CN108678730A - A kind of determination method of the reasonable submergence of oil well - Google Patents
A kind of determination method of the reasonable submergence of oil well Download PDFInfo
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- CN108678730A CN108678730A CN201810462125.4A CN201810462125A CN108678730A CN 108678730 A CN108678730 A CN 108678730A CN 201810462125 A CN201810462125 A CN 201810462125A CN 108678730 A CN108678730 A CN 108678730A
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- submergence
- oil well
- power consumption
- hundred meters
- system effectiveness
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
Abstract
The invention discloses a kind of determination methods of the reasonable submergence of oil well, belong to oil-gas field development technical field.The determination method of the reasonable submergence of oil well selectes the submergence of local every mouth oil well by acquisition,Hundred meters of power consumption of system effectiveness and ton liquid,To the submergence of every mouth oil well,Hundred meters of power consumption of system effectiveness and ton liquid carry out data screening,Obtain satisfactory oil well,Then to the corresponding submergence of satisfactory oil well and hundred meters of power consumption of ton liquid,Submergence carries out quadratic polynomial fitting with system effectiveness,Obtain the quadratic polynomial of submergence and the quadratic polynomial and submergence and system effectiveness of hundred meters of power consumption of ton liquid,Derivative operation is carried out to two quadratic polynomials respectively again,Obtain the first submergence and the second submergence,Using the first submergence and the second submergence as boundary value,Realize the value range that reasonable submergence is determined based on live actual production data,Be conducive to the scientific and effective actual production operation of guidance,Reduce energy consumption.
Description
Technical field
The present invention relates to oil-gas field development technical field, more particularly to the determination method of a kind of reasonable submergence of oil well.
Background technology
Oil well submergence refers in oil well production, and deep well pump is submerged in hydrodynamic face depth below in well, in numerical value
The difference of upper depth and dynamic Liquid Surface depth equal to deep well pump.In the production operation in oil field, the reasonable submergence of oil well can be with
Pump efficiency is improved, reduces energy consumption, and can effective Extended Pump Detection Period.
The determination of the reasonable submergence of oil well is mainly to be pushed away by the experience or theory of field technician in the prior art
Determination is led, theory deduction is determined, is published in Zhou Na et al.《Middle outer energy》2014 on volume 19《Tuo21 fault block is taken out
The optimization of oil machine well submergence is analyzed》For one text, theoretical calculation is utilized in text, calculating formula according to head loss is tied
By：When water ratio in oil well is more than 90%, the theoretical minimum value of submergence is 70m.
In the implementation of the present invention, the inventors discovered that having at least the following problems in the prior art：
Experience or theory deduction of the determination method of the reasonable submergence of oil well based on field technician in the prior art, with
Produce reality situation difference is larger, cannot specifically determine the range of reasonable submergence, be unfavorable for instructing actual production operation.
Invention content
In consideration of it, the present invention provides a kind of determination method of the reasonable submergence of oil well based on live actual production data,
To realize the scientific and effective actual production operation of guidance.
Specifically, including technical solution below：
A kind of determination method of the reasonable submergence of oil well, the method includes：
Obtain hundred meters of submergence, system effectiveness and ton liquid power consumption for selecting local every mouth oil well；
Data screening is carried out respectively to hundred meters of submergence of the every mouth oil well, system effectiveness and ton liquid power consumption, is obtained
To satisfactory oil well and undesirable oil well；
The corresponding submergence of the satisfactory oil well is carried out with hundred meters of power consumption of ton liquid, submergence and system effectiveness
Quadratic polynomial is fitted, obtain hundred meters of power consumption of submergence and ton liquid quadratic polynomial and submergence and system effectiveness it is secondary
Multinomial；
Quadratic polynomial and the submergence and system effectiveness to hundred meters of power consumption of the submergence and ton liquid it is secondary
Multinomial carries out derivative operation respectively, obtains the first submergence and the second submergence；
Using first submergence and second submergence as boundary value, the value range of reasonable submergence is determined.
Further, it is described to hundred meters of submergence of the every mouth oil well, system effectiveness and ton liquid power consumption respectively into
Row data screening, obtains satisfactory oil well and undesirable oil well includes：If the submergence of oil well be less than 0 and/or
System effectiveness is less than or equal to 0 and/or system effectiveness is more than or equal to 100 and/or hundred meters of power consumption of ton liquid are less than or equal to 0, then described
Oil well is undesirable oil well, and otherwise the oil well is satisfactory oil well.
Further, described according to first submergence and second submergence, determine the value of reasonable submergence
Range includes：If first submergence is more than or equal to second submergence, the reasonable submergence is more than or equal to described
Second submergence is less than or equal to first submergence；If first submergence is less than or equal to second submergence, institute
It states reasonable submergence and is more than or equal to first submergence, be less than or equal to second submergence.
Further, the quadratic polynomial to hundred meters of power consumption of the submergence and ton liquid and the submergence be
The quadratic polynomial of system efficiency carries out derivative operation respectively, obtains the first submergence and the second submergence includes：To the sinking
The quadratic polynomial and the quadratic polynomial of the submergence and system effectiveness of degree and hundred meters of power consumption of ton liquid carry out single order respectively
Derivation obtains the first derivative of submergence and the first derivative and submergence and system effectiveness of hundred meters of power consumption of ton liquid, described
When the first derivative and the first derivative of the submergence and system effectiveness of submergence and hundred meters of power consumption of ton liquid are 0, institute is obtained
State the first submergence and second submergence.
Further, it is described to hundred meters of submergence of the every mouth oil well, system effectiveness and ton liquid power consumption respectively into
Row data screening, obtains satisfactory oil well and undesirable oil well is later and described to the satisfactory oil well
Corresponding submergence and hundred meters of power consumption of ton liquid, submergence and system effectiveness carry out quadratic polynomial fitting, obtain submergence with
Before the quadratic polynomial and the quadratic polynomial of submergence and system effectiveness of ton hundred meters of power consumption of liquid, the method further includes：
The corresponding submergence of the satisfactory oil well is subjected to size sequence, and using pre-determined distance as interval to the submergence into
Row interval division.
Further, described that the corresponding submergence of the satisfactory oil well is subjected to size sequence, and with it is default away from
After carrying out interval division to the submergence for interval, the method further includes：To the sinking in each section
Degree and its corresponding hundred meters of power consumption of the ton liquid and the system effectiveness are averaged, and obtain the average sinking in each section
Degree, average hundred meters of power consumption of ton liquid and average system effectiveness.
Further, the value range of the pre-determined distance is 0~100m.
Further, the number for selecting local oil well is more than or equal to 150.
The advantageous effect of technical solution provided in an embodiment of the present invention：
The determination method of the reasonable submergence of oil well of the embodiment of the present invention selectes local every mouth oil well by acquisition
Hundred meters of submergence, system effectiveness and ton liquid power consumption, to hundred meters of submergence of every mouth oil well, system effectiveness and ton liquid power consumption
Data screening is carried out respectively, obtains satisfactory oil well and undesirable oil well, then to satisfactory oil well pair
The submergence answered carries out quadratic polynomial fitting with hundred meters of power consumption of ton liquid, submergence and system effectiveness, obtains submergence and ton
The quadratic polynomial of the quadratic polynomial and submergence and system effectiveness of hundred meters of power consumption of liquid, then to hundred meters of consumptions of submergence and ton liquid
The quadratic polynomial and submergence of electricity and the quadratic polynomial of system effectiveness carry out derivative operation respectively, obtain the first submergence
It is realized true based on live actual production data finally using the first submergence and the second submergence as boundary value with the second submergence
The value range of fixed reasonable submergence is conducive to the scientific and effective actual production operation of guidance, reduces energy consumption.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of method flow diagram of the determination method of the reasonable submergence of oil well provided in an embodiment of the present invention；
Fig. 2 is hundred meters of submergence and ton liquid in a kind of determination method of the reasonable submergence of oil well provided in an embodiment of the present invention
The matched curve figure of power consumption, submergence and system effectiveness.
Specific implementation mode
To keep technical scheme of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
An embodiment of the present invention provides a kind of determination methods of the reasonable submergence of oil well, by taking North China Oilfield area under one's jurisdiction as an example,
Its method flow diagram is as shown in Figure 1, this method includes：
Step 101：Obtain hundred meters of submergence, system effectiveness and ton liquid power consumption for selecting local every mouth oil well；
It should be noted that the number for selecting local oil well is more than or equal to 150, to ensure enough data volumes.
In embodiments of the present invention, select it is local share 937 mouthfuls of oil wells, obtain every mouth oil well in 937 mouthfuls of oil wells
Hundred meters of submergence, system effectiveness and ton liquid power consumption.
It should be noted that in view of the particularity of petroleum industry, the pound signs of all admissions be uniformly labeled as 1# wells, 2# wells,
3# wells ... ..., 937# wells.
Step 102：Data sieve is carried out respectively to hundred meters of submergence of every mouth oil well, system effectiveness and ton liquid power consumption
Choosing, obtains satisfactory oil well and undesirable oil well；
Specifically, hundred meters of submergence of every mouth oil well, system effectiveness and ton liquid power consumption are judged respectively, if oily
Hundred meters of corresponding submergence of well, system effectiveness and ton liquid power consumption meet：(1) submergence of oil well is less than 0；(2) system effectiveness
Less than or equal to 0；(3) system effectiveness is more than or equal to 100；(4) hundred meters of power consumption of ton liquid are less than or equal to 0, therein any or one
Conditions above, then oil well is undesirable oil well；If hundred meters of corresponding submergence of oil well, system effectiveness and ton liquid power consumption
It is unsatisfactory for any of the above-described condition, then oil well is satisfactory oil well.
In embodiments of the present invention, by the submergence of every mouth oil well, hundred meters of power consumption of system effectiveness and ton liquid into
Row data screening obtains 895 mouthfuls of satisfactory oil wells.The corresponding sinking of every mouth oil well in 895 mouthfuls of satisfactory oil wells
Degree, the data of hundred meters of power consumption of system effectiveness and ton liquid are as shown in table 1：
1 satisfactory well data of table
Step 103：To the corresponding submergence of satisfactory oil well and hundred meters of power consumption of ton liquid, submergence and system effectiveness
It carries out quadratic polynomial fitting, obtains the quadratic polynomial and submergence and system effectiveness of submergence and hundred meters of power consumption of ton liquid
Quadratic polynomial；
By table 1 it is found that since the quantity for selecting local satisfactory oil well is more, quadratic polynomial is directly carried out
The operand of fitting is larger, and processing time is long, therefore, can be by the corresponding sinking of satisfactory oil well before this step
Degree carries out size sequence, and carries out interval division to submergence using pre-determined distance as interval, is grouped to data, convenient for quasi-
It closes.
Further, it is being that interval carries out interval division and then in each section to submergence using pre-determined distance
Hundred meters of power consumption of submergence and its corresponding ton liquid and system effectiveness be averaged, obtain the average sinking in each section
Degree, average hundred meters of power consumption of ton liquid and average system effectiveness can utilize the average submergence in multiple sections, average hundred meters of ton liquid
The quadratic polynomial that power consumption and average system effectiveness carry out submergence and hundred meters of power consumption of ton liquid, submergence and system effectiveness is quasi-
It closes.
It should be noted that the value range of pre-determined distance is 0~100m, when the negligible amounts of satisfactory oil well
When, data can not be grouped, at this point, pre-determined distance is 0；When the quantity of satisfactory oil well is more, according to fortune
It is 100m that calculation demand, which chooses pre-determined distance,.
In embodiments of the present invention, the corresponding submergence of satisfactory oil well is ranked up from small to large, with default
Distance is that 50m is that interval carries out interval division.
It should be noted that when submergence be more than 900m after, the data of submergence are comparatively disperseed, if continue with
50m is that interval carries out interval division, easily leads to that divide later data error larger, so, submergence is more than the oil well of 900m
It is divided into 1 section.
After interval division, the average submergence in each section is found out, average ton hundred meters of power consumptions of liquid, average system effect
Rate, specific data are as shown in table 2：
Well data after 2 demarcation interval of table
| Interval division | Average submergence (m) | Average ton hundred meters of power consumptions (kWh) of liquid | Average system efficiency (%) |
| 0 H≤50 ＜ | 15.62 | 2.36 | 20.75 |
| 50 H≤100 ＜ | 76.17 | 1.53 | 26.7 |
| 100 H≤150 ＜ | 121.41 | 1.57 | 26.48 |
| 150 H≤200 ＜ | 173.5 | 1.25 | 34.33 |
| 200 H≤250 ＜ | 222.91 | 1.25 | 36.52 |
| 250 H≤300 ＜ | 275.69 | 0.87 | 41.82 |
| 300 H≤350 ＜ | 319.72 | 1.15 | 34.88 |
| 350 H≤400 ＜ | 374.73 | 1.38 | 37.01 |
| 400 H≤450 ＜ | 417.28 | 1.21 | 34.8 |
| 450 H≤500 ＜ | 477.71 | 1.23 | 36.99 |
| 500 H≤550 ＜ | 522.18 | 0.96 | 39.3 |
| 550 H≤600 ＜ | 572.69 | 0.81 | 39.57 |
| 600 H≤650 ＜ | 620.59 | 1.09 | 35.8 |
| 650 H≤700 ＜ | 671.11 | 1 | 32.83 |
| 700 H≤750 ＜ | 721.44 | 1.5 | 30.37 |
| 750 H≤800 ＜ | 778.74 | 2.36 | 32.79 |
| 800 H≤850 ＜ | 827.65 | 1.25 | 35 |
| 850 H≤900 ＜ | 875.53 | 0.91 | 36.33 |
| 900 ＜ H | 1203.31 | 2.79 | 28.88 |
The average submergence in each section, average hundred meters of power consumption of ton liquid and average system effectiveness are carried out in a coordinate system
Corresponding mark, and quadratic polynomial matched curve is drawn, as shown in Figure 2.
Quadratic polynomial fitting is carried out by hundred meters of power consumption of average submergence and average ton liquid, what is be fitted is secondary more
Xiang Shiwei：Y=4E-06x2-0.003x+1.968；
Quadratic polynomial fitting, the quadratic polynomial being fitted are carried out by average submergence and average system efficiency
For：Y=-3E-05x2+0.038x+25.59。
Step 104：Quadratic polynomial and submergence and system effectiveness to hundred meters of power consumption of submergence and ton liquid it is secondary
Multinomial carries out derivative operation respectively, obtains the first submergence and the second submergence；
Specifically, the quadratic polynomial to submergence and hundred meters of power consumption of ton liquid and submergence and system effectiveness is secondary more
Formula carries out first derivation respectively, obtains the first derivative and submergence and system effectiveness of submergence and hundred meters of power consumption of ton liquid
First derivative, when the first derivative and the first derivative of submergence and system effectiveness of submergence and hundred meters of power consumption of ton liquid are 0,
Obtain the first submergence and the second submergence.
In embodiments of the present invention, to the quadratic polynomial of the average submergence and average ton hundred meters of power consumption of liquid that fit
First derivation is carried out, first derivative isIt enables the first derivative be equal to 0, acquires x=375m, i.e., first
Submergence is 375m.
First derivation is carried out to the average submergence and the quadratic polynomial of average system efficiency that fit, first derivative isIt enables the first derivative be equal to 0, acquires x=633m, is i.e. the second submergence is 633m.
Step 105：Using the first submergence and the second submergence as boundary value, the value range of reasonable submergence is determined.
Specifically, if the first submergence is more than or equal to the second submergence, reasonable submergence is more than or equal to the second submergence,
Less than or equal to the first submergence；If the first submergence is less than or equal to the second submergence, it is heavy that reasonable submergence is more than or equal to first
It does not spend, is less than or equal to the second submergence.
In embodiments of the present invention, ranging from 375 meters~633 meters of the reasonable submergence of oil well.
The determination method of the reasonable submergence of oil well of the embodiment of the present invention selectes local every mouth oil well by acquisition
Hundred meters of submergence, system effectiveness and ton liquid power consumption, to hundred meters of submergence of every mouth oil well, system effectiveness and ton liquid power consumption
Data screening is carried out respectively, obtains satisfactory oil well and undesirable oil well, then to satisfactory oil well pair
The submergence answered carries out quadratic polynomial fitting with hundred meters of power consumption of ton liquid, submergence and system effectiveness, obtains submergence and ton
The quadratic polynomial of the quadratic polynomial and submergence and system effectiveness of hundred meters of power consumption of liquid, then to hundred meters of consumptions of submergence and ton liquid
The quadratic polynomial and submergence of electricity and the quadratic polynomial of system effectiveness carry out derivative operation respectively, obtain the first submergence
It is realized true based on live actual production data finally using the first submergence and the second submergence as boundary value with the second submergence
The value range of fixed reasonable submergence is conducive to the scientific and effective actual production operation of guidance, reduces energy consumption.
The above is merely for convenience of it will be understood by those skilled in the art that technical scheme of the present invention, not limiting
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of invention.
Claims (8)
1. a kind of determination method of the reasonable submergence of oil well, which is characterized in that the method includes：
Obtain hundred meters of submergence, system effectiveness and ton liquid power consumption for selecting local every mouth oil well；
Data screening is carried out respectively to hundred meters of submergence of the every mouth oil well, system effectiveness and ton liquid power consumption, is accorded with
Close desired oil well and undesirable oil well；
The corresponding submergence of the satisfactory oil well and hundred meters of power consumption of ton liquid, submergence and system effectiveness are carried out secondary
Fitting of a polynomial, obtain hundred meters of power consumption of submergence and ton liquid quadratic polynomial and submergence and system effectiveness it is secondary multinomial
Formula；
Quadratic polynomial and the submergence and system effectiveness to hundred meters of power consumption of the submergence and ton liquid it is secondary multinomial
Formula carries out derivative operation respectively, obtains the first submergence and the second submergence；
Using first submergence and second submergence as boundary value, the value range of reasonable submergence is determined.
2. the determination method of the reasonable submergence of oil well according to claim 1, which is characterized in that described to the every mouth
Hundred meters of submergence, system effectiveness and ton liquid power consumption of oil well carry out data screening respectively, obtain satisfactory oil well and not
Satisfactory oil well includes：If the submergence of oil well is less than 0 and/or system effectiveness is less than or equal to 0 and/or system effectiveness is more than
Equal to 100 and/or hundred meters of power consumption of ton liquid are less than or equal to 0, then the oil well is undesirable oil well, otherwise the oil well
For satisfactory oil well.
3. the determination method of the reasonable submergence of oil well according to claim 1, which is characterized in that described with first submergence
It is boundary value with second submergence, determines that the value range of reasonable submergence includes：If first submergence be more than etc.
In second submergence, then the reasonable submergence is more than or equal to second submergence, less than or equal to first sinking
Degree；If first submergence is less than or equal to second submergence, it is heavy that the reasonable submergence is more than or equal to described first
It does not spend, is less than or equal to second submergence.
4. the determination method of the reasonable submergence of oil well according to claim 1, which is characterized in that described to the submergence
Derivation fortune is carried out respectively with the quadratic polynomial and the quadratic polynomial of the submergence and system effectiveness of hundred meters of power consumption of ton liquid
It calculates, obtains the first submergence and the second submergence includes：Quadratic polynomial to the submergence and hundred meters of power consumption of ton liquid and
The quadratic polynomial of the submergence and system effectiveness carries out first derivation respectively, obtains submergence and hundred meters of power consumption of ton liquid
The first derivative of first derivative and submergence and system effectiveness, the submergence and hundred meters of power consumption of ton liquid first derivative and
When the first derivative of the submergence and system effectiveness is 0, first submergence and second submergence are obtained.
5. the determination method of the reasonable submergence of oil well according to claim 1, which is characterized in that described to the every mouth
Hundred meters of submergence, system effectiveness and ton liquid power consumption of oil well carry out data screening respectively, obtain satisfactory oil well and not
After satisfactory oil well and it is described to the corresponding submergence of the satisfactory oil well and hundred meters of power consumption of ton liquid, sink
Degree carries out quadratic polynomial fitting with system effectiveness, obtains the quadratic polynomial and submergence of submergence and hundred meters of power consumption of ton liquid
Before the quadratic polynomial of system effectiveness, the method further includes：By the corresponding submergence of the satisfactory oil well into
Row size sorts, and carries out interval division to the submergence using pre-determined distance as interval.
6. the determination method of the reasonable submergence of oil well according to claim 5, which is characterized in that described to meet the requirements described
The corresponding submergence of oil well carry out size sequence, and using pre-determined distance be interval to submergence progress interval division it
Afterwards, the method further includes：To in each section the submergence and its corresponding hundred meters of power consumption of the ton liquid and institute
It states system effectiveness to be averaged, obtains average submergence, average hundred meters of power consumption of ton liquid and the average system effect in each section
Rate.
7. the determination method of the reasonable submergence of oil well according to claim 5, which is characterized in that the pre-determined distance takes
It is worth ranging from 0~100m.
8. the determination method of the reasonable submergence of oil well according to claim 1, which is characterized in that described to select local oil
The number of well is more than or equal to 150.
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| CN116011351A (en) * | 2023-03-28 | 2023-04-25 | 中国石油大学(华东) | Oil well reasonable sinking degree determining method based on clustering algorithm and Widedeep network |
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