Calibration method, device, equipment and medium for new production capacity of crude oil in medium-high permeability reservoir

Abstract

The invention discloses a method, a device, equipment and a medium for calibrating the newly-built productivity of crude oil in a medium-high permeability reservoir. The method comprises the steps that the productivity type of a to-be-oil-extracted area is determined; determining a reference oil area based on the productivity type, and obtaining historical oil production data corresponding to the reference oil area; processing the historical oil production data to obtain the monthly decline rate of the average single-well daily oil production, and determining the average single-well daily oil production of the area to be subjected to oil production in the target month of the production year; and on the basis of the monthly declining rate of the average single well daily oil production, the average single well daily oil production of the multiple months and the target month and preset production parameters, the new production capacity of the area to be subjected to oil production is determined. The problem that in the prior art, the coincidence rate of the oil production capacity of the oil area predicted through a liquid production intensity method and the actual annual output of the second year of production is low is solved, the prediction accuracy of the oil production capacity of the oil area is improved, and the effect of guaranteeing the production stability of the oil area is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas exploration and development, and in particular to a method, device, equipment and medium for calibrating newly built production capacity of crude oil in medium- and high-permeability oil reservoirs. Background Art

[0002] With the development of oil and gas exploration and development technology, oil field production capacity prediction has also become an important task in oil field development. The prediction results of the production of new wells in the oil field are directly related to whether the crude oil production capacity construction block is profitable.

[0003] At present, the prediction method for oilfield capacity is usually through the liquid production intensity method, which calculates the daily production of the oil well under the unit production pressure difference through the liquid production intensity, and predicts the initial production capacity of the single well based on the comprehensive water content. However, with the influence of multiple factors such as resource degradation and engineering technical conditions, this prediction method is uncontrollable, resulting in inaccurate prediction of oilfield capacity, which in turn affects the stability of oilfield production. Summary of the invention

[0004] The present invention provides a method, device, equipment and medium for calibrating the newly built production capacity of crude oil in a medium-high permeability oil reservoir, so as to improve the accuracy of predicting the oil production capacity of the oil region and achieve the technical effect of ensuring the production stability of the oil region.

[0005] According to one aspect of the present invention, a method for calibrating the newly built production capacity of crude oil in a medium-high permeability reservoir is provided, the method comprising:

[0006] Determine the production capacity type of the area to be produced;

[0007] Determine a reference oil area based on the production capacity type, and obtain historical oil production data corresponding to the reference oil area; wherein the reference oil area includes the oil area to be produced or a similar oil area associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year;

[0008] Processing the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determining the average daily oil production of a single well in the target month of the production year of the oil production area;

[0009] The newly built production capacity of the area to be produced is determined based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the multiple months and the target month, and pre-set production parameters.

[0010] According to another aspect of the present invention, a device for calibrating the newly built production capacity of crude oil in a medium-high permeability reservoir is provided, the device comprising:

[0011] A capacity type determination module is used to determine the capacity type of the oil production area to be produced;

[0012] A reference oil area determination module is used to determine a reference oil area based on the production capacity type and obtain historical oil production data corresponding to the reference oil area; wherein the reference oil area includes the oil area to be produced or a similar oil area associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year;

[0013] A parameter determination module is used to process the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determine the average daily oil production of a single well in the target month of the production year of the oil production area;

[0014] The newly built production capacity determination module is used to determine the newly built production capacity of the oil production area based on the monthly decline rate of the average single-well daily oil production, the average single-well daily oil production of the multiple months and the target month, and pre-set production parameters.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for calibrating the newly built production capacity of crude oil in medium- and high-permeability reservoirs described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for calibrating the new production capacity of crude oil in a medium- and high-permeability reservoir as described in any embodiment of the present invention when executed.

[0020] The technical solution of the embodiment of the present invention determines the capacity type of the oil-producing area; determines the reference oil area based on the capacity type, and obtains the historical oil production data corresponding to the reference oil area; processes the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determines the average daily oil production of a single well in the target month of the production year of the oil-producing area; determines the new capacity of the oil-producing area based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and pre-set production parameters, thereby solving the problem of predicting the oil production capacity of an oil area by the liquid production intensity method in the prior art and the problem of predicting the oil production capacity of an oil area by the production intensity method. In order to solve the problem of low compliance rate of actual annual production in the second year, we analyzed the production capacity type of the oil-producing area to be produced and obtained historical oil production data that can reflect the oil field situation of the oil-producing area. Then, we determined the monthly decline rate of the average daily oil production of a single well through the historical oil production data. Then, combined with the average daily oil production of a single well in the target month of the year of production, we determined the new production capacity of the oil-producing area to be produced, thereby realizing the linkage between production capacity and output. The new production capacity can truly reflect the actual production capacity of the oil-producing area in the second year after production, thereby improving the accuracy of the prediction of the oil production capacity of the oil field, thereby achieving the technical effect of ensuring the production stability of the oil field.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a flow chart of a method for calibrating new production capacity of crude oil in a medium-high permeability reservoir provided in accordance with the first embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of a monthly decline curve of the average daily oil production of a single well in water flooding development provided by Example 2 of the present invention;

[0025] Figure 3 is a schematic diagram of a monthly decline curve of the average daily oil production of a single well in chemical flooding development provided by Example 2 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a newly constructed production capacity calibration device for crude oil in a medium-high permeability reservoir provided according to the third embodiment of the present invention;

[0027] Figure 5It is a structural schematic diagram of an electronic device for implementing a method for calibrating a new production capacity of crude oil in a medium- and high-permeability reservoir according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] Figure 1 This is a flow chart of a method for calibrating the newly built production capacity of crude oil in a medium-high permeability reservoir according to the first embodiment of the present invention. This embodiment can be applied to the situation of calibrating the production capacity of a waiting oil production area. The method can be executed by a calibration device for newly built production capacity of crude oil in a medium-high permeability reservoir. The calibration device for newly built production capacity of crude oil in a medium-high permeability reservoir can be implemented in the form of hardware and / or software. The calibration device for newly built production capacity of crude oil in a medium-high permeability reservoir can be configured in a computing device. Figure 1 As shown, the method includes:

[0032] S110. Determine the production capacity type of the area to be produced.

[0033] The oil recovery area may be an oil field block of a medium to high permeability oil reservoir type of crude oil, in which oil can be recovered by putting oil wells into production. The capacity type may characterize the capacity development degree of the oil field.

[0034] Specifically, the oilfield type of the oilfield to be produced can be evaluated by combining the development time of the oilfield to be produced. For example, if the development time of the oilfield to be produced reaches the preset number of years, it is considered that the oilfield has been developed for a long time, and its oilfield type can be marked as an old area type; if the development time of the oilfield to be produced does not reach the preset number of years, it is considered that the oilfield has been developed for a short time or has not been developed, and its oilfield type can be marked as a new area type.

[0035] For example, oil field A has been developed for many years and is an old field; oil field B has been in production for a short time and is a new field.

[0036] S120. Determine a reference oil region based on the production capacity type, and obtain historical oil production data corresponding to the reference oil region.

[0037] The reference oil area includes the oil area to be produced or similar oil areas associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year. It should be noted that for some new oil areas to be produced, the development time is short or they have not been developed, and the oil production data of this type of oil area is relatively small. If the oil production data of this type of oil area is collected to calibrate the new production capacity of crude oil in medium and high permeability reservoirs in the oil area to be produced, there is a problem of low prediction accuracy.

[0038] In order to improve the accuracy of the calibration of the newly built production capacity of crude oil in medium- and high-permeability reservoirs, the production capacity type of the oil-to-be-produced area can be used to determine whether to use the oil-to-be-produced area itself as a reference oil area, or to select some other oil areas that are similar to the oil-to-be-produced area in various dimensions as reference oil areas. Specifically, the reference oil area is determined based on the production capacity type, including: if the production capacity type is a new area type, based on the first associated information of the oil-to-be-produced area and the second associated information of at least one produced oil area, a similar oil area associated with the oil-to-be-produced area is determined from the produced oil areas, and the similar oil area is used as a reference oil area; if the production capacity type is an old area type, the oil-to-be-produced area is determined as a reference oil area.

[0039] The produced oil area may be an oil area that has been developed and stored in the database. The associated information of each oil area may include oil area attribute information corresponding to the oil area itself, for example, the type of oil reservoirs distributed in the oil area, the distribution of oil reservoirs, altitude, geological structure, environmental information and other dimensional information.

[0040] In this embodiment, if the capacity type is a new area type, then the first associated information of the oil area to be produced can be compared with the second associated information of each oil-producing area, and the oil area that is highly similar to the oil area to be produced in various dimensions can be selected from the produced oil areas, and the similar oil area can be used as a reference oil area. Exemplarily, an oil area with the same basin as the oil area to be produced, similar oil reservoir properties, similar surface conditions of the oil reservoir, mining technology, development methods, development history, development well network, well spacing, etc. is selected as a reference oil area. If the capacity type is an old area type, the oil area to be produced can be directly used as a reference oil area, and the oil production data of the reference oil area in the historical time period can be obtained as the historical oil production data, so as to estimate the monthly decline rate of the average daily oil production of a single well in the oil area to be produced through the historical oil production data.

[0041] In this embodiment, based on the first association information of the area to be produced and the second association information of at least one already produced oil area, similar oil areas associated with the area to be produced are determined from the already produced oil areas, including: based on the first association information of the area to be produced and the second association information of at least one already produced oil area, determining the similarity between the area to be produced and each already produced oil area; based on each similarity, determining the similar oil areas associated with the area to be produced.

[0042] Among them, the associated information includes reservoir type, geological type, development method and mining method. Similarity can be used to characterize the similarity between two oil fields.

[0043] Specifically, the first associated information of the oil-producing area and the second associated information of each oil-producing area can be respectively extracted to obtain a first feature vector corresponding to the first associated information and a second feature vector corresponding to each second associated information. Further, the distance between the first feature vector and each second feature vector is calculated using a similarity calculation method (for example, Jaccard similarity coefficient, cosine similarity, Pearson correlation coefficient, etc.), and the distance is used to characterize the similarity between the oil-producing area and the oil-producing area. The smaller the distance, the more similar, and the larger the distance, the less similar. The oil-producing area corresponding to the minimum similarity can be used as the oil area most similar to the oil-producing area, and the similar oil area can be used as the reference oil area.

[0044] In order to improve the accuracy of production capacity prediction, the historical oil production data of the reference oil area can be obtained based on the year to be predicted of the oil area to be produced. For example, the historical oil production data of multiple months in the historical years close to the year to be predicted is obtained. For example, the oil production capacity of the second year 12 of the current year 11 to be predicted, the historical oil production data can include the average daily oil production of a single well in each month from January to December 11. Alternatively, according to the production stage of the oil area to be produced, the historical oil production data of the reference oil area in the production stage can be obtained. For example, the production stage of the new well in the oil area to be produced after it is put into production is the peak period of effectiveness, then the historical oil production data of the reference oil area at the peak period of effectiveness can be obtained.

[0045] S130. Process the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well.

[0046] In this embodiment, the monthly decline degree of oil production can be analyzed by the average daily oil production of a single well in each month in the historical oil production data, and the monthly decline rate of the average daily oil production of a single well in the reference oil region can be calculated. Specifically, the historical oil production data is processed to obtain the monthly decline rate of the average daily oil production of a single well, including: analyzing the oil production law based on the average daily oil production of a single well in multiple months to generate a decline curve of the average daily oil production of a single well; and determining the monthly decline rate of the average daily oil production of a single well based on the decline curve of the average daily oil production of a single well.

[0047] In this embodiment, the average daily oil production of a single well can be analyzed for multiple months to fit the monthly average daily oil production decline curve, and the monthly decline rate of the average daily oil production of a single well can be calculated by calculating the average daily oil production of each node on the average daily oil production decline curve. Figure 2 Block X (i.e. the oil field to be tested) is a new well put into production in the old field. Therefore, when selecting the monthly decline rate in the second year, the decline of new wells in Block X in previous years can be referred to. The monthly decline rate can be obtained by analyzing the monthly decline law of the average daily oil production of the oil wells put into production in Block X and fitting the decline curve of the average daily oil production of the wells.

[0048] It should be noted that in order to ensure the accuracy of the newly built production capacity determination, the decline rate detection condition can also be pre-configured. The decline rate detection condition can be a condition for detecting whether there is a decline law in the average daily oil production of a single well. For example, it can be a decline rate range. If the decline rate of the average daily oil production of a single well is within the decline rate range, it is considered that there is a decline law in the average daily oil production of a single well, and the average daily oil production decline rate of the average single well reaches the preset decline condition; if the monthly decline rate of the average daily oil production of a single well is not within the decline rate range, it is considered that there is no decline law in the average daily oil production of a single well, that is, the monthly decline rate of the average daily oil production of a single well does not reach the preset decline condition. It should be noted that if the monthly decline rate of the average daily oil production of a single well does not reach the preset decline conditions, it may be because the historical oil production data of the old area type oil-to-be-produced area does not have a regular decline in the average daily oil production of a single well. If the monthly decline rate of the average daily oil production of a single well does not reach the preset decline conditions, then similar oil areas corresponding to the oil-to-be-produced area are determined from the oil-producing areas, and the historical oil production data are updated based on the historical oil production information of the similar oil areas. In other words, if the monthly decline rate of the average daily oil production of a single well does not reach the preset decline conditions, then similar oil areas corresponding to the oil-to-be-produced area can be reselected as reference oil areas, and the historical oil production data can be updated based on the historical oil production information of similar oil areas. The monthly decline rate of the average daily oil production of a single well can be re-determined based on the updated historical oil production data to conduct production capacity forecasting. Under the condition that the monthly decline rate of the average daily oil production of a single well reaches the preset decline conditions, the new production capacity of the oil-to-be-produced area is determined.

[0049] S140. Determine the average daily oil production of a single well in the target month of the year of production in the oil production area.

[0050] The target month may be the nearest month to the current year of the production year, such as December.

[0051] In this embodiment, determining the average daily oil production of a single well in the target month of the year of production includes: determining the monthly oil production of the target month of the year of production; and determining the average daily oil production of a single well in the target month based on the monthly oil production, the actual number of production wells and the actual number of production days in the target month.

[0052] Specifically, the month closest to the year to be predicted can be selected from multiple months as the target month, such as December. Furthermore, the monthly oil production in December of the target year of production can be calculated and the ratio of the actual number of production days in December can be calculated, and the result can be compared with the actual number of production wells in December. The obtained ratio is used as the average daily oil production of a single well in the target month. The average daily oil production of a single well can represent the average daily production capacity of the oil wells in production in December.

[0053] S150, determining the new production capacity of the area to be produced based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and pre-set production parameters.

[0054] The pre-set production parameters include but are not limited to the number of production days and the number of oil wells, for example, the number of production days is 300 days and the number of oil wells is 13. The newly built production capacity can be understood as the newly built crude oil production capacity, which can represent the cumulative oil production of the oil production area in the second year after full production.

[0055] In this embodiment, based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and pre-set production parameters, the new production capacity of the area to be produced is determined, including: determining the average daily production capacity of the area to be produced in the year following the year of production based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month; determining the new production capacity of the area to be produced based on the average daily production capacity of a single well and production parameters; wherein the production parameters include the number of production days and the number of oil wells.

[0056] In this embodiment, the average daily production capacity of a single well in the oil production area to be produced can be calculated by the monthly decline rate of the average daily oil production of a single well and the average daily oil production of a single well in the target month. The average daily production capacity of a single well can represent the average daily production capacity of a single well in the predicted time (such as the second year) of the oil wells put into production. The average daily production capacity of a single well, the number of production days, and the number of oil wells are multiplied to obtain a product value, and then the product value is divided by a preset parameter, and the quotient value can be used as the new production capacity of the oil production area to be produced. The new production capacity can represent the production capacity of the oil production area to be produced at the predicted time, so as to reflect the oil production capacity of the oil production area in the second year of production through the new production capacity.

[0057] For example, the average daily production capacity of a single well is q 平 , production days is T, number of oil wells is W, preset parameters are 10000, new capacity is Q 区x =q 平 *W*T / 10000.

[0058] In this embodiment, based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the month and the target month, the average daily production capacity of a single well in the oil production area in the next year after the year of production is determined, including: for each month, based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the month and the target month, the intermediate value corresponding to the month is determined; based on the total number of the intermediate values ​​and the months, the average daily production capacity of a single well in the next year after the year of production is determined. It should be noted that the implementation method for determining the intermediate value corresponding to each month is the same, and the determination of the intermediate value corresponding to any one of the months is used as an example for introduction.

[0059] Specifically, for a certain month, the preset threshold (such as 1) and the monthly decline rate of the average daily oil production of a single well can be processed as a difference to obtain a difference. Based on the value of the month, the difference is processed as an exponent of the value, and the value obtained by the exponential processing is multiplied by the daily production capacity of a single well in the target month, and the product value can be used as the corresponding intermediate value of the month. Correspondingly, the intermediate value corresponding to each month can be obtained, and all the intermediate values ​​can be summed, and the sum obtained can be processed as a quotient with the total number of months to obtain a quotient value, which can be used as the average daily production capacity of a single well in the next year after the year of production.

[0060] For example, the capacity calculation function can be used: Calculate the average daily production capacity of a single well q 平 Among them, D m is the monthly decreasing rate, t is the monthly value, q 末 It is the average daily oil production per well in December.

[0061] The technical solution of this embodiment determines the capacity type of the oil-producing area; determines the reference oil area based on the capacity type, and obtains the historical oil production data corresponding to the reference oil area; processes the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determines the average daily oil production of a single well in the target month of the production year of the oil-producing area; determines the new capacity of the oil-producing area based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and the pre-set production parameters, which solves the problem of predicting the oil production capacity of an oil area by the liquid production intensity method in the prior art and comparing it with the monthly decline rate of the average daily oil production of a single well in the target month of the production year. In order to solve the problem of low compliance rate of actual annual production in two years, we analyzed the production capacity type of the oil-producing area and obtained historical oil production data that can reflect the oil field situation of the oil-producing area. Then, we determined the monthly decline rate of the average daily oil production of a single well through the historical oil production data. Then, combined with the average daily oil production of a single well in the target month of the year of production, we determined the new production capacity of the oil-producing area, realized the linkage between production capacity and output, and made the new production capacity truly reflect the actual production capacity of the oil-producing area in the second year after production, thereby improving the accuracy of the prediction of the oil production capacity of the oil field, and thus achieving the technical effect of ensuring the production stability of the oil field.

[0062] Embodiment 2

[0063] As an optional embodiment of the above embodiment, in order to make those skilled in the art further understand the technical solution of the embodiment of the present invention, a specific application scenario example is given. For details, please refer to the following specific content.

[0064] In this embodiment, the oil production area to be produced can be determined based on the project or block as a unit. In the process of calibrating the production capacity of the oil production area to be produced, the production capacity of the oil production area to be produced can be determined by using the following method: Calculate the average daily production capacity of a single well in the second year of the oil production area (i.e., the average daily production capacity of a single well), where q 末 Take the average daily oil production of the wells put into production in December of the current year (i.e., the daily production capacity of the wells in the target month), and use the production decline method, analogy method, and other methods to predict the monthly decline rate Dm in the second year according to the decline law of the wells put into production in the oil-producing area. For example, for the oil-producing area with an obvious decline law in production, the production decline method is used to predict Dm, while for the oil-producing area with a short production time or no decline law, the decline law of the adjacent area in the same basin with similar reservoir conditions can be used to determine the value of Dm. After determining the average daily production capacity of the wells in the second year of production, use Q 区x =q 平 *W*T / 10000 is used to calculate the production capacity of the oil-producing area in the second year, where W is the total number of oil wells put into production in the oil-producing area, and T is the average number of days for well opening in the second year in the oil-producing area. For wells producing by spontaneous flow, the production days can be 330 days, and for production wells developed by natural energy, water drive, and chemical drive, the production days can be 300 days.

[0065] For example, the actual monthly oil production of 13 new wells put into production in Block X of the oil field in 2021 is 260 tons in December of that year, and the actual production days are 25 days. Then the average daily oil production of a single well in December is q 末 =260 / 25 / 13=0.8d / t. For the water flooding development of Block X in recent years, the decline of new wells put into production in the first three years of production can be found in Figure 2 , the annual decline rate of the new well in the second year is 9.52%, and the monthly decline rate of the new well in the second year is Dm = 0.9%. The average daily oil production of a single well in December 2021 is 0.8d / t, and it starts to decline at a monthly decline rate of 0.9%. The average daily production capacity of a single well in the second year is calculated as: Right now Calculate q 平 =0.75t / d. The new crude oil production capacity of this block in 2021 is Q 区x =q 平 *W*T / 10000, that is, Q 区x =0.75*13*300 / 10000=0.29 thousand tons.

[0066] It should be noted that for the oil recovery area of ​​chemical flooding in medium- and high-permeability reservoirs, Q 区x =q 平 *W*T / 10000 calibrated production capacity, of which the average daily production capacity of a single well in the second year is q 平According to the production stage of the newly drilled chemical flooding well after it is put into production, the decline method and analogy method can be used for prediction. For example, in the blank water flooding stage, the water flooding decline law is used to predict the injection and production status of the block; in the injection stage, the analogy method is used to predict the average daily production capacity of a single well in the second year.

[0067] For example, the Y area (similar oil area) and the M area (the oil area to be tested) belong to the same oil reservoir. The mining plans, development methods, and development histories adopted by the two blocks are similar. The production time of the Y block is longer than that of the M block, and the chemical flooding development law is more obvious during the injection stage. The monthly decline rate Dm of the second year of the M block can be determined by analogy with the monthly decline rate of the new wells put into production by chemical flooding in the Y area in the second year. By counting the actual monthly oil production of 9,900 tons of 125 wells in the M area oil reservoir in December 2021 and the actual production days of 28 days, the average daily oil production of a single well in December 2021 is calculated. 末 =0.99*10000 / 125 / 28=2.82t / d.

[0068] Considering the changing law of indicators in the whole cycle of chemical flooding, the wells put into production in Y area from 2013 to 2020 were statistically analyzed according to the time of production (the analysis of the decreasing law can be found in Figure 3 ), the monthly decline rate of the average daily oil production of a new well in the second year of production is determined to be -3.84%. By analogy with the decline of the Y reservoir, the average daily production capacity of a single well in the first month of 2022 is determined to be 2.82*(1-(-3.84%))=2.93, and the average daily production capacity of a single well in the second month is 2.82*(1-(-3.84%)) 2 =3.04, and so on for the 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, and 12th respectively: 3.16, 3.28, 3.4, 3.54, 3.67, 3.81, 3.96, 4.11, 4.16, and 4.43 (see Figure 3 The curve in the dashed box decreases), then the average daily production capacity of a single well from January to December 2022 is the sum of the average daily production capacity of a single well in the 12 months, that is, 3.62t / d. 区x =3.62*125*300 / 10000=135,700 tons.

[0069] The technical solution of this embodiment determines the capacity type of the oil-producing area; determines the reference oil area based on the capacity type, and obtains the historical oil production data corresponding to the reference oil area; processes the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determines the average daily oil production of a single well in the target month of the production year of the oil-producing area; determines the new capacity of the oil-producing area based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and the pre-set production parameters, which solves the problem of predicting the oil production capacity of an oil area by the liquid production intensity method in the prior art and comparing it with the monthly decline rate of the average daily oil production of a single well in the target month of the production year. In order to solve the problem of low compliance rate of actual annual production in two years, we analyzed the production capacity type of the oil-producing area and obtained historical oil production data that can reflect the oil field situation of the oil-producing area. Then, we determined the monthly decline rate of the average daily oil production of a single well through the historical oil production data. Then, combined with the average daily oil production of a single well in the oil-producing area in the target month of production, we determined the new production capacity of the oil-producing area, realized the linkage between production capacity and output, and made the new production capacity truly reflect the actual production capacity of the oil-producing area in the second year after production, thereby improving the accuracy of the prediction of the oil production capacity of the oil field, and thus achieving the technical effect of ensuring the production stability of the oil field.

[0070] Embodiment 3

[0071] Figure 4 This is a schematic diagram of the structure of a new production capacity calibration device for medium-high permeability oil reservoirs provided by the third embodiment of the present invention. Figure 4 As shown, the device includes: a capacity type determination module 210, a reference oil field determination module 220, a parameter determination module 230 and a new capacity determination module 240.

[0072] Among them, the capacity type determination module 210 is used to determine the capacity type of the oil area to be produced; the reference oil area determination module 220 is used to determine the reference oil area based on the capacity type and obtain the historical oil production data corresponding to the reference oil area; wherein the reference oil area includes the oil area to be produced or a similar oil area associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year; the parameter determination module 230 is used to process the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determine the average daily oil production of a single well in the target month of the production year of the oil area to be produced; the new capacity determination module 240 is used to determine the new capacity of the oil area to be produced based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the multiple months, the target month and the pre-set production parameters.

[0073] The technical solution of this embodiment determines the capacity type of the oil-producing area; determines the reference oil area based on the capacity type, and obtains the historical oil production data corresponding to the reference oil area; processes the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determines the average daily oil production of a single well in the target month of the production year of the oil-producing area; determines the new capacity of the oil-producing area based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in multiple months and the target month, and the pre-set production parameters, which solves the problem of predicting the oil production capacity of an oil area by the liquid production intensity method in the prior art, and the second In order to solve the problem of low compliance rate of actual annual oil production, we analyzed the production capacity type of the oil-producing area to be produced and obtained historical oil production data that can reflect the oil field situation of the oil-producing area. Then, we determined the monthly decline rate of the average daily oil production of a single well through the historical oil production data. Then, combined with the average daily oil production of a single well in the target month of the year of production in the oil-producing area, we determined the new production capacity of the oil-producing area to be produced, thereby realizing the linkage between production capacity and output, so that the new production capacity can truly reflect the actual production capacity of the oil-producing area in the second year after production, thereby improving the accuracy of the prediction of the oil production capacity of the oil field, and thus achieving the technical effect of ensuring the production stability of the oil field.

[0074] On the basis of the above-mentioned device, optionally, the reference oil area determination module 220 is used to determine, if the production capacity type is a new area type, a similar oil area associated with the area to be produced from the produced oil areas based on the first associated information of the area to be produced and the second associated information of at least one produced oil area, and use the similar oil area as a reference oil area; if the production capacity type is an old area type, determine the area to be produced as a reference oil area.

[0075] On the basis of the above device, optionally, the reference oil area determination module 220 includes a similar oil area determination unit.

[0076] A similar oil area determination unit is used to determine the similarity between the area to be produced and each of the produced oil areas based on the first associated information of the area to be produced and the second associated information of at least one produced oil area; wherein the associated information includes reservoir type, geological type, development method and exploitation method; based on each of the similarities, determine the similar oil areas associated with the area to be produced.

[0077] On the basis of the above device, optionally, the parameter determination module 230 includes a decline curve determination unit and a monthly decline rate determination unit of the average daily oil production of a single well.

[0078] A decline curve determination unit, configured to analyze the oil production law according to the average daily oil production of a single well in the plurality of months, and generate a decline curve of the average daily oil production of a single well;

[0079] The monthly decline rate determination unit of the average daily oil production of a single well is used to determine the monthly decline rate of the average daily oil production of a single well based on the decline curve.

[0080] On the basis of the above device, optionally, the parameter determination module 230 further includes a monthly oil production determination unit and a target monthly average single-well daily oil production determination unit.

[0081] A monthly oil production determination unit, used to determine the monthly oil production of the oil production area in the target month of the year of production;

[0082] The target monthly average single-well daily oil production determination unit is used to determine the average single-well daily oil production in the target month based on the monthly oil production, the actual number of production wells and the actual production days in the target month.

[0083] On the basis of the above device, optionally, the newly built production capacity determination module 240 includes an average single well daily production capacity determination unit and a newly built production capacity determination unit.

[0084] An average single-well daily production capacity determination unit is used to determine the average single-well daily production capacity of the oil production area in the next year after the production year based on the monthly decline rate of the average single-well daily oil production, the average single-well daily oil production of the multiple months and the target month;

[0085] A newly built production capacity determination unit, used to determine the newly built production capacity of the oil production area based on the average daily production capacity of a single well and the production parameters; wherein the production parameters include production days and the number of oil wells;

[0086] Based on the above device, optionally, the average single-well daily production capacity determination unit includes an intermediate value determination unit and an estimated daily production capacity determination unit.

[0087] An intermediate value determination unit, for each of the months, based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the month and the target month, determines an intermediate value corresponding to the month;

[0088] The estimated daily production capacity determination unit is used to determine the average single-well daily production capacity based on each of the intermediate values ​​and the total number of the months.

[0089] The device for calibrating the newly built production capacity of crude oil in medium- and high-permeability reservoirs provided in an embodiment of the present invention can execute the method for calibrating the newly built production capacity of crude oil in medium- and high-permeability reservoirs provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0090] Embodiment 4

[0091] Figure 5It is a structural schematic diagram of an electronic device for implementing a method for calibrating the newly built production capacity of crude oil in a medium-high permeability reservoir according to an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0092] like Figure 5 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0093] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0094] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The processor 11 executes the various methods and processes described above, such as a method for calibrating the newly built production capacity of crude oil in a medium-high permeability reservoir.

[0095] In some embodiments, the method for calibrating the newly built productivity of crude oil in medium-high permeability reservoirs can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for calibrating the newly built productivity of crude oil in medium-high permeability reservoirs described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the method for calibrating the newly built productivity of crude oil in medium-high permeability reservoirs by any other appropriate means (for example, by means of firmware).

[0096] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0097] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0098] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0099] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0100] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0101] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0102] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0103] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for calibrating the newly built production capacity of crude oil in medium- and high-permeability reservoirs, characterized in that: include: Determine the production capacity type of the area to be produced; Determine a reference oil area based on the production capacity type, and obtain historical oil production data corresponding to the reference oil area; wherein the reference oil area includes the oil area to be produced or a similar oil area associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year; Processing the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determining the average daily oil production of a single well in the target month of the production year of the oil production area; The newly built production capacity of the area to be produced is determined based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the multiple months and the target month, and pre-set production parameters.

2. The method according to claim 1, characterized in that The determining of the reference oil region based on the production capacity type comprises: If the production capacity type is a new area type, based on the first associated information of the oil area to be produced and the second associated information of at least one oil producing area, a similar oil area associated with the oil area to be produced is determined from the oil producing areas, and the similar oil area is used as a reference oil area; If the production capacity type is an old area type, the area to be produced is determined to be a reference oil area.

3. The method according to claim 2, characterized in that The determining, from the produced oil areas, similar oil areas associated with the area to be produced based on the first associated information of the area to be produced and the second associated information of at least one produced oil area, comprises: Based on the first associated information of the oil-to-be-extracted area and the second associated information of at least one oil-producing area, determining the similarity between the oil-to-be-extracted area and each of the oil-producing areas; wherein the associated information includes reservoir type, geological type, development method and production method; Based on the respective similarities, similar oil areas associated with the area to be produced are determined.

4. The method according to claim 1, characterized in that: The processing of the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well includes: Analyzing the oil production rules based on the average daily oil production of a single well in the multiple months, and generating a decreasing curve of the average daily oil production of a single well; The monthly decline rate of the average daily oil production per well is determined based on the decline curve.

5. The method according to claim 1, characterized in that The determination of the average daily oil production of a single well in the target month of the year of production in the oil production area includes: Determine the monthly oil production of the oil production area in the target month of the year of production; Based on the monthly oil production, the actual number of production wells and the actual production days in the target month, the average daily oil production per well in the target month is determined.

6. The method according to claim 1, characterized in that The determining of the newly built production capacity of the oil production area based on the monthly decline rate of the average daily oil production of a single well, the average daily oil production of a single well in the target month and the preset production parameters includes: Determine the average daily production capacity of a single well of the oil production area in the next year after the year of production based on the monthly decline rate of the average daily production of a single well, the average daily production of a single well of the multiple months and the target month; The newly built production capacity of the oil production area is determined based on the average daily production capacity of a single well and the production parameters; wherein the production parameters include the number of production days and the number of oil wells.

7. The method according to claim 6, characterized in that The determining of the average single-well daily production capacity of the oil production area in the next year after the production year based on the monthly decline rate of the average single-well daily oil production, the average single-well daily oil production of the multiple months and the target month includes: For each of the months, based on the monthly decline rate of the average daily oil production per well, the average daily oil production per well in the month and the target month, determine a median value corresponding to the month; Based on each of the intermediate values ​​and the total number of the months, the average daily production capacity of a single well is determined.

8. A new production capacity calibration device for crude oil in medium-high permeability reservoirs, characterized in that: include: A capacity type determination module is used to determine the capacity type of the oil production area; A reference oil area determination module is used to determine a reference oil area based on the production capacity type and obtain historical oil production data corresponding to the reference oil area; wherein the reference oil area includes the oil area to be produced or a similar oil area associated with the oil area to be produced; the historical oil production data includes the average daily oil production of a single well in multiple months in at least one production year; A parameter determination module is used to process the historical oil production data to obtain the monthly decline rate of the average daily oil production of a single well, and determine the average daily oil production of a single well in the target month of the production year of the oil production area; The newly built production capacity determination module is used to determine the newly built production capacity of the oil production area based on the monthly decline rate of the average single-well daily oil production, the average single-well daily oil production of the multiple months and the target month, and pre-set production parameters.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for calibrating the new production capacity of crude oil in medium- and high-permeability reservoirs according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for calibrating the newly-built production capacity of crude oil in a medium- and high-permeability reservoir according to any one of claims 1 to 7 when executed.

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