Method and device for determining ultimate recoverable oil volume of horizontal well of shale oil
By conducting production dynamic analysis and numerical simulation of shale oil horizontal wells, and combining the positive correlation between production and the length of the oil-bearing layer encountered, the recoverable oil volume per unit horizontal section is calculated. This solves the problem of predicting the final recoverable oil volume of shale oil horizontal wells in existing technologies, achieving efficient and accurate prediction results, and guiding well location deployment and block development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CNPC GREATWALL DRILLING COMPANY
- Filing Date
- 2025-01-14
- Publication Date
- 2026-07-14
AI Technical Summary
Existing technologies are insufficient for simply, efficiently, and accurately predicting the final recoverable oil volume of shale oil horizontal wells. Physical simulation experiments are affected by reservoir heterogeneity and are costly, while other methods have poor adaptability.
By conducting production dynamic analysis and numerical simulation of horizontal wells, the predicted and simulated final recoverable oil volume of a single well is determined. Combining the positive correlation between production and the length of the oil-bearing layer encountered, the recoverable oil volume per unit horizontal section is calculated and used to predict the final recoverable oil volume of new wells.
It improves the accuracy of the analysis of the final recoverable oil volume of shale oil horizontal wells, reduces ineffective drilling and development costs, provides accurate well location deployment decision-making basis, and enhances the efficiency of oilfield development.
Smart Images
Figure CN122390118A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the fields of petroleum geological exploration and reservoir engineering, specifically to a method and apparatus for determining the final recoverable oil volume of a shale oil horizontal well. Background Technology
[0002] With the transformation of the global energy structure and the rapid development of clean energy, shale oil, as an important non-traditional energy resource, is gradually attracting widespread attention from various countries. Shale oil resources in shale reservoirs mainly exist in adsorbed and dissolved states. Shale oil is primarily developed through horizontal wells and fracturing technologies. In terms of geological exploration, high-precision seismic exploration and geological modeling techniques can accurately predict the distribution and scale of shale oil reservoirs. In terms of drilling technology, the application of horizontal wells and multi-branch wells has significantly improved the production and recovery rate of shale oil wells. Meanwhile, fracturing technology is constantly innovating, such as using multi-stage fracturing and volumetric fracturing, which effectively improves the flow capacity of shale oil reservoirs and increases reservoir recovery. However, due to the high input costs of shale oil production, the final recoverable oil yield per well becomes the decisive factor for the profitable development of shale oil reservoirs.
[0003] Currently, the characterization of the final recoverable oil volume of a single well in a shale oil reservoir mainly relies on physical simulation experiments. However, physical simulation experiments are affected by reservoir heterogeneity, resulting in research findings that lack universality. Furthermore, these experiments suffer from long analysis cycles and high costs. Other methods either require complex data input or have poor adaptability.
[0004] Therefore, how to predict the final recoverable oil volume of shale oil horizontal wells simply, efficiently, and accurately is an important problem that the industry needs to solve. Summary of the Invention
[0005] This invention provides a method and apparatus for determining the final recoverable oil volume of shale oil horizontal wells, thereby improving the accuracy of the analysis of the final recoverable oil volume of shale oil horizontal wells and providing a more accurate decision-making basis for oilfield development.
[0006] Therefore, the present invention provides the following technical solution:
[0007] This invention provides a method for determining the final recoverable oil volume of a shale oil horizontal well, the method comprising:
[0008] Analyze the production dynamics of horizontal wells to determine the predicted final recoverable oil volume for a single well;
[0009] The final recoverable oil volume of a single well was determined through numerical simulation.
[0010] Based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well, the recoverable oil volume per unit horizontal section of the single well is determined.
[0011] The final recoverable oil volume of the new horizontal well is predicted based on the recoverable oil volume per unit horizontal section of the single well.
[0012] Optionally, the step of performing production dynamic analysis on horizontal wells to determine the predicted final recoverable oil volume of a single well includes:
[0013] Acquire horizontal well production data, and generate a curve showing the relationship between oil production and the horizontal segment of the oil-bearing reservoir encountered based on the production data;
[0014] Based on the aforementioned relationship curve, it was determined that oil production is positively correlated with the length of the horizontal segment of the oil-bearing reservoir encountered during drilling.
[0015] Based on the positive correlation, the production of horizontal wells is predicted using a decreasing method to determine the final recoverable oil volume of a single well.
[0016] Optionally, the production data includes: oil production and the length of the horizontal section of the oil-bearing layer encountered during drilling.
[0017] Optionally, determining the final recoverable oil volume of a single well through numerical simulation includes:
[0018] A single-well daily production prediction model is established in advance through numerical simulation.
[0019] Using the single-well daily production prediction model and the current daily production of the horizontal well, the production of the horizontal well is predicted to obtain the simulated final recoverable oil volume of the single well.
[0020] Optionally, determining the recoverable oil volume per unit horizontal section of a single well based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well includes:
[0021] Based on the predicted final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is calculated, and the recoverable oil volume per unit length is used as the first calculated value.
[0022] Based on the simulated final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is determined, and the recoverable oil volume per unit length is used as the second calculated value.
[0023] The recoverable oil volume per unit horizontal section of a single well is determined based on the first calculated value and the second calculated value.
[0024] Optionally, determining the recoverable oil volume per unit horizontal section of a single well based on the first calculated value and the second calculated value includes: performing a weighted calculation on the first calculated value and the second calculated value to obtain the recoverable oil volume per unit horizontal section of a single well.
[0025] Optionally, predicting the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of the single well includes:
[0026] Determine the length of the horizontal section of the oil-bearing layer encountered in the new horizontal well;
[0027] The final recoverable oil volume of the new horizontal well is calculated based on the recoverable oil volume per unit horizontal section of the single well and the length of the horizontal section of the oil-bearing layer encountered by the new horizontal well.
[0028] The present invention also provides an apparatus for determining the final recoverable oil volume of a shale oil horizontal well, the apparatus comprising:
[0029] The dynamic analysis module is used to perform production dynamic analysis on horizontal wells and determine the predicted final recoverable oil volume of a single well.
[0030] The numerical simulation module is used to determine the final recoverable oil volume of a single well through numerical simulation.
[0031] The calculation module is used to determine the recoverable oil volume per unit horizontal section of a single well based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well.
[0032] The prediction module predicts the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of the single well.
[0033] Optionally, the dynamic analysis module includes:
[0034] The production data acquisition unit is used to acquire horizontal well production data and generate a curve showing the relationship between oil production and the horizontal segment of the oil-bearing layer encountered based on the production data.
[0035] The relationship determination unit is used to determine, based on the relationship curve, that there is a positive correlation between oil production and the length of the horizontal segment of the oil-bearing reservoir encountered during drilling;
[0036] The first prediction unit is used to predict the production of horizontal wells using a decreasing method based on the positive correlation, and to determine the final recoverable oil volume of a single well.
[0037] Optionally, the numerical simulation module includes:
[0038] The module establishment unit is used to pre-establish a single-well daily production prediction model through numerical simulation.
[0039] The second prediction unit is used to predict the production of the horizontal well using the single-well daily production prediction model and the current daily production of the horizontal well, so as to obtain the simulated final recoverable oil volume of the single well.
[0040] The present invention also provides a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor to perform the steps of the method for determining the final recoverable oil volume of a shale oil horizontal well.
[0041] The present invention provides a method and apparatus for determining the final recoverable oil volume of shale oil horizontal wells. By performing production dynamic analysis on the horizontal well, the predicted final recoverable oil volume of a single well is determined. At the same time, the simulated final recoverable oil volume of a single well is determined by numerical simulation. Then, the final recoverable oil volume of a single well obtained by the two different methods is combined to determine the recoverable oil volume per unit horizontal section of the single well. The recoverable oil volume per unit horizontal section of the single well is used to predict the final recoverable oil volume of a new well and to carry out horizontal well productivity evaluation.
[0042] This invention, based on the positive correlation between production and horizontal well length, allows for a simple and efficient determination of the unit production of a horizontal well, which can then be used to calculate the production of new wells. Furthermore, by integrating dynamic analysis and numerical simulation results, the prediction of the final recoverable oil volume of new wells is made more accurate, effectively improving the analytical precision of the final recoverable oil volume of shale oil horizontal wells. This provides a more precise decision-making basis for guiding well location deployment and achieving block-wide efficient development. By accurately determining the recoverable reserves for different horizontal well lengths, ineffective drilling and development costs can be reduced, block reserves can be fully utilized, and the economic and social benefits of oilfield development can be improved. Attached Figure Description
[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.
[0044] Figure 1 This is a flowchart of a method for determining the final recoverable oil volume of a shale oil horizontal well, provided in an embodiment of the present invention.
[0045] Figure 2 This is a schematic diagram of a device for determining the final recoverable oil volume of a shale oil horizontal well, provided in an embodiment of the present invention. Detailed Implementation
[0046] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0047] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0048] To accurately predict the final recoverable oil volume of shale oil horizontal wells, this invention provides a method and apparatus for determining the final recoverable oil volume of shale oil horizontal wells. The final recoverable oil volume of a single well is determined by integrating dynamic analysis and numerical simulation results, the recoverable oil volume per unit horizontal section of a single well is determined, and the final recoverable oil volume of a new well is predicted using the recoverable oil volume per unit horizontal section of a single well, thereby conducting horizontal well productivity evaluation.
[0049] like Figure 1 The diagram shown is a flowchart of a method for determining the final recoverable oil volume of a shale oil horizontal well, provided by an embodiment of the present invention.
[0050] In step 101, a production dynamic analysis is performed on the horizontal well to determine the predicted final recoverable oil volume for a single well.
[0051] Specifically, the predicted final recoverable oil volume for a single well based on production dynamics analysis can be determined as follows:
[0052] First, obtain horizontal well production data, including oil production and the length of the horizontal section of the oil-bearing layer encountered. Then, generate a curve showing the relationship between oil production and the horizontal section of the oil-bearing layer encountered based on the production data.
[0053] Secondly, based on the aforementioned relationship curve, it can be determined that there is a positive correlation between oil production and the length of the horizontal section of the oil-bearing layer encountered during drilling; that is, the longer the horizontal section, the higher the production.
[0054] Therefore, based on the aforementioned positive correlation, the production of horizontal wells can be predicted using a decreasing method to determine the predicted final recoverable oil volume of a single well. Specifically, the current year's production of an old well can be compared with the previous year's production, and the difference between the two can be divided by the current year's production to obtain the current year's decreasing rate. Based on the production of an old well over many years, the decreasing rate over many years can be determined. Using the determined decreasing rate, the production for the next year or many years (e.g., 20 years) can be predicted, thus obtaining the final recoverable oil volume of the well.
[0055] It should be noted that the production decline pattern of a single well may differ in different regions. Therefore, in specific implementation, different decline pattern models can be determined for different reservoir conditions to improve the accuracy of the prediction results.
[0056] In step 102, the final recoverable oil volume of a single well is determined by numerical simulation.
[0057] A single-well daily production prediction model can be established in advance through numerical simulation; using the single-well daily production prediction model and the current daily production of the horizontal well, the production of the horizontal well can be predicted to obtain the simulated final recoverable oil volume of the single well.
[0058] It should be noted that the single-well daily production prediction model is a numerical simulation model, and the numerical simulation method is mainly based on geological understanding and production dynamic analysis results. Specifically, based on the regional geological understanding, a geological model reflecting the actual situation of the oilfield can be established by combining parameters such as single-well porosity, permeability, and effective thickness. Based on this geological model, and using the production data of old wells and perforated well sections, a single-well daily production prediction model can be established.
[0059] Compared to regional production prediction models based on numerical simulation, single-well daily production prediction models are simpler to implement and more efficient.
[0060] In step 103, the recoverable oil volume per unit horizontal section of a single well is determined based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well.
[0061] The specific process for determining the recoverable oil yield per unit horizontal section of a single well is as follows:
[0062] First, based on the predicted final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is calculated, and the recoverable oil volume per unit length is used as the first calculated value.
[0063] Meanwhile, based on the simulated final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is determined, and the recoverable oil volume per unit length is used as the second calculated value.
[0064] Then, the recoverable oil volume per unit horizontal section of a single well is determined based on the first calculated value and the second calculated value.
[0065] It should be noted that the unit length can be a set length such as 1 meter or 2 meters, and this embodiment of the invention does not limit it.
[0066] After obtaining the first and second calculated values, a weighted calculation can be performed on the first and second calculated values (for example, taking the average of the two) to obtain the recoverable oil volume per unit horizontal section of a single well.
[0067] By incorporating the recoverable oil production per unit horizontal section determined by two different methods, the final determined recoverable oil production per unit horizontal section of a single well can be more accurate.
[0068] In step 104, the final recoverable oil volume of the new horizontal well is predicted based on the recoverable oil volume per unit horizontal section of the single well.
[0069] Specifically, the length of the horizontal section of the oil-bearing layer encountered by the new horizontal well can be determined; based on the recoverable oil yield per unit horizontal section of the single well and the length of the horizontal section of the oil-bearing layer encountered by the new horizontal well, the two are multiplied to calculate the final recoverable oil yield of the new horizontal well.
[0070] It should be noted that steps 101 and 102 above do not have a temporal order. In some embodiments, they can be performed simultaneously, or either step can be performed first and then the other step can be performed.
[0071] It should also be noted that, in specific implementation, considering the different geological conditions in different regions, for areas with significant differences in geological conditions, the relevant data from production wells in that region can be used as a guideline. Figure 1 Steps 101 to 103 of the method shown re-determine the recoverable oil volume per unit horizontal section of a single well, and then use the determined recoverable oil volume per unit horizontal section of a single well to predict the final recoverable oil volume of new horizontal wells in this area.
[0072] Accordingly, embodiments of the present invention also provide an apparatus for determining the final recoverable oil volume of a shale oil horizontal well, such as... Figure 2 The diagram shown is a structural schematic of the device.
[0073] The device 200 for determining the final recoverable oil volume of a shale oil horizontal well includes the following modules:
[0074] The dynamic analysis module 201 is used to perform production dynamic analysis on horizontal wells and determine the predicted final recoverable oil volume of a single well.
[0075] Numerical simulation module 202 is used to determine the final recoverable oil volume of a single well through numerical simulation.
[0076] Calculation module 203 is used to determine the recoverable oil volume per unit horizontal section of a single well based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well.
[0077] The prediction module 204 predicts the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of the single well.
[0078] One non-limiting embodiment of the dynamic analysis module 201 may include the following units:
[0079] The production data acquisition unit is used to acquire horizontal well production data and generate a curve showing the relationship between oil production and the horizontal segment of the oil-bearing layer encountered based on the production data.
[0080] The relationship determination unit is used to determine, based on the relationship curve, that there is a positive correlation between oil production and the length of the horizontal segment of the oil-bearing reservoir encountered during drilling;
[0081] The first prediction unit is used to predict the production of horizontal wells using a decreasing method based on the positive correlation, and to determine the final recoverable oil volume of a single well.
[0082] One non-limiting embodiment of the numerical simulation module 202 may include the following units:
[0083] The module establishment unit is used to pre-establish a single-well daily production prediction model through numerical simulation.
[0084] The second prediction unit is used to predict the production of the horizontal well using the single-well daily production prediction model and the current daily production of the horizontal well, so as to obtain the simulated final recoverable oil volume of the single well.
[0085] Specifically, the calculation module 203 can calculate the recoverable oil per unit length based on the predicted final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, and use the recoverable oil per unit length as the first calculated value; it can determine the recoverable oil per unit length based on the simulated final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, and use the recoverable oil per unit length as the second calculated value; then, it can combine the first calculated value and the second calculated value to determine the recoverable oil per unit horizontal section of the single well.
[0086] Specifically, the prediction module 204 can calculate the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of a single well and the length of the horizontal section of the oil-bearing layer encountered by the new horizontal well.
[0087] The method and apparatus for determining the final recoverable oil volume of shale oil horizontal wells provided by this invention are based on the positive correlation between production and horizontal section. The production of the horizontal well is divided by the length of the horizontal section to obtain the production contribution per meter, which is used for the production calculation of new wells. The calculation efficiency is high and the final recoverable oil volume of new wells can be predicted quickly.
[0088] The method and apparatus for determining the final recoverable oil volume of shale oil horizontal wells provided in this invention can make the prediction results of the final recoverable oil volume of new wells more accurate, effectively improve the analysis accuracy of the final recoverable oil volume of shale oil horizontal wells, and provide a more accurate decision-making basis for oilfield development.
[0089] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.
[0090] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0091] In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus can be implemented in other ways.
[0092] The present invention also provides a storage medium, which is a computer-readable storage medium storing a computer program thereon, the computer program being executable when it runs. Figure 1 The method shown may include some or all of the steps. The storage medium may include read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. The storage medium may also include non-volatile memory or non-transitory memory, etc.
[0093] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means.
[0094] The embodiments of the present invention have been described in detail above. Specific implementation methods have been used to illustrate the present invention. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and systems of the present invention, and are merely some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention, and the content of this specification should not be construed as a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for determining the final recoverable oil volume of a shale oil horizontal well, characterized in that, The method includes: Analyze the production dynamics of horizontal wells to determine the predicted final recoverable oil volume for a single well; The final recoverable oil volume of a single well was determined through numerical simulation. Based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well, the recoverable oil volume per unit horizontal section of the single well is determined. The final recoverable oil volume of the new horizontal well is predicted based on the recoverable oil volume per unit horizontal section of the single well.
2. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 1, characterized in that, The production dynamic analysis of horizontal wells to determine the predicted final recoverable oil volume for a single well includes: Acquire horizontal well production data, and generate a curve showing the relationship between oil production and the horizontal segment of the oil-bearing reservoir encountered based on the production data; Based on the aforementioned relationship curve, it was determined that oil production is positively correlated with the length of the horizontal segment of the oil-bearing reservoir encountered during drilling. Based on the positive correlation, the production of horizontal wells is predicted using a decreasing method to determine the final recoverable oil volume of a single well.
3. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 2, characterized in that, The production data includes: oil production and the length of the horizontal section of the oil-bearing layer encountered during drilling.
4. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 1, characterized in that, The determination of the final recoverable oil volume of a single well through numerical simulation includes: A single-well daily production prediction model is established in advance through numerical simulation. Using the single-well daily production prediction model and the current daily production of the horizontal well, the production of the horizontal well is predicted to obtain the simulated final recoverable oil volume of the single well.
5. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 1, characterized in that, The determination of the recoverable oil volume per unit horizontal section of a single well based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well includes: Based on the predicted final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is calculated, and the recoverable oil volume per unit length is used as the first calculated value. Based on the simulated final recoverable oil volume of the single well and the length of the horizontal section of the oil-bearing layer encountered, the recoverable oil volume per unit length is determined, and the recoverable oil volume per unit length is used as the second calculated value. The recoverable oil volume per unit horizontal section of a single well is determined based on the first calculated value and the second calculated value.
6. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 5, characterized in that, The determination of the recoverable oil yield per unit horizontal section of a single well based on the first calculated value and the second calculated value includes: The first calculated value and the second calculated value are weighted and calculated to obtain the recoverable oil volume per unit horizontal section of a single well.
7. The method for determining the final recoverable oil volume of a shale oil horizontal well according to claim 1, characterized in that, The prediction of the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of the single well includes: Determine the length of the horizontal section of the oil-bearing layer encountered in the new horizontal well; The final recoverable oil volume of the new horizontal well is calculated based on the recoverable oil volume per unit horizontal section of the single well and the length of the horizontal section of the oil-bearing layer encountered by the new horizontal well.
8. An apparatus for determining the final recoverable oil volume of a shale oil horizontal well, characterized in that, The device includes: The dynamic analysis module is used to perform production dynamic analysis on horizontal wells and determine the predicted final recoverable oil volume of a single well. The numerical simulation module is used to determine the final recoverable oil volume of a single well through numerical simulation. The calculation module is used to determine the recoverable oil volume per unit horizontal section of a single well based on the predicted final recoverable oil volume of the single well and the simulated final recoverable oil volume of the single well. The prediction module predicts the final recoverable oil volume of the new horizontal well based on the recoverable oil volume per unit horizontal section of the single well.
9. The apparatus for determining the final recoverable oil volume of a shale oil horizontal well according to claim 8, characterized in that, The dynamic analysis module includes: The production data acquisition unit is used to acquire horizontal well production data and generate a curve showing the relationship between oil production and the horizontal segment of the oil-bearing layer encountered based on the production data. The relationship determination unit is used to determine, based on the relationship curve, that there is a positive correlation between oil production and the length of the horizontal segment of the oil-bearing reservoir encountered during drilling; The first prediction unit is used to predict the production of horizontal wells using a decreasing method based on the positive correlation, and to determine the final recoverable oil volume of a single well.
10. The apparatus for determining the final recoverable oil volume of a shale oil horizontal well according to claim 8, characterized in that, The numerical simulation module includes: The module establishment unit is used to pre-establish a single-well daily production prediction model through numerical simulation. The second prediction unit is used to predict the production of the horizontal well using the single-well daily production prediction model and the current daily production of the horizontal well, so as to obtain the simulated final recoverable oil volume of the single well.
11. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program, when run by a processor, performs the steps of the method for determining the final recoverable oil volume of a shale oil horizontal well as described in any one of claims 1 to 7.