Carbonate rock sedimentary configuration characterization method and device, electronic equipment and medium

Abstract

The invention discloses a carbonate rock sedimentary configuration characterization method and device, electronic equipment and a medium. The method comprises the steps that the carbonate rock sedimentary configuration scale is determined according to production requirements; and determining characterization content and characterization means corresponding to the sedimentary configuration scale, and characterizing the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration. According to the technical scheme, the carbonate rock sedimentary configuration characteristics of different scales can be systematically determined, so that the spatial heterogeneity of a carbonate rock sedimentary system can be more objectively known, and a foundation is laid for reservoir heterogeneity evaluation.

Description

Technical Field

[0001] The present invention relates to the technical field of fine description of carbonate reservoirs, and in particular to a characterization method, device, electronic equipment and medium for carbonate sedimentary configuration. Background Art

[0002] Configuration, also known as architectural structure, refers to the shape, scale, direction and superposition relationship of different levels of constituent units. It is an important means to understand the internal heterogeneity of the reservoir, especially the seepage barrier and seepage differences. It is of great significance for optimizing development strategies and improving oil and gas recovery rates.

[0003] The study of sedimentary architecture began with clastic rocks, especially fluvial facies. It is defined as describing the geometric morphology and internal combination of river channel and overbank deposits in fluvial sequences. Compared with the traditional analysis of sedimentary facies by profile measurement and interpretation, the new method of studying fluvial sedimentary facies analysis by means of architecture element analysis focuses on the geometric morphology and development relationship of lithofacies and architecture elements. Subsequently, foreign scholars, with fluvial facies as the main research object, carried out a large number of pioneering studies on reservoir architecture levels, elements, patterns and sedimentary mechanisms, and clarified the classification scheme of river sedimentary architecture into 8 levels of interfaces, 20 lithofacies types and 9 structural units, which is more mature in application in clastic rocks. Since the first complete proposal of the concept of reservoir architecture and the analysis method of fluvial facies reservoir architecture elements, many scholars have carried out architecture research on outcrops and modern deposits, and have achieved a large number of research results, covering almost all terrestrial channelized deposits, such as meandering rivers, shaped rivers, tidal channels, deltas, fan deltas, turbidite deposits, alluvial fans, etc. Compared with clastic rocks, carbonate rocks have more significant complexity in terms of sedimentary systems, lithofacies types, and geometric morphology of microfacies units. Therefore, clastic rock configuration characterization technology cannot be directly applied to carbonate rocks. The current research on carbonate rock sedimentary configuration is still in its infancy. Based on outcrop research, the configuration of the grain beach of the Penglaiba Formation in the Tarim Basin has been studied. In recent years, some scholars have conducted exploratory research on the sedimentary configuration of carbonate grain beaches through outcrop geological research combined with outcrop digitalization methods such as laser scanners, ground penetrating radars, panoramic imagers, and dynamic global positioning systems. A preliminary technical idea has been formed to use outcrop sections and digital methods to obtain three-dimensional spatial information between sections, and then establish a three-dimensional reservoir geological model.

[0004] However, the existing technology has at least the following defects that are difficult to overcome: First, the sedimentary system, lithofacies type, and geometric morphology of microfacies units of carbonate rocks show complex development characteristics at different scales, and lacks reasonable characterization scale determination, and cannot well meet the production needs under different exploration and development scenarios; second, it is impossible to achieve step-by-step constraints on heterogeneous characteristics at different scales, and the understanding of heterogeneity is not objective and reliable enough, which affects the depth of understanding of reservoir heterogeneity and restricts oil and gas exploration and development and production. Summary of the invention

[0005] The present invention provides a method, device, electronic equipment and medium for characterizing carbonate rock sedimentary configuration, which can accurately and objectively characterize carbonate rock sedimentary configuration.

[0006] According to one aspect of the present invention, a method for characterizing carbonate rock sedimentary configuration is provided, the method comprising:

[0007] Determine the scale of carbonate rock sedimentary architecture according to production requirements;

[0008] Determine the characterization content and characterization means corresponding to the sedimentary configuration scale, and characterize the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

[0009] According to another aspect of the present invention, there is provided a device for characterizing carbonate rock sedimentary configuration, the device comprising:

[0010] A sedimentary structure scale determination module is used to determine the carbonate rock sedimentary structure scale according to production requirements;

[0011] The sedimentary configuration scale characterization module is used to determine the characterization content and characterization means corresponding to the sedimentary configuration scale, and characterize the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

[0012] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0013] at least one processor; and

[0014] a memory communicatively connected to the at least one processor; wherein,

[0015] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the method for characterizing carbonate rock depositional configuration described in any embodiment of the present invention.

[0016] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the method for characterizing carbonate rock sedimentary configuration described in any embodiment of the present invention when executed by a processor.

[0017] The technical solution of the embodiment of the present invention determines the scale of carbonate rock sedimentary architecture according to production requirements, then determines the characterization content and characterization means corresponding to the scale of sedimentary architecture, and characterizes the scale of sedimentary architecture based on the characterization content and characterization means to generate analysis results of carbonate rock sedimentary architecture. This technical solution can systematically determine the characteristics of carbonate rock sedimentary architecture at different scales to more objectively understand the spatial heterogeneity of carbonate rock sedimentary systems and lay the foundation for reservoir heterogeneity evaluation.

[0018] 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

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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.

[0020] Figure 1 is a flow chart of a method for characterizing carbonate rock sedimentary configuration provided in Example 1 of the present invention;

[0021] Figure 2 It is a regional seismic sequence stratigraphic interpretation result diagram provided in Example 1 of the present application;

[0022] Figure 3 is a platform-scale sedimentary configuration diagram provided in Example 1 of the present application;

[0023] Figure 4 It is a reservoir-scale sedimentary configuration diagram provided in Example 1 of the present application;

[0024] Figure 5 This is a cross-sectional distribution diagram of a well group provided in Example 1 of the present application;

[0025] Figure 6 It is a schematic diagram of the single well configuration interface identification provided in Example 1 of the present application;

[0026] Figure 7 is a schematic diagram of the comparison of the well configuration interface provided in Example 1 of the present application;

[0027] Figure 8 It is a schematic diagram of determining the boundary of the inter-well configuration unit provided in Example 1 of the present application;

[0028] Fig. 9 It is a schematic diagram of a well group profile deposition configuration unit structure provided in Example 1 of the present application;

[0029] Fig.10 This is a well group scale sedimentation configuration diagram provided in Example 1 of the present application;

[0030] Fig.11 A schematic diagram of the structure of a carbonate rock sedimentation configuration characterization device provided in the second embodiment of the present invention;

[0031] Fig.12 It is a schematic diagram of the structure of an electronic device for implementing the method for characterizing carbonate rock deposition configuration according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] 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.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment 1

[0035] Figure 1 This is a flow chart of a method for characterizing carbonate rock depositional configurations according to the first embodiment of the present invention. This embodiment is applicable to the case of objectively characterizing carbonate rock depositional configurations. The method can be executed by a carbonate rock depositional configuration characterization device. The carbonate rock depositional configuration characterization device can be implemented in the form of hardware and / or software. The carbonate rock depositional configuration characterization device can be configured in a device. For example, the device can be a background server or other device with communication and computing capabilities. Figure 1 As shown, the method includes:

[0036] S110. Determine the scale of carbonate rock sedimentary architecture based on production requirements.

[0037] In this plan, production needs include the needs for predicting favorable zones in exploration, the needs for deploying development well patterns, and the needs for optimizing water injection strategies.

[0038] In this embodiment, the sedimentary architecture may refer to the geometrical morphology and internal combination of the channel and overbank deposits in the fluvial sequence. The sedimentary architecture scales include platform scale, reservoir scale, and well group scale.

[0039] Specifically, the sedimentary architecture scale corresponding to the need for prediction of favorable zones in exploration is the platform scale; the sedimentary architecture scale corresponding to the need for development well network deployment is the reservoir scale; and the sedimentary architecture scale corresponding to the need for water injection strategy optimization is the well group scale.

[0040] S120, determining characterization content and characterization means corresponding to the sedimentary configuration scale, and characterizing the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

[0041] In this scheme, the platform-scale sedimentary architecture aims to characterize the temporal and spatial evolution of reservoir phases; the reservoir-scale sedimentary architecture aims to characterize the development of interlayers and reservoir units within the reservoir; and the well-group-scale sedimentary architecture aims to characterize the reservoir superposition and connectivity between injection wells and development wells.

[0042] In this embodiment, the characterization content and characterization means are predetermined and used to perform configuration characterization on the platform scale, reservoir scale, and well group scale, so as to systematically determine the carbonate rock sedimentary configuration characteristics at different scales, so as to more objectively understand the spatial heterogeneity of the carbonate rock sedimentary system and lay the foundation for the evaluation of reservoir heterogeneity.

[0043] Specifically, after determining the scale of carbonate rock sedimentary architecture, the scale of sedimentary architecture can be characterized based on the characterization content and characterization means corresponding to the scale of sedimentary architecture.

[0044] Optionally, the sedimentary configuration scale includes platform scale, reservoir scale, and well group scale;

[0045] Accordingly, the characterization content corresponding to the sedimentary configuration scale is determined, including:

[0046] The characterization contents corresponding to the platform scale are the division of the sequence stratigraphic framework, the types of each sequence platform, the properties of the high-energy phase belt, and the migration law of the high-energy phase belt;

[0047] The characterization contents corresponding to the reservoir scale are determination of the platform location of the reservoir, division of the high-frequency sequence stratigraphic framework, identification and comparison of low-energy facies, and superposition characteristics and comparison of high-energy microfacies;

[0048] The characterization contents corresponding to the well group scale are determination of the sedimentary environment, platform location and reservoir location of the well group, design of the grid profile within the well group, identification of single well configuration interface, comparison of inter-well configuration interface, determination of inter-well configuration unit boundary, and combination relationship of inter-well configuration units.

[0049] In this scheme, the scale of the carbonate rock sedimentary architecture to be characterized is determined, and the sedimentary architecture scale includes platform scale, reservoir scale and well group scale. Then, the platform-scale sedimentary architecture is characterized by dividing the sequence stratigraphic framework, determining the platform type of each sequence, determining the properties of the high-energy phase belt and determining the migration law of the high-energy phase belt.

[0050] Furthermore, on the basis of determining the platform location of the reservoir, a high-frequency sequence stratigraphic framework is established to identify and compare the low-energy and high-energy phase zones, thereby achieving the characterization of the reservoir-scale sedimentary architecture.

[0051] In this embodiment, based on the determination of the sedimentary platform position and reservoir position of the well group, the characterization of the sedimentary configuration at the well group scale is achieved through the identification of single well configuration interfaces, comparison of inter-well configuration interfaces, determination of inter-well configuration unit boundaries, and characterization of inter-well configuration unit combination relationships.

[0052] Specifically, regional two-dimensional seismic profiles can be used in combination with drilling to characterize platform-scale sedimentary architecture; seismic high-resolution processing data volumes and reflection coefficient profiles can be used to characterize reservoir-scale sedimentary architecture; and horizontal wells combined with reflection coefficient profiles and attribute profiles can be used to characterize sedimentary architecture between well groups.

[0053] Optionally, determining a characterization means corresponding to the scale of the deposition configuration includes:

[0054] The characterization methods corresponding to the division of the sequence stratigraphic framework in the platform scale include the three-level sequence division of single wells and the sequence stratigraphic interpretation of regional seismic sections;

[0055] Among them, the platform types include open platform, semi-restricted platform, restricted platform, isolated platform and gentle slope; the properties of the high-energy phase belt include platform edge beach, intra-platform beach and tidal channel; the migration law of the high-energy phase belt is used to characterize that within the same sequence framework, the high-energy phase belt is a progradational, aggradational and retrogradational superposition.

[0056] In this scheme, the characterization of platform-scale sedimentary architecture includes the division of sequence stratigraphic framework, platform types of each sequence, properties of high-energy phase belts, and migration laws of high-energy phase belts. Among them, the division of sequence stratigraphic framework includes the division of three-level sequences of single wells and the sequence stratigraphic interpretation of regional seismic profiles; platform types include open platforms, semi-restricted platforms, restricted platforms, isolated platforms, and gentle slopes; properties of high-energy phase belts include platform margin beaches, intra-platform beaches, and tidal channels; migration laws of high-energy phase belts refer to the fact that within the same sequence framework, high-energy phase belts are superimposed in the form of progradational, aggradational, and retrogradational types.

[0057] In this example, the cross-scale characterization of carbonate sedimentary architecture in the M reservoir of the H oil field is performed. Figure 2 is a regional seismic sequence stratigraphic interpretation result diagram provided in Example 1 of the present application, such as Figure 2 As shown in the figure, for the target oilfield and target reservoir, the 2D seismic profiles are spliced ​​within the regional scope. The target oilfield is located in the middle of the 2D seismic profile. On the basis of the single well sequence stratigraphic calibration, the onlap, progradation, aggradation, retrogradation and truncation characteristics representing the sequence interface are identified on the 2D seismic profile, and the seismic sequence stratigraphic interpretation is performed to identify five third-order sequences. Among them, sequence 2 and sequence 4 develop lowstand domains, transgressive domains and highstand domains, and the other sequences are composed of transgressive domains and highstand domains.

[0058] Furthermore, Figure 3 is a table-scale sedimentary configuration diagram provided in Example 1 of the present application, such as Figure 3 As shown, under the constraint of a single well, the platform edge is identified based on the seismic facies and seismic reflection structure, the platform type is determined, and the main sedimentary facies types and development characteristics should be pointed out to reflect the migration law of the platform edge break zone in the sequence framework.

[0059] Specifically, the Rumaila-MC2-2 sequence is a gentle slope to a rimmed platform, with a high-energy phase zone developed on the left side and a progradational structure, making it a favorable exploration zone; MC2-1-MC1-2 is a gentle slope with stable thickness and a wide range of sea level changes; MC1-1-MB2-1 is an open platform with a rimmed platform developed at the end of the sequence, a blocky structure, and a lateral migration superposition structure of the platform margin beach; the MB1-2 sequence is a semi-restricted platform with a platform margin beach developed on the left side, a layered superposition, and an aggradational structure; the MB1-1-MA sequence is a gentle slope, mainly subtidal.

[0060] Optionally, determining a characterization means corresponding to the scale of the deposition configuration further includes:

[0061] Determine the characterization means corresponding to the division of the medium- and high-frequency sequence stratigraphic framework at the reservoir scale, including position determination in the third-order sequence, fourth-order sequence division of a single well, high-resolution processing of seismic sections within the reservoir, and high-frequency sequence stratigraphic correlation;

[0062] Among them, the platform location includes the platform edge, the platform interior, and the basin; the identification and comparison of the low-energy phases include subtidal, lagoon, tidal flat, and swamp, which are composed of mud-grained mud-structured lithofacies.

[0063] In this embodiment, the reservoir-scale sedimentary architecture characterization includes the platform position of the reservoir, the division of the high-frequency sequence stratigraphic framework, the identification and comparison of low-energy phases, and the superposition characteristics and comparison of high-energy microphases; wherein, the platform position includes the platform edge, the platform interior, and the basin; the division of the high-frequency sequence stratigraphic framework includes the position determination in the third-order sequence, the division of the fourth-order sequence of a single well, the high-resolution processing of the seismic profile in the reservoir, and the comparison of high-frequency sequence stratigraphy; the identification and comparison of low-energy phases include subtidal, lagoon, tidal flat, and swamp, which are composed of mud-grained mud-structured lithofacies.

[0064] In this scheme, the M reservoir is located within the open and semi-restricted platforms of the MC1-1-MB2-1 and MB1-2 sequences, and the reservoir is characterized by layered superposition and accretion. Figure 4 is a reservoir scale sedimentary configuration diagram provided in Example 1 of the present application, such as Figure 4 As shown, based on the high-frequency sequence division and comparison of lithofacies superposition cycles and high-resolution seismic data, the M reservoir is divided into two third-order sequences and six fourth-order sequences.

[0065] Furthermore, low-energy phase zones are identified in the sequence stratigraphic framework. Four low-energy phase zones are developed in the M reservoir, including the subtidal zone at the bottom of MC1-1, the swamp and incised valley phases of MB2-1, and the lagoon phase of MB1-2. Among them, the subtidal zone at the bottom of MC1-1 is stably developed within the reservoir, the swamp and incised valley low-energy phase zones are developed in most areas of the top of MB2-1, and MB1-2 has the lagoon phase as the background phase. That is, the lower sequence and upper sequence in the M reservoir are vertically divided by the low-energy phase zone, forming a relatively independent sedimentary system.

[0066] Further, such as Figure 4 As shown in the figure, under the division of the interlayer formed by the low-energy phase belt, the high-energy phase belt in the reservoir constitutes the main reservoir, the beach wing and bioclastic beach in the middle and upper parts of the lower sequence are thick-layered and blocky, and the middle interlayer is not developed; the upper sequence is in a lagoon background, in which bioclastic beaches and tidal channels are scattered and superimposed in a lens-shaped manner to form a reservoir unit, with stronger heterogeneity.

[0067] In this scheme, the development characteristics of the above-mentioned low-energy phases and high-energy phases are consistent with the characteristics of platform-scale sedimentary architecture.

[0068] Optionally, determining a characterization means corresponding to the scale of the deposition configuration further includes:

[0069] Determining the characterization means corresponding to the well group internal grid profile design in the well group scale includes a cross-shaped design of the oil production well composition within the preset range;

[0070] Determining the characterization means corresponding to the comparison of the well configuration interface in the well group scale includes reflection coefficient profile constraint and cycle superposition relationship comparison;

[0071] Determining the characterization means corresponding to the boundary determination of the well configuration unit between the well groups in the well group scale includes boundary determination based on seismic frequency division coherence weighted fusion technology, seismic attribute body boundary calibration, and plane information revealed by horizontal wells and highly deviated wells;

[0072] Among them, the single well configuration interface identification is used to characterize the hierarchical identification of the configuration interface on a single well; the inter-well configuration unit combination relationship includes beach-beach docking, beach-tidal channel docking, tidal channel lagoon docking, and beach-lagoon docking.

[0073] In this scheme, the characterization of sedimentary architecture at the well group scale includes determining the sedimentary environment / platform and reservoir location of the well group, designing the grid profile within the well group, identifying the single well architecture interface, comparing the architecture interface between wells, determining the boundaries of the architecture units between wells, and combining the architecture units between wells. Among them, the design of the grid profile within the well group refers to the design of 2-3 grid profiles in a cross-shaped pattern with the injection well as the surrounding oil production wells, with a profile span of 1-3km. The comparison of the architecture interface between wells includes the constraints of the reflection coefficient profile and the comparison of the cycle superposition relationship. The determination of the boundaries of the architecture units between wells includes the boundary determination based on the seismic frequency division coherence weighted fusion technology, the calibration of the boundaries of the seismic attribute body, and the plane information revealed by the horizontal wells and the high-angle wells. The combination relationship of the architecture units between wells refers to the docking relationship of the high-energy sedimentary facies belts between wells, including beach-beach docking, beach-tidal channel docking, tidal channel-lagoon docking, and beach-lagoon docking.

[0074] Optionally, the single well configuration interface classification includes eight-level interface, seven-level interface, six-level interface, five-level interface, and four-level interface;

[0075] Among them, the interface type corresponding to the eighth-level interface is the third-level sequence interface; the interface type corresponding to the seventh-level interface is the fourth-level sequence interface; the interface type corresponding to the sixth-level interface is the different microfacies combination interface; the interface type corresponding to the fifth-level interface is the fifth-level configuration envelope; the interface type corresponding to the fourth-level interface is a single tidal channel and a single-period beach interface.

[0076] Specifically, configuration interface identification refers to the hierarchical identification of configuration interfaces on a single well, and the grading scheme is shown in Table 1.

[0077] Table 1

[0078]

[0079] In this embodiment, the well group scale configuration characterization requires the platform scale and reservoir scale sedimentary configuration to be constrained step by step.

[0080] In this scheme, the characterized well group M133 is located in the middle of the reservoir, and the target layer is MC1-1-MB1-2. Figure 5 is a cross-sectional distribution diagram of a well group provided in Example 1 of the present application, such as Figure 5As shown, with the injection well M133D1 as the center, a cross-shaped well section was established to the surrounding matching oil production wells to conduct a three-dimensional characterization of the sedimentary structure, and the span of a single section was controlled within the range of 1-3km.

[0081] Furthermore, Figure 6 is a schematic diagram of the single well configuration interface identification provided in Example 1 of the present application, such as Figure 6 As shown in the figure, within the sequence stratigraphic framework, the fifth and fourth-order configuration interfaces are identified based on the sedimentary microfacies types and superposition relationships combined with the logging curve change cycles. The fifth-order configuration interface is the interface between the tidal channel complex and the beach complex in the fourth-order sequence, corresponding to the cyclic conversion interface of the GR curve rising or falling upward; the fourth-order configuration interface is the interface between the single-stage tidal channel and the single-stage beach.

[0082] In this embodiment, on the seismic reflection coefficient section and the seismic attribute section, according to the constraints of the single well configuration interface and the single well sedimentary microfacies, the inter-well configuration interface comparison and the configuration unit structure characterization are performed. Figure 7 is a schematic diagram of the comparison of the well configuration interface provided in Example 1 of the present application, such as Figure 7 As shown, it is a comparative section of the configuration interface on the seismic reflection coefficient section calibrated by the single well configuration interface. Specifically, it shows the envelope of the tidal channel complex, the envelope of the shoal complex and the configuration interface characteristics of the tidal channel and shoal joint.

[0083] Furthermore, Figure 8 Schematic diagram of the well configuration unit boundary determination provided in the first embodiment of the present application, such as Figure 8 As shown, the interwell extension of the warm-colored attributes may represent the interwell extension of tidal channels and bioclastic beaches.

[0084] In this program, Fig. 9 Schematic diagram of the well group cross-section deposition configuration unit structure provided in Example 1 of the present application, such as Fig. 9 As shown, the superposition structure of the tidal channel and the beach body and the contact relationship between the tidal channel and the beach body are shown. Specifically, in the lower sequence, the bioclastic beach and beach wing of MB2 and MC1-1 are developed in blocks within the well group, and the lateral comparability is good; in the upper sequence, the inter-well comparability and continuity of the tidal channel and the beach body are poor, indicating that the inter-well reservoir connectivity is poor. How to improve the injection-production correspondence is the key to improving the effectiveness of water injection measures.

[0085] Furthermore, Fig.10 is a well group scale sedimentary configuration diagram provided in Example 1 of the present application, and the sedimentary configuration of other grid sections in the well group is characterized, such as Fig.10 As shown in the figure, splicing to form a fence diagram can be used to understand the spatial combination relationship of sedimentary microfacies in three-dimensional space, providing a basis for analyzing the corresponding relationship between reservoir units and inter-well injection and production.

[0086] The technical solution of the embodiment of the present invention determines the scale of carbonate rock sedimentary configuration according to production requirements, then determines the characterization content and characterization means corresponding to the scale of sedimentary configuration, and characterizes the scale of sedimentary configuration based on the characterization content and characterization means to generate analysis results of carbonate rock sedimentary configuration. By executing this technical solution, the characteristics of carbonate rock sedimentary configurations at different scales can be systematically determined to more objectively understand the spatial heterogeneity of carbonate rock sedimentary systems, laying the foundation for reservoir heterogeneity evaluation.

[0087] Embodiment 2

[0088] Fig.11 This is a schematic diagram of the structure of a carbonate rock sedimentation configuration characterization device provided in Example 2 of the present invention. Fig.11 As shown, the device comprises:

[0089] A sedimentary configuration scale determination module 1110 is used to determine the carbonate rock sedimentary configuration scale according to production requirements;

[0090] The sedimentary configuration scale characterization module 1120 is used to determine the characterization content and characterization means corresponding to the sedimentary configuration scale, and characterize the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

[0091] Optionally, the sedimentary configuration scale includes platform scale, reservoir scale, and well group scale;

[0092] Accordingly, the deposition configuration scale characterization module 1120 is specifically used for:

[0093] The characterization contents corresponding to the platform scale are the division of the sequence stratigraphic framework, the types of each sequence platform, the properties of the high-energy phase belt, and the migration law of the high-energy phase belt;

[0094] The characterization contents corresponding to the reservoir scale are determination of the platform location of the reservoir, division of the high-frequency sequence stratigraphic framework, identification and comparison of low-energy facies, and superposition characteristics and comparison of high-energy microfacies;

[0095] The characterization contents corresponding to the well group scale are determination of the sedimentary environment, platform location and reservoir location of the well group, design of the grid profile within the well group, identification of single well configuration interface, comparison of inter-well configuration interface, determination of inter-well configuration unit boundary, and combination relationship of inter-well configuration units.

[0096] Optionally, the deposition configuration dimension characterization module 1120 is further used to:

[0097] The characterization methods corresponding to the division of the sequence stratigraphic framework in the platform scale include the three-level sequence division of single wells and the sequence stratigraphic interpretation of regional seismic sections;

[0098] Among them, the platform types include open platform, semi-restricted platform, restricted platform, isolated platform and gentle slope; the properties of the high-energy phase belt include platform edge beach, intra-platform beach and tidal channel; the migration law of the high-energy phase belt is used to characterize that within the same sequence framework, the high-energy phase belt is a progradational, aggradational and retrogradational superposition.

[0099] Optionally, the deposition configuration dimension characterization module 1120 is further used to:

[0100] Determine the characterization means corresponding to the division of the medium- and high-frequency sequence stratigraphic framework at the reservoir scale, including position determination in the third-order sequence, fourth-order sequence division of a single well, high-resolution processing of seismic sections within the reservoir, and high-frequency sequence stratigraphic correlation;

[0101] Among them, the platform location includes the platform edge, the platform interior, and the basin; the identification and comparison of the low-energy phases include subtidal, lagoon, tidal flat, and swamp, which are composed of mud-grained mud-structured lithofacies.

[0102] Optionally, the deposition configuration dimension characterization module 1120 is further used to:

[0103] Determining the characterization means corresponding to the well group internal grid profile design in the well group scale includes a cross-shaped design of the oil production well composition within the preset range;

[0104] Determining the characterization means corresponding to the comparison of the well configuration interface in the well group scale includes reflection coefficient profile constraint and cycle superposition relationship comparison;

[0105] Determining the characterization means corresponding to the boundary determination of the well configuration unit between the well groups in the well group scale includes boundary determination based on seismic frequency division coherence weighted fusion technology, seismic attribute body boundary calibration, and plane information revealed by horizontal wells and highly deviated wells;

[0106] Among them, the single well configuration interface identification is used to characterize the hierarchical identification of the configuration interface on a single well; the inter-well configuration unit combination relationship includes beach-beach docking, beach-tidal channel docking, tidal channel lagoon docking, and beach-lagoon docking.

[0107] Optionally, the single well configuration interface classification includes eight-level interface, seven-level interface, six-level interface, five-level interface, and four-level interface;

[0108] Among them, the interface type corresponding to the eighth-level interface is the third-level sequence interface; the interface type corresponding to the seventh-level interface is the fourth-level sequence interface; the interface type corresponding to the sixth-level interface is the different microfacies combination interface; the interface type corresponding to the fifth-level interface is the fifth-level configuration envelope; the interface type corresponding to the fourth-level interface is a single tidal channel and a single-period beach interface.

[0109] The carbonate rock deposition configuration characterization device provided in the embodiment of the present invention can execute the carbonate rock deposition configuration characterization method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0110] Embodiment 3

[0111] 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.

[0112] like Fig.12 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0113] 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.

[0114] 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, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for characterizing carbonate rock deposition configurations.

[0115] In some embodiments, the characterization method of carbonate rock deposition configuration can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the characterization method of carbonate rock deposition configuration described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the characterization method of carbonate rock deposition configuration in any other appropriate manner (e.g., by means of firmware).

[0116] 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.

[0117] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0118] 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.

[0119] 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).

[0120] 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.

[0121] 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.

[0122] 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.

[0123] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for characterizing carbonate rock sedimentary architecture, characterized in that: include: Determine the scale of carbonate rock sedimentary architecture according to production requirements; Determine the characterization content and characterization means corresponding to the sedimentary configuration scale, and characterize the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

2. The method according to claim 1, characterized in that The sedimentary architecture scales include platform scale, reservoir scale, and well group scale; Accordingly, the characterization content corresponding to the sedimentary configuration scale is determined, including: The characterization contents corresponding to the platform scale are the division of the sequence stratigraphic framework, the types of each sequence platform, the properties of the high-energy phase belt, and the migration law of the high-energy phase belt; The characterization contents corresponding to the reservoir scale are determination of the platform location of the reservoir, division of the high-frequency sequence stratigraphic framework, identification and comparison of low-energy facies, and superposition characteristics and comparison of high-energy microfacies; The characterization contents corresponding to the well group scale are determination of the sedimentary environment, platform location and reservoir location of the well group, design of the grid profile within the well group, identification of single well configuration interface, comparison of inter-well configuration interface, determination of inter-well configuration unit boundary, and combination relationship of inter-well configuration units.

3. The method according to claim 2, characterized in that Determining a characterization method corresponding to the scale of the sedimentary configuration includes: The characterization methods corresponding to the division of the sequence stratigraphic framework in the platform scale include the three-level sequence division of single wells and the sequence stratigraphic interpretation of regional seismic sections; Among them, the platform types include open platform, semi-restricted platform, restricted platform, isolated platform and gentle slope; the properties of the high-energy phase belt include platform edge beach, intra-platform beach and tidal channel; the migration law of the high-energy phase belt is used to characterize that within the same sequence framework, the high-energy phase belt is a progradational, aggradational and retrogradational superposition.

4. The method according to claim 2, characterized in that: Determining a characterization means corresponding to the sedimentary configuration scale also includes: Determine the characterization means corresponding to the division of the medium- and high-frequency sequence stratigraphic framework at the reservoir scale, including position determination in the third-order sequence, fourth-order sequence division of a single well, high-resolution processing of seismic sections within the reservoir, and high-frequency sequence stratigraphic correlation; Among them, the platform location includes the platform edge, the platform interior, and the basin; the identification and comparison of the low-energy phases include subtidal, lagoon, tidal flat, and swamp, which are composed of mud-grained mud-structured lithofacies.

5. The method according to claim 2, characterized in that: Determining a characterization means corresponding to the sedimentary configuration scale also includes: Determining the characterization means corresponding to the well group internal grid profile design in the well group scale includes a cross-shaped design of the oil production well composition within the preset range; Determining the characterization means corresponding to the comparison of the well configuration interface in the well group scale includes reflection coefficient profile constraint and cycle superposition relationship comparison; Determining the characterization means corresponding to the boundary determination of the well configuration unit between the well groups in the well group scale includes boundary determination based on seismic frequency division coherence weighted fusion technology, seismic attribute body boundary calibration, and plane information revealed by horizontal wells and highly deviated wells; Among them, the single well configuration interface identification is used to characterize the hierarchical identification of the configuration interface on a single well; the inter-well configuration unit combination relationship includes beach-beach docking, beach-tidal channel docking, tidal channel lagoon docking, and beach-lagoon docking.

6. The method according to claim 5, characterized in that The single well configuration interface classification includes eight-level interface, seven-level interface, six-level interface, five-level interface, and four-level interface; Among them, the interface type corresponding to the eighth-level interface is the third-level sequence interface; the interface type corresponding to the seventh-level interface is the fourth-level sequence interface; the interface type corresponding to the sixth-level interface is the different microfacies combination interface; the interface type corresponding to the fifth-level interface is the fifth-level configuration envelope; the interface type corresponding to the fourth-level interface is a single tidal channel and a single-period beach interface.

7. A device for characterizing carbonate rock sedimentary configuration, characterized in that: include: A sedimentary structure scale determination module is used to determine the carbonate rock sedimentary structure scale according to production requirements; The sedimentary configuration scale characterization module is used to determine the characterization content and characterization means corresponding to the sedimentary configuration scale, and characterize the sedimentary configuration scale based on the characterization content and characterization means to generate an analysis result of the carbonate rock sedimentary configuration.

8. The device according to claim 7, characterized in that The sedimentary architecture scales include platform scale, reservoir scale, and well group scale; Accordingly, the sedimentary configuration scale characterization module is specifically used for: The characterization contents corresponding to the platform scale are the division of the sequence stratigraphic framework, the types of each sequence platform, the properties of the high-energy phase belt, and the migration law of the high-energy phase belt; The characterization contents corresponding to the reservoir scale are determination of the platform location of the reservoir, division of the high-frequency sequence stratigraphic framework, identification and comparison of low-energy facies, and superposition characteristics and comparison of high-energy microfacies; The characterization contents corresponding to the well group scale are determination of the sedimentary environment, platform location and reservoir location of the well group, design of the grid profile within the well group, identification of single well configuration interface, comparison of inter-well configuration interface, determination of inter-well configuration unit boundary, and combination relationship of inter-well configuration units.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory in communication with 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 to enable the at least one processor to perform the method for characterizing carbonate rock depositional configurations according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the method for characterizing carbonate rock depositional configuration according to any one of claims 1 to 6 when executed by a processor.

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