According to the second aspect of the invention, a kind of super heavy oil recovery system is provided, including distillation equipment, Visbreaking reactor,
First Heat Exchanger, the second heat exchanger and the 3rd heat exchanger,
The arrival end of first group of fluid port of the First Heat Exchanger for being connected with production wellhead, the port of export with it is described
The entrance connection of distillation equipment,
The first outlet of the distillation equipment is arranged on described its upper part, the first outlet and the second of the First Heat Exchanger
The entrance connection of group fluid port, the outlet of second group of fluid port of the First Heat Exchanger for the 3rd heat exchanger
First group of fluid port entrance connection, the outlet of first group of fluid port of the 3rd heat exchanger with oil well for connecting
Logical, the second outlet of the distillation equipment is located at its bottom, the second outlet and first group of fluid end of second heat exchanger
The entrance connection of mouth, the outlet of first group of fluid port of second heat exchanger are connected with the entrance of the Visbreaking reactor,
On first outlet portion's side wall disposed thereon of the Visbreaking reactor, the first outlet and second group of stream of second heat exchanger
The entrance connection of body end mouth, second group exported with the 3rd heat exchanger of second group of fluid port of second heat exchanger
The entrance connection of fluid port, the outlet of second group of fluid port of the 3rd heat exchanger is for will be outside the viscous crude after viscosity reduction
It is defeated.
Preferably, the first heating furnace and the second heating furnace are further included,
The outlet of first group of fluid port of the First Heat Exchanger is through first heating furnace and the distillation equipment
Entrance connects,
The outlet of first group of fluid port of second heat exchanger is through second heating furnace and the Visbreaking reactor
Entrance connection,
3rd outlet of the distillation equipment is arranged on its top, and the second outlet of the Visbreaking reactor is arranged on its described top
Portion, the 3rd outlet of the distillation equipment and the second outlet of the Visbreaking reactor respectively with first heating furnace and the
The fuel supply opening of two heating furnaces is connected.
Super-viscous oil oil-gas mining method and system provided by the invention by diluent media by cycling injection super-viscous oil
It is then that the mixed liquor of diluent media and super-viscous oil is mined again in oil well, and mixed liquor is separated and classified
Processing, realizes while super heavy oil recovery is realized, realizes and diluent media is recycled, so as to fulfill deep layer super-viscous oil
Viscosity reducing exploitation.The super-viscous oil oil-gas mining method and system disclosure satisfy that lifting and the conveying integrated to super-viscous oil
Change, can realize widespread adoption, while low cost operation is realized, substantially increase production efficiency, improve super-viscous oil
Exploitation success rate and yield.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all of the figs, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the structure diagram of super heavy oil recovery system according to embodiments of the present invention.
Fig. 2 shows the flow diagram of super heavy oil recovery method according to embodiments of the present invention.
In figure：Medium reservoirs 1, mix dilute injection pump 2, production wellhead 3, flow string 4, drain sump 5, mixed liquor elevator pump 6,
First Heat Exchanger 7, the first heating furnace 8, distillation equipment 9, viscous crude elevator pump 10, the second heat exchanger 11, the second heating furnace 12, visbreaking
Reactor 13, oil well incorporation pipeline 14, oil well output pipeline 15, medium extracting pipeline 16, heavy oil transportation pipeline 17, visbreaking viscous crude
Feed-line 18, fuel gas feed-line 19, the 3rd heat exchanger 20.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention cannot be limited with this
It encloses.
Fig. 1 shows the structure diagram of super heavy oil recovery system according to embodiments of the present invention.As shown in Figure 1, this is super
Thickened oil recovery system, including distillation equipment 9, Visbreaking reactor 13, First Heat Exchanger 7, the second heat exchanger 11 and the 3rd heat exchanger
20.The arrival end of first group of fluid port of the First Heat Exchanger 7 with production wellhead 3 for connecting, the port of export and the steaming
Evaporate the entrance connection of equipment 9.The first outlet of the distillation equipment 9 is arranged on its upper part side, the first outlet and institute
It states and is connected through medium extracting pipeline 16 between the entrance of second group of fluid port of First Heat Exchanger 7, the First Heat Exchanger 7
Entrance of the outlet of second group of fluid port for first group of fluid port with the 3rd heat exchanger 20 connects, and the described 3rd
The outlet of first group of fluid port of heat exchanger 20 with oil well for connecting.The second outlet of the distillation equipment 9 is located at its bottom
Portion, the second outlet are connected with the entrance of first group of fluid port of second heat exchanger 11, second heat exchanger 11
The outlet of first group of fluid port is connected with the entrance of the Visbreaking reactor 13, the first outlet position of the Visbreaking reactor 13
To its upper on side wall, which connects with the entrance of second group of fluid port of second heat exchanger 11, and described
Between the entrance of the outlet of second group of fluid port of two heat exchangers 11 and second group of fluid port of the 3rd heat exchanger 20
It is connected through visbreaking heavy oil transportation pipeline 1817, the outlet of second group of fluid port of the 3rd heat exchanger 20 can be stored with oil product
Equipment, such as the connections such as oil tank, for will be defeated outside the viscous crude after viscosity reduction.
In the embodiment, distillation equipment 9 elects destilling tower or flash column as.It is connected between corresponding component through pipeline.
Further, which further includes the first heating furnace 8 and the second heating furnace 12, first heat exchange
The outlet of first group of fluid port of device 7 is connected through first heating furnace 8 with the entrance of the distillation equipment 9.Described second
The outlet of first group of fluid port of heat exchanger 11 is connected through second heating furnace 12 with the entrance of the Visbreaking reactor 13.
3rd outlet of the distillation equipment 9 is arranged on its top, and the 3rd outlet is through fuel gas feed-line 19 respectively with described first
The fuel supply opening of heating furnace and the second heating furnace is connected.The second outlet of the Visbreaking reactor 13 is arranged on its top, should
The second outlet is through the fuel supply opening phase with 8 and second heating furnace 12 of the first heating furnace respectively of fuel gas feed-line 19
Connection.
The super heavy oil recovery system, which further includes, to be still further comprised drain sump 5, mixed liquor elevator pump 6, medium reservoirs 1, mixes
Dilute injection pump 2 and viscous crude elevator pump 10.The entrance of drain sump 5 is connected through oil well output pipeline 15 with production wellhead 3, is exported and is mixed
The entrance for closing liquid elevator pump 6 is connected through pipeline, the outlet of mixed liquor elevator pump 6 and first group of fluid port of the first heat exchange pump
Entrance is connected through pipeline.The entrance of medium reservoirs 1 is connected with the outlet of second group of fluid port of First Heat Exchanger 7 through pipeline,
The outlet of second group of fluid port of First Heat Exchanger 7 is connected with mixing the entrance of dilute injection pump 2 through pipeline, mixes dilute injection pump 2
Outlet is penetrated into pipeline through piping shaft oil well and is connected with the entrance of first group of fluid port of the 3rd heat exchanger 20.Viscous crude elevator pump 10
Entrance connected with the second outlet of distillation equipment 9 through heavy oil transportation pipeline 17.
Fig. 2 shows the flow diagram of super heavy oil recovery method according to embodiments of the present invention.As shown in Fig. 2, in profit
Super heavy oil recovery method when being exploited with the super heavy oil recovery includes following three big steps：
S01), by for diluting the shaft bottom of the diluent media of super-viscous oil injection oil well, viscosity reduction is diluted to super-viscous oil；
S02 the mixed liquor of oil well output), is subjected to distillation processing；
S03), the diluent media extracted in distillation processing procedure is returned to mix to oil well progress thick oil well bore viscosity reduction and is opened
Adopt, and will extract the viscous crude after the diluent media carry out it is outer defeated after thermal cracking modification.
More detailed introduction is carried out to the three big step below:
The diluent media in medium reservoirs 1 is pressed 0.2 first：1-0.8:1 ratio is forced into 0 by mixing dilute injection pump 2
~15MPa penetrates into pipeline along oil well, after being heated to 50-70 DEG C at the 3rd heat exchanger 20, is delivered near production wellhead 3, from
The oil jacket annular space injection shaft bottom of production wellhead 3 mix with viscous crude after diluting viscosity reduction along the progress pit shaft of flow string 4 in shaft bottom from adopting
The production gate output ground of oil well mouth 3.
Diluent media is dehydrated along oil well output pipeline 15 into drain sump 5 to aqueous with viscous crude mixed liquor<0.5%,
Miscella is preheated to 100 DEG C -130 DEG C after the pressurization of mixed liquor elevator pump 6 in First Heat Exchanger 7 after dehydration, into the first heating
Stove 8 is heated, 330 DEG C -350 DEG C of heating temperature.Diluent media enters distillation equipment 9 with viscous crude miscella after heating, according to
Diluent media property, steam extracting diluent media where fraction section, by medium extract pipeline 16, and First Heat Exchanger 7 with
Diluent media viscous crude mixed liquor exchanges heat, its temperature is made to be reduced to less than 70 DEG C, and extracting pipeline 16 by medium enters medium
Storage tank 1, progress next round enter well dilution viscous crude and carry out mixing dilute viscosity reduction and recycling.
Heavy distillate after 9 bottom of distillation equipment extracting diluent media, is promoted in heavy oil transportation pipeline 17 by viscous crude
After 10 pressurization of pump, exchange heat in the second heat exchanger 11 with high temperature visbreaking viscous crude in visbreaking thick oil pipeline to 350 DEG C -370 DEG C,
Heavy distillate enters the second heating furnace 12 after heat exchange, 390 DEG C -410 DEG C is heated to, further by 13 bottom of thermal upgrading Visbreaking reactor
The entrance in portion enters reactor, reaction 30-90min is stopped in thermal upgrading Visbreaking reactor 13, by thermal upgrading Visbreaking reactor
13 tops enter visbreaking thick oil pipeline, are delivered to the second heat exchanger 11, with double distilled before thermal upgrading visbreaking in heavy oil transportation pipeline 17
Oil is divided to carry out heat exchange and is cooled to 350-370 DEG C, further the 3rd heat exchanger 20 is delivered to along visbreaking thick oil pipeline, with oil well output
Diluent media viscous crude mixed liquor carries out heat exchange and is cooled to 70-80 DEG C in pipeline 15, into outer oil transportation storage tank, prepares outer ship and sell and sells.
Distillation equipment 9,13 tower overhead gas of thermal upgrading Visbreaking reactor enter fuel gas feed-line 19 after collection, after distribution
It is thermal energy to be delivered to the first heating furnace 8 and the second heating furnace 12 respectively and carry out burning conversion as fuel gas.
Embodiment one and embodiment two is set forth below the super heavy oil recovery method is specifically described again.
Embodiment one：
It is 0.75 according to the mass ratio of diluent media and viscous crude as diluent media to select heavy diesel fuel:1, with 50 DEG C of viscosity
After the viscous crude of 530000mPa.s carries out mixing viscosity reduction, viscosity of mixed liquid is reduced to 2013mP.s, meets lifting and pipeline will
It asks.Obtained dilution viscous crude miscella is preheated to 109 DEG C after the pressurization of mixed liquor elevator pump 6 in First Heat Exchanger 7, into the
One heating furnace 8 is heated, 350 DEG C of heating temperature.Miscella enters distillation equipment 9 after heating, steams extracting diluent media institute
In 250-350 DEG C of fraction section, diluent media 123% is recycled, satisfaction carries out recycling requirement.9 bottom of distillation equipment extracts
Heavy distillate after diluent media, carries out heat exchange and temperature after heating reaches 390 DEG C, is stopped in thermal upgrading Visbreaking reactor 13
React 80min, into outer oil transportation storage tank before viscosity be 377mPa.s/70 DEG C, meet outer defeated requirement.
Embodiment two：
It is 0.95 according to diluent media and viscous crude mass ratio as diluent media to select naphthenic oil:1, with 50 DEG C of viscosity
After the viscous crude of 780000mPa.s carries out mixing viscosity reduction, viscosity of mixed liquid is reduced to 1835mP.s, meets lifting and pipeline will
It asks.Obtained dilution viscous crude miscella is preheated to 109 DEG C after the pressurization of mixed liquor elevator pump 6 in First Heat Exchanger 7, into the
One heating furnace 8 is heated, 350 DEG C of heating temperature.Miscella enters distillation equipment 9 after heating, steams extracting diluent media institute
In 160-350 DEG C of fraction section, diluent media 118% is recycled, satisfaction carries out recycling requirement.9 bottom of distillation equipment extracts
Heavy distillate after diluent media, carries out heat exchange and temperature after heating reaches 400 DEG C, is stopped in thermal upgrading Visbreaking reactor 13
React 60min, into outer oil transportation storage tank before viscosity be 532mPa.s/70 DEG C, meet outer defeated requirement.
In the oil well of the super-viscous oil oil-gas mining method and system by the way that diluent media to be cycled to injection super-viscous oil, then
The mixed liquor of diluent media and super-viscous oil is mined again, and mixed liquor is separated and classification processing, realize
While realizing super heavy oil recovery, realize and diluent media is recycled, so as to fulfill the viscosity reducing of deep layer super-viscous oil
Exploitation.The super-viscous oil oil-gas mining method and system disclosure satisfy that lifting and the transportation integration to super-viscous oil, can realize
Widespread adoption while low cost operation is realized, substantially increases production efficiency, improves the exploitation success rate of super-viscous oil
And yield.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that indicating or implying relatively important
Property or the implicit quantity for indicating indicated technical characteristic.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In this application, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme should all cover among the claim of the present invention and the scope of specification.Especially, as long as there is no knots
Structure conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The present invention does not limit to
In specific embodiment disclosed herein, but all technical solutions including falling within the scope of the appended claims.
Claims (10)
- A kind of 1. super heavy oil recovery method, which is characterized in that including：By for diluting the shaft bottom of the diluent media of super-viscous oil injection oil well, viscosity reduction is diluted to super-viscous oil；The mixed liquor of oil well output is subjected to distillation processing；The diluent media extracted in distillation processing procedure is returned to mix to oil well and carries out thick oil well bore viscosity reduction exploitation, and will be taken out Carry the viscous crude after the diluent media carry out it is outer defeated after thermal cracking modification.
- 2. super heavy oil recovery method according to claim 1, which is characterized in that the mixed liquor by oil well output carries out Distillation processing includes：The mixed liquor of oil well output is dehydrated first；Dewatered mixed liquor is subjected to heat exchange heating with the diluent media extracted after distillation；Mixed liquor after heat exchanging heating is preheated, and is preheated to preset temperature；Mixed liquor after preheating is subjected to distillation reaction.
- 3. super heavy oil recovery method according to claim 2, which is characterized in that the mixed liquor by oil well output carries out It is carried out during distillation processing using distillation equipment and described and carry out thermal cracking modification by the viscous crude after the diluent media is extracted Shi Caiyong Visbreaking reactors carry out,The top gas generated at the top of the distillation equipment and the Visbreaking reactor is fuel gas, mixed after the heat exchanging heating It is preheated when closing liquid to be preheated, and being preheated to preset temperature using the fuel gas.
- 4. super heavy oil recovery method according to claim 1, which is characterized in that extracted in the processing procedure by distillation The diluent media return to mix and carry out the exploitation of thick oil well bore viscosity reduction to oil well and include：The mixed liquor for distilling the diluent media and oil well output extracted is carried out heat exchange for the first time to cool down；By the diluent media after first time exchanges heat cooling and after thermal cracking modifies, outer defeated viscous crude exchange heat for the second time Cooling.
- 5. super heavy oil recovery method according to claim 1, which is characterized in that it is described will extract the diluent media after Viscous crude carry out after thermal cracking modification it is outer it is defeated including：The viscous crude after the diluent media will be extracted and carry out heat exchange heating with the viscous crude after thermal cracking modifies；Carry out the thermal cracking modification reaction of preset duration；Wherein, the viscous crude after thermal cracking modification cools down simultaneously outer defeated after heat exchange, and the viscous crude after heat exchanging heating is heated.
- 6. super heavy oil recovery method according to claim 5, which is characterized in that the mixed liquor by oil well output carries out It is carried out during distillation processing using distillation equipment and described and carry out thermal cracking modification by the viscous crude after the diluent media is extracted Shi Caiyong Visbreaking reactors carry out,The top gas generated at the top of the distillation equipment and the Visbreaking reactor is fuel gas, described to extract dilution Jie Viscous crude after matter is preheated when carrying out heat exchange heating with the viscous crude after thermal cracking modifies using the fuel gas.
- 7. super heavy oil recovery method according to claim 5, which is characterized in that the preset duration is 30-90 minutes.
- 8. according to claim 1-7 any one of them super heavy oil recovery methods, which is characterized in that diluent media elects weight bavin as It is at least one of in oil, aromatic enriched fraction oil, naphthenic oil, hydrogenation tail oil.
- 9. a kind of super heavy oil recovery system, which is characterized in that changed including distillation equipment, Visbreaking reactor, First Heat Exchanger, second Hot device and the 3rd heat exchanger,The arrival end of first group of fluid port of the First Heat Exchanger with production wellhead for connecting, the port of export and the distillation The entrance connection of equipment,The first outlet of the distillation equipment is arranged on its upper part side wall, and the of the first outlet and the First Heat Exchanger The entrance connection of two groups of fluid ports, the outlet of second group of fluid port of the First Heat Exchanger for the described 3rd heat exchange The entrance connection of first group of fluid port of device, the outlet of first group of fluid port of the 3rd heat exchanger with oil well for connecting Logical, the second outlet of the distillation equipment is located at its bottom, the second outlet and first group of fluid end of second heat exchanger The entrance connection of mouth, the outlet of first group of fluid port of second heat exchanger are connected with the entrance of the Visbreaking reactor, On first outlet portion's side wall disposed thereon of the Visbreaking reactor, the first outlet and second group of stream of second heat exchanger The entrance connection of body end mouth, second group exported with the 3rd heat exchanger of second group of fluid port of second heat exchanger The entrance connection of fluid port, the outlet of second group of fluid port of the 3rd heat exchanger is for will be outside the viscous crude after viscosity reduction It is defeated.
- 10. super heavy oil recovery system according to claim 9, which is characterized in that further include the first heating furnace and second and add Hot stove,Entrance of the outlet of first group of fluid port of the First Heat Exchanger through first heating furnace Yu the distillation equipment Connection,The outlet of first group of fluid port of second heat exchanger entering through second heating furnace and the Visbreaking reactor Mouth connection,3rd outlet of the distillation equipment is arranged on its top, and the 3rd outlet is heated respectively with first heating furnace and second The fuel supply opening of stove is connected,The second outlet of the Visbreaking reactor is arranged on its top, which adds respectively with first heating furnace and second The fuel supply opening of hot stove is connected.
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