CN113554258A - Method for evaluating full-process green development effect of high-water-content oil field - Google Patents
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Abstract
The invention provides a method for evaluating the full-process green development effect of a high-water-content oil field, which comprises the following steps of: step 1, obtaining yield data, energy consumption data and development cost data of high water-cut block mine field production; step 2, preprocessing the data acquired in the step 1; step 3, establishing a three-dimensional space coordinate system, connecting the data of the three ratios to form a space triangle, and calculating the included angle variance of the space triangle; and 4, evaluating the green development effect of the oil field by using the included angle variance of the space triangle. The method for evaluating the full-flow green development effect of the high-water-content oil field has better operability, is beneficial to popularization, and provides a feasible new method for quantitative identification of the green development evaluation of the high-water-content oil field.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a method for evaluating the full-process green development effect of a high-water-content oilfield.
Background
The oil and gas industry is not only an energy producer, but also an energy consumption and greenhouse gas emission amplifier. Under the background of energy revolution and low oil price, the oil and gas industry faces not only the requirements of new energy extrusion and energy conservation and emission reduction, but also the problem that cost needs to be reduced to realize benefit development. After decades of development of old oil fields, most of the old oil fields enter a high water content stage, on one hand, the problems of large yield decrease and difficult stable production need to be overcome, on the other hand, the problems of high energy consumption, high cost and low efficiency need to be solved, and green sustainable development of the old oil fields is realized.
The old oil field development is a very complex system engineering, the production process comprises a plurality of modules of an injection system, an oil reservoir system and a production system (oil extraction, gathering and transportation), energy, material and cost conversion and transmission exist among the modules, and each module also comprises a well-defined multi-element structure. How to quickly and quantitatively evaluate whether the complex system meets the requirements of green efficient development is a precondition for realizing green sustainable development.
In the application No.: chinese patent application CN201410708215.9 relates to an oil field development evaluation method, which comprises: acquiring development dynamic data and phase permeability experimental data of a research oil reservoir block; dividing a research oil reservoir block into a plurality of development stages according to the water content; determining an evaluation index of each development stage of a research oil reservoir block; calculating actual values and theoretical values of evaluation indexes of the reservoir block in each development stage; calculating a threshold value of each evaluation index in each development stage; determining the weight of each evaluation index on the influence of the research on the development effect of the oil reservoir block, and acquiring an evaluation index weight matrix; acquiring development dynamic data of an oil reservoir block to be evaluated; determining the development stage of the oil reservoir block to be evaluated, and calculating the actual value of the evaluation index of the oil reservoir block in the development stage; establishing an evaluation index membership function of an oil reservoir block to be evaluated, and acquiring an evaluation index membership matrix; however, the patent only evaluates the development effect of the oil field from the development indexes, does not consider other subsystems of the oil field development system, such as an injection system and a gathering and transportation system, and energy consumption and cost indexes for developing each subsystem, and cannot evaluate the green development effect of the oil field from a comprehensive angle.
Therefore, a green development evaluation method for the whole process of the high-water-content oil field needs to be established, whether the current oil field development effect is matched with the energy consumption level or not is judged rapidly and quantitatively, and therefore the green development effect evaluation method for the high-water-content oil field is invented, and the technical problems are solved.
Disclosure of Invention
The invention aims to provide the method for evaluating the full-process green development effect of the high-water-content oil field, which has better operability, innovativeness and practicability and is beneficial to popularization.
The object of the invention can be achieved by the following technical measures: the method for evaluating the full-process green development effect of the high-water-cut oil field comprises the following steps of: step 1, obtaining yield data, energy consumption data and development cost data of high water-cut block mine field production; step 2, preprocessing the data acquired in the step 1; step 3, establishing a three-dimensional space coordinate system, connecting the data of the three ratios to form a space triangle, and calculating the included angle variance of the space triangle; and 4, evaluating the green development effect of the oil field by using the included angle variance of the space triangle.
The object of the invention can also be achieved by the following technical measures:
in step 1, the energy consumption data refers to electric energy and heat energy consumed by the injection, displacement, lifting, gathering and transportation links and the processing links, and the development cost includes the capital value of the manpower and material consumption generated by the injection, lifting and gathering and transportation links.
In step 2, the data obtained in step 1 are processed into a ratio E/Qo of energy consumption E to oil production Qo, a ratio C/Qo of development cost C to oil production Qo, and a ratio Qw/Qo of water production Qw to oil production Qo.
In step 3, a three-dimensional space coordinate system is established by taking the ratio E/Qo of energy consumption to oil production as a Z axis, the ratio C/Qo of development cost to oil production as a Y axis and the ratio Qw/Qo of water production to oil production as an X axis, the data of the three ratios are connected to form a space triangle, and the included angle variance s of the space triangle is calculated2。
In step 3, the variance s of the included angle of the space triangle is calculated2The formula of (1) is:
in the formula, s2Is the variance of the included angle of the space triangle;
α1、α2、α3respectively, 3 included angles.
In step 4, the included angle alpha is utilized2Quantitatively identifying a high-consumption development system and a low-consumption development system;
when 0 < s2When the power consumption is less than or equal to 1450, the system is developed with high consumption and low efficiency;
when s is2When the power is more than 1450, the system is developed with low consumption and high efficiency.
The invention discloses a method for evaluating the full-process green development effect of a high-water-cut oil field, which comprises the following steps of: acquiring yield data, energy consumption data and development cost data of high water-cut block mine field production, wherein the energy consumption data refers to electric energy and heat energy consumed in the steps of injection, displacement, lifting, gathering and transportation and processing, and the development cost comprises the capital values of manpower and material consumption in the steps of injection, lifting and gathering and transportation; preprocessing three types of data, namely respectively processing the data into a ratio of energy consumption to oil yield, a ratio of development cost to oil yield and a ratio of water yield to oil yield; establishing a three-dimensional space coordinate system by taking the ratio of energy consumption to oil production as a Z axis, the ratio of development cost to oil production as a Y axis and the ratio of water production to oil production as an X axis and connecting data of the three ratios to form a space triangle, and calculating the included angle variance of the space triangle; and further evaluating the green development effect of the high-water-content oil field by using the included angle variance of the space triangle. The oil field green development evaluation method has the advantages of clear technical thought, simple application, better operability, contribution to popularization and capability of providing a feasible new method for quantitative identification of high-water-content oil field green development evaluation.
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FIG. 1 is a flow chart of an embodiment of the method for evaluating the effect of the full-process green development of a high water-cut oil field according to the present invention;
FIG. 2 is a schematic diagram of the full green development process of a high water cut oil field in accordance with an embodiment of the present invention;
fig. 3 is a comparison graph of development effects before and after green development adjustment.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, fig. 1 is a flow chart of the method for evaluating the effect of the whole process green development of the high water cut oil field according to the present invention.
And step 102, on the basis of the step 101, preprocessing three types of data, namely, a ratio E/Qo of energy consumption E to oil production Qo, a ratio C/Qo of development cost C to oil production Qo and a ratio Qw/Qo of water production Qw to oil production Qo.
In step 103, on the basis of step 102, a three-dimensional space coordinate system is established by taking the ratio of energy consumption to oil production as a Z-axis, the ratio of development cost to oil production as a Y-axis, and the ratio of water production to oil production as an X-axis, and the data of the three ratios are connected to form a space triangle, and the included angle variance of the space triangle is calculated.
Specifically, on the basis of step 102, a three-dimensional space coordinate system is established by taking the ratio E/Qo of energy consumption to oil production as a Z axis, the ratio C/Qo of development cost to oil production as a Y axis, and the ratio Qw/Qo of water production to oil production as an X axis, data of the three ratios are connected to form a space triangle, and the included angle variance s of the space triangle is calculated2。
In the formula, s2Is the variance of the included angle of the space triangle;
α1、α2、α3respectively, 3 included angles.
In step 104, on the basis of step 103, the oil field green development effect is further evaluated by using the included angle variance of the space triangle.
I.e. using the angle of space alpha2Quantitatively identifying a high-consumption development system and a low-consumption development system;
when 0 < s2When the power consumption is less than or equal to 1450, the system is developed with high consumption and low efficiency;
when s is2When the power is more than 1450, the system is developed with low consumption and high efficiency.
In the three-dimensional space, the shape of the regulated green development is smaller in the three-dimensional spaces of Qw/Qo, C/Qo and E/Qo, which shows that the green development has a certain regulation effect.
Fig. 3 is a comparison graph of development effects before and after green development adjustment. The broken line represents the comprehensive evaluation before the green development adjustment, and the solid line represents the comprehensive evaluation after the green development adjustment. And after adjustment, the forms of Qw/Qo, C/Qo and E/Qo are smaller in a three-dimensional space.
In the specific example of the application of the invention, applied to a certain block of the victory oil area, as shown in fig. 2, the green development evaluation of different development stages is realized, and the method comprises the following steps:
in step 1, production data, energy consumption data, and development cost data for block mine production are obtained.
In step 2, on the basis of step 1, three types of data are preprocessed, and the data are respectively processed into a ratio E/Qo of energy consumption E to oil production Qo, a ratio C/Qo of development cost C to oil production Qo, and a ratio Qw/Qo of water production Qw to oil production Qo. When the water content of the calculation block is 95%, E/Qo is 273kw.h/t, C/Qo is 2360 yuan/ton, and Qw/Qo is 19.
In step 3, on the basis of step 2, a three-dimensional space coordinate system is established by taking the ratio of energy consumption to oil production as a Z axis, the ratio of development cost to oil production as a Y axis, and the ratio of water production to oil production as an X axis, data of the three ratios are connected to form a space triangle, and the included angle variance of the space triangle is calculated. The included angle B is 6.6 degrees, the included angle C is 90.0 degrees, the included angle A is 83.4 degrees, and the included angle variance of the space triangle is calculated
In step 4, on the basis of step 3, the oil field green development effect is further evaluated by using the included angle variance of the space triangle. By improving the development mode, the comprehensive energy consumption per ton of oil is reduced to 191kw.h/t, the water-oil ratio is 19, the water content is reduced to 90%, and the included angle variance s of the space triangle21536 the green development index of the oil field is obviously improved.
Claims (6)
1. The method for evaluating the full-process green development effect of the high-water-cut oil field is characterized by comprising the following steps of:
step 1, obtaining yield data, energy consumption data and development cost data of high water-cut block mine field production;
step 2, preprocessing the data acquired in the step 1;
step 3, establishing a three-dimensional space coordinate system, connecting the data of the three ratios to form a space triangle, and calculating the included angle variance of the space triangle;
and 4, evaluating the green development effect of the oil field by using the included angle variance of the space triangle.
2. The method for evaluating the full-process green development effect of the high-water-content oil field according to claim 1, wherein in the step 1, the energy consumption data refers to electric energy and heat energy consumed in the processes of injection, displacement, lifting, gathering and transportation and treatment, and the development cost includes the capital value of manpower and material consumption in the processes of injection, lifting and gathering and transportation.
3. The method for evaluating the full-process green development effect of the high water-cut oil field according to claim 2, characterized in that in the step 2, the data obtained in the step 1 are processed into a ratio E/Qo of energy consumption E to oil production Qo, a ratio C/Qo of development cost C to oil production Qo and a ratio Qw/Qo of water production Qw to oil production Qo.
4. The method for evaluating the full-process green development effect of the high water-cut oil field according to claim 3, characterized in that in the step 3, a three-dimensional space coordinate system is established by taking the ratio E/Qo of energy consumption to oil production as a Z axis, the ratio C/Qo of development cost to oil production as a Y axis, and the ratio Qw/Qo of water production to oil production as an X axis, the data of the three ratios are connected to form a space triangle, and the included angle variance s of the space triangle is calculated2。
5. The method for evaluating the effect of the full-flow green development of the high water cut oil field according to claim 4, wherein in the step 3, the included angle variance s of the space triangle is calculated2The formula of (1) is:
in the formula, s2Is the variance of the included angle of the space triangle;
α1、α2、α3respectively, 3 included angles.
6. The method for evaluating the full-process green development effect of the high water-cut oil field according to claim 5, wherein in the step 4, the included spatial angle alpha is used2Quantitatively identifying a high-consumption development system and a low-consumption development system;
when 0 < s2When the power consumption is less than or equal to 1450, the system is developed with high consumption and low efficiency;
when s is2At > 1450 hours, the method is low in consumption and high in efficiencyProvided is a system.
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