Injection-production corresponding relation identification method and device, computer equipment and storage medium

Abstract

The invention discloses an injection-production corresponding relation recognition method and device, computer equipment and a storage medium. The method comprises the steps that a, a target block unit is selected, and effective water injection wells and effective oil production wells in the target block unit are obtained; b, a target effective water injection well is selected from the effective water injection wells; c, based on the first production horizon of the target effective water injection well and the second production horizon of the effective oil producing well, determining the target effective oil producing well; d, collecting tracer monitoring data of the target effective water injection well, and determining a primary oil production well according to the tracer monitoring data and the target effective oil production well; and e, calculating a correlation coefficient based on the target effective water injection well and the primary oil production well, and if the correlation coefficient meets a preset relation threshold value, determining that an injection-production corresponding relation exists between the target effective water injection well and the primary oil production well. By means of the scheme, the accuracy of injection-production corresponding relation recognition and the efficiency of oilfield development are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of digital oilfield construction, and in particular to a method, device, computer equipment and storage medium for identifying an injection-production correspondence relationship. Background Art

[0002] Domestic oil fields have entered the high water content development stage as a whole, with high development costs and a sharp reduction in the number of employees. Traditional development technologies and working methods are facing severe challenges. In oil field development work, the identification of injection-production correspondence is generally done by technicians through the construction of well location maps, oil layer connectivity and production layers. After preliminary determination, manual correction is made through the dynamic correspondence between injection and production. All of this is done manually, requiring technicians to have a certain theoretical and practical experience.

[0003] At present, digital transformation and intelligent development have become an effective way for oilfield companies to cope with low-cost development and staff shortages. Automating and intelligentizing a large amount of basic data collection, collation and analysis can enable technical personnel to devote more energy to the core research and formulation of countermeasures, thereby improving work efficiency and work quality. Among them, the automatic identification of the injection-production correspondence (i.e., the injection-production well group) is an important part of the construction of digital oilfields. During the development of oilfields, it is necessary to dynamically analyze the development status at any time, and formulate adjustment measures and plans in a timely manner to continuously improve the development status. In particular, the analysis of the injection and production status in water injection development oilfields is the focus, and it is often necessary to conduct specific production dynamic analysis of each injection-production corresponding well group. Therefore, the establishment of automatic identification of the injection-production correspondence is the basis. Summary of the invention

[0004] In view of this, the present invention proposes a method, device, computer equipment and storage medium for identifying the injection-production correspondence relationship, which solves the problems of high manpower consumption and low work efficiency in identifying the injection-production correspondence relationship during oil field development, releases the production capacity of developers and improves the work efficiency of developers.

[0005] Based on the above purpose, one aspect of an embodiment of the present invention provides a method for identifying an injection-production correspondence relationship, which specifically includes the following steps: a. selecting a target block unit, and obtaining effective water injection wells and effective oil production wells in the target block unit; b. selecting a target effective water injection well from the effective water injection wells; c. determining a target effective oil production well based on a first production layer of the target effective water injection well and a second production layer of the effective oil production well; d. collecting tracer monitoring data of the target effective water injection well, and determining a preliminary oil production well based on the tracer monitoring data and the target effective oil production well; e. calculating a correlation coefficient based on the target effective water injection well and the preliminary oil production well, and if the correlation coefficient meets a preset relationship threshold, determining that there is an injection-production correspondence relationship between the target effective water injection well and the preliminary oil production well.

[0006] In some embodiments, the effective water injection well in step a is a water injection well whose production days in the past 12 months are not 0, and which has not been scrapped or has not been re-injected after re-pumping. The effective oil production well is an oil production well whose production days in the past 12 months are not 0, and which has not been scrapped or has not been re-injected after re-injection.

[0007] In some embodiments, the first production layer in step c is the current production layer of the target effective water injection well, and the second production layer is the current production layer of the effective oil production well. Step c includes: if the first production layer and the second production layer have the same layer, the corresponding effective oil production well will be used as the target effective oil production well.

[0008] In some embodiments, step d includes: if the target effective water injection well has tracer monitoring data, obtaining the most recent injection date of the tracer, the sampling well number, and the earliest conversion date of the target effective oil production well, and determining a preliminary oil production well based on the acquired information; if the target effective water injection well does not have tracer monitoring data, using the target effective oil production well as a preliminary oil production well.

[0009] In some embodiments, the method of obtaining the most recent injection date of the tracer, the sampling well number, and the earliest conversion date of the target effective oil production well, and determining a preliminary oil production well based on the obtained information, includes: taking the target effective oil production well with the same well number as the sampling well as the preliminary oil production well; or taking the target effective oil production well with the earliest conversion date after the injection date as the preliminary oil production well.

[0010] In some embodiments, step e includes: obtaining the cumulative water injection volume of the target effective water injection well in the first period, and the daily liquid production, dynamic liquid level and water content data of the preliminary oil production well in the first period; respectively calculating the correlation coefficients between the cumulative water injection volume and the daily liquid production, the dynamic liquid level and the water content data; when any one of the correlation coefficients meets the preset relationship threshold, determining the initial dynamic correspondence between the target effective water injection well and the preliminary oil production well.

[0011] In some embodiments, the method also includes: obtaining the cumulative water injection volume of the target effective water injection well in the second period, and the daily liquid production and dynamic liquid level of the preliminary oil production well in the second period; respectively calculating the correlation coefficients between the cumulative water injection volume and the daily liquid production and the dynamic liquid level; when any one of the correlation coefficients meets the preset relationship threshold, determining the recent dynamic correspondence between the target effective water injection well and the preliminary oil production well.

[0012] In some embodiments, the method includes: if the initial dynamics of the injection-transfer and / or the recent dynamics of the injection-transfer and / or the injection-transfer correspond, determining that there is an injection-production correspondence relationship between the target water injection well and the primary oil production well.

[0013] In some embodiments, the first period is the last 12 months starting from one month before the target effective water injection well is re-injected.

[0014] In some embodiments, the second period is the 12 months before the current moment.

[0015] In some embodiments, the method further comprises the following steps: f. repeating steps b to e to determine all injection-production correspondences of the target block unit.

[0016] In some embodiments, the method further comprises the following steps: g. Repeating steps a to f to determine all injection-production correspondences of all block units.

[0017] In some embodiments, it further comprises:

[0018] Another aspect of the embodiments of the present invention provides an injection-production correspondence recognition device that executes the above method.

[0019] According to another aspect of an embodiment of the present invention, a computer device is provided, comprising: at least one processor; and a memory, wherein the memory stores a computer program executable on the processor, and the computer program implements the steps of the above method when executed by the processor.

[0020] According to another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, which stores a computer program that implements the above method steps when executed by a processor.

[0021] The present invention has at least the following beneficial technical effects: by selecting a target effective water injection well in a target block unit and determining a target effective oil production well related to the target effective water injection well, a preliminary oil production well is determined according to data information collected from the target effective water injection well and the target effective oil production well, and a correlation coefficient for determining whether there is a corresponding relationship between the target effective water injection well and the preliminary oil production well is further calculated, thereby realizing automatic recognition of the injection-production correspondence relationship in the target block unit, solving the problems of high labor consumption and low work efficiency in the process of oil field development, and effectively improving the accuracy of injection-production correspondence relationship recognition and the efficiency of oil field development. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A flow chart of a method for identifying an injection-production correspondence relationship provided by an embodiment;

[0024] Figure 2 A schematic diagram of the structure of an embodiment of a computer device provided by the present invention;

[0025] Figure 3 A schematic diagram of the structure of an embodiment of a computer-readable storage medium provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0027] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0028] At present, oil fields have built digital oil and water well production data management systems, which generally include static, dynamic and monitoring data of oil fields, blocks and single wells. Based on these digital data, the present invention uses computer technology to establish a timely automatic identification method for injection-production correspondence. In the later stage, by developing corresponding software that connects with the oil and water well production data management system, the computer automatic identification of the injection-production correspondence is realized, laying the foundation for digital well group dynamic analysis, measure formulation, program preparation and other work.

[0029] In one embodiment, please refer to Figure 1 As shown, a method 100 for identifying an injection-production correspondence relationship is provided, and the method 100 comprises the following steps:

[0030] a. Select the target block unit and obtain the effective water injection wells and effective oil production wells in the target block unit;

[0031] b. Selecting a target effective water injection well from the effective water injection wells;

[0032] c. Determine the target effective oil production well based on the first production layer of the target effective water injection well and the second production layer of the effective oil production well;

[0033] d. Collect the tracer monitoring data of the target effective water injection well, and determine the preliminary selected oil production well according to the tracer monitoring data and the target effective oil production well;

[0034] e. Calculate the correlation coefficient based on the target effective water injection well and the preliminary selected oil production well. If the correlation coefficient meets the preset relationship threshold, it is determined that there is an injection-production corresponding relationship between the target effective water injection well and the preliminary selected oil production well

[0035] Among them, the target block unit is the oilfield block for which the injection-production relationship needs to be identified, and the target effective water injection well is the water injection well for which the injection-production relationship needs to be identified.

[0036] The above method for identifying the injection-production corresponding relationship selects the target effective water injection well in the target block unit, determines the target effective oil production well related to the target effective water injection well, then determines the preliminary selected oil production well according to the data information collected from the target effective water injection well and the target effective oil production well, and further calculates the correlation coefficient used to determine whether there is a corresponding relationship between the target effective water injection well and the preliminary selected oil production well, realizing the automatic identification of the injection-production corresponding relationship in the target block unit. It solves the problems of high manual consumption and low work efficiency in the process of oilfield development, and effectively improves the accuracy of identifying the injection-production corresponding relationship and the efficiency of oilfield development.

[0037] In some embodiments, the effective water injection well is a water injection well with a production days in the past 12 months not equal to 0, not scrapped, or without re-injection after being converted to pumping, and the effective oil production well is an oil production well with a production days in the past 12 months not equal to 0, not scrapped, or without re-pumping after being converted to injection.

[0038] Query the data information of all water injection wells in the target block unit from the oil and water well production data management system, exclude the water injection wells with a production days in the past 12 months equal to 0, with the word "scrapped" noted in the data information, or with the word "without re-injection after being converted to pumping" noted in the data information, and take the remaining water injection wells as the effective water injection wells of the target block unit. Similarly, query the data information of all oil production wells in the target block unit from the oil and water well production data management system, exclude the oil production wells with a production days in the past 12 months equal to 0, with the word "scrapped" noted in the data information, or with the word "without re-pumping after being converted to injection" noted in the data information, and take the remaining oil production wells as the effective oil production wells of the target block unit.

[0039] Specifically, take the block unit with the block unit code "WGT_W104X2_ZIII" as an example of the target block unit. As shown in Table 1, it is the statistics of the water injection wells in this target block unit. Query from the oil and water well production data management system that there are currently 14 water injection wells in this target block unit.

[0040] Table 1 Statistics of injection wells in three units of WGT_W104X2_Z

[0041]

[0042] Among the 14 injection wells, excluding those with production days of "0" and the word "scrapped" in the remark information, there are 8 injection wells remaining, as shown in Table 2.

[0043] Table 2 Statistics of injection wells in unit WGT_W104X2_Z (excluding abandoned wells)

[0044]

[0045]

[0046] The production data of the two water injection wells "G28-47" and "G28-48K" with a production number of "0" in Table 2 were queried from the oil and water well production data management system, and the production data for the past 12 months showed that the production number of days was 0, as shown in Tables 3 and 4.

[0047] Table 3 Production data of injection well G28-47 in the last 12 months

[0048] hashtag Nearly 12 months Horizon Production days Daily injection volume Remark Block unit code G28-47 1 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 2 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 3 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 4 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 5 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 6 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 7 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 8 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 9 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 10 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 11 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3 G28-47 12 Z3 0 0 Stop betting due to leakage WGT_W104X2_Z3

[0049] Table 4 Production data of injection well G28-48K in the last 12 months

[0050] hashtag Nearly 12 months Horizon Production days Daily injection volume Remark Block unit code G28-48K 1 Z23 0 0 Waiting for overhaul and salvage WGT_W104X2_Z3 G28-48K 2 Z23 0 0 Waiting for overhaul and salvage WGT_W104X2_Z3 G28-48K 3 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 4 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 5 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 6 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 7 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 8 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 9 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 10 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 11 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3 G28-48K 12 Z23 0 0 Sand flushing encounters resistance and the pipe string is stuck and injection is stopped WGT_W104X2_Z3

[0051] Excluding the injection wells with the well number "G28-47" and the injection well with the well number "G28-48K", there are 6 injection wells left, that is, these 6 injection wells are effective injection wells, as shown in Table 5.

[0052] Table 5 Statistics of water injection wells in the three units of WGT_W104X2_Z (excluding abandoned wells and wells that have stopped production in the past 12 months)

[0053]

[0054]

[0055] From the oil and water well production data management system, it is found that there are currently 13 oil producing wells in the target block unit, as shown in Table 6.

[0056] Table 6 Statistics of oil wells in unit WGT_W104X2_Z

[0057]

[0058] Excluding the oil wells with production days of “0” and the word “scrapped” in the remark information from the 13 oil wells, there are 11 oil wells left, as shown in Table 7.

[0059] Table 7 Statistics of oil production wells in unit 3 of WGT_W104X2_Z (excluding abandoned wells)

[0060]

[0061]

[0062] The production data of the oil well "W104X1" with a production day of "0" in Table 7 for the past 12 months is queried from the oil and water well production data management system, and it is shown that the production days are all 0, as shown in Table 8.

[0063] Table 8 Production data of oil well W104X1 in the last 12 months

[0064]

[0065]

[0066] Excluding the oil well with the well number "W104X1", there are 10 oil wells left, that is, these 10 oil wells are effective oil wells, as shown in Table 9.

[0067] Table 9 Statistics of oil production wells in Unit 3 of WGT_W104X2_Z (excluding abandoned wells and wells that have stopped production in the past 12 months)

[0068]

[0069] In some embodiments, a target effective water injection well is selected from the acquired effective water injection wells. For example, the effective water injection well with the well number "G27-52-1" in Table 5 can be used as the target effective water injection well. With the target effective water injection well as the center, the correspondence between the target effective water injection well and the 10 effective oil production wells in Table 9 is analyzed.

[0070] In some embodiments, the first production horizon in step c is the current production horizon of the target effective water injection well, and the second production horizon is the current production horizon of the effective oil production well. Step c includes:

[0071] If the first production layer and the second production layer have the same layer, the corresponding effective oil production well will be used as the target effective oil production well.

[0072] First, the current production layers of the target effective water injection well and the effective oil production well are analyzed. When the current production layers of the target effective water injection well and the effective oil production well have the same layer, the corresponding effective oil production well will be used as the target effective oil production well.

[0073] Specifically, when the effective water injection well with the well number "G27-52-1" is used as the target effective water injection well, it can be found from Table 5 that the current production layer of the target effective water injection well is "Z3", as shown in Table 10.

[0074] Table 10 Production of injection well G27-52-1

[0075]

[0076] From Table 9, it is found that the current production layer of the effective oil production well with the well number "G28-56K" is "Z4", which does not include "Z3". Therefore, the target effective water injection well and the effective oil production well "G28-56K" do not have the same layer, and there is no corresponding relationship, so this effective oil production well is excluded. The layers of the other 9 effective oil production wells all contain "Z3", that is, these 9 effective oil production wells are the target effective oil production wells, as shown in Table 11.

[0077] Table 11 Production of oil wells in the third layer of unit Z of WGT_W104X2_Z (excluding abandoned wells and wells that have stopped production in the past 12 months)

[0078]

[0079] In some embodiments, step d comprises:

[0080] If there is tracer monitoring data for the target effective water injection well, obtain the latest tracer injection date, sampling well number, and the earliest conversion date of the target effective oil production well, and determine the primary oil production well based on the information obtained;

[0081] If there is no tracer monitoring data for the target effective water injection well, the target effective oil production well shall be used as the primary oil production well.

[0082] In some embodiments, the most recent tracer injection date, the sampling well number, and the earliest conversion date of the target effective oil production well are collected, and a preliminary oil production well is determined based on the acquired information, including: taking the target effective oil production well with the same well number as the sampling well as the preliminary oil production well; or taking the target effective oil production well with the earliest conversion date after the injection date as the preliminary oil production well.

[0083] Check whether there is tracer monitoring data for the target effective water injection well from the oil and water well production data management system. If yes, extract the latest tracer injection date and sampling well number information, and query the earliest production or conversion date of the target effective oil production well monthly report, that is, the first year and month date of the production or conversion of the target effective oil production well. Select the target effective oil production wells whose numbers overlap with the sampling well numbers as the preliminary oil production wells, or select the target effective oil production wells that were put into production after the latest tracer injection date as the preliminary oil production wells, and enter the next step of dynamic analysis. If not, directly select all target effective oil production wells as the preliminary oil production wells, and enter the next step of dynamic analysis.

[0084] Specifically, when the effective water injection well with the well number "G27-52-1" is used as the target effective water injection well, the single well information list of the target effective water injection well is queried from the oil and water well production data management system, and the inter-well tracer monitoring data is displayed, as shown in Table 12. Among them, the most recent tracer injection date is date 1, and there are a total of 6 sampling wells.

[0085] Table 12G27-52-1 Well Tracer Monitoring Information

[0086]

[0087] There are 5 target effective oil production wells whose well numbers in Table 11 overlap with the sampling well numbers in Table 12, namely "G28-50", "G27-50", "G27-50-1", "G28-49" and "G28-45". At the same time, there are no target effective oil production wells in Table 11 that were put into production after Date 1. Therefore, these 5 target effective oil production wells are taken as preliminary oil production wells and enter the next step of dynamic analysis. As shown in Table 13, these are the preliminary oil production wells corresponding to the target effective water injection wells.

[0088] Table 13 Corresponding oil production wells of water injection well G27-52-1 (stratum, after monitoring and screening)

[0089]

[0090] In some embodiments, step e comprises:

[0091] Obtain the cumulative water injection volume of the target effective water injection well in the first cycle, as well as the daily liquid production, dynamic liquid level and water content data of the primary oil production well in the first cycle;

[0092] Calculate the correlation coefficients between the cumulative water injection volume and the daily fluid production, dynamic liquid level and water content data respectively;

[0093] When any correlation coefficient meets the preset relationship threshold, the initial dynamic correspondence between the target effective water injection well and the primary selected oil production well is determined.

[0094] The first period is the first month before the effective injection well is converted into water, and the last 12 months are the starting period, i.e. the initial period of the injection well conversion. The correlation coefficient is the Spearman rank correlation coefficient. The correlation coefficient meets the preset relationship threshold when the correlation coefficient is greater than or equal to the preset relationship threshold.

[0095] Analyze whether there is a dynamic correspondence between the target effective water injection well and each preliminary selected oil production well in the initial stage of water injection. Obtain the cumulative water injection volume in the 12 months starting from the month before the target effective water injection well was put into operation in the oil and water well production data management system, as well as the daily liquid production, dynamic liquid level and water content data of the preliminary selected oil production well. Calculate the Spearman correlation coefficient between daily liquid production and cumulative water injection volume, the Spearman correlation coefficient between dynamic liquid level and cumulative water injection volume, and the Spearman correlation coefficient between water content data and cumulative water injection volume. If any of the three Spearman correlation coefficients is greater than or equal to the preset relationship threshold, it is determined that the target effective water injection well and the preliminary selected oil production well are dynamically corresponding in the initial stage of injection, otherwise they are not corresponding. Among them, the preset relationship threshold is set by the technician according to the actual application scenario. For example, the preset relationship threshold can be set to 0.456, but is not limited to 0.456.

[0096] Specifically, the effective water injection well with the well number "G27-52-1" is used as the target effective water injection well, and the cumulative injection volume (i.e., cumulative water injection volume) of each month during the 12 months starting from the month before the target effective water injection well was put into operation is queried from the oil and water well production data management system, and the daily liquid production, dynamic liquid level and water content data of the preliminary oil production wells in Table 13 are queried to calculate the Spearman correlation coefficient. Taking the preliminary oil production well with the well number "G27-50" as an example, the cumulative water injection volume of the target effective water injection well in the first period, and the daily liquid production, dynamic liquid level and water content data of the preliminary oil production well in the first period are shown in Table 14.

[0097] Table 14 Production data and correlation coefficients of oil and water wells in the initial stage of injection

[0098]

[0099]

[0100] If the preset relationship threshold is set to 0.456, it can be seen from Table 14 that in the first period, among the three Spearman correlation coefficients of the daily liquid production, dynamic liquid level, water content data of the preliminary oil production well and the cumulative water injection volume of the target effective water injection well, two Spearman correlation coefficients are greater than 0.456, which means that it can be determined that the target effective water injection well and the preliminary oil production well dynamically correspond to each other in the initial stage of injection.

[0101] In some embodiments, step e further comprises:

[0102] Obtain the cumulative water injection volume of the target effective water injection well in the second cycle, as well as the daily liquid production and dynamic liquid level of the primary selected oil production well in the second cycle;

[0103] Calculate the correlation coefficients between the cumulative water injection volume and the daily fluid production and dynamic fluid level respectively;

[0104] When any correlation coefficient meets the preset relationship threshold, the recent dynamic correspondence between the target effective water injection well and the primary selected oil production well is determined.

[0105] Among them, the second period is the 12 months before the current moment, that is, the recent period of water injection well investment and conversion.

[0106] Analyze whether there is a dynamic correspondence between the target effective water injection well and each preliminary oil production well in the recent period of water injection well investment and transfer. Obtain the cumulative water injection volume of the target effective water injection well in the recent 12 months, as well as the daily liquid production and dynamic liquid level of the preliminary oil production well in the recent 12 months in the oil and water well production data management system. Calculate the Spearman correlation coefficient between daily liquid production and cumulative water injection volume and the Spearman correlation coefficient between dynamic liquid level and cumulative water injection volume respectively. If any of the two Spearman correlation coefficients is greater than or equal to the preset relationship threshold, it is determined that the target effective water injection well and the preliminary oil production well have a recent dynamic correspondence, otherwise they do not correspond.

[0107] Specifically, the target effective water injection well with the well number "G27-52-1" and the pre-selected oil production well with the well number "G27-50" are still taken as examples. The cumulative water injection volume of the target effective water injection well in the past 12 months and the daily liquid production and dynamic liquid level of the pre-selected oil production well in the past 12 months are queried from the oil and water well production data management system, and the Spearman correlation coefficient is calculated, as shown in Table 15.

[0108] Table 15 Recent oil and water well production data and correlation coefficients

[0109]

[0110] If the preset relationship threshold is set to 0.456, it can be seen from Table 15 that in the second period, among the two Spearman correlation coefficients of the daily liquid production and dynamic liquid level of the preliminary oil production well and the cumulative water injection volume of the target effective water injection well, one Spearman correlation coefficient is greater than 0.456, then it is determined that the target effective water injection well and the preliminary oil production well have a recent dynamic correspondence in terms of investment and injection.

[0111] In some embodiments, if the initial dynamics of injection and / or the recent dynamics of injection and / or injection correspond, it is determined that there is an injection-production correspondence relationship between the target water injection well and the primary oil production well.

[0112] When the target effective injection well and the initially selected production well are dynamically corresponding in the initial stage of injection conversion, or the target effective injection well and the initially selected production well are dynamically corresponding in the near future of injection conversion, or the target effective injection well and the initially selected production well are dynamically corresponding in both the initial stage and the near future of injection conversion, include this initially selected production well into the injection-production corresponding relationship centered on the target effective injection well.

[0113] Similarly, analyze the dynamic corresponding relationship between the target effective injection well with well number "G27-52-1" and the other 4 initially selected production wells in Table 13 in the initial stage and the near future of injection conversion. The analysis results of the dynamic corresponding relationship between the target effective injection well "G27-52-1" and the 5 initially selected production wells in Table 13 are shown in Table 16.

[0114] Table 16 Analysis Results of Injection-Production Dynamic Corresponding Relationship of G27-52-1

[0115]

[0116] It can be known that the production wells corresponding to the injection-production centered on the target effective injection well "G27-52-1", that is, the injection-production corresponding relationship is injection well "G27-52-1", production wells "G27-50", "G27-50-1", "G28-49" and "G28-50", as shown in Table 17.

[0117] Table 17 Injection-Production Corresponding Relationship of G27-52-1 and Injection-Production Well Group Identification Results

[0118] Injection Wells Corresponding oil well G27-52-1 G27-50 G27-52-1 G27-50-1 G27-52-1 G28-49 G27-52-1 G28-50

[0119] The above injection-production corresponding relationship identification method, by selecting the target effective injection well in the target block unit, determining the target effective production wells related to the target effective injection well, and then according to the collected data information, determining the initially selected production wells, and further calculating the correlation coefficient used to determine whether there is a corresponding relationship between the target effective injection well and the initially selected production wells. It combines static, monitoring and dynamic analysis, and has high accuracy.

[0120] In some embodiments, in step f, repeat steps b to e to determine all injection-production corresponding relationships of the target block unit. That is, repeat the execution according to steps b to e, analyze the injection-production corresponding relationships centered on other effective injection wells in the target block unit, and complete the identification of the injection-production corresponding relationships of this target block unit.

[0121] Specifically, still taking the block unit with block unit code "WGT_W104X2_Z three" as the target block unit as an example, repeat steps b to e to identify all injection-production corresponding relationships of this target block unit, as shown in Table 18.

[0122] Table 18 Injection-production correspondence between the three blocks of WGT_W104X2_Z, that is, the identification results of the injection-production well group

[0123]

[0124]

[0125] In some embodiments, in step g, steps a to f are repeated to determine all injection-production correspondences of all block units, that is, to achieve automatic identification and establishment of injection-production correspondences of the entire oil field.

[0126] The above-mentioned method for identifying the injection-production correspondence can be applied to the development of corresponding software for docking with the oil and water well production data management system, so as to realize the computer automatic identification and establishment of the injection-production correspondence of a certain block unit or the entire oil field, and after the automatic identification and establishment of the injection-production correspondence, the injection-production correspondence can be updated at any time according to the dynamic changes of the water injection well or the oil production well, with good timeliness, laying the foundation for the dynamic analysis of the digital well group, formulation of measures, and preparation of plans.

[0127] Based on the same inventive concept, the second aspect of the embodiment of the present invention provides a device for identifying the injection-production correspondence relationship. The device for identifying the injection-production correspondence relationship implements the above-mentioned method for identifying the injection-production correspondence relationship.

[0128] Based on the same inventive concept, according to another aspect of the present invention, Figure 2 As shown, an embodiment of the present invention further provides a computer device 30, which includes a processor 310 and a memory 320. The memory 320 stores a computer program 321 that can be run on the processor. When the processor 310 executes the program, the steps of the above method are performed.

[0129] Based on the same inventive concept, according to another aspect of the present invention, Figure 3 As shown, an embodiment of the present invention further provides a computer-readable storage medium 40, which stores a computer program 410 for executing the above method when executed by a processor.

[0130] Finally, it should be noted that a person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium of the program can be a disk, an optical disk, a read-only storage memory (ROM) or a random access memory (RAM), etc. The above-mentioned computer program embodiments can achieve the same or similar effects as the corresponding above-mentioned arbitrary method embodiments.

[0131] It will also be appreciated by those skilled in the art that various exemplary logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, a general description has been given to the functions of various schematic components, blocks, modules, circuits and steps. Whether this function is implemented as software or hardware depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the function in various ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the disclosed scope of the embodiments of the present invention.

[0132] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope of the embodiments disclosed in the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0133] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0134] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A method for identifying injection-production correspondence, characterized in that: The method comprises the following steps: a. Select a target block unit and obtain effective water injection wells and effective oil production wells in the target block unit; b. selecting a target effective water injection well in the effective water injection well; c. determining a target effective oil production well based on the first production layer of the target effective water injection well and the second production layer of the effective oil production well; d. collecting the tracer monitoring data of the target effective water injection well, and determining the preliminary oil production well according to the tracer monitoring data and the target effective oil production well; e. Based on the target effective water injection well and the preliminarily selected oil production well, a correlation coefficient is calculated. If the correlation coefficient meets a preset relationship threshold, it is determined that there is an injection-production correspondence relationship between the target effective water injection well and the preliminarily selected oil production well.

2. The method according to claim 1, characterized in that The effective water injection well in step a is a water injection well whose production days in the past 12 months are not 0, which has not been scrapped or has not been re-injected after re-pumping. The effective oil production well is an oil production well whose production days in the past 12 months are not 0, which has not been scrapped or has not been re-injected after re-injection.

3. The method according to claim 1, characterized in that The first production horizon in step c is the current production horizon of the target effective water injection well, and the second production horizon is the current production horizon of the effective oil production well. Step c includes: If the first production layer and the second production layer have the same layer, the corresponding effective oil production well will be used as the target effective oil production well.

4. The method according to claim 1, characterized in that: Step d includes: If the target effective water injection well has tracer monitoring data, obtain the latest injection date of the tracer, the sampling well number, and the earliest conversion date of the target effective oil production well, and determine the primary oil production well based on the obtained information; If there is no tracer monitoring data for the target effective water injection well, the target effective oil production well will be used as a primary oil production well.

5. The method according to claim 4, characterized in that The step of obtaining the latest injection date of the tracer, the sampling well number, and the earliest conversion date of the target effective oil production well, and determining the preliminary oil production well based on the obtained information, includes: The target effective oil production well with the same well number as the sampling well is selected as a primary oil production well; or The target effective oil production well whose earliest conversion date is after the injection date is used as the primary oil production well.

6. The method according to claim 1, characterized in that Step e includes: Obtaining the cumulative water injection volume of the target effective water injection well in the first period, and the daily liquid production, dynamic liquid level and water content data of the primary selected oil production well in the first period; respectively calculating the correlation coefficients between the cumulative water injection volume and the daily liquid production, the dynamic liquid level and the water content data; When any correlation coefficient meets the preset relationship threshold, the initial dynamic correspondence between the target effective water injection well and the primary selected oil production well is determined.

7. The method according to claim 6, characterized in that The method further comprises: Obtaining the cumulative water injection volume of the target effective water injection well in the second period, and the daily liquid production and dynamic liquid level of the primary oil production well in the second period; respectively calculating the correlation coefficients between the cumulative water injection volume, the daily fluid production and the dynamic fluid level; When any correlation coefficient meets the preset relationship threshold, the recent dynamic correspondence between the target effective water injection well and the primary selected oil production well is determined.

8. The method according to claim 7, characterized in that The method comprises: If the initial dynamics of injection-transfer and / or the recent dynamics of injection-transfer and injection correspond to each other, it is determined that there is an injection-production correspondence relationship between the target water injection well and the primary oil production well.

9. The method according to claim 6, characterized in that The first cycle is the 12 months after the target effective water injection well is started from one month before the injection is started.

10. The method according to claim 7, characterized in that The second period is the 12 months before the current moment.

11. The method according to claim 1, characterized in that: Further comprising the steps of: f. Repeat steps b to e to determine all injection-production correspondences of the target block unit.

12. The method according to claim 11, characterized in that Further comprising the steps of: g. Repeat steps a to f to determine all injection-production correspondences of all block units.

13. A device for identifying the corresponding relationship between injection and production, characterized in that: The device executes the method according to any one of claims 1 to 12.

14. A computer device comprising: at least one processor; as well as A memory storing a computer program executable on the processor, wherein the processor executes the steps of the method according to any one of claims 1 to 12 when executing the program.

15. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 12 are performed.

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