CN108825190A - The determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity - Google Patents
The determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity Download PDFInfo
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- CN108825190A CN108825190A CN201810591873.2A CN201810591873A CN108825190A CN 108825190 A CN108825190 A CN 108825190A CN 201810591873 A CN201810591873 A CN 201810591873A CN 108825190 A CN108825190 A CN 108825190A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000000295 fuel oil Substances 0.000 title claims abstract description 30
- 238000010794 Cyclic Steam Stimulation Methods 0.000 title claims abstract description 24
- 239000003921 oil Substances 0.000 claims abstract description 52
- 238000009825 accumulation Methods 0.000 claims abstract description 36
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000011156 evaluation Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000001020 rhythmical effect Effects 0.000 claims abstract description 8
- 238000011161 development Methods 0.000 claims description 11
- 238000012067 mathematical method Methods 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000001186 cumulative effect Effects 0.000 abstract 1
- 238000005457 optimization Methods 0.000 abstract 1
- 239000009671 shengli Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012887 quadratic function Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
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- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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Abstract
The present invention provides a kind of determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity, including：Step 1, steam soak period oil production is predicted using reservoir numerical simulation；Step 2, using dynamic economy evaluation method, day degree net present value (NPV) in each steam soak period is calculated；Step 3, it calculates and accumulates net present value (NPV) in steam soak each period；Step 4, the rhythmic accumulation net present value (NPV) of steam soak institute is calculated；Step 5, all period accumulation net present value (NPV)s of steam soak under different turn-week day oil-producings are calculated；Step 6, the relation curve for calculating different turn-week day before yesterday oil-producings and accumulation net present value (NPV) seeks the best turn-week day oil-producing under cumulative maximum net present value (NPV) as turn-week opportunity using mathematical optimization method.This method is based on reservoir numerical simulation, and combine dynamic economy evaluation, seek using financial net present value as the best turn-week day oil-producing of the steam soak under the maximization of economic benefit of target, to economically and efficiently carry out the work of steam soak turn-week, instructs oil field production practices.
Description
Technical field
The present invention relates to oil field development technical field, a kind of factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity is especially related to
Determine method.
Background technique
Since " 15 ", Shengli Oil Field by research of technique, it is mating form viscous crude encryption handle up, super―heavy oil, sensitivity
Property viscous crude, heat chemistry handle up, the development technique such as thin layer, bottom water, shallow super heavy oil viscous crude, continually strengthen that old area is taped the latent power and new district is thrown
Enter, realizes being substantially increased for Shengli Viscous Crude Oil yield.By the end of the year 2015, Shengli Oil Field heavy oil production is up to 5,250,000 tons, accounts for victory
Sharp total field putput 19.3%, wherein 499.1 ten thousand tons of steam soak oil-producing, account for the 95.0% of total output, and steam drives yield 26.1
Ten thousand tons, account for 5.0%.
With the increase of production round, the effect of steam soak is gradually deteriorated, the end of the year 2015, Shengli Oil Field steam-stimulated well
In the multi-round in 6 periods or more handle up well up to 1400 mouthfuls, account for the 31.3% of total well number.After handling up into multi-round, individual well week
Phase oil production drops to 1200t hereinafter, period gas oil ratio drops to 0.6 or so, and the period, aqueous gradually rise reached 90% or more,
Period effect is gradually deteriorated.Heavy crude reservoir is generally in " high coherence, High water cut, low yield, low gas oil ratio, middle high recovery percent of reserves "
Stage, and waterflooding development is compared, heavy crude heat extraction single well productivity is relatively high, but the measure costs such as turn-week, steam injection are high, operating cost
It is high.Under the conditions of current low oil price, need further to deepen research, reduce heavy oil development cost, improve heavy oil development quality and
Benefit leads viscous crude upgrading synergy work upgrading.
However current oil price is sluggish, cost rises in situation, to further decrease development cost, improve development quality and
Benefit necessarily just is formed the technical limits and applicable elements of every steam soak upgrading synergy countermeasure.Determine that reasonable steam gulps down
Spitting turn-week opportunity is one of the effective way for realizing cost efficiency, but due to utilizing statistical work measurement period day oil-producing, really
Determine turn-week opportunity heavy workload.It is steam soak upgrading synergy it is therefore desirable to carry out steam soak turn-week opportunity optimizing research
Basis is carried out in work.For this purpose, we have invented a kind of determination method suitable for factor of cyclic steam stimulation in heavy oil reservoir exploitation turn-week opportunity,
Solves the above technical problem.
Summary of the invention
The object of the present invention is to provide one kind to be based on reservoir numerical simulation, and combines dynamic economy evaluation, with mathematics side
Method is sought using financial net present value as the heavy crude reservoir of the best turn-week day oil-producing of the steam soak under the maximization of economic benefit of target
The determination method on steam soak turn-week opportunity.
The purpose of the present invention can be achieved by the following technical measures：The determination side on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity
The determination method of method, the factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity includes：Step 1, it is gulped down using reservoir numerical simulation prediction steam
Spit the daily oil production in each period；Step 2, using dynamic economy evaluation method, the day degree for calculating steam soak each period is net
Present worth；Step 3, the accumulation net present value (NPV) in steam soak each period is calculated；Step 4, it is rhythmic tired to calculate steam soak institute
Product net present value (NPV)；Step 5, the rhythmic accumulation net present value (NPV) of steam soak institute under different turn-week day oil-producings is calculated；Step 6, it draws
The relation curve of the lower accumulation net present value (NPV) of different day oil-producings, seeks steam soak turn-week opportunity.
The purpose of the present invention can be also achieved by the following technical measures：
In step 1, it using numerical reservoir simulation method, predicts steam soak development effectiveness, and counts each period
Day oil-producing.
In step 1, it is assumed that each front lower day oil-producing of steam soak turn-week is some definite value.
In step 2, using dynamic economy evaluation method, according to the period of prediction day oil-producing data, day in calculating cycle
Spend net present value (NPV).
In step 3, it adds up to the day degree net present value (NPV) in the period, seeks the accumulation net present value (NPV) in the period.
In step 3, accumulation net present value (NPV) should be greater than 0 in the period of calculating.
In step 4, accumulation calculating is carried out to all periods of the accumulation net present value (NPV) greater than 0 in period.
In steps of 5, step 1-4 is repeated, the rhythmic accumulation of steam soak institute calculated under different turn-week day oil-producings is net
Present worth；It is transferred in step 6 later.
In step 6, different turn-week day oil-producings are drawn in tables of data with corresponding accumulation net present value (NPV) scatterplot data.
In step 6, using mathematical method, One- place 2-th Order function regression is carried out to scatterplot data, and pass through mathematical method
Function maxima is sought, corresponding day oil-producing value is reasonable turn-week opportunity under the maximum value.
In step 6, accumulation net present value (NPV) NPV and day oil-producing QoBetween have following functional relation：
NPV=aQo 2+bQo+c
In formula,
NPV- accumulates net present value (NPV)；
QoDay oil-producing；
A, the coefficient for the One- place 2-th Order function that b, c- are returned.
The determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity of the invention, by the thermal recovery number for setting up typical oil reservoir
It is worth simulation model, predicts steam soak development effectiveness, according to financial net present value calculation method, considers the time value, calculate steam
It handles up and accumulates net present value (NPV) in developing, and utilize mathematical method, turn to mathematics target to accumulate net cash value maximum, calculate best
Turn-week day oil-producing, thus economically and efficiently carry out steam soak turn-week work, instruct oil field production practices.The present invention is abundant
A kind of determination method on factor of cyclic steam stimulation in heavy oil reservoir of consideration technology and economic factor reasonable turn-week opportunity.
Detailed description of the invention
Fig. 1 is a kind of process of one specific embodiment of determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity of the invention
Figure.
Fig. 2 is the day degree net present value (NPV) and accumulation that the 1st period and the 2nd period are sought in a specific embodiment of the invention
The schematic graph of net present value (NPV)；
Fig. 3 be a specific embodiment of the invention seek under best turn-week day oil-producing turn-week day oil-producing and accumulation net present value (NPV)
Curve graph.
Specific embodiment
To enable above and other objects, features and advantages of the invention to be clearer and more comprehensible, preferably implementation is cited below particularly out
Example, and cooperate institute's accompanying drawings, it is described in detail below.
As shown in FIG. 1, FIG. 1 is the flow charts of a kind of determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity.
In a step 101, the numerical simulation conceptual model of typical Oil Reservoir Types is set up using reservoir numerical simulation software.
Using numerical reservoir simulation method, steam soak development effectiveness is predicted, and count the day oil-producing in each period.It is assumed that steaming every time
The vapour front lower day oil-producing of turn-week of handling up is some definite value.In one embodiment, it is established that weak side water common heavy oil reservoir concept mould
Type, and assume that steam soak turn-week day before yesterday oil-producing is set as 1.0t/d.Carry out steam soak using numerical simulation and predicted for 10 week
Phase, and count the day oil-producing data in each period.Process enters step 102.
The day degree net present value (NPV) in each period is calculated according to day oil-producing data using dynamic economy evaluation method in step 102；
Process enters step 102.
It in step 103, adds up to the day degree net present value (NPV) in each period, acquires period accumulation net present value (NPV).Meanwhile it is split
The period accumulation cycle data of the net present value (NPV) less than 0 in hair later period is deleted, and the rhythmic accumulation of institute retained before this is net
Present worth data.Process enters step 104.
It in step 104, adds up to the accumulation net present value (NPV) data in each period, it is net existing to acquire steam soak exploitation accumulation
Value.Fig. 2 is the profile (the 1st period and the 2nd period) of step 102-104 day degree net present value (NPV) and accumulation net present value (NPV).Process into
Enter to step 105.
In step 105, steam soak turn-week day before yesterday oil-producing is changed, step 101-104 is repeated, calculates different daily outputs
Accumulation net present value (NPV) under oil.Then the accumulation net present value (NPV) scatterplot data under different turn-week day oil-producings are drawn in tables of data.Stream
Journey enters step 106.
It is plotted in tables of data in step 106, and by the accumulation net present value (NPV) scatterplot data under different turn-week day oil-producings.Using
Mathematical method carries out One- place 2-th Order function regression to scatterplot data, and seeks maximum value, and the day oil-producing under the maximum value is to close
The turn-week opportunity of reason.Accumulate net present value (NPV) NPV and day oil-producing QoBetween have following functional relation：
NPV=aQo 2+bQo+c
In formula,
NPV- accumulates net present value (NPV)；
QoDay oil-producing；
A, the coefficient for the One- place 2-th Order function that b, c- are returned.
Fig. 3 is different day oil-producings and accumulation net present value (NPV) curve.The quadratic function of recurrence is：
Y=-27497x2+132609x+548627
Using quadratic function apex coordinate formula, can find out Grade cut-off is：708509 yuan, corresponding day oil-producing
For：2.41t/d, this value are best turn-week day oil-producing under steam soak, when indicating that same day oil-producing has reached 2.41t/d
It carries out the steam soak steam injection of next one and recovers the oil.
The determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity of the invention is based on numerical reservoir simulation method, and ties
Dynamic economy evaluation method is closed to seek with mathematical method using financial net present value as the steaming under the maximization of economic benefit of target
Vapour is handled up best turn-week day oil-producing, to economically and efficiently carry out the work of steam soak turn-week, instructs oil field production practices.
Claims (11)
1. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity, which is characterized in that when the factor of cyclic steam stimulation in heavy oil reservoir turn-week
The determination method of machine includes：
Step 1, the daily oil production in reservoir numerical simulation prediction steam soak each period is utilized；
Step 2, using dynamic economy evaluation method, the day degree net present value (NPV) in steam soak each period is calculated；
Step 3, the accumulation net present value (NPV) in steam soak each period is calculated；
Step 4, the rhythmic accumulation net present value (NPV) of steam soak institute is calculated；
Step 5, the rhythmic accumulation net present value (NPV) of steam soak institute under different turn-week day oil-producings is calculated；
Step 6, the relation curve for drawing the lower accumulation net present value (NPV) of different day oil-producings, seeks steam soak turn-week opportunity.
2. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 1, using numerical reservoir simulation method, steam soak development effectiveness is predicted, and count the day oil-producing in each period.
3. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 1, it is assumed that each front lower day oil-producing of steam soak turn-week is some definite value.
4. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 2, using dynamic economy evaluation method, according to the period of prediction day oil-producing data, day degree net present value (NPV) in calculating cycle.
5. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
It in 3, adds up to the day degree net present value (NPV) in the period, seeks the accumulation net present value (NPV) in the period.
6. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 3, accumulation net present value (NPV) should be greater than 0 in the period of calculating.
7. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 4, accumulation calculating is carried out to all periods of the accumulation net present value (NPV) greater than 0 in period.
8. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 5, step 1-4 is repeated, calculates the rhythmic accumulation net present value (NPV) of steam soak institute under different turn-week day oil-producings；It is transferred to step later
In rapid 6.
9. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In 6, different turn-week day oil-producings are drawn in tables of data with corresponding accumulation net present value (NPV) scatterplot data.
10. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 1, which is characterized in that in step
In rapid 6, using mathematical method, One- place 2-th Order function regression is carried out to scatterplot data, and function maximum is sought by mathematical method
It is worth, corresponding day oil-producing value is reasonable turn-week opportunity under the maximum value.
11. the determination method on factor of cyclic steam stimulation in heavy oil reservoir turn-week opportunity according to claim 10, which is characterized in that in step
In rapid 6, accumulation net present value (NPV) NPV and day oil-producing QoBetween have following functional relation：
NPV=aQo 2+bQo+c
In formula,
NPV- accumulates net present value (NPV)；
QoDay oil-producing；
A, the coefficient for the One- place 2-th Order function that b, c- are returned.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946470A (en) * | 2021-02-04 | 2021-06-11 | 东北大学 | Soft measurement method and system for steam throughput cycle conversion time of sucker rod pumping well |
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| CN103256034A (en) * | 2013-01-23 | 2013-08-21 | 于文英 | Two important methods for improving steam stimulation effect |
| CN104389569A (en) * | 2014-11-11 | 2015-03-04 | 中国石油天然气股份有限公司 | Steam huff and puff exploitation method |
| CN107327289A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of plate method for judging thick oil thermal extraction turn-week steam injection optimal timing |
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- 2018-06-08 CN CN201810591873.2A patent/CN108825190B/en active Active
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|---|---|---|---|---|
| CN103256034A (en) * | 2013-01-23 | 2013-08-21 | 于文英 | Two important methods for improving steam stimulation effect |
| CN104389569A (en) * | 2014-11-11 | 2015-03-04 | 中国石油天然气股份有限公司 | Steam huff and puff exploitation method |
| CN107327289A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of plate method for judging thick oil thermal extraction turn-week steam injection optimal timing |
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| Title |
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| 吕琦: "油田措施增油效益评价方法研究", 《当代石油石化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946470A (en) * | 2021-02-04 | 2021-06-11 | 东北大学 | Soft measurement method and system for steam throughput cycle conversion time of sucker rod pumping well |
| CN112946470B (en) * | 2021-02-04 | 2022-06-17 | 东北大学 | Soft measurement method and system for steam throughput cycle time of sucker-rod pumping well |
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