CN102323999A - Rod-pumped well energy-saving potential measuring method - Google Patents

Rod-pumped well energy-saving potential measuring method Download PDF

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CN102323999A
CN102323999A CN201110307811A CN201110307811A CN102323999A CN 102323999 A CN102323999 A CN 102323999A CN 201110307811 A CN201110307811 A CN 201110307811A CN 201110307811 A CN201110307811 A CN 201110307811A CN 102323999 A CN102323999 A CN 102323999A
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rod
pumped well
collecting system
energy
computer collecting
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郑海金
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YANGZHOU JIANGSU OILFIELD RUIDA PETROLEUM ENGINEERING TECHNOLOGY DEVELOPMENT CO LTD
China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
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YANGZHOU JIANGSU OILFIELD RUIDA PETROLEUM ENGINEERING TECHNOLOGY DEVELOPMENT CO LTD
China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
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Priority to CN201110307811A priority Critical patent/CN102323999A/en
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Abstract

The present invention relates to technical field of petroleum extraction, specifically is a kind of rod-pumped well energy-saving potential measuring method.This method is intended to overcome the limitation that the absolute value that only adopts computer collecting system efficient in the prior art is judged the energy-conservation level of particular well.For this reason, method of the present invention comprises: the current computer collecting system efficient of calculating rod-pumped well; Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum; And according to current computer collecting system efficient and optimum computer collecting system efficient, the energy-saving potential value of measuring and calculating rod-pumped well.Because combining current computer collecting system efficient and optimum computer collecting system efficient, method of the present invention calculates the energy-saving potential of rod-pumped well; Therefore avoid prior art when carrying out the efficiency measuring and calculating, not consider the problem of oil-well self characteristic, improved the rationality of particular well energy-saving potential measuring and calculating.

Description

Rod-pumped well energy-saving potential measuring method
Technical field
The present invention relates to technical field of petroleum extraction, specifically is a kind of rod-pumped well energy-saving potential measuring method.
Background technology
As an important economical operation index of rod-pumped well, computer collecting system efficient is current to be widely used in oil field computer collecting system management and the energy-conservation examination.Existing industry standard is to judge the energy-conservation level in each oil well, oil field according to the absolute value of computer collecting system efficient.Yet the computer collecting system efficiency index is except receiving the influence of management level, and itself also receives the influence of many objective factors such as geologic condition, reservoir physical property, crude oil property, fluid supply capacity, and this makes the computer collecting system efficient of each rod-pumped well have nothing in common with each other.Therefore, no matter be at times or minute unit, only judge that with the absolute value of computer collecting system efficient the production efficiency in oil field is unreasonable.Its outstanding problem is to only depend on the absolute value of computer collecting system efficient to be difficult to grasp the raising potentiality of particular well system effectiveness, promptly is difficult to grasp the energy-saving potential of oil well.
Summary of the invention
The present invention is intended to address the above problem, and promptly overcomes the limitation that the absolute value that only adopts computer collecting system efficient in the prior art is judged the energy-conservation level of particular well.For this purpose, the present invention provides a kind of rod-pumped well energy-saving potential measuring method.
According to an aspect of the present invention, said rod-pumped well energy-saving potential measuring method comprises the following steps: to calculate the current computer collecting system efficient of rod-pumped well; Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum; And according to said current computer collecting system efficient and optimum computer collecting system efficient, the energy-saving potential value of measuring and calculating rod-pumped well.
In a preferred embodiment, the current computer collecting system efficient of calculating rod-pumped well further comprises the following steps: to calculate the useful power of rod-pumped well; Calculate the current power input of rod-pumped well; And the ratio that calculates said useful power and said current power input, as the current computer collecting system efficient of rod-pumped well.
Current power input means particular well and under current working condition, produces the spent general power of a certain amount of crude oil; And useful power means the power that is used to produce said a certain amount of crude oil in the said general power, and this useful power can be according to various crude oil parameters and other correlation parameters, calculate through existing measuring method and any other suitable method.For example, useful power P EfCan calculate through formula: P Ef=1/86400Q 1ρ gh, wherein, Q 1=π/4D 2ρ gsn η p, in this formula, ρ is mixed liquor density (kg/ m 3); G is acceleration of gravity (m/s 2); H is effective head (m); D is pump footpath (m); η pBe pump efficiency (%).This shows that current computer collecting system efficient can reflect have how much power to be used to produce crude oil in the general power and have how much power to be depleted; This efficient not only receives oil-well self characteristic-for example influence of factors such as geologic condition, reservoir physical property, crude oil property, fluid supply capacity, also receives the influence of field production management level simultaneously.
In preferred embodiment, the optimum computer collecting system efficient of calculating rod-pumped well further comprises the following steps: to calculate the minimum power input of rod-pumped well under the identical situation of production capacity; And the ratio that calculates said useful power and said minimum power input, as the optimum computer collecting system efficient of rod-pumped well.
Minimum power input means particular well is produced same amount under desirable working condition the spent minimum general power of crude oil, and useful power as stated, means the power that is used to produce said same amount crude oil in the said minimum general power.Correspondingly, optimum computer collecting system efficient can reflect have how much power to be used to produce crude oil in the minimum general power and have how much power to be depleted.Therefore, what optimum computer collecting system efficient reflected is the highest system effectiveness that particular well can realize, this efficient mainly receives oil-well self characteristic-for example influence of factors such as geologic condition, reservoir physical property, crude oil property, fluid supply capacity.
In further preferred embodiment, the energy-saving potential value representation of said rod-pumped well is a percentage, and is calculated as difference between said optimum computer collecting system efficient and the said current computer collecting system efficient divided by said optimum computer collecting system efficient.
For instance, suppose that the optimum computer collecting system efficient of particular well under desirable working condition is 30%, and its current computer collecting system efficient is 24%, then the energy-saving potential value of this oil well is (30%-24%)/30%=20%.That is to say; Although the current computer collecting system efficient absolute value of this oil well is merely 24%, belong to the poor efficiency oil well, owing to limit by self-characteristic; Optimum (the highest) the computer collecting system efficient that this oil well can be realized also has only 30%; Therefore, it has realized 80% potential system effectiveness, in the production in future; Even if significantly improve equipment with promote management level, this oil well at most also can only have 20% system effectiveness potentiality can dig (the system effectiveness potentiality of residue 20% can not be excavated usually fully in actual production) again.
In further preferred embodiment, the energy-saving potential value representation of said rod-pumped well is a performance number, and is calculated as the difference of said current power input and said minimum power input.
Equally for instance, suppose that it is 6KW that particular well is produced the minimum power input of same amount crude oil under desirable working condition, and its current power input is 10KW, then the energy-saving potential value of this oil well is 10KW-6KW=4KW.That is to say that this oil well can also make power input reduce 4KW at most through improving equipment, promote measures such as management level, in like manner, the system effectiveness potentiality of residue 4KW can not be excavated usually fully in actual production.
Further preferred embodiment in, said current power input is calculated as the motor power consumption under the current production status of rod-pumped well, the calculating of this motor power consumption comprises the following steps: to calculate the solution gas expansion power of rod-pumped well; Calculate the ground wasted power of rod-pumped well; Calculate the viscous loss power of rod-pumped well; Calculate the slippage loss power of rod-pumped well; And with above-mentioned useful power and said ground wasted power, viscous loss power and slippage loss power mutually adduction deduct said solution gas expansion power, the gained result is as the current power input of rod-pumped well.
In other words, the current power input of particular well is calculated according to formula: P i= P u+ P r+ P k+ P Ef- P e, wherein P iBe current power input, P u, P r, P kBe respectively ground wasted power, viscous loss power and slippage loss power, P eBe solution gas expansion power, and P EfBe useful power.Here, solution gas expansion power means the volumetric expansion energy that solution gas produces because of the pressure reduction in crude oil lifting process, and this energy helps the lifting of crude oil, therefore deducts from current power consumption as net horsepower; The ground wasted power means the power attenuation of uphole equipment, mainly comprises the loss of oil pumper mechanical loss and motor self; Viscous loss power means in crude oil lifting process because the power attenuation that viscosity of crude caused; And slippage loss power mainly is meant the slippage loss power between the sucker rod and oil pick-up tube and oil pump piston and pump barrel in the crude production process.Above-mentioned solution gas expansion power and various wasted power all can obtain through existing measuring method and any other suitable method.
Further preferred embodiment in; Said minimum power input is calculated as the minimum motor power consumption of rod-pumped well under the identical situation of production capacity; The calculating of this minimum motor power consumption comprises the following steps: in the scope that oil pumper rated load, nominal torque allow, confirm can the identical output of pumping all computer collecting systems; Confirm the parameter combinations of every kind of computer collecting system; According to the method for the current power input of aforementioned calculation, calculate the pairing power input of parameter combinations of every kind of computer collecting system respectively; And from the pairing power input of the parameter combinations of all computer collecting systems, find out the minimum power input of numerical value, as said minimum power input.
More particularly; The computation process of said minimum power input/minimum motor power consumption is: in the scope that oil pumper rated load, nominal torque allow; Find out can pumping same target output all computer collecting systems, the major parameter of each computer collecting system includes that caliber, pump footpath, pump are dark, roofbolt grade of steel, roofbolt combination, stroke, jig frequency.Be the same target output of pumping; The combination of the roofbolt of various calibers, various pump footpath, dark, the various roofbolt grade of steel of various pump, various science, various stroke and corresponding jig frequency that can productive target output are made up one by one; Every kind of parameter group is closed corresponding a kind of energy consumption, promptly corresponding a kind of system effectiveness.Then, according to the power input computing formula P i= P u+ P r+ P k+ P Ef- P eCalculate every kind of production parameters respectively and make up pairing power input, then from the power input of all production parameters combinations, find out the power input the lowest and be said minimum power input, its corresponding system effectiveness is an optimal system efficient.
In addition; Because to the measuring and calculating of oil well energy-saving potential value is under the identical prerequisite of production capacity, to carry out, as far as with a bite rod-pumped well, production capacity is identical to show that then to be actually used in the useful power of producing crude oil identical; Therefore; Can the useful power under the desirable working condition be set at the useful power that equals under the current working condition, neither can influence the measuring and calculating of energy-saving potential value, can simplify computation process again.That is to say, need not again to calculate the useful power under the desirable working condition the useful power under the current working condition of top calculating.
Further preferred embodiment in; Can also be according to the computation process and the result of said power input; Make at least one in said ground wasted power, viscous loss power and the slippage loss power to minimize, thereby farthest reduce said current power input.
Particularly; The ground wasted power of particular well, viscous loss power and slippage loss power can be through improving equipment or measures such as technology, lifting production management level reduce; Calculating these power not only can be for measuring and calculating energy-saving potential value provide foundation, can also when the energy-conservation situation of particular well need be improved be concrete innovative approach take to provide foundation.For example, when the ground wasted power is excessive, can be to ground pumping unit-improve such as oil pumper and motor; And when slippage loss power is excessive, can carry out the improvement of material or structure aspects to sucker rod and/or oil pick-up tube, oil pump piston and/or pump barrel etc.
According to another aspect of the present invention, a kind of rod-pumped well energy-saving potential measuring method is provided, this method comprises the following steps: to calculate the current computer collecting system efficient of rod-pumped well; Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum; And according to said current computer collecting system efficient and optimum computer collecting system efficient; The energy-saving potential value of measuring and calculating rod-pumped well; Wherein, The energy-saving potential value representation of said rod-pumped well is a percentage, and is calculated as difference between said optimum computer collecting system efficient and the said current computer collecting system efficient divided by said optimum computer collecting system efficient.
According to a further aspect of the invention, a kind of rod-pumped well energy-saving potential measuring method is provided, this method comprises the following steps: to calculate the current power input of rod-pumped well; Calculate the minimum power input of rod-pumped well under the identical situation of production capacity; And according to said current power input and minimum power input, the energy-saving potential value of measuring and calculating rod-pumped well, wherein, the energy-saving potential value representation of said rod-pumped well is a performance number, and is calculated as the difference of said current power input and said minimum power input.
Because combining current computer collecting system efficient and optimum computer collecting system efficient, said method of the present invention calculates the energy-saving potential of rod-pumped well; Therefore avoid prior art when carrying out the efficiency measuring and calculating, not consider the problem of oil-well self characteristic, improved the rationality of particular well energy-saving potential measuring and calculating.Meaning of the present invention also is to obtain energy-saving potential and and guides the technological transformation direction; Through accurately finding out particular well under the situation of producing identical liquid measure; Attainable optimizer system efficiency value; Application system efficiency potential value index judges that the system effectiveness of particular well realizes situation, the raising potentiality of clear and definite system effectiveness.
Description of drawings
Describe preferred implementation of the present invention in conjunction with the drawings, those skilled in the art can understand above-mentioned and other feature and advantage of the present invention more fully, in the accompanying drawing:
Fig. 1 is the process flow diagram of a preferred implementation according to the method for the invention.
Embodiment
Hereinafter only is exemplary to the description of preferred implementation of the present invention in essence, is not to be intended to limit invention, its application, or uses.Should be noted that; Although this preferred implementation has disclosed various concrete parameter of the present invention and details; But those skilled in the art are understood that easily protection scope of the present invention is not limited to these parameters and details, under the situation that does not depart from ultimate principle of the present invention; Those skilled in the art can make modification, adjust or be equal to replacement to these parameters and details, for example can different order carry out each step in the said method.
As shown in Figure 1; Rod-pumped well energy-saving potential measuring method according to the present invention comprises the following steps: to calculate the current computer collecting system efficient of rod-pumped well, and this step comprises again to be calculated useful power, calculate current power input and calculate the current computer collecting system efficient of the ratio of useful power and current power input as rod-pumped well; Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum, this step comprises the minimum power input of calculating rod-pumped well under the identical situation of production capacity again and calculates the optimum computer collecting system efficient of the ratio of said useful power and minimum power input as rod-pumped well; And according to the energy-saving potential value of current computer collecting system efficient and optimum computer collecting system efficient measuring and calculating rod-pumped well, thereby this step comprises the energy-saving potential value (percentage) of calculating rod-pumped well with the difference between optimum computer collecting system efficient and the current computer collecting system efficient divided by optimum computer collecting system efficient again.Substituting ground, the energy-saving potential value of rod-pumped well can also be expressed as performance number, and is calculated as the difference between current power input and the minimum power input.Alternatively, method of the present invention also can comprise: according to the computation process and the result of power input, take measures pointedly so that farthest reduce current power input.Below in conjunction with accompanying drawing above-mentioned steps is explained respectively.
According to the present invention, can calculate current power input under the current working condition, corresponding current computer collecting system efficient and can produce the minimum system's power input of the energy consumption of identical output-be minimum power input and corresponding optimum computer collecting system efficient according to formula:
P i?=? P u?+? P r?+? P k+? P ef?-? P e
η?= ?P ef?/ P i?×100%=? P ef?/?( P u?+? P r?+? P k+? P ef?-? P e)?×100%
Wherein, P iBe power input to machine (kW); P uBe ground wasted power (kW); P rBe viscous loss power (kW); P kBe slippage loss power (kW); P eBe solution gas expansion power (kW); P EfBe useful power (kW); And ηBe computer collecting system efficient.Above-mentioned two formula both can be used for calculating the optimum computer collecting system efficient under the desirable working condition, also can be used for calculating the current computer collecting system efficient under the current working condition.
In addition, no matter be under current working condition, or under desirable working condition, current power input P NowWith minimum power input P BestAll can calculate according to the motor power consumption of oil pumper, this motor power consumption can actually record, and also can be through above-mentioned formula P i= P u+ P r+ P k+ P Ef- P eCalculate.Useful power P EfCan be according to various crude oil parameters and other correlation parameters, calculate through existing measuring method and any other suitable method.For example, useful power P EfCan calculate through formula: P Ef=1/86400Q 1ρ gh, wherein, Q 1=π/4D 2ρ gsn η p, in this formula, ρ is mixed liquor density (kg/ m 3); G is acceleration of gravity (m/s 2); H is effective head (m); D is pump footpath (m); η pBe pump efficiency (%).
Moreover, minimum power input P BestCan be calculated as the minimum motor power consumption of rod-pumped well under the identical situation of production capacity.Specifically, with current power input calculate through the parameter under the current working condition different, the calculating of minimum power input must consideration can the identical output of pumping every kind of parameter group of all computer collecting systems close.More particularly; The computation process of said minimum power input/minimum motor power consumption is: in the scope that oil pumper rated load, nominal torque allow; Find out can pumping same target output all computer collecting systems, the major parameter of each computer collecting system includes that caliber, pump footpath, pump are dark, roofbolt grade of steel, roofbolt combination, stroke, jig frequency.Be the same target output of pumping; The combination of the roofbolt of various calibers, various pump footpath, dark, the various roofbolt grade of steel of various pump, various science, various stroke and corresponding jig frequency that can productive target output are made up one by one; Every kind of parameter group is closed corresponding a kind of energy consumption, promptly corresponding a kind of system effectiveness.Then, according to the power input computing formula P i= P u+ P r+ P k+ P Ef- P eCalculate every kind of production parameters respectively and make up pairing power input, then from the power input of all production parameters combinations, find out the power input the lowest and be said minimum power input, its corresponding system effectiveness is an optimal system efficient.
Next, can calculate system effectiveness potential value-be energy-saving potential value (percentage) R according to formula:
R?=(η best?-?η now)/η best?×100%
Wherein, η NowBe current computer collecting system efficient, and η BestBe optimum computer collecting system efficient.For instance, suppose the optimum computer collecting system efficiency eta of particular well under desirable working condition BestBe 30%, and its current computer collecting system efficiency eta NowBe 24%, then the energy-saving potential percentage of this oil well is (30%-24%)/30%=20%.That is to say; Although the current computer collecting system efficient absolute value of this oil well is merely 24%, belong to the poor efficiency oil well, owing to limit by self-characteristic; Optimum (the highest) the computer collecting system efficient that this oil well can be realized also has only 30%; Therefore, it has realized 80% potential system effectiveness, in the production in future; Even if significantly improve equipment with promote management level, also have only 20% system effectiveness potentiality can dig (the system effectiveness potentiality of residue 20% can not be excavated fully in actual production) at most.
This shows that application system energy-saving potential value judges that the system effectiveness of a bite oil well, a block or an oil recovery factory realizes situation, can be clearly under prior art, oil reservoir and the appointed condition of oil well, the actual energy-conservation quantized value that can reach.Simultaneously, which condition can be clearly improved and how many computer collecting system efficiency values can be improved.Particularly, the ground wasted power of particular well P u, viscous loss power P rAnd slippage loss power P kCan be through improving equipment or measures such as technology, lifting production management level reduce; Calculating these power not only can be for measuring and calculating energy-saving potential value provide foundation, can also when the energy-conservation situation of particular well need be improved be concrete innovative approach take to provide foundation.For example, when the ground wasted power is excessive, can be to ground pumping unit-improve such as oil pumper and motor; And when slippage loss power is excessive, can carry out the improvement of material or structure aspects to sucker rod and/or oil pick-up tube, oil pump piston and/or pump barrel etc.
As stated, the energy-saving potential value also is expressed as to substitutability (P Now-P Best), so, the energy-saving potential value just is expressed as the difference between current actual power loss and the desirable lowest power consumption.Equally for instance, suppose that it is 6KW that particular well is produced the minimum power input of same amount crude oil under desirable working condition, and its current power input is 10KW, then the energy-saving potential value of this oil well is 10KW-6KW=4KW.That is to say that this oil well can also make power input reduce 4KW through improving equipment, promote measures such as management level, in like manner, the system effectiveness potentiality of residue 4KW can not be excavated fully in actual production.
Correspondingly; The present invention has overcome the defective that available technology adopting system effectiveness absolute value index evaluation is produced; Introduced the notion of system effectiveness potential value (energy-saving potential value); Got rid of the influence of particular well oneself factor, thereby made each rod-pumped well in system effectiveness measuring and calculating, have identical starting point, thereby made system effectiveness level between different oil wells, block, production crew, oil recovery factory and the oil recovery company relatively become science and justice more.That is to say, need not to calculate the useful power under the desirable working condition according to the mode of the useful power under the current working condition of top calculating.
Although described technical scheme of the present invention with reference to preferred implementation; But those skilled in the art are understood that easily; Protection scope of the present invention is not limited to these preferred implementations; Under the situation that does not depart from ultimate principle of the present invention, can split said embodiment and concrete technical characterictic wherein-for example each measuring and calculating step splits, makes up or changes, combination or change after technical scheme will fall within protection scope of the present invention.

Claims (10)

1. a rod-pumped well energy-saving potential measuring method is characterized in that comprising the following steps:
Calculate the current computer collecting system efficient of rod-pumped well;
Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum; And
According to said current computer collecting system efficient and optimum computer collecting system efficient, the energy-saving potential value of measuring and calculating rod-pumped well.
2. rod-pumped well energy-saving potential measuring method as claimed in claim 1 is characterized in that, the current computer collecting system efficient of calculating rod-pumped well further comprises the following steps:
Calculate the useful power of rod-pumped well;
Calculate the current power input of rod-pumped well; And
Calculate the ratio of said useful power and said current power input, as the current computer collecting system efficient of rod-pumped well.
3. rod-pumped well energy-saving potential measuring method as claimed in claim 2 is characterized in that, the optimum computer collecting system efficient of calculating rod-pumped well further comprises the following steps:
Calculate the minimum power input of rod-pumped well under the identical situation of production capacity; And
Calculate the ratio of said useful power and said minimum power input, as the optimum computer collecting system efficient of rod-pumped well.
4. rod-pumped well energy-saving potential measuring method as claimed in claim 3; It is characterized in that; The energy-saving potential value representation of said rod-pumped well is a percentage, and is calculated as difference between said optimum computer collecting system efficient and the said current computer collecting system efficient divided by said optimum computer collecting system efficient.
5. rod-pumped well energy-saving potential measuring method as claimed in claim 3 is characterized in that the energy-saving potential value representation of said rod-pumped well is a performance number, and is calculated as the difference of said current power input and said minimum power input.
6. like each described rod-pumped well energy-saving potential measuring method in the claim 2 to 5, it is characterized in that said current power input is calculated as the motor power consumption under the current production status of rod-pumped well, the calculating of this motor power consumption comprises the following steps:
Calculate the solution gas expansion power of rod-pumped well;
Calculate the ground wasted power of rod-pumped well;
Calculate the viscous loss power of rod-pumped well;
Calculate the slippage loss power of rod-pumped well; And
With said useful power and said ground wasted power, viscous loss power and slippage loss power mutually adduction deduct said solution gas expansion power, the gained result is as the current power input of rod-pumped well.
7. like each described rod-pumped well energy-saving potential measuring method in the claim 3 to 5; It is characterized in that; Said minimum power input is calculated as the minimum motor power consumption of rod-pumped well under the identical situation of production capacity, and the calculating of this minimum motor power consumption comprises the following steps:
In the scope that oil pumper rated load, nominal torque allow, confirm can the identical output of pumping all computer collecting systems;
Confirm the parameter combinations of every kind of computer collecting system;
The method of the current power input of calculating according to claim 6 calculates the pairing power input of parameter combinations of every kind of computer collecting system respectively; And
From the pairing power input of the parameter combinations of all computer collecting systems, find out the minimum power input of numerical value, as said minimum power input.
8. rod-pumped well energy-saving potential measuring method as claimed in claim 6; It is characterized in that; Computation process and result according to said power input; Make at least one in said ground wasted power, viscous loss power and the slippage loss power to minimize, thereby farthest reduce said current power input.
9. a rod-pumped well energy-saving potential measuring method is characterized in that comprising the following steps:
Calculate the current computer collecting system efficient of rod-pumped well;
Calculate the optimum computer collecting system efficient of rod-pumped well under the situation that production capacity is identical and energy consumption is minimum; And
According to said current computer collecting system efficient and optimum computer collecting system efficient, the energy-saving potential value of measuring and calculating rod-pumped well,
Wherein, the energy-saving potential value representation of said rod-pumped well is a percentage, and is calculated as difference between said optimum computer collecting system efficient and the said current computer collecting system efficient divided by said optimum computer collecting system efficient.
10. a rod-pumped well energy-saving potential measuring method is characterized in that comprising the following steps:
Calculate the current power input of rod-pumped well;
Calculate the minimum power input of rod-pumped well under the identical situation of production capacity; And
According to said current power input and minimum power input, the energy-saving potential value of measuring and calculating rod-pumped well,
Wherein, the energy-saving potential value representation of said rod-pumped well is a performance number, and is calculated as the difference of said current power input and said minimum power input.
CN201110307811A 2011-10-12 2011-10-12 Rod-pumped well energy-saving potential measuring method Pending CN102323999A (en)

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CN109299838A (en) * 2017-07-24 2019-02-01 中国石油化工股份有限公司 A kind of refinery processes energy consumption analysis method and device

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