CN106988716A - A kind of row's formula horizontal-well network combines spontaneous underground mixed phase hot fluid oil production method - Google Patents
A kind of row's formula horizontal-well network combines spontaneous underground mixed phase hot fluid oil production method Download PDFInfo
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- 239000012530 fluid Substances 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 86
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 99
- 238000011084 recovery Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000010779 crude oil Substances 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 65
- 239000007924 injection Substances 0.000 claims description 65
- 239000000446 fuel Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000007800 oxidant agent Substances 0.000 claims description 20
- 230000001590 oxidative effect Effects 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 13
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- 239000000498 cooling water Substances 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 230000002441 reversible effect Effects 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000009834 vaporization Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 8
- 239000000084 colloidal system Substances 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract description 4
- -1 reduce heavy Substances 0.000 abstract 1
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- 230000015572 biosynthetic process Effects 0.000 description 4
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- 238000010795 Steam Flooding Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
-
- 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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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Abstract
A kind of row's formula horizontal-well network combines spontaneous underground mixed phase hot fluid oil production method, is related to oil extraction in oil field technical field.This method can employ crude oil reserve by arranging that row's formula horizontal-well network is improved to target reservoir, the displacement of reservoir oil is carried out by injecting mixed phase hot fluid, carbon dioxide and high-temperature steam in mixed phase hot fluid can be modified to crude oil, reduce heavy, colloid, the content of asphalitine in crude oil, play a part of reduction viscosity of crude, increase its mobility, make it easier for being plucked out of；This method hole pattern flexibly, can select a variety of different well locations, well depth according to actual reservoir condition；This method can apply to viscous crude, the super-heavy oil deposit primary oil recovery for being difficult to employ.
Description
Technical field
The present invention relates to oil extraction in oil field technical field, more particularly to a kind of row's formula horizontal-well network combines spontaneous underground mixed phase heat
Fluid oil production method.
Background technology
Viscous crude is high, the relatively denser crude oil of viscosity, and the country is named " viscous crude ", and foreign countries are named " heavy oil ".Due to its mobility
Energy is poor, can not even be flowed under reservoir condition, thus uses conventional recovery method to be difficult cost-effectively to develop.From 20th century
Just start, oil recovery by heating has been increasingly becoming the effective ways for exploiting this quasi-oil.Viscous crude has a very wide distribution, and has huge due to containing
Viscous crude stock number and paid attention to by each oil-producing country of the world, with the development of heating exploitation technology, exploitation scale is progressively expanding,
Yield is constantly increasing, and heavy crude heat extraction has occupied more important position in the oil industry.
Colloid and bitumen content are higher in viscous crude, and light fraction is seldom, however, as colloid increases with bitumen content, it is thick
The density of oil is also corresponding to viscosity to be increased, but the viscosity temperature of viscous crude is extremely sensitive, increases with temperature, and viscosity drastically declines.
Heavy crude reservoir typically uses heating exploitation method, can be divided into two classes to the mode that oil reservoir is heated.One is hot fluid
Oil reservoir is injected, such as hot-water flooding, steam soak, steam drive；Another kind of is that burning produces heat, referred to as combustion in situ in oil reservoir
Oil-extraction method.
With reference to the Developing status in current oil field, above-mentioned thermal process is respectively provided with certain limitation：1) hot-water flooding, steam are gulped down
Tell, steam three kinds of methods of drive have certain heat loss in application in pit shaft, and have certain corrosion to pit shaft, reduce well
The service life of cylinder, and add cost for oil production；2) for the thicker heavy crude reservoir of oil reservoir, super-heavy oil deposit, hot-water flooding, steam
Handle up, steam drives that three kinds of method effects are not good, thermal recovery involves that scope is small, and overall active viscous crude is less, and rate of oil production is slow；3)
Combustion in situ is in operation, and underground combustion temperature is up to 300-500 degrees Celsius, because stratum has anisotropism, combustion in situ
Has channeling easily occurs for oil recovery, because ignition temperature is higher, so be difficult to effectively block has channeling stratum, and combustion in situ is adopted
Oily method adjustment operation is relatively dumb, when being adjusted operation, and recovering gas injection needs to light a fire again；4) above-mentioned thermal process
The production of straight well well pattern is mostly used for, the supporting thermal recovery technology of application level well progress is relatively fewer, is passed through in straight well well pattern recovery process
It can often be formed and be difficult to employ " region of bypassed oil ", extraction also is difficult to often over the crude oil in multiple technique adjustment " region of bypassed oil ".
Therefore the present invention proposes that a kind of row's formula horizontal-well network combines spontaneous underground mixed phase hot fluid oil production method, and this method is led to
The hole pattern of the row's of mistake formula horizontal-well network, which is added, can employ crude oil reserve, and horizontal well refers to for straight well with oil recovery
Number height, small producing pressure differential, water-free oil production period length, " region of bypassed oil " such as are difficult to be formed at the advantage；By the way that underground mixed phase hot fluid is occurred
Device G.I.H effectively reduces the heat loss in pit shaft and pit shaft corrosion to oil reservoir top；Pass through the spontaneous high temperature mixed phase in underground
Hot fluid, effectively can be modified, viscosity reduction to viscous crude, increase its mobility and individual well involves scope, increase its rate of oil production and
Ultimate recovery.
The content of the invention
The embodiment of the present invention provides a kind of row's formula horizontal-well network and combines spontaneous underground mixed phase hot fluid oil production method, by
Target reservoir arrangement row's formula horizontal-well network, which is improved, can adopt crude oil reserve, and inject the progress displacement of reservoir oil of mixed phase hot fluid, mixed phase hot fluid
In carbon dioxide and high-temperature steam crude oil can be modified, reduce crude oil in heavy, colloid, the content of asphalitine, rise
To reduction viscosity of crude, increase the effect of its mobility, make it easier for being plucked out of；This method hole pattern flexibly, can basis
Actual reservoir condition selects a variety of different well locations, well depth；This method can apply to viscous crude, the super-heavy oil deposit one for being difficult to employ
It is secondary to recover the oil.
To achieve these goals, spontaneous underground mixed phase heat is combined the embodiments of the invention provide a kind of row's formula horizontal-well network
Fluid oil production method, methods described includes：It is right with reference to mixed phase hot fluid mechanism of oil displacement and geologic information in oil field development early stage
Target reservoir arranges row's formula horizontal-well network, and crude oil reserve can be employed by being improved by the row's of arrangement formula horizontal-well network, horizontal well screen cloth
Carried out after the completion of putting after supporting completion practice, completion, the mixed phase heated fluid generator under lower going-into-well at horizontal injection well heel, and
The supporting ground system of arrangement, then begins to underground generation mixed phase hot fluid and carries out displacement oil recovery, exploited from horizontal production well
Crude oil.
It is described that target reservoir arrangement row's formula horizontal-well network is included：Horizontal injection well side described in row's formula horizontal-well network
Can be in the same direction or reverse to the horizontal production well direction；Level is injected in row's formula horizontal-well network
Well and the horizontal segment of horizontal production well can be isometric or non-isometric；Level is noted in row's formula horizontal-well network
Entering well and horizontal production well aligned fashion or can be dislocatedly distributed；The horizontal injection well horizontal segment depth
Can be contour with the horizontal production well horizontal segment depth, the horizontal injection well horizontal segment can also be located at the level
Above or below producing well horizontal segment；The distance between each well can change within the specific limits according to reservoir condition.
It is preferred that, row's formula horizontal-well network arrangement scope is：300-1000 meters of horizontal-well network spacing range, horizontal segment length
Spend 500-2000 meters of scope.
Described supporting completion practice is divided into straight well section completion and horizontal segment completion, and the straight well section completion middle sleeve is selected
H levels, K grades, J grades, the mudding that added water between described sleeve pipe outer wall and stratum blocking layer, the grout off layer in API cannula series
It is high 100-300 meters, above oil reservoir；Horizontal segment completion can be filled out including perforation completion, barefoot completion, liner-type well completion and gravel
Charge well；Straight well section and net horizontal section connecting place during completion in the horizontal injection well add injection protective layer, the injection
Protective layer is that the smooth high temperature resistant stainless steel body in surface is constituted, and 5-10 millimeters of thickness, 5-30 meters of length plays level of protection well heel
Locate sleeve pipe not by mixed phase hot fluid corrosiveness.
Described stimulation work includes underground work and Ground Operation：
The underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well, the well successively
Lower mixed phase heated fluid generator depth of setting be 5-10 meter of oil reservoir top at, and to the packer progress seal；Wherein, it is described
Feeding pipe includes fuel feed pipe line, cooling water supply pipeline, oxidant supply pipeline and supply cable；Wherein, the well
Lower mixed phase heated fluid generator is by top connection component, fuel assembly, vaporization component, spiral boosting component and ejection assemblies group
Into；Feeding pipe is connected through packer with top connection component.
The Ground Operation includes：Connect ground supply system and underground mixed phase heated fluid generator, described ground system
System includes oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system, the oxygen
Agent feed system provides work pressure for feeding the underground mixed phase heated fluid generator after oxidant is dried, filtered
Power；The fuel feed system is used to fuel feeding the underground mixed phase heated fluid generator, and provides operating pressure；It is described
Cooling water supply system is used to that the underground mixed phase heated fluid generator will to be fed after different types of water filtration, softening, and carries
For operating pressure；The electric ignition system is used to carry out electric ignition operation to the underground mixed phase heated fluid generator, makes above-mentioned
Oxidant, fuel and water form mixed phase burning in the mixed phase heated fluid generator of underground；The monitoring system is used to monitor in real time
The oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and underground mixed phase hot fluid occur
The specific works parameter that produces when device works, and horizontal production well produced gas gas component, such as hydrogen sulfide, oxygen, dioxy
Change carbon content, and then judge oil recovery situation and underground mixed phase heated fluid generator internal-combustion quality in oil reservoir, and can pass through
Monitoring system realizes remote control operation.
In horizontal production well oil recovery process, by controlling Produced Liquid discharge capacity, and then well fluid level and shaft bottom stream are adjusted
Pressure, makes between producing well flowing bottomhole pressure (FBHP) holding 1.5-4Mpa, by adjusting rational mining speed, makes the mixed phase in injection stratum
Hot fluid is fully used.
The beneficial effect of the embodiment of the present invention is：1) present invention to target reservoir by arranging that row's formula horizontal-well network is improved
Crude oil reserve can be adopted, relative to traditional straight well well pattern, horizontal well patterns, row's formula horizontal-well network of the present invention can be improved to a greater extent
Crude oil reserve can be adopted in stratum；2) present invention by ground corollary system to underground mixed phase heated fluid generator provide oxidant,
Fuel and water, form mixed phase burning generation high-temperature steam and carbon dioxide in underground, and therewith in injection oil reservoir, mixed phase hot fluid
In carbon dioxide and high-temperature steam crude oil can be modified, reduce crude oil in heavy, colloid, the content of asphalitine, rise
To reduction viscosity of crude, increase the effect of its mobility, make it easier for being plucked out of；3) relative to ground burning manufacture steam,
The present invention uses underground combustion system, and combustion product is directly injected into stratum, and zero-emission is environmentally safe；4) this method phase
The corrosion 5 of wellbore heat loss and steam to pit shaft is reduced for steam drive oil production method) relative to combustion in situ oil recovery side
Method, reduces the volume of ground installation, and this method compares combustion in situ using more flexible, is suitable for different geological conditions
Oil reservoir, and note can be stopped in oil recovery process be at any time adjusted measure operation, and combustion in situ oil production method stops gas injection
Recovering gas injection afterwards needs to re-start underground ignition operation；6) this method can apply to viscous crude, the super-viscous oil oil for being difficult to employ
Hide primary oil recovery.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, it can also be obtained on the premise of not paying creative work according to these accompanying drawings other attached
Figure.
Fig. 1 is horizontal-well network aligned fashion schematic diagram in the same direction.
Fig. 2 is the reverse aligned fashion schematic diagram of horizontal-well network.
Fig. 3 is that horizontal-well network is dislocatedly distributed schematic diagram A in the same direction.
Fig. 4 is that horizontal-well network is dislocatedly distributed schematic diagram B in the same direction.
Fig. 5 is that horizontal-well network is reversely dislocatedly distributed schematic diagram A.
Fig. 6 is that horizontal-well network is reversely dislocatedly distributed schematic diagram B.
Fig. 7 is horizontal segment depth schematic diagram.
Fig. 8 is injection well completion schematic diagram.
Fig. 9 is mixed phase heated fluid generator arrangement schematic diagram under Horizontal Well.
Figure 10 is that ground system arranges schematic diagram.
Drawing reference numeral：1st, horizontal well straight well section 2, sleeve pipe 3, grout off layer 4, injection protective layer 5, horizontal well level
Section 6, oil reservoir 7, packer 8, feeding pipe 9, ground supply arrangement for connecting system 10, top connection component 11, burning
Component 12, vaporization component 13, spiral boosting component 14, ejection assemblies 15, oxidant feed system 16, fuel supply system
System 17, cooling water supply system 18, electric ignition system 19, monitoring system 20, production tree 100, horizontal injection well 200,
Horizontal production well.
Embodiment
The embodiment of the present invention provides a kind of row's formula horizontal-well network and combines spontaneous underground mixed phase hot fluid oil production method, in oil field
Early stage is developed, mechanism and geologic information are driven with reference to mixed phase hot fluid, row's formula horizontal-well network is arranged to target reservoir, passes through the row of arrangement
Formula horizontal-well network can employ crude oil reserve to improve, and horizontal-well network arrangement is carried out after supporting completion practice, completion after completing, in water
Mixed phase heated fluid generator under lower going-into-well at flat injection well heel, and supporting ground system is arranged, then begin to underground generation
Mixed phase hot fluid carries out displacement oil recovery, the crude oil extraction from horizontal production well；This method is carried by the row's of arrangement formula horizontal-well network
Height can employ crude oil reserve, the script crude oil that is difficult to produce can be heated by spontaneous underground mixed phase hot fluid, viscosity reduction from
And produce, this method can effectively improve ultimate recovery and rate of oil production.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Spontaneous underground mixed phase hot fluid oil production method is combined the embodiments of the invention provide a kind of row's formula horizontal-well network, it is described
Method comprises the following steps：
Step one：In oil field development early stage, mechanism and geologic information are driven with reference to mixed phase hot fluid, target reservoir is arranged and arranged
Formula horizontal-well network, row's formula horizontal-well network has following several arrangement modes：
As shown in figure 1, Fig. 1 is horizontal-well network aligned fashion schematic diagram in the same direction, horizontal injection well and horizontal well production are in the same direction
Distribution, horizontal injection well horizontal segment is in laterally aligned distribution with horizontal production well horizontal segment；
As shown in Fig. 2 Fig. 2 is the reverse aligned fashion schematic diagram of horizontal-well network, horizontal injection well is reverse with horizontal production well
Distribution, horizontal injection well horizontal segment is in laterally aligned distribution with horizontal production well horizontal segment；
It is dislocatedly distributed in the same direction schematic diagram A as shown in figure 3, Fig. 3 is horizontal-well network, horizontal injection well is in the same direction with horizontal production well
Distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and is located at horizontal injection well heel
Rear at horizontal production well heel；
It is dislocatedly distributed in the same direction schematic diagram B as shown in figure 4, Fig. 4 is horizontal-well network, horizontal injection well is in the same direction with horizontal production well
Distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and is located at horizontal injection well heel
Front at horizontal production well heel；
Reversely it is dislocatedly distributed schematic diagram A as shown in figure 5, Fig. 5 is horizontal-well network, horizontal injection well is reverse with horizontal production well
Distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and is located at horizontal injection well heel
Front at horizontal production well tiptoe；
Reversely it is dislocatedly distributed schematic diagram B as shown in fig. 6, Fig. 6 is horizontal-well network, horizontal injection well is reverse with horizontal production well
Distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and is located at horizontal injection well heel
Rear at horizontal production well tiptoe；
Horizontal injection well horizontal segment is placed with following several ways with horizontal production well horizontal segment depth, as shown in fig. 7, being
Horizontal segment depth schematic diagram：
Fig. 7 A are that horizontal injection well horizontal segment depth of setting is less than horizontal production well horizontal segment depth of setting；
Fig. 7 B are that horizontal injection well horizontal segment depth of setting is equal to horizontal production well horizontal segment depth of setting；
Fig. 7 C are that horizontal injection well horizontal segment depth of setting is more than horizontal production well horizontal segment depth of setting.
Step 2：Horizontal-well network arrangement carries out supporting completion practice after completing, as shown in figure 8, supporting completion practice is divided into
Horizontal well straight well 1 completion of section and the completion of horizontal well horizontal segment 5, horizontal well straight well 1 completion middle sleeve 2 of section select API cannula series
In H levels, K grades, J grades, added between the outer wall of described sleeve pipe 2 and stratum grout off layer 3, the grout off floor height 100-
300 meters, positioned at oil reservoir top；
The completion of horizontal well horizontal segment 5 can include perforation completion, barefoot completion, liner-type well completion and gravel pack completion；
Straight well section and net horizontal section connecting place during completion in the horizontal injection well add injection protective layer 4, the injection
Protective layer 4 is that the smooth high temperature resistant stainless steel body in surface is constituted, and plays sleeve pipe at level of protection well heel not rotten by mixed phase hot fluid
Erosion is acted on.
Step 3：Stimulation work, stimulation work includes underground work and Ground Operation：
Wherein described underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well successively, and
The packer is carried out to seal, as shown in figure 9, being mixed phase heated fluid generator arrangement schematic diagram under Horizontal Well, underground is mixed
Phase heated fluid generator is made up of 5 parts, is respectively：Top connection component 10, fuel assembly 11, vaporization component 12, spiral increase
Press component 13, ejection assemblies 14；The underground mixed phase heated fluid generator depth of setting is supply pipe at 5-10 meters of oil reservoir top
Road 8 is connected with underground mixed phase heated fluid generator by ground supply arrangement for connecting system 9；
The Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, as shown in Figure 10, institute
The ground system stated includes oxidant feed system 15, fuel feed system 16, cooling water supply system 17, electric ignition system 18
With monitoring system 19；The ground system is connected by production tree 20 with feeding pipe 8.
Step 4：Then begin to underground generation mixed phase hot fluid and carry out displacement oil recovery, and exploit former from horizontal production well
Oil；
When underground mixed phase heated fluid generator is run, fed from ground supply system to underground mixed phase heated fluid generator
Oxidant, fuel and water, by its internal high pressure burning generation mixed phase hot fluid, enter injection via the supercharging of spiral boosting component 13
Component 14, enters oil reservoir via the adjustment injection direction of ejection assemblies 14, into oil reservoir before spray first to horizontal well straight well 1 He of section
The injection protective layer 4 of the intersection of horizontal well horizontal segment 5, injection protective layer 4 plays cushioning effect, it is to avoid sleeve pipe at horizontal well heel
Caused to damage by mixed phase hot fluid direct-injection.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment 1：
One, certain oil field block, 1850 meters of reservoir depth, 53 degrees Celsius of reservoir temperature, 10 meters of core intersection, viscosity of crude
42000 mpas, 18.2 MPas of original formation pressure.
The first step：Row's formula horizontal-well network is arranged, arrangement refers to Fig. 2, Fig. 7 A, and horizontal injection well is anti-with horizontal production well
To distribution, horizontal injection well horizontal segment is in laterally aligned distribution with horizontal production well horizontal segment, and horizontal section length is 1000 meters, water
Horizontal well is away from 500 meters.Horizontal injection well horizontal segment depth of setting is less than 4 meters of horizontal production well horizontal segment depth of setting.
Second step：Horizontal-well network arrangement carries out supporting completion practice after completing, and refering to Fig. 8, supporting completion practice is divided into water
Horizontal well straight well section completion and horizontal well horizontal segment completion, the K that horizontal well straight well section completion middle sleeve is selected in API cannula series
Level, casing diameter is 7 inches, the mudding that added water between sleeve outer wall and stratum blocking layer, and grout off layer height is 100 meters；Level
Well horizontal segment completion selects barefoot completion；It is high temperature resistant stainless steel to spray protective layer material, and thickness is 5 millimeters, and length is 5 meters.
3rd step：Stimulation work, stimulation work includes underground work and Ground Operation：
Underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well, and to the envelope successively
Carry out sealing every device, refering to Fig. 9, the underground mixed phase heated fluid generator depth of setting is at 10 meters of oil reservoir top；
The Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, described refering to Figure 10
Ground system include oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system
System；Ground supply system is connected by production tree with feeding pipe.
4th step：Then begin to underground generation mixed phase hot fluid and carry out displacement oil recovery, and exploit former from horizontal production well
Oil；
Ground supply system feeds oxidant, fuel and water to underground mixed phase heated fluid generator, and electric ignition system is to it
Electric ignition operation is carried out, then by its internal high pressure burning generation mixed phase hot fluid, via spiral boosting component and ejection assemblies
After be injected into oil reservoir；Inject in mixed phase hot fluid, high-temperature steam amount is daily 70 tons, amount of carbon dioxide is daily 20 tons, note
Enter pressure for 20 MPas.
Embodiment 2：
One, certain oil field block, 1500 meters of reservoir depth, 45 degrees Celsius of reservoir temperature, 15 meters of core intersection, viscosity of crude
32000 mpas, 15.6 MPas of original formation pressure.
The first step：Row's formula horizontal-well network is arranged, arrangement refers to Fig. 5, Fig. 7 C, and horizontal injection well is anti-with horizontal production well
To distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and position at horizontal injection well heel
400 meters of the front at horizontal production well tiptoe, horizontal section length is 1200 meters, and horizontal well is away from 600 meters；Horizontal injection well horizontal segment
Depth of setting is more than 6 meters of horizontal production well horizontal segment depth of setting.
Second step：Horizontal-well network arrangement carries out supporting completion practice after completing, and refering to Fig. 8, supporting completion practice is divided into water
Horizontal well straight well section completion and horizontal well horizontal segment completion, the H that horizontal well straight well section completion middle sleeve is selected in API cannula series
Level, casing diameter is 8-5/8 inches, the mudding that added water between sleeve outer wall and stratum blocking layer, and grout off layer height is 130 meters；
Horizontal well horizontal segment completion selects barefoot completion；It is high temperature resistant stainless steel to spray protective layer material, and thickness is 10 millimeters, and length is
15 meters.
3rd step：Stimulation work, stimulation work includes underground work and Ground Operation：
Underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well, and to the envelope successively
Carry out sealing every device, refering to Fig. 9, the underground mixed phase heated fluid generator depth of setting is at 5 meters of oil reservoir top；
The Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, described refering to Figure 10
Ground system include oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system
System；Ground supply system is connected by production tree with feeding pipe.
4th step：Then begin to underground generation mixed phase hot fluid and carry out displacement oil recovery, and exploit former from horizontal production well
Oil；
Ground supply system feeds oxidant, fuel and water to underground mixed phase heated fluid generator, and electric ignition system is to it
Electric ignition operation is carried out, then by its internal high pressure burning generation mixed phase hot fluid, via spiral boosting component and ejection assemblies
After be injected into oil reservoir；Inject in mixed phase hot fluid, high-temperature steam amount is daily 120 tons, amount of carbon dioxide is daily 30 tons, note
Enter pressure for 22 MPas.
Embodiment 3：
One, certain oil field block, 2350 meters of reservoir depth, 70 degrees Celsius of reservoir temperature, 13 meters of core intersection, viscosity of crude
86000 mpas, 22 MPas of original formation pressure.
The first step：Row's formula horizontal-well network is arranged, arrangement refers to Fig. 6, Fig. 7 B, and horizontal injection well is anti-with horizontal production well
To distribution, horizontal injection well horizontal segment is distributed with horizontal production well horizontal segment in transversion malposition, and position at horizontal injection well heel
300 meters of rear at horizontal production well tiptoe, horizontal section length is 900 meters, and horizontal well is away from 400 meters；Horizontal injection well horizontal segment
Depth of setting is equal to horizontal production well horizontal segment depth of setting.
Second step：Horizontal-well network arrangement carries out supporting completion practice after completing, and refering to Fig. 8, supporting completion practice is divided into water
Horizontal well straight well section completion and horizontal well horizontal segment completion, the K that horizontal well straight well section completion middle sleeve is selected in API cannula series
Level, casing diameter is 7 inches, the mudding that added water between sleeve outer wall and stratum blocking layer, and grout off layer height is 300 meters；Level
Well horizontal segment completion selects gravel pack completion；It is high temperature resistant stainless steel to spray protective layer material, and thickness is 10 millimeters, and length is
30 meters.
3rd step：Stimulation work, stimulation work includes underground work and Ground Operation：
Underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well, and to the envelope successively
Carry out sealing every device, refering to Fig. 9, the underground mixed phase heated fluid generator depth of setting is at 8 meters of oil reservoir top；
The Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, described refering to Figure 10
Ground system include oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system
System；Ground supply system is connected by production tree with feeding pipe.
4th step：Then begin to underground generation mixed phase hot fluid and carry out displacement oil recovery, and exploit former from horizontal production well
Oil；
Ground supply system feeds oxidant, fuel and water to underground mixed phase heated fluid generator, and electric ignition system is to it
Electric ignition operation is carried out, then by its internal high pressure burning generation mixed phase hot fluid, via spiral boosting component and ejection assemblies
After be injected into oil reservoir；Inject in mixed phase hot fluid, high-temperature steam amount is daily 100 tons, amount of carbon dioxide is daily 25 tons, note
Enter pressure for 27 MPas.
Embodiment 4：
One, certain oil field block, 900 meters of reservoir depth, 44 degrees Celsius of reservoir temperature, 24 meters of core intersection, viscosity of crude
3000 mpas, 10.8 MPas of original formation pressure.
The first step：Row's formula horizontal-well network is arranged, arrangement refers to Fig. 1, Fig. 7 B, and horizontal injection well and horizontal well production are same
To distribution, horizontal injection well horizontal segment is in laterally aligned distribution with horizontal production well horizontal segment, and horizontal section length is 2000 meters, water
Horizontal well is away from 800 meters；Horizontal injection well horizontal segment depth of setting is equal to horizontal production well horizontal segment depth of setting.
Second step：Horizontal-well network arrangement carries out supporting completion practice after completing, and refering to Fig. 8, supporting completion practice is divided into water
Horizontal well straight well section completion and horizontal well horizontal segment completion, the J that horizontal well straight well section completion middle sleeve is selected in API cannula series
Level, casing diameter is 8-5/8 inches, the mudding that added water between sleeve outer wall and stratum blocking layer, and grout off layer height is 100 meters；
Horizontal well horizontal segment completion selects liner-type well completion；It is high temperature resistant stainless steel to spray protective layer material, and thickness is 7 millimeters, and length is 5
Rice,.
3rd step：Stimulation work, stimulation work includes underground work and Ground Operation：
Underground work includes：Mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well, and to the envelope successively
Carry out sealing every device, be mixed phase heated fluid generator arrangement schematic diagram under Horizontal Well refering to Fig. 9；The underground mixed phase hot-fluid
Body generator depth of setting is at 6 meters of oil reservoir top；
The Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, described refering to Figure 10
Ground system include oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system
System；Ground supply system is connected by production tree with feeding pipe.
4th step：Then begin to underground generation mixed phase hot fluid and carry out displacement oil recovery, and exploit former from horizontal production well
Oil；
Ground supply system feeds oxidant, fuel and water to underground mixed phase heated fluid generator, and electric ignition system is to it
Electric ignition operation is carried out, then by its internal high pressure burning generation mixed phase hot fluid, via spiral boosting component and ejection assemblies
After be injected into oil reservoir；Inject in mixed phase hot fluid, high-temperature steam amount is daily 200 tons, amount of carbon dioxide is daily 45 tons, note
Enter pressure for 12 MPas.
Claims (10)
1. a kind of row's formula horizontal-well network combines spontaneous underground mixed phase hot fluid oil production method, it is characterised in that methods described includes：
Row's formula horizontal-well network is arranged to target reservoir, crude oil reserve can be employed by being improved by the row's of arrangement formula horizontal-well network, and；
Horizontal-well network arrangement carries out supporting completion practice after completing, and；
After above-mentioned supporting completion practice, stimulation work is carried out in the horizontal injection well, the stimulation work includes underground work
And Ground Operation, and；
Subsequent underground generation mixed phase hot fluid carries out displacement oil recovery, the crude oil extraction from horizontal production well.
2. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, horizontal injection well and horizontal production well direction can be in the same direction or reverse in row's formula horizontal-well network.
3. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the horizontal injection well horizontal segment depth and the horizontal production well horizontal segment depth can be contour, the levels
Injection well horizontal segment can also be located above or below the horizontal production well horizontal segment.
4. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
Be, supporting completion practice is divided into straight well section completion and horizontal segment completion, the straight well section completion middle sleeve outer wall and stratum it
Between add grout off layer, 100-300 meters of the grout off floor height, positioned at oil reservoir top；Horizontal segment completion can include penetrating
Hole completion, barefoot completion, liner-type well completion and gravel pack completion；In the straight well section and horizontal well of the horizontal injection well during completion
Section connecting place adds injection protective layer.
5. a kind of row's formula horizontal-well network as claimed in claim 4 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the injection protective layer is that the smooth high temperature resistant stainless steel body in surface is constituted, and 5-10 millimeters of thickness, 5-30 meters of length is played
Sleeve pipe is not by mixed phase hot fluid corrosiveness at level of protection well heel.
6. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the underground work includes：Mix mixed phase heated fluid generator, packer, feeding pipe under lower going-into-well successively, the underground
Phase heated fluid generator depth of setting be 5-10 meter of oil reservoir top at, and to the packer progress seal.
7. a kind of row's formula horizontal-well network as claimed in claim 6 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the feeding pipe includes fuel feed pipe line, cooling water supply pipeline, oxidant supply pipeline and supply cable.
8. a kind of row's formula horizontal-well network as claimed in claim 6 combines spontaneous underground mixed phase hot fluid oil production method, its feature
Be, the underground mixed phase heated fluid generator by top connection component, fuel assembly, vaporization component, spiral boosting component and
Ejection assemblies are constituted.
9. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the Ground Operation includes connection ground supply system and underground mixed phase heated fluid generator, described ground system bag
Include oxidant feed system, fuel feed system, cooling water supply system, electric ignition system and monitoring system.
10. a kind of row's formula horizontal-well network as claimed in claim 1 combines spontaneous underground mixed phase hot fluid oil production method, its feature
It is, the underground generation mixed phase hot fluid includes, and oxidant, fuel and water is injected to underground by ground system, in underground
Mixed phase burning is completed, and generates mixed phase hot fluid, progress displacement oil recovery in oil reservoir is subsequently injected into.
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Application publication date: 20170728 |