Sedimentary facies modeling method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a sedimentary facies modeling method and device, electronic equipment and a storage medium. The method comprises the steps of determining a sedimentary facies plane distribution diagram and a seismic attribute plane distribution diagram corresponding to a carbonate reservoir for the carbonate reservoir to be subjected to sedimentary facies modeling; according to the sedimentary facies plane distribution diagram and the seismic attribute plane distribution diagram, a plane sedimentary partition boundary is obtained, and a plane sedimentary partition three-dimensional body is generated according to the plane sedimentary partition boundary; determining a seismic facies body corresponding to each planar sedimentary partition in the planar sedimentary partition three-dimensional body, and generating a longitudinal and transverse sedimentary partition three-dimensional body according to each determined seismic facies body; and carrying out statistics on spatial distribution rules of different sedimentary facies in each longitudinal and transverse sedimentary subarea in the longitudinal and transverse sedimentary subarea three-dimensional body, and establishing a sedimentary facies model according to the counted spatial distribution rules. According to the technical scheme provided by the embodiment of the invention, accurate characterization of the sedimentary facies of the carbonate reservoir can be realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of oilfield development, and in particular to a sedimentary phase modeling method, device, electronic device and storage medium. Background Art

[0002] Carbonate reservoirs play an important role in the distribution of oil and gas in the world. It has been found in practice that to study carbonate reservoirs, we must first clarify the spatial distribution of carbonate reservoir sedimentary phases.

[0003] However, the currently established carbonate reservoir sedimentary facies model (hereinafter referred to as the sedimentary facies model) cannot accurately characterize the carbonate reservoir sedimentary facies and needs to be improved. Summary of the invention

[0004] The embodiments of the present invention provide a sedimentary phase modeling method, device, electronic device and storage medium to achieve accurate characterization of carbonate reservoir sedimentary phases.

[0005] According to one aspect of the present invention, a sedimentary facies modeling method is provided, which may include:

[0006] For the carbonate reservoir to be modeled for sedimentary phases, a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir are determined;

[0007] According to the plane distribution map of sedimentary phase and the plane distribution map of seismic attributes, the plane sedimentary partition boundary is obtained, and the plane sedimentary partition three-dimensional volume is generated according to the plane sedimentary partition boundary;

[0008] Determine the seismic phase bodies corresponding to each plane sedimentary partition in the plane sedimentary partition three-dimensional body, and generate the vertical and horizontal sedimentary partition three-dimensional body according to each determined seismic phase body;

[0009] The spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition are statistically analyzed, and a sedimentary phase model is established based on the statistically analyzed spatial distribution laws.

[0010] According to another aspect of the present invention, a sedimentary phase modeling device is provided, which may include:

[0011] A plane distribution map determination module is used to determine a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir for which sedimentary phase modeling is to be performed;

[0012] A plane sedimentary partition three-dimensional volume generation module is used to obtain the plane sedimentary partition boundary according to the plane sedimentary phase distribution map and the plane seismic attribute distribution map, and generate the plane sedimentary partition three-dimensional volume according to the plane sedimentary partition boundary;

[0013] A vertical and horizontal sedimentation partition three-dimensional volume generation module is used to determine the seismic phase volume corresponding to each plane sedimentation partition in the plane sedimentation partition three-dimensional volume, and generate the vertical and horizontal sedimentation partition three-dimensional volume according to each determined seismic phase volume;

[0014] The sedimentary phase model building module is used to statistically analyze the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition, and to establish a sedimentary phase model based on the statistically analyzed spatial distribution laws.

[0015] According to another aspect of the present invention, there is provided an electronic device, which may include:

[0016] at least one processor; and

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

[0018] The memory stores a computer program that can be executed by at least one processor. The computer program is executed by at least one processor so that the sedimentary phase modeling method provided by any embodiment of the present invention is implemented when the at least one processor executes the computer program.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, on which computer instructions are stored, and the computer instructions are used to implement the deposition phase modeling method provided by any embodiment of the present invention when executed by a processor.

[0020] The technical solution of the embodiment of the present invention is aimed at the carbonate reservoir to be modeled for sedimentary phases, by determining the sedimentary phase plane distribution map and the seismic attribute plane distribution map corresponding to the carbonate reservoir; according to the sedimentary phase plane distribution map and the seismic attribute plane distribution map, the plane sedimentary partition boundary is obtained, and the plane sedimentary partition three-dimensional body is generated according to the plane sedimentary partition boundary; the seismic phase body corresponding to each plane sedimentary partition in the plane sedimentary partition three-dimensional body is determined, and the longitudinal and transverse sedimentary partition three-dimensional body is generated according to each determined seismic phase body; the spatial distribution law of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body is statistically analyzed, and the sedimentary phase model is established according to each statistical spatial distribution law. The above technical solution improves the accuracy of sedimentary phase characterization of carbonate reservoirs by using sedimentary partition control to establish a sedimentary phase model, that is, by reflecting the control effect of geological knowledge on heterogeneity and integrating it into the sedimentary phase model, compared with the implementation scheme of establishing a sedimentary phase model from a global perspective.

[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 is a flow chart of a sedimentary facies modeling method provided according to an embodiment of the present invention;

[0024] Figure 2 is a flow chart of another sedimentary facies modeling method provided according to an embodiment of the present invention;

[0025] Figure 3 is a flow chart of another sedimentary facies modeling method provided according to an embodiment of the present invention;

[0026] Figure 4 is a sedimentary phase plane distribution diagram illustrated in an optional example of another sedimentary phase modeling method provided by an embodiment of the present invention;

[0027] Figure 5 is a comparative schematic diagram of frequency distribution of different sedimentary phases for seismic porosity inversion volumes illustrated in an optional example of another sedimentary phase modeling method provided by an embodiment of the present invention;

[0028] Figure 6 is a seismic wave impedance plane distribution diagram illustrated in an optional example of another sedimentary facies modeling method provided in an embodiment of the present invention;

[0029] Figure 7 is a three-dimensional body of a plane deposition partition of an MA layer illustrated in an optional example of another deposition phase modeling method provided in an embodiment of the present invention;

[0030] Figure 8 is a three-dimensional body of longitudinal and transverse sedimentary partitions illustrated in an optional example of another sedimentary facies modeling method provided in an embodiment of the present invention;

[0031] Figure 9a is a longitudinal proportional relationship of various sedimentary facies in the northwest sedimentary area 1 illustrated in an optional example of another sedimentary facies modeling method provided by an embodiment of the present invention;

[0032] Figure 9b is the longitudinal proportional relationship of various sedimentary facies in the northwest sedimentary area 2 as shown in an optional example of another sedimentary facies modeling method provided by an embodiment of the present invention;

[0033] Fig.9cis a longitudinal proportional relationship of various sedimentary facies in the northwest sedimentary zone 3 illustrated in an optional example of another sedimentary facies modeling method provided in an embodiment of the present invention;

[0034] Fig.10 is a three-dimensional model of the MA layer sedimentary phase shown in an optional example of another sedimentary phase modeling method provided by an embodiment of the present invention;

[0035] Fig.11 is a structural block diagram of a sedimentary phase modeling device provided according to an embodiment of the present invention;

[0036] Fig.12 It is a schematic diagram of the structure of an electronic device for implementing the deposition phase modeling method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] 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.

[0038] 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 interchangeable 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. The situations of "target", "original", etc. are similar and will not be repeated here. In addition, the terms "including" and "having" and any of their variations 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.

[0039] Figure 1 It is a flow chart of a sedimentary phase modeling method provided in an embodiment of the present invention. This embodiment can be applied to the case of sedimentary phase modeling, and in particular to the case of integrating geological knowledge into the sedimentary phase model. The method can be executed by the sedimentary phase modeling device provided in an embodiment of the present invention, and the device can be implemented by software and / or hardware, and the device can be integrated on an electronic device, and the electronic device can be various user terminals or servers.

[0040] See also Figure 1The method of the embodiment of the present invention specifically includes the following steps:

[0041] S110 . For a carbonate reservoir for which sedimentary phase modeling is to be performed, a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir are determined.

[0042] Among them, the carbonate reservoir can be understood as the carbonate reservoir to be modeled for sedimentary phases. Determine the sedimentary phase plane distribution map and seismic attribute plane distribution map corresponding to the carbonate reservoir. In practical applications, optionally, the geological understanding of sedimentation can be formed by integrating the understanding of core, well logging, seismic and dynamic data, and then the above-mentioned seismic attribute plane distribution map can be obtained based on geological cognition.

[0043] S120, obtaining the planar sedimentary partition boundary according to the planar sedimentary phase distribution map and the planar seismic attribute distribution map, and generating the planar sedimentary partition three-dimensional volume according to the planar sedimentary partition boundary.

[0044] Among them, according to the plane distribution map of sedimentary phase and the plane distribution map of seismic attributes, the plane sedimentary partition boundary is obtained, and the plane sedimentary partition boundary can be used to divide each plane sedimentary partition on the carbonate reservoir. Then, according to the plane sedimentary partition boundary, the plane sedimentary partition three-dimensional body corresponding to the carbonate reservoir is generated, which can be generated according to the assignment method in practical applications.

[0045] S130, determining the seismic phase bodies corresponding to each planar sedimentation partition in the planar sedimentation partition three-dimensional body, and generating the longitudinal and transverse sedimentation partition three-dimensional bodies according to the determined seismic phase bodies.

[0046] For each plane sedimentary partition in the plane sedimentary partition three-dimensional volume, the seismic phase volume corresponding to the plane sedimentary partition is determined. Then, according to the seismic phase volume corresponding to each plane sedimentary partition, a vertical and horizontal sedimentary partition three-dimensional volume corresponding to the carbonate reservoir can be generated.

[0047] S140, statistically analyzing the spatial distribution patterns of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition, and establishing a sedimentary phase model based on the statistically analyzed spatial distribution patterns.

[0048] Among them, since the spatial distribution laws of different sedimentary phases in different longitudinal and transverse sedimentary partitions in the three-dimensional body of longitudinal and transverse sedimentary partitions may be different, in order to establish an accurate sedimentary phase model, these spatial distribution laws can be counted separately, that is, the spatial distribution laws of different sedimentary phases in different longitudinal and transverse sedimentary partitions are counted separately, and then the sedimentary phase model (i.e., sedimentary phase three-dimensional model) is established based on these spatial distribution laws. In practical applications, optionally, the above-mentioned spatial distribution law can be, for example, a longitudinal proportional relationship and a variation function.

[0049] It should be noted that the above technical solution, when establishing the sedimentary facies model, does not directly consider the spatial distribution law of sedimentary facies from a global perspective, but fully considers the changes in geological understanding brought about by the spatial changes in the sedimentary background and the resulting local geological statistical laws. In this way, the sedimentary facies model is established in different zones by combining the differences in the control of seismic phases on sedimentary facies and the differences in the vertical development sequence of sedimentary facies in different sedimentary backgrounds. That is, the sedimentary facies model is established using sedimentary zoning control. This makes the spatial distribution of sedimentary facies more consistent with geological understanding and better reflects the heterogeneity of the spatial distribution of sedimentary facies, which has important guiding significance for characterizing the heterogeneity of carbonate reservoirs.

[0050] The technical solution of the embodiment of the present invention is aimed at the carbonate reservoir to be modeled for sedimentary phases, by determining the sedimentary phase plane distribution map and the seismic attribute plane distribution map corresponding to the carbonate reservoir; according to the sedimentary phase plane distribution map and the seismic attribute plane distribution map, the plane sedimentary partition boundary is obtained, and the plane sedimentary partition three-dimensional body is generated according to the plane sedimentary partition boundary; the seismic phase body corresponding to each plane sedimentary partition in the plane sedimentary partition three-dimensional body is determined, and the longitudinal and transverse sedimentary partition three-dimensional body is generated according to each determined seismic phase body; the spatial distribution law of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body is statistically analyzed, and the sedimentary phase model is established according to each statistical spatial distribution law. The above technical solution improves the accuracy of sedimentary phase characterization of carbonate reservoirs by using sedimentary partition control to establish a sedimentary phase model, that is, by reflecting the control effect of geological knowledge on heterogeneity and integrating it into the sedimentary phase model, compared with the implementation scheme of establishing a sedimentary phase model from a global perspective.

[0051] An optional technical solution for determining a sedimentary facies plane distribution map corresponding to a carbonate reservoir includes:

[0052] The single well sedimentary facies corresponding to the carbonate reservoir are divided, and a sedimentary facies plane distribution map is drawn based on the division results and the seismic attributes corresponding to the carbonate reservoir.

[0053] Among them, the well logging data corresponding to the carbonate reservoir is used to obtain the single well sedimentary phase, and then the single well sedimentary phase is divided, and the sedimentary phase plane distribution map is drawn based on the obtained division results and the seismic attributes corresponding to the carbonate reservoir. The above technical solution, based on well logging data and seismic attributes, realizes the accurate drawing of the sedimentary phase plane distribution map, thus laying the foundation for the heterogeneity analysis of the sedimentary phase.

[0054] Figure 2It is a flow chart of another sedimentary phase modeling method provided in an embodiment of the present invention. This embodiment is optimized based on the above-mentioned technical solutions. In this embodiment, optionally, according to the statistical spatial distribution laws, a sedimentary phase model is established, which may include: according to the statistical spatial distribution laws, respectively setting the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition; according to the setting results corresponding to each longitudinal and transverse sedimentary partition, a sedimentary phase model is established. Among them, the explanations of the terms that are the same or corresponding to the above-mentioned embodiments are not repeated here.

[0055] See also Figure 2 The method of this embodiment may specifically include the following steps:

[0056] S210. For a carbonate reservoir for which sedimentary phase modeling is to be performed, a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir are determined.

[0057] S220, obtaining the planar sedimentary partition boundary according to the planar sedimentary phase distribution map and the planar seismic attribute distribution map, and generating the planar sedimentary partition three-dimensional volume according to the planar sedimentary partition boundary.

[0058] S230, determining the seismic phase bodies corresponding to each planar deposition partition in the planar deposition partition three-dimensional body, and generating the longitudinal and transverse deposition partition three-dimensional bodies according to the determined seismic phase bodies.

[0059] S240. Statistically calculate the spatial distribution patterns of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition.

[0060] S250. According to the statistically determined spatial distribution laws, the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition are respectively set.

[0061] Among them, after statistically calculating the spatial distribution laws of different sedimentary phases in different longitudinal and lateral sedimentary partitions, settings can be made again according to these spatial distribution laws, that is, the spatial distribution laws of different sedimentary phases in different longitudinal and lateral sedimentary partitions can be set again, and then combined with subsequent steps, modeling can be carried out according to the obtained setting results.

[0062] S260, establishing a sedimentary phase model according to the setting results corresponding to each longitudinal and transverse sedimentary partition.

[0063] The technical solution of the embodiment of the present invention sets the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition according to the statistically obtained spatial distribution laws, and then establishes a sedimentary phase model according to the obtained setting results, thereby realizing the accurate establishment of the sedimentary phase model.

[0064] An optional technical solution is to statistically analyze the spatial distribution of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional volume of the longitudinal and transverse sedimentary partition, including:

[0065] According to the well logging data corresponding to the carbonate reservoir, the longitudinal proportion relationship and variation function of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition are statistically analyzed;

[0066] According to the statistical spatial distribution laws, the spatial distribution laws of different sedimentary phases in each vertical and horizontal sedimentary partition are set respectively, including:

[0067] According to the statistically obtained vertical proportional relationships and variograms, the variograms within each vertical and horizontal sedimentary partitions are set respectively, the output proportions of different sedimentary phases within each vertical and horizontal sedimentary partitions, and the vertical proportional relationships of the sedimentary phases within the inter-well trend bodies are set according to the corresponding vertical and horizontal sedimentary partitions.

[0068] In other words, after the longitudinal proportional relationship and variogram of different sedimentary phases in each longitudinal and transverse sedimentary partition are statistically calculated through logging data, these longitudinal proportional relationships and variograms can be used to set the variogram in each longitudinal and transverse sedimentary partition, the output ratio of different sedimentary phases in each longitudinal and transverse sedimentary partition, and the longitudinal proportional relationship of the sedimentary phases in the inter-well trend body according to the corresponding longitudinal and transverse sedimentary partitions. Then, based on these setting results, a sedimentary phase model is established using a sequential indication or a truncated Gaussian random modeling algorithm, thereby achieving the effective establishment of the sedimentary phase model.

[0069] Figure 3 It is a flow chart of another sedimentary phase modeling method provided in an embodiment of the present invention. This embodiment is optimized based on the above-mentioned technical solutions. In this embodiment, optionally, the above-mentioned sedimentary phase modeling method may also include: determining the seismic phase source body corresponding to the carbonate reservoir, and calculating the seismic phase source body to obtain the seismic phase three-dimensional body; determining the seismic phase body corresponding to each planar sedimentary partition in the planar sedimentary partition three-dimensional body, which may include: for each planar sedimentary partition in the planar sedimentary partition three-dimensional body, generating a seismic phase body according to the part of the seismic phase three-dimensional body corresponding to the planar sedimentary partition. Among them, the explanations of the terms that are the same or corresponding to the above-mentioned embodiments are not repeated here.

[0070] See also Figure 3 The method of this embodiment may specifically include the following steps:

[0071] S310. For a carbonate reservoir for which sedimentary phase modeling is to be performed, a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir are determined.

[0072] S320, obtaining the planar sedimentary partition boundary according to the planar sedimentary phase distribution map and the planar seismic attribute distribution map, and generating the planar sedimentary partition three-dimensional volume according to the planar sedimentary partition boundary.

[0073] S330, determining the seismic facies source body corresponding to the carbonate reservoir, and calculating the seismic facies source body to obtain a seismic facies three-dimensional body.

[0074] Among them, the seismic phase source body corresponding to the carbonate reservoir is determined. In practical applications, the seismic phase source body may be a seismic attribute, such as a three-dimensional seismic wave impedance body; it may also be a seismic porosity inversion body; etc. This is related to the actual situation and is not specifically limited here.

[0075] The seismic phase source volume is calculated to obtain the seismic phase three-dimensional volume.

[0076] S340. For each plane deposition partition in the plane deposition partition three-dimensional volume, generate a seismic phase volume according to the portion of the seismic phase three-dimensional volume corresponding to the plane deposition partition.

[0077] Among them, since the seismic phase three-dimensional volume is for all planar sedimentary partitions, for each planar sedimentary partition in the planar sedimentary partition three-dimensional volume, a seismic phase volume corresponding to the planar sedimentary partition can be generated according to the part of the seismic phase three-dimensional volume corresponding to the planar sedimentary partition. In practical applications, optionally, since there may be different sedimentary phases in the planar sedimentary partition, corresponding seismic phase volumes can be generated for these sedimentary phases in a more detailed manner.

[0078] S350, generating a three-dimensional body of longitudinal and transverse sedimentary partitions according to each determined seismic phase body.

[0079] Among them, according to the seismic phase body corresponding to each planar sedimentary partition, a three-dimensional body of the longitudinal and transverse sedimentary partition is generated, that is, the three-dimensional body of the longitudinal and transverse sedimentary partition is generated in each planar sedimentary partition by combining the three-dimensional seismic phase body. This generation process can be achieved through the assignment method.

[0080] S360, statistically analyzing the spatial distribution patterns of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition, and establishing a sedimentary phase model based on the statistically analyzed spatial distribution patterns.

[0081] The technical solution of the embodiment of the present invention determines the seismic phase source body corresponding to the carbonate reservoir, calculates the seismic phase source body to obtain the seismic phase three-dimensional body, and then generates a seismic phase body for each planar sedimentary partition in the planar sedimentary partition three-dimensional body according to the part of the seismic phase three-dimensional body corresponding to the planar sedimentary partition, thereby realizing the accurate generation of the seismic phase body corresponding to each planar sedimentary partition.

[0082] An optional technical solution for determining the seismic facies source body corresponding to the carbonate reservoir includes:

[0083] The single-well sedimentary phase curves, seismic attributes and seismic porosity inversion bodies corresponding to the carbonate reservoirs are gridded to respectively calculate the frequency distribution of seismic attributes and the frequency distribution of seismic porosity inversion bodies for different sedimentary phases on the carbonate reservoirs;

[0084] According to the frequency distribution of seismic attributes and the frequency distribution of seismic porosity inversion volume for different sedimentary facies, the seismic facies source volume corresponding to the carbonate reservoir is determined from the seismic attributes and the seismic porosity inversion volume.

[0085] In practical applications, optionally, the above-mentioned gridding process can be implemented using Petrel software.

[0086] The above technical solution optimizes the process of determining the source body of the seismic phase, thereby enhancing the connection between the seismic phase and the logging sedimentary phase, so that the seismic phase division is more consistent with geological understanding.

[0087] On this basis, optionally, calculating the seismic phase source volume to obtain the seismic phase three-dimensional volume includes:

[0088] Obtain the frequency distribution curves of different sedimentary facies for seismic facies source bodies;

[0089] According to the intersection points of the obtained frequency distribution curves, the parameter value ranges of the seismic phases corresponding to different sedimentary phases are obtained, and according to the obtained parameter value ranges, the seismic phase source body is calculated to obtain the seismic phase three-dimensional body.

[0090] In other words, based on the preferred seismic phase source body and referring to the intersection points of the frequency distribution curves corresponding to different sedimentary phases, the parameter value ranges corresponding to different seismic phases are determined, so that the three-dimensional seismic phase body can be calculated according to these parameter value ranges.

[0091] The above technical solution optimizes the process of determining the parameter value range of different seismic phases, thereby strengthening the connection between seismic phases and logging sedimentary phases, so that the seismic phase division is more consistent with geological understanding.

[0092] In order to better understand the above-mentioned technical solutions as a whole, the following is an exemplary description of them in combination with specific examples. For example, the carbonate rock of the Cretaceous MA layer of the H oil field in the Middle East is taken as an example, and the establishment process of its sedimentary phase model is shown in the following steps:

[0093] ①Through regional geological analysis, core and thin section analysis, it is believed that the MA layer is in an intertidal-subtidal sedimentary environment, and the sedimentary facies are divided into the following three categories: beach, beach wing and subtidal zone. On this basis, combined with logging data and seismic attributes, the following Figure 4 The plan distribution diagram of sedimentary phases is shown.

[0094] ② Using Petrel software, the single well sedimentary phase curve, seismic wave impedance body and porosity inversion body corresponding to the single well sedimentation are gridded to obtain the frequency distribution of the seismic wave impedance body and the frequency distribution of the seismic porosity inversion body for different sedimentary phases on the MA layer. Since the frequency distribution of different sedimentary phases for the seismic porosity inversion body is more different (such as Figure 5 As shown in the figure, the three frequency distribution curves from left to right correspond to the sedimentary facies of subtidal zone, beach wing and beach respectively. Therefore, the seismic porosity inversion volume is taken as the seismic facies source volume of the seismic facies of this layer.

[0095] ③Through the intersection points of the frequency distribution curves obtained in step ②, the parameter value ranges of the seismic phases corresponding to different sedimentary phases are obtained. For example, the parameter value range of the seismic porosity inversion body corresponding to the beach is Φ>0.145; the parameter value range of the seismic porosity inversion body corresponding to the beach wing is 0.08≤Φ≤0.145; the parameter value range of the seismic porosity inversion body corresponding to the subtidal zone is Φ<0.08. Then, combined with these parameter value ranges, the seismic phase source body is calculated to obtain the seismic phase three-dimensional body.

[0096] ④ According to the sedimentary phase plane distribution map and the seismic attribute plane distribution map, jointly determine the plane sedimentary zone boundary. Here, the seismic attribute plane distribution map is the seismic wave impedance plane distribution map as an example. Figure 6 The seismic wave impedance plane distribution diagram is shown. On this basis, combined with Figure 4 and Figure 6 It can be seen that the sedimentary facies can be divided into the following three sedimentary zones on the plane: northwest zone, central zone and southeast zone. By digitizing the plane sedimentary zone boundaries, the three-dimensional volume of the plane sedimentary zone is obtained by the assignment method in petrel, as shown in Figure 7 .

[0097] ⑤ In each plane sedimentary partition, the seismic phase body is generated by the assignment method in combination with the seismic phase three-dimensional body, and then the vertical and horizontal sedimentary partition three-dimensional body is generated according to each generated seismic phase body, such as Figure 8 shown.

[0098] ⑥ Based on the logging data, the longitudinal proportional relationship and variation function of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition are statistically analyzed.

[0099] Here we take the Northwest District as an example. Figure 9aIt shows the vertical proportional relationship of various sedimentary facies in the Northwest Sedimentary Area 1. Figure 9b It shows the vertical proportional relationship of various sedimentary facies in the Northwest Sedimentary Area 2. Fig.9c The vertical proportional relationship of various sedimentary facies in the northwest sedimentary zone 3 is shown.

[0100] ⑦ According to the various longitudinal proportional relationships and variograms statistically obtained in step ⑥, the variograms and output ratios of each sedimentary phase in the sedimentary zones 1, 2 and 3 of the northwest, central and southeast areas are set respectively, and the longitudinal proportional relationship of the sedimentary phases in the corresponding longitudinal and transverse sedimentary zones of the inter-well trend body is established, and the three-dimensional sedimentary phase model is established using the sequential indicator or truncated Gaussian random modeling algorithm, such as Fig.10 shown.

[0101] In the above example, based on seismic inversion and logging data, the sedimentary zoning was divided and the sedimentary facies model was established using seismic facies control, thereby improving the accuracy of sedimentary facies characterization.

[0102] Fig.11 This is a structural block diagram of a sedimentary phase modeling device provided in an embodiment of the present invention, and the device is used to execute the sedimentary phase modeling method provided in any of the above embodiments. The device and the sedimentary phase modeling method of the above embodiments belong to the same inventive concept. For details not described in detail in the embodiment of the sedimentary phase modeling device, reference can be made to the embodiment of the above sedimentary phase modeling method. Fig.11 The device may specifically include: a plane distribution map determination module 410, a plane deposition partition three-dimensional body generation module 420, a vertical and horizontal deposition partition three-dimensional body generation module 430 and a deposition phase model establishment module 440.

[0103] The plane distribution map determining module 410 is used to determine the sedimentary phase plane distribution map and the seismic attribute plane distribution map corresponding to the carbonate reservoir for which sedimentary phase modeling is to be performed;

[0104] A plane sedimentation partition three-dimensional volume generation module 420 is used to obtain the plane sedimentation partition boundary according to the plane sedimentation phase distribution map and the plane seismic attribute distribution map, and generate the plane sedimentation partition three-dimensional volume according to the plane sedimentation partition boundary;

[0105] A vertical and horizontal deposition partition three-dimensional volume generation module 430 is used to determine the seismic phase volume corresponding to each plane deposition partition in the plane deposition partition three-dimensional volume, and generate the vertical and horizontal deposition partition three-dimensional volume according to each determined seismic phase volume;

[0106] The sedimentary phase model building module 440 is used to count the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of the longitudinal and transverse sedimentary partition, and to build a sedimentary phase model according to the statistically determined spatial distribution laws.

[0107] Optionally, the sedimentary phase model building module 440 may include:

[0108] A spatial distribution law setting unit is used to set the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition according to the statistically determined spatial distribution laws;

[0109] The sedimentary facies model building unit is used to build a sedimentary facies model according to the setting results corresponding to each longitudinal and transverse sedimentary partition.

[0110] On this basis, optionally, the sedimentary phase model building module 440 may include:

[0111] A variogram statistics unit is used to count the longitudinal proportion relationship and variogram of different sedimentary phases in each longitudinal and transverse sedimentary partition in the three-dimensional body of longitudinal and transverse sedimentary partitions according to the well logging data corresponding to the carbonate reservoir;

[0112] The spatial distribution law setting unit is specifically used for:

[0113] According to the statistically obtained vertical proportional relationships and variograms, the variograms within each vertical and horizontal sedimentary partitions, the output proportions of different sedimentary phases within each vertical and horizontal sedimentary partitions, and the vertical proportional relationships of the sedimentary phases within the inter-well trend bodies corresponding to the vertical and horizontal sedimentary partitions are set respectively.

[0114] Optionally, the above-mentioned sedimentary phase modeling device further includes:

[0115] A module for obtaining a three-dimensional seismic phase body is used to determine the seismic phase source body corresponding to the carbonate reservoir, and calculate the seismic phase source body to obtain the three-dimensional seismic phase body;

[0116] The vertical and horizontal deposition partition three-dimensional volume generation module 430 includes:

[0117] The seismic phase body generating unit is used to generate a seismic phase body for each plane sedimentary partition in the plane sedimentary partition three-dimensional body according to the part of the seismic phase three-dimensional body corresponding to the plane sedimentary partition.

[0118] On this basis, optional, the seismic phase three-dimensional volume acquisition module includes:

[0119] A frequency distribution statistics unit is used to grid the single-well sedimentary phase curve, seismic attributes and seismic porosity inversion body corresponding to the carbonate reservoir, so as to obtain the frequency distribution of seismic attributes and the frequency distribution of seismic porosity inversion body of different sedimentary phases on the carbonate reservoir respectively;

[0120] The seismic phase source body determination unit is used to determine the seismic phase source body corresponding to the carbonate reservoir from the seismic attributes and the seismic porosity inversion body according to the frequency distribution of seismic attributes of different sedimentary phases and the frequency distribution of seismic porosity inversion body.

[0121] On this basis, optional, the seismic phase three-dimensional volume acquisition module includes:

[0122] A frequency distribution curve obtaining unit is used to obtain frequency distribution curves of different sedimentary phases for seismic phase source bodies;

[0123] The seismic phase three-dimensional body obtaining unit is used to obtain the parameter value ranges of the seismic phases corresponding to different sedimentary phases according to the intersection points of the obtained frequency distribution curves, and calculate the seismic phase source body according to the obtained parameter value ranges to obtain the seismic phase three-dimensional body.

[0124] Optionally, the plane distribution map determining module 410 may include:

[0125] The sedimentary phase plane distribution map drawing unit is used to divide the single well sedimentary phase corresponding to the carbonate reservoir, and draw a sedimentary phase plane distribution map based on the obtained division results and the seismic attributes corresponding to the carbonate reservoir.

[0126] The sedimentary phase modeling device provided by the embodiment of the present invention, through the plane distribution map determination module, for the carbonate reservoir to be subjected to sedimentary phase modeling, by determining the sedimentary phase plane distribution map and the seismic attribute plane distribution map corresponding to the carbonate reservoir; through the plane sedimentary partition three-dimensional body generation module, according to the sedimentary phase plane distribution map and the seismic attribute plane distribution map, the plane sedimentary partition boundary is obtained, and the plane sedimentary partition three-dimensional body is generated according to the plane sedimentary partition boundary; through the longitudinal and transverse sedimentary partition three-dimensional body generation module, the seismic phase body corresponding to each plane sedimentary partition in the plane sedimentary partition three-dimensional body is determined, and the longitudinal and transverse sedimentary partition three-dimensional body is generated according to each determined seismic phase body; through the sedimentary phase model establishment module, the spatial distribution law of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body is statistically analyzed, and the sedimentary phase model is established according to each statistically analyzed spatial distribution law. The above device establishes the sedimentary phase model by using the sedimentary partition control, that is, by reflecting the control effect of geological knowledge on heterogeneity and integrating it into the sedimentary phase model, compared with the implementation scheme of establishing the sedimentary phase model from a global perspective, the accuracy of the sedimentary phase characterization of the carbonate reservoir is improved.

[0127] The deposition phase modeling device provided in the embodiment of the present invention can execute the deposition phase modeling method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0128] It is worth noting that in the embodiment of the above-mentioned sedimentary phase modeling device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0129] Fig.12 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, 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.

[0130] like Fig.12As 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.

[0131] 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.

[0132] 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 the sedimentary phase modeling method.

[0133] In some embodiments, the depositional phase modeling method may 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 may 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 depositional phase modeling method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the depositional phase modeling method in any other appropriate manner (e.g., by means of firmware).

[0134] 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.

[0135] 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 as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0136] 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.

[0137] 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).

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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 sedimentary facies modeling method, characterized in that: include: For a carbonate reservoir to be modeled for sedimentary phases, determining a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to the carbonate reservoir; According to the plane distribution map of sedimentary phases and the plane distribution map of seismic attributes, a plane sedimentary partition boundary is obtained, and a plane sedimentary partition three-dimensional volume is generated according to the plane sedimentary partition boundary; Determine the seismic phase bodies corresponding to each plane sedimentation partition in the plane sedimentation partition three-dimensional body, and generate the longitudinal and transverse sedimentation partition three-dimensional body according to each determined seismic phase body; The spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body are statistically analyzed, and a sedimentary phase model is established according to the statistically analyzed spatial distribution laws.

2. The method according to claim 1, characterized in that The sedimentary facies model is established according to the statistical spatial distribution laws, including: According to the statistically determined spatial distribution laws, the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition are respectively set; A sedimentary facies model is established according to the setting results corresponding to each longitudinal and transverse sedimentary partition.

3. The method according to claim 2, characterized in that The statistical spatial distribution law of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body includes: According to the well logging data corresponding to the carbonate reservoir, the longitudinal proportional relationship and the variation function of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body are counted; The spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition are respectively set according to the statistically obtained spatial distribution laws, including: According to the statistically obtained vertical proportional relationships and variograms, the variograms within each vertical and horizontal depositional partitions are set respectively, the output proportions of different depositional phases within each vertical and horizontal depositional partitions, and the vertical proportional relationships of the depositional phases within the inter-well trend bodies are determined based on the corresponding vertical and horizontal depositional partitions.

4. The method according to claim 1, characterized in that Also includes: Determining a seismic phase source body corresponding to the carbonate reservoir, and calculating the seismic phase source body to obtain a seismic phase three-dimensional body; The step of determining the seismic phase body corresponding to each planar sedimentary partition in the planar sedimentary partition three-dimensional body comprises: For each planar deposition partition in the planar deposition partition three-dimensional volume, a seismic phase volume is generated according to the portion of the seismic phase three-dimensional volume corresponding to the planar deposition partition.

5. The method according to claim 4, characterized in that The step of determining the seismic facies source body corresponding to the carbonate reservoir comprises: Gridding the single-well sedimentary phase curve, seismic attributes and seismic porosity inversion body corresponding to the carbonate reservoir to obtain statistically the frequency distribution of different sedimentary phases on the carbonate reservoir for the seismic attributes and the frequency distribution of the seismic porosity inversion body; According to the frequency distribution of the seismic attributes and the frequency distribution of the seismic porosity inversion volume for the different sedimentary phases, the seismic phase source volume corresponding to the carbonate reservoir is determined from the seismic attributes and the seismic porosity inversion volume.

6. The method according to claim 5, characterized in that The step of calculating the seismic phase source volume to obtain a seismic phase three-dimensional volume comprises: Obtaining frequency distribution curves of the different sedimentary phases for the seismic phase source bodies respectively; According to the intersection points of the obtained frequency distribution curves, the parameter value ranges of the seismic phases corresponding to the different sedimentary phases are obtained, and according to the obtained parameter value ranges, the seismic phase source body is calculated to obtain the seismic phase three-dimensional body.

7. The method according to claim 1, characterized in that The step of determining a sedimentary facies plane distribution map corresponding to the carbonate reservoir comprises: The single well sedimentary facies corresponding to the carbonate reservoir are divided, and a sedimentary facies plane distribution map is drawn according to the obtained division results and the seismic attributes corresponding to the carbonate reservoir.

8. A sedimentary phase modeling device, characterized in that: include: A plane distribution map determination module is used to determine a sedimentary phase plane distribution map and a seismic attribute plane distribution map corresponding to a carbonate reservoir for which sedimentary phase modeling is to be performed; A planar sedimentary partition three-dimensional volume generation module is used to obtain a planar sedimentary partition boundary according to the sedimentary phase plane distribution map and the seismic attribute plane distribution map, and generate a planar sedimentary partition three-dimensional volume according to the planar sedimentary partition boundary; A vertical and horizontal sedimentation partition three-dimensional volume generation module is used to determine the seismic phase volume corresponding to each plane sedimentation partition in the plane sedimentation partition three-dimensional volume, and generate the vertical and horizontal sedimentation partition three-dimensional volume according to each determined seismic phase volume; The sedimentary phase model building module is used to count the spatial distribution laws of different sedimentary phases in each longitudinal and transverse sedimentary partition in the longitudinal and transverse sedimentary partition three-dimensional body, and to build a sedimentary phase model according to the statistically obtained spatial distribution laws.

9. An electronic device, characterized in that: include: at least one processor; as well as 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 performs the sedimentary phase modeling method according to any one of claims 1 to 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 sedimentary phase modeling method as described in any one of claims 1 to 7 when executed.

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