CN107664030A - Super-heavy oil deposit horizontal well steam drives the method for improving recovery ratio - Google Patents
Super-heavy oil deposit horizontal well steam drives the method for improving recovery ratio Download PDFInfo
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- 238000010795 Steam Flooding Methods 0.000 title claims abstract description 73
- 238000011084 recovery Methods 0.000 title claims abstract description 44
- 239000000295 fuel oil Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003921 oil Substances 0.000 claims abstract description 63
- 238000011161 development Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000011160 research Methods 0.000 claims abstract description 14
- 238000005457 optimization Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000012216 screening Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 7
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000008901 benefit Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 6
- 230000005465 channeling Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 241001269238 Data Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000009671 shengli Substances 0.000 description 2
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- 241001212149 Cathetus Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
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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
- E21B43/30—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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- 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
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Abstract
The present invention provides a kind of super-heavy oil deposit horizontal well steam and drives the method for improving recovery ratio, including：Step 1, collection research block basis data, test objective area's screening is carried out；Step 2, optimize calculated level well design geology basic parameter and the note in horizontal well steam soak stage adopts parameter；Step 3, steam flooding well web form, planning deployment steam flooding well net are optimized；Step 4, optimization steam turns drive opportunity and horizontal well steam drives the note in stage and adopts parameter；Step 5, horizontal well steam drive development effect prediction is carried out, determines that horizontal well steam soak turns the ultimate recovery of steam drive development.The super-heavy oil deposit horizontal well steam drives the method for improving recovery ratio, technical support is provided rationally to carry out well pattern and well site deployment, reducing invalid or poorly efficient exploration and development input, simultaneously it can also the ultimate recovery that drives of Accurate Prediction block test objective area steam, improve recovery efficiency technique countermeasure for oil reservoir and managerial decision provide direction guidance.
Description
Technical field
The present invention relates to oil field development technical field, especially relates to a kind of super-heavy oil deposit horizontal well steam and drives raising
The method of recovery ratio.
Background technology
Since Eleventh Five-Year Plan, tackled key problems by horizontal well thermal production supporting technology and the transformation of utility strategies, Shengli Oil water in field
Horizontal well application field and scale constantly expand, and horizontal wells in heavy oil reservoir application is also changed into based on entirety by scattered, overall at present
Horizontal well is widely used in all kinds of heavy crude reservoirs such as different buried depth, different viscosities, different-thickness, is related to 18 units altogether,
Cover the more than one hundred million tons of oil in place.In recent years, horizontal well accounts for more than the 50% of heavy crude heat extraction stepout well, wherein integral level well accounting
More and more higher, reach 60%~80%, more than million tons, horizontal well plays yearly rate-oil production in Shengli Oil Field heavy crude heat extraction
Important function.
From development scheme, existing horizontal wells in heavy oil reservoir is developed in a manner of steam soak, HDCS, HDNS etc.,
Predict that main integral level well development heavy oil block average throughput recovery ratio is only 18.5%, recovery ratio is low, and remaining oil is rich between well
Collection.And with the increase in cycle of handling up, rate of oil production, single well productivity, production per cycle and gas oil ratio gradually reduce, and aqueous
Gradually rise, economic benefit is deteriorated.Block recovery ratio is employed, it is necessary to turn steam drive in good time to increase substantially integral level well.
In theory, horizontal wells in heavy oil reservoir steam, which drives to drive than straight well steam, has some superiority.Straight well is radially
Displacement, horizontal well are linear displacement, and horizontal well is more balanced than straight well displacement.Straight well drives latter stage saturation field with horizontal well vapour
It has been shown that, the last saturation field development condition of horizontal well steam drive vapour drive is good, and steam zone is big, and straight well steam drives steam ripple
And scope is relatively small, nearby also there are a large amount of remaining oils in corner well.
Horizontal wells in heavy oil reservoir steam drives and there is no successfully precedent both at home and abroad at present, lacks the guidance of theory and practice.Existing
In the practice of field, horizontal well steam drives and is also faced with a series of technological challenge, as horizontal wells in heavy oil reservoir steam drives percolation law
Recognize unclear, horizontal well vapour drives well pattern form and required study, and influences horizontal well steam and drive effect factor to need to further investigate, different
Oil Reservoir Types horizontal well steam drive boundary difference on earth where etc..Horizontal well steam flooding well web form and straight well are completely not
Together, it is linearly to drive that horizontal well steam, which drives, and its steam flooding well wet end administration has larger difference, external Wilmington oil field TAR with straight well
V horizontal wells steam drives trial zone because well number limits, and it is the face formula well pattern adopted of two notes three, and to integral level wellblock block,
How its flooding pattern form configures, and does not have precedent also both at home and abroad, need to study different well pattern forms and different type oil reservoir is fitted
Ying Xing.The method for improving recovery ratio is driven we have invented a kind of new super-heavy oil deposit horizontal well steam for this, solves the above
Technical problem.
The content of the invention
Driven it is an object of the invention to provide a kind of new super-heavy oil deposit horizontal well steam and improve recovery ratio method, Neng Gouwei
Rationally carry out well pattern and well site deployment, invalid or poorly efficient exploration and development input offer technical support is provided, harvesting is improved for oil reservoir
Rate technical cue and managerial decision provide direction and instructed.
The purpose of the present invention can be achieved by the following technical measures：Super-heavy oil deposit horizontal well steam, which drives, improves recovery ratio
Method, the method that the super-heavy oil deposit horizontal well steam drives raising recovery ratio include：Step 1, collection research block basis data,
Carry out test objective area's screening；Step 2, calculated level well design geology basic parameter and horizontal well steam soak stage are optimized
Note adopts parameter；Step 3, steam flooding well web form, planning deployment steam flooding well net are optimized；Step 4, optimization steam turns drive opportunity
The note that the stage is driven with horizontal well steam adopts parameter；Step 5, horizontal well steam drive development effect prediction is carried out, determines that horizontal well steams
Vapour, which is handled up, turns the ultimate recovery of steam drive development.
The purpose of the present invention can be also achieved by the following technical measures：
In step 1, the research block basis data of collection include the research reservoir buried depth of block, effective pay thickiness,
These bases of reservoir physical parameter, reservoir fluid properties, reservoir temperature, strata pressure, Oil Reservoir Types and producing well development behavior
Data.
In step 1, when carrying out the screening of test objective area, the geology reservoir of block and viscous oil field operated by steam are sieved
Select standard to be contrasted, see whether it meets the requirement of steam drive development, block geology reservoir is meeting certain a kind of viscous crude
While Reservoir With Steam drives screening criteria, also need to follow researcher according to the steam formulated after live actual production regularity summarization
Drive constituency principle.
In step 2, optimize calculating horizontal well design geology basic parameter include Horizontal Well away from, array pitch, horizontal segment
Length and lengthwise position.
In step 2, the horizontal well steam soak stage note of optimization, which adopts parameter, includes horizontal well steam injection intensity, viscosity reduction
Agent cyclic injection amount, CO2Cyclic injection amount, maximum lifting rate.
In step 3, when optimizing steam flooding well web form, consider that all possible vapour drives well pattern combining form, synthesis is commented
The economic benefit that the respective adaptability of valency difference well pattern form and test objective area steam drive, in combination with by studying area
Block carries out oil reservoir oil saturation field, pressure field and the temperature field that reservoir numerical simulation is studied to obtain, preferentially using adaptability
By force, the well pattern combining form that effect is good, economic benefit is big is employed.
In step 3, steam flooding well net considers five kinds of combinations, is horizontal well combination row well pattern, level respectively
Well group closes inverted five spot well pattern, horizontal well combination inverted nine-spot pattern, anti-9 points of horizontal well combination turns inverted five spot well pattern, horizontal well combines
Anti- 9 points turn row well pattern.
In step 3, during planning deployment steam flooding well net, geology reservoir, Production development, old well hole condition are considered
And the optimal well pattern form that optimization obtains, rationally carry out studying block well pattern and well site deployment.
In step 4, when optimization steam turns drive opportunity, by carrying out real-time tracking monitoring to formation pressure, level is worked as
Well steam soak to reservoir pressure be down in the range of the 40%~60% of original formation pressure when, it then follows channeling well row first occurs first
The principle turned, the reasonable turn drive pressure for determining oil reservoir and oil well turn drive order.
In step 4, the note in the horizontal well steam drive stage of optimization, which adopts parameter, includes horizontal well steam steam injection rate, steam injection
Mass dryness fraction, production-injection ratio.
Super-heavy oil deposit horizontal well steam in the present invention, which drives, improves recovery ratio method, suitable for different type heavy crude reservoir
Steam soak turns steam and drives the research for improving recovery ratio flow, the mid-deep strata or shallow being particularly suitable for use in using integral level well development
Thin layer super-heavy oil deposit.Party's law theory combines actual, the evaluation of integrated use reservoir geology, reservoir engineering dynamic analysis, viscous crude
The multiple means such as Comparison of standards, reservoir numerical simulation are developed, rationally preferred and quantitative optimization is carried out to block development index, is selected
Parameter be all the actual static parameter of this oil reservoir and empirical data that dynamic data or same type oil reservoir are successfully developed, calculated value
The relatively actual rule of this oil reservoir exploitation.This method can be handled up as Reservoir With Steam the later stage turn steam drive research
Flow, technical support is provided rationally to carry out well pattern and well site deployment, reducing invalid or poorly efficient exploration and development input, while it is also
The ultimate recovery that energy Accurate Prediction block test objective area steam drives, recovery efficiency technique countermeasure and managerial decision are improved for oil reservoir
Direction is provided to instruct.
Brief description of the drawings
Fig. 1 is that the super-heavy oil deposit horizontal well steam of the present invention drives the flow for the specific embodiment of method one for improving recovery ratio
Figure；
Fig. 2 is level of production well location oil reservoir produced degree pair when different longitudinal position in a specific embodiment of the invention
Compare block diagram；
Fig. 3 is oil reservoir produced degree pair when steam injection horizontal well is located at different longitudinal position in a specific embodiment of the invention
Compare block diagram；
Fig. 4 is that horizontal well combines row well pattern schematic diagram in a specific embodiment of the invention；
Fig. 5 is that horizontal well combines inverted five spot well pattern schematic diagram in a specific embodiment of the invention；
Fig. 6 is that horizontal well combines inverted nine-spot pattern schematic diagram in a specific embodiment of the invention；
Fig. 7 is that anti-9 points of horizontal well combination turns inverted five spot well pattern schematic diagram in a specific embodiment of the invention；
Fig. 8 is that anti-9 points of horizontal well combination turns row well pattern schematic diagram in a specific embodiment of the invention.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation
Example, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, the method one that the super-heavy oil deposit horizontal well steam that Fig. 1 is the present invention drives raising recovery ratio is specifically real
Apply the flow chart of example.
By taking certain block as an example, illustrate that super-heavy oil deposit horizontal well steam drives the implementing procedure for the method for improving recovery ratio.
In a step 101, the basic data of collection research block, the mainly reservoir buried depth of collection research block, oil reservoir
Effective thickness, reservoir physical parameter, reservoir fluid properties, reservoir temperature, strata pressure, Oil Reservoir Types and producing well development behavior
Etc. basic data.
In the present embodiment, certain block oil area 2.97km2, verified oil oil in place 386 × 104t.Oil reservoir buried depth-
1300~-1430m, 2~12m of core intersection, average pore 32.8%, mean permeability 4913mD, belong to high hole, hypertonic storage
Layer.Stock tank oil viscosity 22 × 10 at 50 DEG C4MPas~38 × 104MPas, ground deaerates under reservoir temperature (68 DEG C)
Viscosity of crude is more than 12 × 104MPas, for tool side, construction-lithology super-heavy oil deposit of bottom water.The block used water from 2007
Horizontal well HDCS steam soaks are developed so far, total 34 mouthfuls of brought in well number, individual well day oil productive capacity 9.8t/d, comprehensive water cut 69%, are tired out
Product oil-producing 27.73 × 104T, accumulate steam injection 33.68 × 104T, recovery percent of reserves 13.0%, single well stimulation cycle average out to 6~7,
It is up to 11 cycles, strata pressure 6MPa or so.
In a step 102, test objective area is screened, by the geology reservoir of block and Steam Flooding Sorting Heavy Oil Reservoir mark
Standard is contrasted, and sees whether it meets the requirement of steam drive development, block geology reservoir meet or substantially conform to it is a certain
While class Steam Flooding Sorting Heavy Oil Reservoir standard, also need to follow researcher according to being formulated after live actual production regularity summarization
Steam drive constituency principle.
In the present embodiment, screening criteria is driven according to steam, it then follows 3 constituencies in the test objective area that researcher formulates
Principle：1. edge-bottom water is inactive；2. there is certain reserves scale, well pattern improvement degree is high；3. close to or up turning drive opportunity,
It is representative strong；The block is filtered out in 9 fairly perfect blocks of well pattern closest to turning drive opportunity, therefore as trial zone
Block.
Although the current development effectiveness of the block is well, existing thick oil horizontal well HDCS modes are developed, and remaining oil is rich between well
Collection, forecast recovery factor are low.And with the increase in cycle of handling up, rate of oil production, single well productivity, production per cycle and gas oil ratio by
Gradually reduce, and it is aqueous gradually rise, economic benefit be deteriorated.For increase substantially integral level well employ block recovery ratio, it is necessary to
Turn steam drive in good time.For reservoir geology feature, oil property and the development contradiction in test objective area, scientific research personnel determines examination
Test the selection principle in area：1. influenceed by edge water incursion it is small, it is aqueous low；2. well pattern improvement, well track is good；3. formation pressure is relatively low；
4. remaining oil saturation more than 40%, has certain material base；5. data is relatively complete.
On the basis of mentioned above principle, researcher filters out test objective area, including 17 mouthfuls of water at the block main body position
Horizontal well, trial zone area 0.54km2, oil in place 87 × 104t。
In step 103, optimize calculated level well design geology basic parameter, mainly include Horizontal Well away from, array pitch, water
Flat segment length and lengthwise position etc..
In the present embodiment, optimum results are that Horizontal Well is left away from 100m, array pitch 100m, producing well horizontal section length 200m
The right side, steam injection well horizontal section length is in 160m or so, and producing well is located at oil reservoir middle and lower part, and (horizontal well is away from top of oil horizon about 4/5
Place), steam injection well location is in oil reservoir middle and upper part (horizontal well away from top of oil horizon about 2/5 at).Fig. 2~Fig. 3 is that of the invention one is specific
Horizontal well steam expelling water horizontal well is located at oil reservoir produced degree contrast block diagram during different longitudinal position in embodiment, wherein, Fig. 2 is
The optimum results of producing well, Fig. 3 are the optimum results of steam injection well.
At step 104, the note in optimum level well steam soak stage adopts parameter, including horizontal well steam injection intensity,
Thinner cyclic injection amount, CO2Cyclic injection amount, maximum lifting rate etc..
In the present embodiment, when optimum results is turn HDCS mode steam soaks before driving, horizontal well steam injection intensity is big
About 12.5t/m, thinner cyclic injection amount are 0.2t/m~0.3t/m, CO2Cyclic injection amount is 0.75t/m, maximum lifting rate
60m3/d。
In step 105, optimize steam flooding well web form, consider that all possible vapour drives well pattern combining form, synthesis is commented
The economic benefit that the respective adaptability of valency difference well pattern form and test objective area steam drive, in combination with by studying area
Block carries out oil reservoir oil saturation field, pressure field and the temperature field that reservoir numerical simulation is studied to obtain, preferentially using adaptability
By force, the well pattern combining form that effect is good, economic benefit is big is employed.
In the present embodiment, steam flooding well host will consider five kinds of combinations, be horizontal well combination row pattern well respectively
Net, horizontal well combination inverted five spot well pattern, horizontal well combination inverted nine-spot pattern, horizontal well combine at anti-9 points and turn inverted five spot well pattern, water
Horizontal well combines at anti-9 points and turns row well pattern.Fig. 4~Fig. 8 is that horizontal well steam drives different well patterns in a specific embodiment of the invention
Form schematic diagram, wherein, each figure cathetus represents horizontal well, and the straight line of no arrow represents producing well, with the straight of arrow logo
Line represents steam injection well.
As shown in Table 1 and Table 2, it is suitable to turn the drive of row well pattern steam for horizontal well combination row well pattern and anti-9 points of horizontal well combination
Should be able to power it is strong.Meanwhile found by optimizing, poor or stronger anisotropism oil reservoir, horizontal well combination are controlled in wellbore trace
Anti- 9 points turn the better economic benefit that row well pattern or horizontal well combination row well pattern steam drive.Horizontal well combination row well pattern,
Horizontal well combination inverted five spot well pattern, horizontal well combination inverted nine-spot pattern, horizontal well combine at anti-9 points and turn inverted five spot well pattern, horizontal well
Combine at anti-9 points and turn row well pattern, this five kinds of well pattern vapour driving oil recovery yield prediction results show, anti-9 points of horizontal well combination turns row
Shape well pattern vapour driving oil recovery high income.From the point of view of five kinds of well pattern steam drive latter stage oil reservoir oil saturation field, horizontal well combination row pattern
Employed between well pattern steam flooding well, difference is employed between row；Horizontal well combination inverted five spot well pattern steam drive steam injection rate is low, non-heating zone
Employ difference in domain；Horizontal well combination inverted nine-spot pattern steam drives steam injection rate height, and central area displacement is preferable, because the row's well of east one gulps down
Stage hot serious interference is told, east displacement is poor；Anti- 9 points of horizontal well combination turns inverted five spot well pattern, and steam drives part and still employed
It is unbalanced；Anti- 9 points of horizontal well combination turns row well pattern, and the steam drive row's well of east one, which is employed, to make moderate progress, it is contemplated that turns row pattern and shows
Easily operated management, recommend the block steam flooding well web form to turn row well pattern for anti-9 points of horizontal well combination, suggested design with
Handle up and compare, recovery ratio 20.8% can be improved.
The different well pattern form adaptability comprehensive evaluation forms of table 1
The different well pattern form comprehensive economic return evaluation tables of table 2
In step 106, planning deployment steam flooding well net, considers geology reservoir, Production development, old well hole condition
And the optimal well pattern form recommended in step 105, rationally carry out studying block well pattern and well site deployment.
In the present embodiment, with reference to geology reservoir, Production development, hole condition and the well pattern form of recommendation, testing
Target area deployment horizontal well combination inverted nine-spot pattern steam flooding well group 2, after turn row pattern steam flooding well group 7.
In step 107, optimization steam turns drive opportunity, by carrying out real-time tracking monitoring to formation pressure, works as level
Well steam soak to reservoir pressure be down in the range of the 40%~60% of original formation pressure when, it then follows channeling well row first occurs first
The principle turned, the reasonable turn drive pressure for determining oil reservoir and oil well turn drive order.
In the present embodiment, current strata pressure 6MPa of the block or so, it is close to turn drive opportunity.Pass through numerical simulation of optimum
Research, the block turn 45% left side that anti-9 steam drives opportunity and original formation pressure is down in HDCS steam soaks to reservoir pressure
The right side, turn row pattern steam and drive opportunity after inverted nine-spot pattern produces 2 years, it then follows the principle that the well row of channeling first turns first occurs.
In step 108, optimum level well steam drives the note in stage and adopts parameter, including horizontal well steam steam injection rate, note
Vapour mass dryness fraction, production-injection ratio etc..
In the present embodiment, after turning steam drive, it is ensured that shaft bottom mass dryness fraction reaches more than 40%, obtains oil reservoir and preferably opens
Effect is sent out, inverted nine-spot pattern well group steam injection rate is 8.1t/h~9t/h, and the steam injection rate that is averaged is 8.6t/h or so, row well pattern
Steam injection well speed is 3.8t/h~5.4t/h, average steam injection rate 4.3t/h~4.6t/h.For ensure higher recovery percent of reserves and
Net oil production, recommend vapour driving oil recovery note than being not less than 1.2.
In step 109, prediction level well steam drive development effect, determine that horizontal well steam soak turns steam drive development
Ultimate recovery.
In the present embodiment, in terms of numerical simulation of optimum final result, the block combines at anti-9 points using horizontal well and turns row pattern
After well pattern steam drives, development effectiveness is preferable, compared with handling up, ultimate recovery can be made to improve 20.8%.
Claims (10)
1. super-heavy oil deposit horizontal well steam drives the method for improving recovery ratio, it is characterised in that the super-heavy oil deposit horizontal well steams
The method that vapour drives raising recovery ratio includes：
Step 1, collection research block basis data, test objective area's screening is carried out；
Step 2, optimize calculated level well design geology basic parameter and the note in horizontal well steam soak stage adopts parameter；
Step 3, steam flooding well web form, planning deployment steam flooding well net are optimized；
Step 4, optimization steam turns drive opportunity and horizontal well steam drives the note in stage and adopts parameter；
Step 5, horizontal well steam drive development effect prediction is carried out, determines that horizontal well steam soak turns the final of steam drive development and adopted
Yield.
2. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 1, the research block basis data of collection includes the reservoir buried depth of research block, effective pay thickiness, reservoir properties ginseng
Number, reservoir fluid properties, reservoir temperature, strata pressure, Oil Reservoir Types and producing well development behavior these basic datas.
3. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 1, when carrying out the screening of test objective area, the geology reservoir of block and Steam Flooding Sorting Heavy Oil Reservoir standard are carried out
Contrast, sees whether it meets the requirement of steam drive development, block geology reservoir is meeting certain a kind of viscous oil field operated by steam
While screening criteria, also need to follow researcher according to the steam drive constituency original formulated after live actual production regularity summarization
Then.
4. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 2, optimize the horizontal well design geology basic parameter of calculating include Horizontal Well away from, array pitch, horizontal section length and longitudinal direction
Position.
5. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 2, the horizontal well steam soak stage note of optimization, which adopts parameter, includes horizontal well steam injection intensity, the injection of thinner cycle
Amount, CO2Cyclic injection amount, maximum lifting rate.
6. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 3, when optimizing steam flooding well web form, consider that all possible vapour drives well pattern combining form, overall merit difference well pattern
The economic benefit that the respective adaptability of form and test objective area steam drive, in combination with by carrying out oil reservoir to research block
Oil reservoir oil saturation field, pressure field and the temperature field that numerical simulation study obtains, preferentially use is adaptable, employs effect
Well pattern combining form good, economic benefit is big.
7. super-heavy oil deposit horizontal well steam according to claim 6 drives the method for improving recovery ratio, it is characterised in that
In step 3, steam flooding well net considers five kinds of combinations, is horizontal well combination row well pattern, horizontal well combination anti-five respectively
Point well pattern, horizontal well combination inverted nine-spot pattern, anti-9 points of horizontal well combination turns inverted five spot well pattern, anti-9 points of horizontal well combination turns row
Shape well pattern.
8. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 3, when steam flooding well net is disposed in planning, consider geology reservoir, Production development, old well hole condition and optimize
The optimal well pattern form arrived, rationally carry out studying block well pattern and well site deployment.
9. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 4, when optimization steam turns drive opportunity, by carrying out real-time tracking monitoring to formation pressure, when horizontal well steam soak
When being down to reservoir pressure in the range of the 40%~60% of original formation pressure, it then follows the principle that channeling well row first turns first occurs, closes
Reason determine oil reservoir turn to drive pressure and oil well turn drive order.
10. super-heavy oil deposit horizontal well steam according to claim 1 drives the method for improving recovery ratio, it is characterised in that
In step 4, the note in the horizontal well steam drive stage of optimization adopts parameter and includes horizontal well steam steam injection rate, steam injection mass dryness fraction, adopts
Note ratio.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109113731A (en) * | 2018-07-16 | 2019-01-01 | 中国石油天然气股份有限公司 | Straight well horizontal well combined steam drives thickened oil recovery physical simulation system and method |
| CN110080734A (en) * | 2019-04-17 | 2019-08-02 | 中国石油化工股份有限公司 | Method of Compound Development is let out in the drive of shallow-thin layer bottom water viscous crude |
| CN110359892A (en) * | 2019-08-07 | 2019-10-22 | 刘涛 | A kind of steam drive scheme optimization design method based on reservoir condition |
| CN111460647A (en) * | 2020-03-30 | 2020-07-28 | 中国石油化工股份有限公司 | Quantitative allocation method for horizontal well segmented targeted steam injection amount after multi-round huff and puff |
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| CN112228023A (en) * | 2019-06-28 | 2021-01-15 | 中国石油化工股份有限公司 | Thick oil steam flooding periodic injection and production method |
| CN112796745A (en) * | 2021-02-18 | 2021-05-14 | 中海油田服务股份有限公司 | Method and device for determining production dynamic data of steam flooding oil reservoir |
| CN113586041A (en) * | 2020-04-30 | 2021-11-02 | 中国石油天然气股份有限公司 | Method for generating steam distribution plan of heavy oil well |
| CN114033342A (en) * | 2020-07-21 | 2022-02-11 | 中国石油化工股份有限公司 | Viscosity reduction driving method for realizing effective use of deep low-permeability thickened oil |
| CN114622881A (en) * | 2020-12-14 | 2022-06-14 | 中国石油化工股份有限公司 | Low-permeability heavy oil reservoir viscosity-reduction pressure-reduction driving exploitation method |
| CN114753813A (en) * | 2021-01-11 | 2022-07-15 | 中国石油化工股份有限公司 | Method for improving recovery ratio in high water-containing stage of active edge-bottom water heavy oil reservoir |
| CN114810019A (en) * | 2022-04-15 | 2022-07-29 | 中国石油化工股份有限公司 | Development method of imbricated narrow strip edge water heavy oil reservoir |
| CN114961677A (en) * | 2021-02-19 | 2022-08-30 | 中国石油天然气股份有限公司 | Horizontal well steam flooding thickened oil exploitation simulation experiment device and method |
| CN115247551A (en) * | 2021-04-26 | 2022-10-28 | 中国石油天然气股份有限公司 | Method and device for improving recovery ratio of super heavy oil reservoir |
| CN115306361A (en) * | 2021-05-08 | 2022-11-08 | 中国石油化工股份有限公司 | Method for optimizing injection parameters of anti-swelling agent during conversion of oil reservoir into thermal chemical steam flooding |
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| CN109113731A (en) * | 2018-07-16 | 2019-01-01 | 中国石油天然气股份有限公司 | Straight well horizontal well combined steam drives thickened oil recovery physical simulation system and method |
| CN110080734A (en) * | 2019-04-17 | 2019-08-02 | 中国石油化工股份有限公司 | Method of Compound Development is let out in the drive of shallow-thin layer bottom water viscous crude |
| CN112228023A (en) * | 2019-06-28 | 2021-01-15 | 中国石油化工股份有限公司 | Thick oil steam flooding periodic injection and production method |
| CN110359892A (en) * | 2019-08-07 | 2019-10-22 | 刘涛 | A kind of steam drive scheme optimization design method based on reservoir condition |
| CN111460647A (en) * | 2020-03-30 | 2020-07-28 | 中国石油化工股份有限公司 | Quantitative allocation method for horizontal well segmented targeted steam injection amount after multi-round huff and puff |
| CN113586041B (en) * | 2020-04-30 | 2023-12-26 | 中国石油天然气股份有限公司 | Method for generating steam distribution plan of thick oil well |
| CN113586041A (en) * | 2020-04-30 | 2021-11-02 | 中国石油天然气股份有限公司 | Method for generating steam distribution plan of heavy oil well |
| CN114033342A (en) * | 2020-07-21 | 2022-02-11 | 中国石油化工股份有限公司 | Viscosity reduction driving method for realizing effective use of deep low-permeability thickened oil |
| CN112036033A (en) * | 2020-08-31 | 2020-12-04 | 中国海洋石油集团有限公司 | Method for quantitatively determining time for converting steam huff-puff to steam flooding formation temperature |
| CN114622881A (en) * | 2020-12-14 | 2022-06-14 | 中国石油化工股份有限公司 | Low-permeability heavy oil reservoir viscosity-reduction pressure-reduction driving exploitation method |
| CN114753813A (en) * | 2021-01-11 | 2022-07-15 | 中国石油化工股份有限公司 | Method for improving recovery ratio in high water-containing stage of active edge-bottom water heavy oil reservoir |
| CN112796745A (en) * | 2021-02-18 | 2021-05-14 | 中海油田服务股份有限公司 | Method and device for determining production dynamic data of steam flooding oil reservoir |
| CN114961677A (en) * | 2021-02-19 | 2022-08-30 | 中国石油天然气股份有限公司 | Horizontal well steam flooding thickened oil exploitation simulation experiment device and method |
| CN115247551A (en) * | 2021-04-26 | 2022-10-28 | 中国石油天然气股份有限公司 | Method and device for improving recovery ratio of super heavy oil reservoir |
| CN115247551B (en) * | 2021-04-26 | 2024-06-04 | 中国石油天然气股份有限公司 | Method and device for improving recovery ratio of super heavy oil reservoir |
| CN115306361A (en) * | 2021-05-08 | 2022-11-08 | 中国石油化工股份有限公司 | Method for optimizing injection parameters of anti-swelling agent during conversion of oil reservoir into thermal chemical steam flooding |
| CN115387767A (en) * | 2021-05-20 | 2022-11-25 | 中国石油化工股份有限公司 | Steam huff-puff effect-inducing superposition viscosity reducer flooding method for deep extra-heavy oil reservoir |
| CN114810019A (en) * | 2022-04-15 | 2022-07-29 | 中国石油化工股份有限公司 | Development method of imbricated narrow strip edge water heavy oil reservoir |
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Application publication date: 20180206 |