CN107795309A - Heavy oil production pipe column and oil production method thereof - Google Patents
Heavy oil production pipe column and oil production method thereof Download PDFInfo
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- CN107795309A CN107795309A CN201711105596.1A CN201711105596A CN107795309A CN 107795309 A CN107795309 A CN 107795309A CN 201711105596 A CN201711105596 A CN 201711105596A CN 107795309 A CN107795309 A CN 107795309A
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- heavy oil
- flow controller
- oil production
- blind pipe
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- 239000003921 oil Substances 0.000 title claims abstract description 49
- 239000000295 fuel oil Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001301 oxygen Substances 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 7
- 230000005465 channeling Effects 0.000 abstract 1
- 238000012806 monitoring device Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000011218 segmentation Effects 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 230000004087 circulation Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005417 food ingredient Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 235000013324 preserved food Nutrition 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002459 sustained effect Effects 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
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Regulation And Control Of Combustion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a heavy oil production pipe and an oil production method thereof, wherein the heavy oil production pipe comprises: the screen pipe is used for being arranged in the horizontal well section, and screen slots used for communicating an oil layer and a shaft are arranged on the screen pipe; the blind pipe is arranged in the sieve pipe; a plurality of packers disposed in an annulus between the screen and the blind pipe, adjacent packers being spaced apart by a predetermined distance; the temperature monitoring device comprises a plurality of throttles, wherein the throttles are arranged in the blind pipes and located between two adjacent packers, a temperature monitoring part is arranged on each throttles, and when the temperature monitored by the temperature monitoring part reaches a preset temperature, the throttles are closed. The heavy oil production pipe column and the oil production method thereof provided by the invention can realize the control of stable combustion in the fireflood combustion process and prevent the problems of fire line channeling and oxygen breakthrough in the horizontal well fireflood process.
Description
Technical field
The present invention relates to heavy oil fields oil recovery technique field, more particularly to a kind of heavy oil flow string and its oil production method.
Background technology
The Major Difficulties of heavy oil fields exploitation are the high viscosity, high density and lazy flow of crude oil.For heavy oil fields,
Generally use fireflood technology carries out the viscosity reduction exploitation that heats up.Fireflood technology is a kind of the methods of utilizing electric ignition, chemic ignition to make oil
Layer temperature reaches crude oil burning-point, and makes the oil production method of Crude Oil sustained combustion to oil reservoir injection air.This method has heat
The advantage such as efficiency high, ultimate recovery height, energy-saving and emission-reduction.
, it is necessary to successively inject air to stratum when carrying out heavy oil exploitation using fireflood technology, oil reservoir is lighted, makes crude oil
Produced through producing well.Currently for the fiery breeding phase at chamber initial stage after successful ignition oil reservoir, it is necessary to ensure that fireflood process stabilization fires
Burn.However, in current development process, high temperature moveable oil can make the temperature liter of band residing for net horizontal section through horizontal well output
It is high.After temperature is raised to a certain extent at this, the closure of denier air breakthrough coke zone is directly entered horizontal wellbore and causes height
Temperature burning, can cause oxygen content in horizontal well production fluid temperature and output gas drastically to raise, and even can burn water when serious
Horizontal well cylinder.So in fireflood combustion process, how to control stable burning is key point.
But there is presently no a kind of effective fire flood technology, air flow equilibrium drainage can be preferably controlled,
Stable burning.Therefore, it is necessary to a kind of new heavy oil oil recovery technique is proposed, in fireflood combustion process, to realize that control is stable
Burning, prevent live wire during horizontal well fireflood and alter logical, the problem of oxygen is broken through.
The content of the invention
, can in fireflood combustion process it is an object of the invention to provide a kind of heavy oil flow string and its oil production method
The stable burning of control is realized, live wire during horizontal well fireflood is prevented and alters logical, the problem of oxygen is broken through.
The above-mentioned purpose of the present invention can be realized using following technical proposal：
A kind of heavy oil flow string, the heavy oil flow string include：
For the screen casing being arranged in net horizontal section, the screen slot for connecting oil reservoir and pit shaft is provided with the screen casing；
Blind pipe, the blind pipe are arranged in the screen casing, blind pipe and flow controller UNICOM, and the stream of blind pipe is entered by flow controller
Know from experience along blind pipe output to ground；
Multiple packers, the packer are arranged in the annular space between the screen casing and the blind pipe, two neighboring envelope
Every device spaced a predetermined distance；
Multiple flow controllers, the flow controller are arranged in the blind pipe, and between two neighboring packer, the section
Temperature monitoring portion is provided with stream device, when the temperature that the temperature monitoring portion monitors reaches more than predetermined temperature, the throttling
Device is closed.
In one preferred embodiment, the preset distance is projector distance of the infiltrated zone in net horizontal section.
In one preferred embodiment, the preset distance is 20 meters to 30 meters.
In one preferred embodiment, the predetermined temperature is the temperature of oily high-temperature oxydation burning.
In one preferred embodiment, the predetermined temperature is more than 350 degrees Celsius.
A kind of heavy oil oil production method, the heavy oil oil production method include：
In the screen casing of producing well horizontal wellbore tripping in blind pipe, between the screen casing and the blind pipe spaced a predetermined distance
The multiple packers of tripping in, tripping in has the flow controller in temperature monitoring portion on the blind pipe and between two neighboring packer, will
Producing well horizontal wellbore is separated into multistage；
Real time temperature monitoring is carried out by the temperature monitoring portion of the flow controller, when the temperature prison portion surveys the temperature monitored
When degree exceedes predetermined temperature, the flow controller is closed.
In one preferred embodiment, the preset distance is projector distance of the infiltrated zone in net horizontal section.
In one preferred embodiment, the preset distance is 20 meters to 30 meters.
In one preferred embodiment, the predetermined temperature is the temperature of oily high-temperature oxydation burning.
In one preferred embodiment, the predetermined temperature is more than 350 degrees Celsius.
The features and advantages of the invention are：Flow string and its oil production method provided herein, by producing well screen
Packer and flow controller are added on blind pipe in pipe, there is temperature monitoring portion on the flow controller in blind pipe, packer will produce
Well net horizontal section is separated into several sections, when combustion chamber is advanced to horizontal wellbore, now temperature monitoring on horizontal wellbore section flow controller
When the temperature in portion is more than 350 DEG C, the flow controller adjustment of this section is closed, and the now circulation between horizontal wellbore blind pipe and flow controller is led to
Road is closed, and gas (vapour) liquid stream body does not enter back into this wellbore section, avoids live wire and oxygen from scurrying into pit shaft, combustion zone can not be pushed away normally
Enter.Air can reach along top oil reservoir onlap and burn leading edge, the stable combustion front to turn forward be formed, in next packing
The wellbore section of device packing continues stabilization and burnt, and the stable gravity drainage development mode of segmentation cutting is realized, so as to avoid air direct
Into horizontal well pit shaft, ensure that fireflood leading edge is stable and burn, there is good security and good economic benefit.
With reference to following explanation and accompanying drawing, the particular implementation of the application is disclose in detail, specifies the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Fig. 1 is the schematic diagram near fireflood initiation combustion leading edge；
Fig. 2 is a kind of schematic diagram of heavy oil flow string in the application embodiment；
Fig. 3 is a kind of profile of heavy oil flow string in the application embodiment；
Fig. 4 is that a kind of heavy oil flow string realizes the stable gravity drainage development mode of segmentation cutting in the application embodiment
Schematic diagram；
Fig. 5 is a kind of step flow chart of heavy oil oil production method in the application embodiment.
Description of reference numerals：
Gas injection well -1；Producing well -2；Toe-end -21；Heel end -22；Screen casing -3；Screen slot -30；Blind pipe -4；Packer -5；Throttling
Device -6；Temperature monitoring portion -60.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme is elaborated, it should be understood that these
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, this area skill
Modification of the art personnel to the various equivalent form of values of the present invention is each fallen within the application appended claims limited range.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " on ",
" under ", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
As shown in figure 1, for heavy oil recovery, its well pattern structure includes for the gas injection well 1 of gas injection and for recovering the oil
Producing well 2.Wherein, producing well 2 is horizontal well, has the net horizontal section positioned at oil reservoir bottom.In fireflood early stage, gas injection well 1
Include successively between producing well 2：Combustion front, coke zone, infiltrated zone, cold oil band.On stream, high temperature moveable oil passes through
Horizontal well output can raise the temperature of band residing for net horizontal section.After temperature is raised to a certain extent at this, a denier air
The closure of breakthrough coke zone is directly entered horizontal wellbore and causes high-temp combustion, can cause horizontal well production fluid temperature and output gas
Middle oxygen content drastically raises, and even can burn horizontal wellbore when serious.
The present invention provides a kind of heavy oil flow string and its oil production method, in fireflood combustion process, can preferably control
Air flow equilibrium drainage processed, the stable burning of control is realized, live wire alters logical, oxygen breakthrough during preventing horizontal well fireflood
The problem of.
Fig. 2 to Fig. 4 is referred to, a kind of flow string is provided in the application embodiment, can be included：For being arranged on water
Screen casing 3 in horizontal well section, the screen slot 30 for connecting oil reservoir and pit shaft is provided with the screen casing 3；Blind pipe 4, the blind pipe 4 are set
Put in the screen casing 3；Multiple packers 5, the packer 5 are arranged on the annular space between the screen casing 3 and the blind pipe 4
In, two neighboring packer 5 is spaced a predetermined distance；Multiple flow controllers 6, the flow controller 6 is arranged in the blind pipe 4, and position
Between two neighboring packer 5, temperature monitoring portion 60 is provided with the flow controller 6, when the temperature monitoring portion 60 monitors
To temperature reach more than predetermined temperature when, the flow controller 6 is closed.
The flow string that present embodiment is provided, when being particularly applicable in fireflood development technique field, reservoir fluid leads to
Cross screen slot 30 and enter the wellbore section that two packers 5 insulate, blind pipe 4 is then entered by flow controller 6 again, then produce along blind pipe 4
Go out, so, once flow controller 6 is closed, this section of pit shaft just no longer produced fluid, thus air can upward onlap, entrance is next
Section pit shaft, so circulation, the heel (heel end) until burning well.
The heavy oil flow string provided in the application embodiment, by adding envelope on the blind pipe 4 in the screen casing 3 of producing well 2
Every having temperature monitoring portion 60 on device 5 and flow controller 6, the flow controller 6 in blind pipe 4, packer 5 is by the net horizontal section of producing well 2
Be separated into several sections, when combustion chamber is advanced to horizontal wellbore, now on horizontal wellbore section flow controller 6 temperature monitoring portion 60 temperature
During more than 350 DEG C, the adjustment of flow controller 6 of this section is closed, and now the pressure near flow controller 6 becomes big, avoids live wire from scurrying into pit shaft.
Air reaches along top oil reservoir onlap and burns leading edge, forms the stable combustion front to turn forward, realizes that segmentation cutting is stable
Gravity drainage development mode, as shown in figure 4, so as to avoid air from being directly entered horizontal well pit shaft, ensure that fireflood leading edge is stable and fire
Burn, there is good security and good economic benefit.
In the present embodiment, screen casing 3 is located in the net horizontal section of producing well 2.Screen slot is provided with the screen casing 3
30, for linking up pit shaft and oil reservoir, gas (vapour) liquid stream body is entered the space between screen casing 3 and blind pipe 4.
Specifically, the horizontal segment of the producing well 2 has relative a toe-end 21 and heel end 22, the screen casing 3 is from the toe
End 21 to the lengthwise of heel end 22 extends.Screen slot 30 is provided with the screen casing 3.From infiltrated zone let out under oil can pass through screen casing
3 flow into net horizontal section.
In the present embodiment, blind pipe 4 is arranged in the screen casing 3, will production by coordinating with packer 5, flow controller 6
The horizontal segment of well 2 is separated into the sub- well section that multiple controllable oil gas enter.
In the present embodiment, the number of packer 5 can be multiple.Specifically, the number of packer 5 can be according to water
Depending on the length of horizontal well section.When the length of net horizontal section is longer, accordingly, the number adaptability of packer 5 increases.Certainly,
The application is also not excluded in certain extreme cases, for example, the length of net horizontal section is shorter, it is only necessary to uses a packer 5
Situation.
In the present embodiment, flow controller 6 is the necessary channel of all fluid circulations.The number of flow controller 6 can be more
It is individual.Specifically, the number of the flow controller 6 and the number of the packer 5 match.On the whole, the number of the flow controller 6 also root
Depending on the length of net horizontal section.When the length of net horizontal section is longer, accordingly, the number adaptability of flow controller 6 increases.When
So, the application is also not excluded in certain extreme cases, for example, the length of net horizontal section is shorter, it is only necessary to uses a throttling
The situation of device 6.
In the present embodiment, the flow controller 6 has flow regulating function.Specifically, it is provided with temperature on flow controller 6
Monitoring portion 60, it is described when the temperature of pit shaft exceedes predetermined temperature near the flow controller 6 that the temperature monitoring portion 60 monitors
Flow controller 6 can close automatically.After flow controller 6 is closed, the pressure near flow controller 6 can be increased so that air reaches combustion
Leading edge is burnt, without being scurried into from the well section in pit shaft, logical, oxygen is altered so as to avoid the occurrence of live wire during horizontal well fireflood
The problem of breakthrough.
Certainly, in addition to the temperature detecting part set using flow controller 6 itself carries out temperature monitoring, can also produce
The horizontal wellbore of well 2 individually sets temperature detector, and temperature detector and flow controller 6 are electrically connected with, according to temperature detector
The temperature signal detected controls the controller that the flow controller 6 is opened and closed.
Moreover, it is judged that flow controller 6 be opened and closed condition in addition to temperature, can also be oil flow signals either both
Combination etc., specifically, the application does not make specific limit herein.
In the present embodiment, the predetermined temperature is the temperature of oily high-temperature oxydation burning.The temperature of high-temperature oxydation burning
Generally more than 350 degrees Celsius of degree.That is, the predetermined temperature is more than 350 degrees Celsius.When the temperature monitoring portion 60
When monitoring that temperature near flow controller 6 exceedes the temperature of high-temperature oxydation burning, represent now at the well section near fry dried food ingredients
High-temperature oxydation burning is given birth to, viscosity reduces, mobility improves, and can open this well section, releases the oil after this position heating viscosity reduction.
In the present embodiment, the preset distance between described two packers 5 is throwing of the infiltrated zone in net horizontal section
Shadow distance.Just may be used when the distance between two packers 5 are equal to projector distance of the infiltrated zone in net horizontal section, during draining
So that the oil in infiltrated zone is all leaked into corresponding sub- well section.Found according to actual monitoring, infiltrated zone is in net horizontal section
Projector distance is typically between 20 meters to 30 meters.Accordingly, the preset distance can be 20 meters to 30 meters.
Referring to Fig. 5, present invention also provides a kind of heavy oil oil production method, this method may include steps of：
Step S10：In the screen casing 3 of the horizontal wellbore of producing well 2 tripping in blind pipe 4, the screen casing 3 and the blind pipe 4 it
Between spaced a predetermined distance the multiple packers 5 of tripping in, tripping in has temperature on the blind pipe 4 and between two neighboring packer 5
The flow controller 6 of monitoring portion 60, the horizontal wellbore of producing well 2 is separated into multistage；
Step S12：Real time temperature monitoring is carried out by the temperature monitoring portion 60 of the flow controller 6, when the temperature monitoring
When the temperature that portion 60 monitors exceedes predetermined temperature, the flow controller 6 is closed.
Tripping in blind pipe 4 and packer 5, the section with temperature monitoring portion 60 first in the screen casing 3 of the horizontal wellbore of producing well 2
Flow device 6.As shown in Fig. 2 the horizontal wellbore of producing well 2 can be separated into several sections, shape every 30m tripping in flow controller 6 and separator
Recovered the oil into vertical segmentation.
In horizontal well fireflood production process, when combustion chamber is burned to 2 net horizontal section of producing well, this section of temperature of flow controller 6
Nearby temperature is more than 350 DEG C for monitoring display, and when air flows into flow controller 6, flow controller 6 can close automatically.Now flow controller 6 is attached
Nearly pressure uprises, and air flows forwardly into combustion front, keeps the burning of fireflood process stabilization.
As combustion process promotes, when reaching next 2 net horizontal section of producing well, flow controller 6 is as previous flow controller 6 one
Sample, temperature is too high, automatic to close, and avoids air from being directly entered horizontal wellbore generation oxygen and alters logical and burn pit shaft.
In a specific application scenarios, for example, Xinjiang Oilfield block has the characteristics that：
1. porosity spread：Area's reservoir porosity is between 27.3%~35.1%, average out to 31.5%.
2. permeability spread：Area's reservoir permeability is between 455.1mD~4708mD, average value 2437.1mD, with
Porosity correlation is stronger.
3. oil saturation spread：Between 63.8%~80.3%, average value is area's reservoir oil saturation
73.2%, oil saturation shows the low situations of Bei Gaonan.
4. core intersection spread：Area's core intersection is between 10.4~47.2m, average value 31.5m, in work area north
Portion and southern edge core intersection are relatively low.
11.7 meters of the block well group, gas injection straight well perforation bottom circle and horizontal well vertical range, the top of horizontal production well 2 oil
Thickness degree is 9.6m, and gas injection straight well is within horizontal well side 4m distances.Using heavy oil flow string provided herein and
After method carries out fireflood, following effect can be reached：Day gas injection 4400m3/ d, day oil-producing about 4.5t/d, combustion process is stable, does not have
There is generation oxygen to scurry into horizontal well.
As fully visible, the heavy oil flow string and method that the application provides, it is that one kind can control baked wheaten cake leading edge stably to push away
The technical method entered, one period is carried out in fireflood, by closing flow controller 6 according to the monitoring temperature of wellbore section, adjustment in real time,
Increase the pressure near flow controller 6 so that air reaches combustion front, ensures that fireflood process stabilization is carried out, avoids fireflood process
Oxygen occurs to horizontal wellbore and alters logical, there is good economic benefit.
On the whole, flow string and its oil production method provided herein, by the blind pipe 4 in the screen casing 3 of producing well 2
Plus packer 5 and flow controller 6, there is temperature monitoring portion 60 on the flow controller 6 in blind pipe 4, packer 5 is by the water of producing well 2
Horizontal well section is separated into several sections, when combustion chamber is advanced to horizontal wellbore, now temperature monitoring portion 60 on horizontal wellbore section flow controller 6
Temperature more than 350 DEG C when, this section flow controller 6 adjustment close, the now circulation between horizontal wellbore blind pipe 4 and flow controller 6
Passage is closed, and gas (vapour) liquid stream body does not enter back into this wellbore section, avoids live wire and oxygen from scurrying into pit shaft, combustion zone can not be pushed away normally
Enter.Air can reach along top oil reservoir onlap and burn leading edge, the stable combustion front to turn forward be formed, in next packing
The wellbore section that device 5 insulates continues stabilization and burnt, and the stable gravity drainage development mode of segmentation cutting is realized, so as to avoid air direct
Into horizontal well pit shaft, ensure that fireflood leading edge is stable and burn, there is good security and good economic benefit.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval of at least two units between any lower value and any much higher value be present.For example, such as
Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximation " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the end points indicated.
All articles and reference disclosed herein, including patent application and publication, for various purposes by helping
Draw and be hereby incorporated by.Describe the term " substantially by ... forms " of combination should include determined by element, composition, part or step with
And other elements, composition, part or step essentially without the basic novel feature for influenceing the combination.Use term "comprising"
Or " comprising " describes the combination of element here, composition, part or step it is also contemplated that substantially by these elements, composition, portion
The embodiment that part or step are formed.Here by using term " can with ", it is intended to which illustrate that " can with " includes described appoints
What attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part
Or step.
Above-mentioned each embodiment in this specification is described by the way of progressive, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiment difference.
The foregoing is only several embodiments of the invention, although disclosed herein embodiment as above, institute
Content is stated only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, do not depart from disclosed herein spirit and scope on the premise of, can be in embodiment
Formal and details on make any modification and change, but the scope of patent protection of the present invention still must be with appended claims
The scope that book is defined is defined.
Claims (10)
- A kind of 1. heavy oil flow string, it is characterised in that including：For the screen casing being arranged in net horizontal section, the screen slot for connecting oil reservoir and pit shaft is provided with the screen casing；Blind pipe, the blind pipe are arranged in the screen casing；Multiple packers, the packer are arranged in the annular space between the screen casing and the blind pipe, two neighboring packer Spaced a predetermined distance；Multiple flow controllers, the flow controller are arranged in the blind pipe, and between two neighboring packer, the flow controller On be provided with temperature monitoring portion, when the temperature that the temperature monitoring portion monitors reaches more than predetermined temperature, the flow controller closes Close.
- 2. heavy oil flow string as claimed in claim 1, it is characterised in that the preset distance is infiltrated zone in net horizontal section In projector distance.
- 3. heavy oil flow string as claimed in claim 2, it is characterised in that the preset distance is 20 meters to 30 meters.
- 4. heavy oil flow string as claimed in claim 1, it is characterised in that the predetermined temperature is the burning of oily high-temperature oxydation Temperature.
- 5. heavy oil flow string as claimed in claim 4, it is characterised in that the predetermined temperature is more than 350 degrees Celsius.
- A kind of 6. heavy oil oil production method, it is characterised in that including：Tripping in blind pipe, the tripping in spaced a predetermined distance between the screen casing and the blind pipe in the screen casing of producing well horizontal wellbore Multiple packers, tripping in has the flow controller in temperature monitoring portion on the blind pipe and between two neighboring packer, will produce Well horizontal wellbore is separated into multistage；Real time temperature monitoring is carried out by the temperature monitoring portion of the flow controller, when the temperature that the temperature monitoring portion monitors surpasses When crossing predetermined temperature, the flow controller is closed.
- 7. heavy oil oil production method as claimed in claim 6, it is characterised in that the preset distance is infiltrated zone in net horizontal section In projector distance.
- 8. heavy oil oil production method as claimed in claim 7, it is characterised in that the preset distance is 20 meters to 30 meters.
- 9. heavy oil oil production method as claimed in claim 6, it is characterised in that the predetermined temperature is the burning of oily high-temperature oxydation Temperature.
- 10. heavy oil oil production method as claimed in claim 9, it is characterised in that the predetermined temperature is more than 350 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105596.1A CN107795309B (en) | 2017-11-10 | 2017-11-10 | Heavy oil production pipe column and oil production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105596.1A CN107795309B (en) | 2017-11-10 | 2017-11-10 | Heavy oil production pipe column and oil production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107795309A true CN107795309A (en) | 2018-03-13 |
| CN107795309B CN107795309B (en) | 2020-02-14 |
Family
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| CN108590613A (en) * | 2018-03-23 | 2018-09-28 | 中国石油天然气股份有限公司 | Characterization method and device for secondary start displacement pressure of oil reservoirs at different temperatures |
| CN113803014A (en) * | 2020-06-11 | 2021-12-17 | 中国石油天然气股份有限公司 | Horizontal well plugging method |
| US20230287783A1 (en) * | 2022-03-08 | 2023-09-14 | Saudi Arabian Oil Company | Transient Pressure Data Analysis to Determine Contributing Inflow Control Devices |
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