CN106764429A - The continuous closed gathering system of individual well branch line ring-type ground crude oil and the continuous closed gathering method of crude oil - Google Patents
The continuous closed gathering system of individual well branch line ring-type ground crude oil and the continuous closed gathering method of crude oil Download PDFInfo
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- CN106764429A CN106764429A CN201611227293.2A CN201611227293A CN106764429A CN 106764429 A CN106764429 A CN 106764429A CN 201611227293 A CN201611227293 A CN 201611227293A CN 106764429 A CN106764429 A CN 106764429A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The continuous closed gathering system of individual well branch line ring-type ground crude oil and the continuous closed gathering method of crude oil, are related to a kind of continuous closed gathering system of crude oil and the continuous closed gathering method of crude oil.The present invention is in order to solve the problems, such as that the ground crude oil closed gathering technology of the existing carbon dioxide injection displacement of reservoir oil cannot be to extraction crude oil closed conveying, the easy frozen block of gathering line.Between the system includes oil-collecting valve group, block station, multi-purpose station, water mixing collector tubing, valve and oil well；Water mixing collector tubing is connected with hot water outlet and collection oil inlet；Method：To water mixing collector tubing hot-water supply between oil-collecting valve group, fluid-mixing to water mixing collector tubing downstream flow, when fluid-mixing mixes by opening corresponding valve, grease hole extraction fluid after next valve pipe with the fluid-mixing of upstream.Apparatus of the present invention and method realize ground crude oil and are conveyed through the air-fuel mixture after carbon dioxide drive, closed oil-collecting, it is to avoid frozen block, reduces cost, energy saving.The present invention is applied to the continuous closed gathering of crude oil.
Description
Technical field
The present invention relates to a kind of continuous closed gathering system of individual well branch line ring-type ground crude oil and the continuous closed gathering of crude oil
Method.
Background technology
The carbon dioxide injection displacement of reservoir oil is a newer technology of reservoir sweep, in recent years, application is just started in China's oil field development.
At present in the closed gathering technological process of surface gathering system, conventional oil-collecting flow cannot carry out close to the carbon dioxide injection displacement of reservoir oil
Close conveying, reason is to produce extraction fluid to cannot be introduced into oil collecting system or gathering line frozen block, some gathering lines 1 year can be with
There are more than five times frozen block phenomenons, if winter occurs frozen block phenomenon and will be unable to timely de-plugging.Existing common process can only be closed down
The whole administrative all oil wells of oil collecting ring (generally more than five mouthfuls of wells)；Although two-tube technique only need to close down a bite oil well i.e.
Can, but two-tube technology investment has a strong impact on oil field production.Therefore, carbon dioxide flooding gathering line frozen block is turning into oil in recent years
Well quantity-produced obstacle.
The content of the invention
The present invention in order in solving the ground crude oil closed gathering technology after the existing carbon dioxide injection displacement of reservoir oil, conventional oil-collecting system
System cannot propose that a kind of individual well branch line ring-type ground crude oil connects to extraction crude oil closed conveying, the problem of the easy frozen block of gathering line
Continuous closed gathering system and the continuous closed gathering method of crude oil.
A kind of individual well branch line ring-type ground continuous closed gathering system of crude oil, including between oil-collecting valve group, block station, joint
Stand, water mixing collector tubing, valve and oil well；
Several hot water outlets and several oil-collecting imports, water mixing collector tubing one end and hot water are provided between the oil-collecting valve group
Outlet connection, the water mixing collector tubing other end is connected with collection oil inlet；Oil well is connected with valve inlet by collector tubing, valve
Outlet is connected with water mixing collector tubing by valve pipe；Be provided between block station between oil-collecting valve group hot water supply pipe and
Oil returning tube between first stop；Oil returning tube between second station is provided between block station and multi-purpose station；Recovery is provided with block station
Water out, to reclaim and be provided with recycle-water pipeline between water out and hot water supply pipe；
Wherein, between oil-collecting valve group it is a transfer workshop, after the acquired petroleum fluids for obtaining collect between oil-collecting valve group
It is delivered in lower procedure, while being also equipped with the function to its pipeline supply hot water for connecting between oil-collecting valve group；
The collector tubing is heat tracing pipeline；The heat tracing pipeline is the carbon steel piping of liner 316L stainless steels；
A kind of side that the continuous closed gathering of crude oil is carried out using the individual well branch line ring-type ground continuous closed gathering system of crude oil
Method is carried out according to the following steps：
To water mixing collector tubing hot-water supply first between oil-collecting valve group, the valve nearest apart from hot water outlet is then turned on,
Oil well produced fluid delivers into water mixing collector tubing through collector tubing, valve and valve pipe successively, by Valve controlling valve
The temperature of door fluids within pipes is 8~12 DEG C, and pressure is 0.8~1.2MPa；The fluid-mixing that fluid mixes with hot water is to water mixing
Collector tubing downstream flow, when fluid-mixing is by after second valve pipe, opening the valve linked with second valve pipe
Door 5, new oil well produced fluid mixes continuation with the fluid-mixing of upstream to water mixing collector tubing downstream flow；When with watering gathering
After the valve of oil-piping link is all turned on, fluid-mixing is through collecting oil inlet between oil-collecting valve group；Wherein pass through hot water outlet
Hot water amount's control water mixing collector tubing in fluid-mixing temperature all the time more than the crude oil freezing point, the pressure of fluid-mixing
It is 0.2~0.25Mpa；The water content of fluid-mixing is 50~90%；The temperature of the hot water is 50~70 DEG C；
2nd, after fluid-mixing collects between oil-collecting valve group, block station, fluid-mixing are delivered to by oil returning tube between first stop
Gas-liquid separation is carried out in block station, the liquid phase that will be separated in block station carries out water-oil separating by heating, separates
To oil be delivered to multi-purpose station through oil returning tube between second station, isolated water is delivered to heat after block station is heated again
Water supply pipeline, that is, complete.
The operation principle of apparatus of the present invention is：
Oil well produced fluid includes oil, gas and water, and fluid enters water mixing collector tubing, oil well after oil well produced through valve
Interior associated gas contains substantial amounts of carbon dioxide, volume instantaneous expansion work when associated gas flows through valve, and extraction fluid temperature (F.T.) exists
This pipeline section reduction, this pipeline section with pipeline Electric heating for extraction fluid additional heat, keep fluid mobility, prevent manage
There is frozen block phenomenon in road, when having occurred and that frozen block phenomenon, take electrical heating to carry out de-plugging；
Oil well produced fluid into water mixing collector tubing with come from that the hot water supplied between oil-collecting valve group mixes to mixing
Fluid, fluid-mixing continues along water mixing collector tubing to water mixing collector tubing downstream flow, is connected with water mixing collector tubing many
Mouth oil well, fluid of the fluid-mixing successively with new extraction mixes, and final fluid-mixing is through collecting oil inlet between oil-collecting valve group；
After the fluid-mixing of a plurality of water mixing collector tubing collects between oil-collecting valve group, it is delivered to by oil returning tube between first stop
Block station, fluid-mixing carries out gas-liquid separation in block station, and the liquid phase that will be separated in block station is carried out by heating
Water-oil separating, isolated oil is delivered to multi-purpose station through oil returning tube between second station, isolated water in block station again
Hot water supply pipe is delivered to after secondary heating to be used again.
The present invention possesses following beneficial effect：
1st, apparatus of the present invention realize ground crude oil and are conveyed through the air-fuel mixture after carbon dioxide drive, closed oil-collecting, both
Avoid petroleum resources loss and beneficial to environmental protection, the collector tubing of multiple oil wells is separate, is finally collected to a watering gathering
Oil-piping, it is to avoid influence the phenomenon of other oil well oil-collectings to occur because frozen block the collector tubing of a bite well occurs, can be effective
Ensure production efficiency；
2nd, collector tubing is heat tracing pipeline in the present invention, when collector tubing occurs frozen block, can take electrical heating de-plugging
This most easy pipeline breaking block treatment, fast quick-recovery oil well production；The cost of electrical heating de-plugging is far below chemical plugging removal or opens
Dig the expense of pipeline；The pipe main body of heat tracing pipeline is anticorrosion pipeline, and the liner of anticorrosion pipeline is 316L stainless steels, can be with
Etching problem of the content carbon dioxide higher to tubing in solution extraction fluid；
3rd, in apparatus of the present invention, the collector tubing of multiple oil wells is collected to a water mixing collector tubing, multiple oil well produced
Fluid carry out water mixing in collector tubing and water mixing collector tubing intersection, and existing double-barreled water adding technique is a bite oil well pair
Ying Yigen water mixings pipe and an oil return pipe, existing double-barreled water adding technique there is waste of material and construction investment is big, therefore this hair
Bright device can reduce the usage amount of water mixing pipeline, reduce investment and generating run cost；Apparatus of the present invention investment is existing
/ 5th of two-tube technique；
4th, by rationed water mixing between oil-collecting valve group to each water mixing collector tubing in apparatus of the present invention, and collect each and mix
The oil return of water collector tubing；And water mixing is provided between administrative oil-collecting valve group from block station, in block station, oil return is heated
Separate, be recycled water, recycle-water is reused between oil-collecting valve group is delivered to after heating again, saved with water and the energy.
Brief description of the drawings
Fig. 1 is the individual well branch line ring-type ground of the present invention continuous closed gathering system schematic of crude oil.
Specific embodiment：
Technical solution of the present invention is not limited to act specific embodiment set forth below, also including between each specific embodiment
Any reasonable combination.
Specific embodiment one：
The present embodiment individual well branch line ring-type ground continuous closed gathering system of crude oil, the system include oil-collecting valve group between 1,
Block station 2, multi-purpose station 3, water mixing collector tubing 4, valve 5 and oil well 6；
1 is provided with several hot water outlet 1-1 and several oil-collecting import 1-2, water mixing collector tubing 4 one between the oil-collecting valve group
End is connected with hot water outlet 1-1, and the other end of water mixing collector tubing 4 is connected with collection oil inlet 1-2；Oil well 6 passes through with the import of valve 5
Collector tubing 6-1 is connected, and the outlet of valve 5 is connected with water mixing collector tubing 4 by valve pipe 4-1；Between oil-collecting valve group 1 with switch through
Stand and be provided with oil returning tube 8 between hot water supply pipe 7 and first stop between 2；Second is provided between block station 1 and multi-purpose station 3
Oil returning tube 9 between standing；Recovery water out 2-1 is provided with block station 2, is reclaimed and is set between water out 2-1 and hot water supply pipe 7
It is equipped with recycle-water pipeline 10.
Present embodiment possesses following beneficial effect：
1st, present embodiment device realizes ground crude oil and is conveyed through the air-fuel mixture after carbon dioxide drive, closed collection
Oil, had not only avoided petroleum resources loss but also beneficial to environmental protection, and the collector tubing of multiple oil wells is separate, is finally collected to one
Water mixing collector tubing, it is to avoid influence the phenomenon of other oil well oil-collectings to occur because frozen block the collector tubing of a bite well occurs,
Can effectively ensure that production efficiency；
2nd, collector tubing is heat tracing pipeline in present embodiment, when collector tubing occurs frozen block, can take electrical heating
De-plugging this most easy pipeline breaking block treatment, fast quick-recovery oil well production；The cost of electrical heating de-plugging is far below chemical plugging removal
Or excavate the expense of pipeline；The pipe main body of heat tracing pipeline is anticorrosion pipeline, and the liner of anticorrosion pipeline is 316L stainless steels,
Etching problem of the content carbon dioxide higher to tubing in fluid can be solved to produce；
3rd, in present embodiment device, the collector tubing of multiple oil wells is collected to a water mixing collector tubing, multiple oil wells
The fluid of extraction carries out water mixing in collector tubing and water mixing collector tubing intersection, and existing double-barreled water adding technique is a bite oil
Well correspondence a piece water mixing pipe and an oil return pipe, existing double-barreled water adding technique there is waste of material and construction investment is big, therefore
Apparatus of the present invention can reduce the usage amount of water mixing pipeline, reduce investment and generating run cost；Apparatus of the present invention investment is existing
/ 5th of the two-tube technique having；
4th, by rationed water mixing between oil-collecting valve group to each water mixing collector tubing in present embodiment device, and collect each
The oil return of individual water mixing collector tubing；And water mixing is provided between administrative oil-collecting valve group from block station, in block station, oil return is carried out
Heating is separated, and is recycled water, and recycle-water is reused between oil-collecting valve group is delivered to after heating again, has been saved with water and energy
Source.
Specific embodiment two：Present embodiment from unlike specific embodiment one：The collector tubing 6-1 is companion
Hot channel.Other steps and parameter are identical with specific embodiment one.
Specific embodiment three：Present embodiment from unlike specific embodiment two：The heat tracing pipeline is liner
The carbon steel piping of 316L stainless steels.Other steps and parameter are identical with specific embodiment two.
Specific embodiment four：Present embodiment is a kind of using the individual well branch line ring-type ground continuous closed gathering system of crude oil
Carry out the continuous closed gathering method of crude oil is carried out according to the following steps：
1 to the hot-water supply of water mixing collector tubing 4 first between oil-collecting valve group, is then turned on nearest apart from hot water outlet 1-1
Valve 5, oil well produced fluid delivers into water mixing collector tubing 4 through collector tubing 6-1, valve 5 and valve pipe 4-1 successively,
Temperature by fluid in the control valve pipeline 4-1 of valve 5 is 8~12 DEG C, and pressure is 0.8~1.2MPa；Fluid is mixed with hot water
The fluid-mixing of conjunction to the downstream flow of water mixing collector tubing 4, when fluid-mixing by after second valve pipe 4-1, open with
Second valve 5 of valve pipe 4-1 links, new oil well produced fluid mixes continuation with the fluid-mixing of upstream to watering gathering
The downstream flow of oil-piping 4；After the valve 5 linked with water mixing collector tubing 4 is all turned on, fluid-mixing is through collecting oil inlet 1-2
Into 1 between oil-collecting valve group；The temperature of fluid-mixing in water mixing collector tubing 4 is wherein controlled by the hot water amount of hot water outlet 1-1
All the time the pressure in crude oil freezing point fluid mixed above is 0.2~0.25Mpa；The water content of fluid-mixing be 50~
90%；The temperature of the hot water is 50~70 DEG C；
Fluid-mixing between oil-collecting valve group 1 collect after, block station 2, fluid-mixing are delivered to by oil returning tube between first stop 8
Gas-liquid separation is carried out in block station 2, the liquid phase that will be separated in block station 2 carries out water-oil separating by heating, separated
The oil for obtaining is delivered to multi-purpose station 3 through oil returning tube between second station 9, and isolated water is defeated after block station 2 is heated again
Hot water supply pipe 7 is delivered to, that is, is completed.
Present embodiment possesses following beneficial effect：
1st, present embodiment device realizes ground crude oil and is conveyed through the air-fuel mixture after carbon dioxide drive, closed collection
Oil, had not only avoided petroleum resources loss but also beneficial to environmental protection, and the collector tubing of multiple oil wells is separate, is finally collected to one
Water mixing collector tubing, it is to avoid influence the phenomenon of other oil well oil-collectings to occur because frozen block the collector tubing of a bite well occurs,
Can effectively ensure that production efficiency；
2nd, collector tubing is heat tracing pipeline in present embodiment, when collector tubing occurs frozen block, can take electrical heating
De-plugging this most easy pipeline breaking block treatment, fast quick-recovery oil well production；The cost of electrical heating de-plugging is far below chemical plugging removal
Or excavate the expense of pipeline；The pipe main body of heat tracing pipeline is anticorrosion pipeline, and the liner of anticorrosion pipeline is 316L stainless steels,
Etching problem of the content carbon dioxide higher to tubing in fluid can be solved to produce；
3rd, in present embodiment device, the collector tubing of multiple oil wells is collected to a water mixing collector tubing, multiple oil wells
The fluid of extraction carries out water mixing in collector tubing and water mixing collector tubing intersection, and existing double-barreled water adding technique is a bite oil
Well correspondence a piece water mixing pipe and an oil return pipe, existing double-barreled water adding technique there is waste of material and construction investment is big, therefore
Apparatus of the present invention can reduce the usage amount of water mixing pipeline, reduce investment and generating run cost；Apparatus of the present invention investment is existing
/ 5th of the two-tube technique having；
4th, by rationed water mixing between oil-collecting valve group to each water mixing collector tubing in present embodiment device, and collect each
The oil return of individual water mixing collector tubing；And water mixing is provided between administrative oil-collecting valve group from block station, in block station, oil return is carried out
Heating is separated, and is recycled water, and recycle-water is reused between oil-collecting valve group is delivered to after heating again, has been saved with water and energy
Source.
Embodiment：
The present embodiment is chosen at the oil field that Zhaodong City Chang Wu towns total amount is 57 mouthfuls of oil wells and is tested, and test period is 2013
January in November, 2016 in year；
The present embodiment individual well branch line ring-type ground continuous closed gathering system of crude oil, including 1, block station 2 between oil-collecting valve group,
Multi-purpose station 3, water mixing collector tubing 4, valve 5 and oil well 6；
1 is provided with several hot water outlet 1-1 and several oil-collecting import 1-2, water mixing collector tubing 4 one between the oil-collecting valve group
End is connected with hot water outlet 1-1, and the other end of water mixing collector tubing 4 is connected with collection oil inlet 1-2；Oil well 6 passes through with the import of valve 5
Collector tubing 6-1 is connected, and the outlet of valve 5 is connected with water mixing collector tubing 4 by valve pipe 4-1；Between oil-collecting valve group 1 with switch through
Stand and be provided with oil returning tube 8 between hot water supply pipe 7 and first stop between 2；Second is provided between block station 1 and multi-purpose station 3
Oil returning tube 9 between standing；Recovery water out 2-1 is provided with block station 2, is reclaimed and is set between water out 2-1 and hot water supply pipe 7
It is equipped with recycle-water pipeline 10；The collector tubing 6-1 is heat tracing pipeline；The heat tracing pipeline is the carbon steel of liner 316L stainless steels
Pipeline；
Using the individual well branch line ring-type ground continuous closed gathering system of crude oil carry out the method for the continuous closed gathering of crude oil by
Following steps are carried out：
1 to the hot-water supply of water mixing collector tubing 4 first between oil-collecting valve group, is then turned on nearest apart from hot water outlet 1-1
Valve 5, oil well produced fluid delivers into water mixing collector tubing 4 through collector tubing 6-1, valve 5 and valve pipe 4-1 successively,
Temperature by fluid in the control valve pipeline 4-1 of valve 5 is 12 DEG C, and pressure is 1.2MPa；The mixing that fluid mixes with hot water
Fluid to the downstream flow of water mixing collector tubing 4, when fluid-mixing is by after second valve pipe 4-1, opening and second valve
The valve 5 of door pipeline 4-1 links, new oil well produced fluid mixes continuation with the fluid-mixing of upstream to water mixing collector tubing 4
Downstream flow；After the valve 5 linked with water mixing collector tubing 4 is all turned on, fluid-mixing enters oil-collecting through collecting oil inlet 1-2
1 between valve group；Wherein the temperature of fluid-mixing in water mixing collector tubing 4 is controlled to be in all the time by the hot water amount of hot water outlet 1-1
More than crude oil freezing point, the pressure of fluid-mixing is 0.25Mpa；The water content of fluid-mixing is 50%；The temperature of the hot water
It is 70 DEG C；
Fluid-mixing between oil-collecting valve group 1 collect after, block station 2, fluid-mixing are delivered to by oil returning tube between first stop 8
Gas-liquid separation is carried out in block station 2, the liquid phase that will be separated in block station 2 carries out water-oil separating by heating, separated
The oil for obtaining is delivered to multi-purpose station 3 through oil returning tube between second station 9, and isolated water is defeated after block station 2 is heated again
Hot water supply pipe 7 is delivered to, that is, is completed；
Crude oil continuous closed gathering system primary construction investment in ground has existing double-barreled water adding technique phase in the present embodiment
Than, can reduce gathering line 48.9%, reduce 3 between oil-collecting valve group, reduce investment outlay 60%, save 1,200,000/year of labour cost, drop
Low conduit running energy consumption 35%；And in January, 2013 shows to never there is collector tubing generation frozen block between in November, 2016
As.
Claims (4)
1. the continuous closed gathering system of individual well branch line ring-type ground crude oil, it is characterised in that：Between the system includes oil-collecting valve group
(1), block station (2), multi-purpose station (3), water mixing collector tubing (4), valve (5) and oil well (6)；
(1) is provided with several hot water outlets (1-1) and several oil-collecting imports (1-2), water mixing collector tubing between the oil-collecting valve group
(4) one end is connected with hot water outlet (1-1), and water mixing collector tubing (4) other end is connected with collection oil inlet (1-2)；Oil well (6) with
Valve (5) import is connected by collector tubing (6-1), and valve (5) outlet is with water mixing collector tubing (4) by valve pipe (4-
1) connect；Hot water supply pipe (7) oil returning tube and between first stop is provided between oil-collecting valve group between (1) and block station (2)
(8)；Oil returning tube (9) between second station is provided between block station (1) and multi-purpose station (3)；Block station is provided with recycle-water on (2)
Outlet (2-1), to reclaim and be provided with recycle-water pipeline (10) between water out (2-1) and hot water supply pipe (7).
2. the continuous closed gathering system of individual well branch line ring-type ground according to claim 1 crude oil, it is characterised in that：It is described
Collector tubing (6-1) is heat tracing pipeline.
3. the continuous closed gathering system of individual well branch line ring-type ground according to claim 2 crude oil, it is characterised in that：It is described
Heat tracing pipeline is the carbon steel piping of liner 316L stainless steels.
4. one kind carries out crude oil company using the individual well branch line ring-type ground as claimed in claim 1 continuous closed gathering system of crude oil
Continuous closed gathering method, it is characterised in that：The method is carried out according to the following steps：
(1) is then turned on apart from hot water outlet (1-1) recently to water mixing collector tubing (4) hot-water supply first between oil-collecting valve group
Valve (5), oil well produced fluid delivers into water mixing through collector tubing (6-1), valve (5) and valve pipe (4-1) successively
Collector tubing (4), is 8~12 DEG C by the temperature of valve (5) control valve pipeline (4-1) interior fluid, pressure is 0.8~
1.2MPa；The fluid-mixing that fluid mixes with hot water to water mixing collector tubing (4) downstream flow, when fluid-mixing is by second
After valve pipe (4-1), the valve (5) linked with second valve pipe (4-1), new oil well produced fluid and upstream are opened
Fluid-mixing mixing continue to water mixing collector tubing (4) downstream flow；When the valve (5) linked with water mixing collector tubing (4)
After being all turned on, fluid-mixing is through collecting oil inlet (1-2) between oil-collecting valve group (1)；Wherein by the heat of hot water outlet (1-1)
The temperature of water rate control water mixing collector tubing (4) interior fluid-mixing is in more than crude oil freezing point all the time, the pressure of fluid-mixing
It is 0.2~0.25Mpa；The water content of fluid-mixing is 50~90%；The temperature of the hot water is 50~70 DEG C；
Fluid-mixing is delivered to block station (2), mixed flow after (1) is collected between oil-collecting valve group by oil returning tube between first stop (8)
Body carries out gas-liquid separation in block station (2), and the liquid phase that will be separated in block station (2) carries out profit point by heating
From isolated oil is delivered to multi-purpose station (3) through oil returning tube between second station (9), and isolated water is in block station (2)
Hot water supply pipe (7) is delivered to after heating again, that is, is completed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108131565A (en) * | 2017-12-21 | 2018-06-08 | 中国石油天然气股份有限公司 | CO2Claw-driving type annular water-doped oil-gas mixed transportation and oil collection method, device and system |
| CN111350943A (en) * | 2018-12-20 | 2020-06-30 | 中国石油天然气股份有限公司 | Crude oil gathering and transporting method |
| CN114542030A (en) * | 2020-11-25 | 2022-05-27 | 中国石油化工股份有限公司 | Water injection system and water injection method for fracture-cavity carbonate reservoir |
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| CN114542030A (en) * | 2020-11-25 | 2022-05-27 | 中国石油化工股份有限公司 | Water injection system and water injection method for fracture-cavity carbonate reservoir |
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Application publication date: 20170531 |