Method and device for determining position of thin sand body reservoir, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a thin sand body reservoir position determination method and device, electronic equipment and a storage medium. The method comprises the following steps: determining at least two ultra-short-term cycles of an area to be explored and horizon data of the at least two ultra-short-term cycles; according to the horizon data of the ultra-short-term cycle and the paleo-water flow direction, determining a paleo-river plane distribution diagram of the to-be-explored area; according to the horizon data of the at least two ultra-short-term cycles, determining a thin sand body prediction plane distribution diagram of the to-be-explored area by adopting a seismic inversion technology; and superposing the paleochannel plane distribution diagram and the thin sand body prediction plane distribution diagram, and determining the position of the thin sand body reservoir. By adopting the technical scheme of the embodiment of the invention, the horizon data, the paleochannel plane distribution diagram and the thin sand body prediction plane distribution diagram are sequentially determined through a step-by-step constraint thought, and finally the position of the thin sand body reservoir is obtained. The multiplicity of earthquake prediction is reduced, and the accuracy of determining the position of the thin sand body reservoir is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of oil reservoir prediction, and in particular to a method, device, electronic device and storage medium for determining the position of a thin sand body reservoir. Background Art

[0002] Regarding the study of thin layers, oil groups and geophysicists in my country and Western developed countries have been challenging this complex scientific proposition theoretically. Although some progress has been made in the past 30 years, it still cannot meet the requirements for accurate prediction of thin sand bodies.

[0003] The thickness of a thin sand body with a single layer thickness less than 1 / 4 wavelength is already less than the traditional seismic vertical resolution. According to current seismic data conditions, the thickness of a sand body of 20-30m is the limit of seismic exploration resolution. However, the thickness of thin sand bodies is generally lower than this limit, especially in the western region where the main frequency of seismic data is low and the frequency band is narrow. The use of seismic data to predict 2-4m thin sand bodies has strong multi-solution and is difficult. Summary of the invention

[0004] The embodiments of the present invention provide a method, device, electronic device and storage medium for determining the position of a thin sand body reservoir, so as to reduce the multi-solution of thin sand body prediction and improve the accuracy of determining the position of a thin sand body reservoir.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining a location of a thin sand body reservoir, comprising:

[0006] Determine at least two ultra-short cycles in the area to be explored and stratigraphic data of the at least two ultra-short cycles; wherein the area to be explored includes thin sand bodies and ancient river channels;

[0007] Determine the plan distribution map of the ancient river channel in the area to be explored based on the stratigraphic data of the ultra-short-term cycle and the direction of the ancient water flow; wherein the bottom of the ancient river channel includes a thin sand body;

[0008] Determine the predicted planar distribution map of the thin sand bodies in the area to be explored by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles;

[0009] The plan distribution map of the ancient river channel is superimposed on the plan distribution map of the thin sand body prediction to determine the location of the thin sand body reservoir.

[0010] In a second aspect, an embodiment of the present invention further provides a device for determining a thin sand reservoir position, comprising:

[0011] An information acquisition module, used to determine at least two ultra-short cycles in the area to be explored and the stratigraphic data of the at least two ultra-short cycles; wherein the area to be explored includes thin sand bodies and ancient river channels;

[0012] A paleo-river channel plane distribution map determination module is used to determine the paleo-river channel plane distribution map of the to-be-explored area based on the stratigraphic data of the ultra-short-term cycle and the paleo-current direction; wherein the bottom of the paleo-river channel includes a thin sand body;

[0013] A thin sand body prediction plane distribution map determination module is used to determine the thin sand body prediction plane distribution map of the to-be-explored area by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles;

[0014] The thin sand body reservoir position determination module is used to superimpose the ancient river channel plane distribution map with the thin sand body prediction plane distribution map to determine the thin sand body reservoir position.

[0015] In a third aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0016] one or more processors;

[0017] A storage device for storing one or more programs;

[0018] When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the location of a thin sand body reservoir as described in any embodiment of the present invention.

[0019] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the location of a thin sand body reservoir as described in any embodiment of the present invention.

[0020] The embodiment of the present invention provides a method, device, electronic device and storage medium for determining the position of a thin sand body reservoir, by determining at least two ultra-short term cycles in an area to be explored and the stratigraphic data of the at least two ultra-short term cycles; wherein the area to be explored includes thin sand bodies and ancient river channels; based on the stratigraphic data of the ultra-short term cycles and the direction of ancient water flow, a plane distribution map of the ancient river channel in the area to be explored is determined; wherein the bottom of the ancient river channel includes a thin sand body; based on the stratigraphic data of the at least two ultra-short term cycles, a predicted plane distribution map of the thin sand bodies in the area to be explored is determined using seismic inversion technology; the plane distribution map of the ancient river channel is superimposed on the predicted plane distribution map of the thin sand bodies to determine the position of the thin sand body reservoir. The technical solution of the embodiment of the present invention is adopted. Through the idea of ​​step-by-step constraints, cycle division is performed on the basis of the geological model constraints of the area to be explored to determine the stratigraphic data; paleo-geomorphology restoration is performed on the basis of cycle constraints to determine the plane distribution map of the paleo-river channel; paleo-river channel is depicted on the basis of paleo-geomorphology constraints, and seismic inversion is performed on the basis of the river channel constraints to determine the plane distribution map of the thin sand body prediction; finally, a relatively accurate thin sand body reservoir position is obtained based on the plane distribution map of the paleo-river channel and the plane distribution map of the thin sand body prediction. The multi-solution of seismic prediction is reduced, and the accuracy of determining the position of the thin sand body reservoir is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts. In the drawings:

[0022] Figure 1 is a flow chart of a method for determining the location of a thin sand body reservoir provided in an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of a thin sand body comprehensive prediction process provided in an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a sand body geological model provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a paleochannel binary structure geological model provided in Example 2 of the present invention;

[0026] Figure 5 It is an ultra-short-term cycle division and seismic sequence profile provided in an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of paleo-geomorphology restoration and paleo-river channel distribution range provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of a colored inversion plane provided in an embodiment of the present invention;

[0029] Figure 8 is a schematic diagram of a frequency division inversion plane provided in an embodiment of the present invention;

[0030] Fig. 9 It is a schematic diagram of the plane distribution range of a thin sand body provided in an embodiment of the present invention;

[0031] Fig.10 It is a schematic diagram of a drilling cross section at a thin sand reservoir location provided in an embodiment of the present invention;

[0032] Fig.11 It is a structural schematic diagram of a thin sand reservoir position determination device provided in an embodiment of the present invention;

[0033] Fig.12 It is a structural schematic diagram of an electronic device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0036] Among them, the acquisition, storage, use and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations.

[0037] Figure 1 This is a flow chart of a method for determining the position of a thin sand body reservoir provided in an embodiment of the present invention. This embodiment is applicable to the case of determining the position of a thin sand body reservoir. The method of this embodiment can be executed by a thin sand body reservoir position determination device, which can be implemented in hardware and / or software. The device can be configured in a server for determining the position of a thin sand body reservoir. The method specifically includes the following steps:

[0038] S110, determining at least two ultra-short term cycles in the area to be explored and the stratigraphic data of the at least two ultra-short term cycles.

[0039] The area to be explored may refer to an area where thin sand bodies are developed and have sufficient sand bodies, and the area to be explored includes but is not limited to thin sand bodies and ancient river channels. For example, the area to be explored may be an area where thin sand bodies are developed in the delta front subfacies, and the underwater distributary channel microfacies provides sufficient sand bodies.

[0040] A short-term cycle refers to a smaller genetic stratigraphic unit that can be identified based on actual data such as field profile outcrops, drill cores or logging curves. It is generally composed of the superposition of several ultra-short-term cyclic sequences with similar structures and lithological combinations.

[0041] The stratigraphic data may refer to stratigraphic data at a specific position in a stratigraphic sequence, and the stratigraphic data include but are not limited to top layer data of ultra-short term cycles and stratigraphic data.

[0042] As an optional but non-limiting implementation, the step of determining at least two ultra-short term cycles of the area to be explored includes but is not limited to steps A1-A2:

[0043] Step A1: Establishing a sand body geological model of the area to be explored; wherein the sand body geological model of the area to be explored includes a paleo-river channel geological model and a sand body geological model.

[0044] Among them, see Figure 2 When predicting thin sand bodies, since thin sand bodies often appear at the bottom of a river channel, the distribution of the ancient river channel is determined by establishing a geological model and interpreting geological data, thereby determining the location of the thin sand body. The geological model may refer to a sand body geological model of the area to be explored, and the sand body geological model of the area to be explored includes an ancient river channel geological model and a sand body geological model.

[0045] Among them, Figure 3 The sand body geological model is shown in FIG. 1 , which takes the Jurassic Sangonghe Formation in the Mahu Sag of the Junggar Basin as an example. The sand body geological model includes a well comparison map, which indicates the development location of the sand body. Figure 4 The figure shows a binary structural geological model of an ancient river channel, indicating that where there is an ancient river channel, there is sand, showing a shift in thinking from predicting thin sand bodies to predicting ancient river channels, and broadening the vertical resolution of seismic. A 2-4m thin sand body cannot be identified by seismic, but if it is extended into an ancient river channel sand group, a 30-60m ancient river channel can be easily and accurately identified, and the ancient river channel corresponds to a thin sand body.

[0046] Step A2: According to the sand body geological model of the area to be explored, the area to be explored is divided into ultra-short term cycles to obtain at least two ultra-short term cycles.

[0047] Under the constraints of the paleo-river channel geological model and the sand body geological model, the ultra-short-term cycle division of the exploration area is carried out by combining well and seismic data. Figure 5 , the whole area to be explored is a short-term cycle, which is further divided into three ultra-short-term cycles, i.e. three parasequences. Each ultra-short-term cycle corresponds to a period of ancient river channel, indicating that three periods of river channels are developed in the area to be explored, corresponding to three periods of favorable thin sand bodies. Figure 5 It can be seen that the ultra-short-term cycle includes J1S3 1 、J1S3 2 and J1S3 3 .

[0048] As an optional but non-limiting implementation, the determining of the horizon data of the at least two ultra-short term cycles includes but is not limited to steps B1-B2:

[0049] Step B1: Acquire drilling data of the area to be explored, wherein the drilling data includes the depth of each formation in the area to be explored.

[0050] Step B2: Determine the stratigraphic data of the at least two ultra-short-term cycles based on the drilling data and high-resolution sequence stratigraphic interpretation technology; the stratigraphic data include top layer depth data and bottom layer depth data of the ultra-short-term cycles.

[0051] Among them, taking ultra-short-term cycles as units, the top and bottom interfaces of the three-phase ancient river channels can be easily and accurately identified at the vertical resolution of the seismic. Based on the high-resolution sequence stratigraphic interpretation technology, the stratigraphic data of the three-phase river channels can be obtained by tracing the stratigraphic positions. For example, the top and bottom depth data of the ancient river channel are already available in the drilling data. If this depth data is calibrated into the seismic data body, it will correspond to a certain phase axis. By tracing along the phase axis, the stratigraphic data of the at least two ultra-short-term cycles can be obtained.

[0052] S120, determining a plan distribution map of the ancient river channel in the area to be explored based on the stratigraphic data of the ultra-short-term cycle and the direction of the ancient water flow.

[0053] Among them, the bottom of the ancient river channel includes thin sand bodies; with the flow of ancient water, the sand bodies are also moving, and most of the sand bodies are deposited at the bottom of the ancient river channel to form thin sand bodies. Under the constraints of ultra-short-term cycles, based on high-resolution sequence stratigraphic interpretation, the ancient landforms of the sedimentary period are restored; under the constraints of the ancient landforms of the sedimentary period, with the help of the ancient water flow discrimination method of stratum dip, the ancient river channel is finely interpreted, and finally the planar distribution of the ancient river channel is obtained.

[0054] As an optional but non-limiting implementation, determining the paleo-river channel plan distribution map of the area to be explored based on the stratigraphic data of the ultra-short-term cycle and the paleo-flow direction includes but is not limited to steps C1-C3:

[0055] Step C1: restore the paleo-geomorphology of the area to be explored based on the stratigraphic data of the ultra-short-term cycle, and determine the paleo-geomorphology map of the area to be explored during the sedimentary period.

[0056] Among them, paleogeography restoration is a routine operation in the oil industry, that is, the thickness obtained by subtracting the depth data of two layers represents the paleogeography of the layer. For example, the top and bottom depth data of the Sansha Formation have been obtained, and then the thickness is obtained by subtracting the two layers, which is the paleogeography of the Sansha Formation. The thin thickness represents that the stratum was higher when it was deposited, and the thick thickness represents that the stratum was lower when it was deposited. The water flows in low-lying areas and does not cross mountains and ridges.

[0057] Step C2: Determine the formation dip angle based on the drilling data, and determine the paleo-flow direction based on the formation dip angle.

[0058] Among them, using the formation dip to determine the direction of paleo-water flow is a common technology in the oil industry. It is measured using dip logging, and each depth will have corresponding dip logging data, which can be used to determine the direction of paleo-water flow in the formation at the corresponding point.

[0059] Step C3: Determine the plan distribution map of the ancient river channel in the area to be explored based on the ancient landform map and ancient water flow direction of the area to be explored during the sedimentation period.

[0060] Among them, based on the paleo-geomorphology of the sedimentary period, combined with the drilling data of the area to be explored, the accuracy of the paleo-geomorphology map is confirmed. Figure 6 As shown in the figure, the low-lying areas indicate that the water body is deeper, which may be the area where the river flows; at the same time, the direction of the ancient water flow is finely depicted with the help of the formation dip angle paleoflow identification method. The formation dip angle logging data contains rich geological information and has a high accuracy in judging the paleoflow at a single well point. Combined with the formation dip angle logging data of the drilled wells and the well logging information of the drilled wells, the paleo-geomorphology of the sedimentary period was finely interpreted, and finally the planar distribution of the ancient river channel was obtained.

[0061] S130. Determine a predicted planar distribution map of thin sand bodies in the area to be explored by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short term cycles.

[0062] Among them, under the constraint of the distribution of ancient river channels, the seismic inversion technology is used to predict the thin sand body. The seismic inversion technology can refer to the process of imaging the spatial structure and physical properties of underground rock formations using seismic data from surface seismic observations, with known geological laws and drilling logging data as constraints, that is, converting conventional interface-type reflection seismic profiles into rock formation-type profiles, directly connecting and comparing with drilling layers, and making lateral predictions of reservoirs using rock formations as units. In the embodiment of the present invention, the thin sand body in the area to be explored is predicted by seismic inversion technology.

[0063] As an optional but non-limiting implementation, the predicted planar distribution map of the thin sand bodies in the area to be explored is determined by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles, including but not limited to steps D1-D3:

[0064] Step D1: Based on the stratigraphic data of the at least two ultra-short term cycles, a colored inversion technique is used to determine a predicted planar distribution map of the first thin sand body in the area to be explored.

[0065] Step D2: Based on the stratigraphic data of the at least two ultra-short term cycles, a frequency division inversion technique is used to determine a predicted planar distribution map of the second thin sand body in the area to be explored.

[0066] Step D3: Determine the thin sand body prediction plane distribution map of the area to be explored based on the first thin sand body prediction plane distribution map and the second thin sand body prediction plane distribution map.

[0067] Among them, based on the stratigraphic data of at least two ultra-short-term cycle groups, the seismic inversion technology is used to predict the thin sand reservoir. This work is an inversion study of the ultra-short-term cycles that have been divided, which reduces the multi-solution of the prediction to a certain extent. At the same time, Figure 7 The colored inversion shown has obvious advantages in the area with few wells, and Figure 8 The frequency division inversion shown has a good effect on the prediction of thin interlayers. Therefore, the thin sand bodies obtained by seismic inversion technology have a certain reference value. Moreover, under the constraints of fine paleo-river channels, the sand body interpretation is highly operable and the sand body distribution is well comparable.

[0068] S140, superimposing the ancient river channel plane distribution map and the thin sand body prediction plane distribution map to determine the location of the thin sand body reservoir.

[0069] Among them, the distribution range of thin sand body reservoirs can be obtained by mutually verifying and superimposing the ancient river channel plane distribution map and the thin sand body predicted plane distribution map.

[0070] As an optional but non-limiting implementation, the above-mentioned superimposing the paleochannel plane distribution map with the thin sand body prediction plane distribution map to determine the thin sand body reservoir position includes but is not limited to steps E1-E3:

[0071] Step E1: Determine the plane distribution range of the thin sand body based on the plane distribution map of the ancient river channel and the predicted plane distribution map of the thin sand body.

[0072] Among them, Fig. 9 As shown, the distribution range of the thin sand body on the plane is obtained based on the ancient river channel plane distribution map and the thin sand body prediction plane distribution map. The thin sand body is mainly distributed in AH013 well, A18 well, M30 well and M26 well.

[0073] Step E2: Determine the vertical distribution range of the thin sand body based on the stratigraphic data of the at least two ultra-short term cycles.

[0074] Among them, based on the stratigraphic data of at least two ultra-short-term cycles, the vertical distribution range of the thin sand body in Well AH013, Well A18, Well M30 and Well M26 is determined.

[0075] Step E3: Determine the location of the thin sand body reservoir according to the planar distribution range and vertical distribution range of the thin sand body.

[0076] like Fig.10 As shown, the location of the thin sand reservoir is determined according to the plane distribution range and vertical distribution range of the thin sand body. The thin sand body may be a thin sand body at 1855-1865 meters in the AH013 well, a thin sand body at 1910-1920 meters in the 8 well, a thin sand body at 1900-1910 meters in the M30 well, and a thin sand body at 1870-1880 meters in the M26 well.

[0077] An embodiment of the present invention provides a method for determining the position of a thin sand body reservoir, by determining at least two ultra-short term cycles in an area to be explored and stratigraphic data of the at least two ultra-short term cycles; wherein the area to be explored includes thin sand bodies and ancient river channels; based on the stratigraphic data of the ultra-short term cycles and the direction of ancient water flow, a plane distribution map of the ancient river channel in the area to be explored is determined; wherein the bottom of the ancient river channel includes a thin sand body; based on the stratigraphic data of the at least two ultra-short term cycles, a predicted plane distribution map of the thin sand bodies in the area to be explored is determined using seismic inversion technology; the plane distribution map of the ancient river channel is superimposed on the predicted plane distribution map of the thin sand bodies to determine the position of the thin sand body reservoir. The technical solution of the embodiment of the present invention is adopted. Through the idea of ​​step-by-step constraints, cycle division is performed on the basis of the geological model constraints of the area to be explored to determine the stratigraphic data; paleo-geomorphology restoration is performed on the basis of cycle constraints to determine the plane distribution map of the paleo-river channel; paleo-river channel is depicted on the basis of paleo-geomorphology constraints, and seismic inversion is performed on the basis of the river channel constraints to determine the plane distribution map of the thin sand body prediction; finally, a relatively accurate thin sand body reservoir position is obtained based on the plane distribution map of the paleo-river channel and the plane distribution map of the thin sand body prediction. The multi-solution of seismic prediction is reduced, and the accuracy of determining the position of the thin sand body reservoir is improved.

[0078] Fig.11 1 is a schematic diagram of a thin sand body reservoir position determination device provided in an embodiment of the present invention, the device comprising: an information acquisition module 1110, a paleochannel plane distribution map determination module 1120, a thin sand body prediction plane distribution map determination module 1130 and a thin sand body reservoir position determination module 1140; wherein,

[0079] The information acquisition module 1110 is used to determine at least two ultra-short-term cycles in the area to be explored and the stratigraphic data of the at least two ultra-short-term cycles; wherein the area to be explored includes thin sand bodies and ancient river channels;

[0080] The paleo-river channel plane distribution map determining module 1120 is used to determine the paleo-river channel plane distribution map of the to-be-explored area according to the stratigraphic data of the ultra-short-term cycle and the paleo-current direction; wherein the bottom of the paleo-river channel includes a thin sand body;

[0081] A thin sand body prediction plane distribution map determination module 1130 is used to determine the thin sand body prediction plane distribution map of the to-be-explored area by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short term cycles;

[0082] The thin sand body reservoir position determination module 1140 is used to superimpose the ancient river channel plane distribution map with the thin sand body prediction plane distribution map to determine the thin sand body reservoir position.

[0083] Based on the above embodiment, optionally, the information acquisition module includes:

[0084] Establishing a sand body geological model of the area to be explored; wherein the sand body geological model of the area to be explored includes a paleo-river channel geological model and a sand body geological model;

[0085] According to the sand body geological model of the area to be explored, the area to be explored is divided into ultra-short term cycles to obtain at least two ultra-short term cycles.

[0086] Based on the above embodiment, optionally, the information acquisition module further includes:

[0087] Acquire drilling data of the area to be explored, wherein the drilling data includes the depth of each formation in the area to be explored;

[0088] The stratigraphic data of the at least two ultra-short-term cycles are determined based on the drilling data and high-resolution sequence stratigraphic interpretation technology; the stratigraphic data include top layer depth data and bottom layer depth data of the ultra-short-term cycles.

[0089] Based on the above embodiment, optionally, the paleo-river channel plane distribution map determination module includes:

[0090] Performing paleo-geomorphological restoration on the area to be explored based on the stratigraphic data of the ultra-short-term cycle, and determining the paleo-geomorphological map of the area to be explored during the sedimentary period;

[0091] Determine the formation dip angle based on drilling data, and determine the paleocurrent direction based on the formation dip angle;

[0092] Based on the paleo-geomorphology map and paleo-flow direction of the area to be explored during the sedimentation period, the plan distribution map of the paleo-river channel in the area to be explored is determined.

[0093] Based on the above embodiment, optionally, the thin sand body prediction plane distribution map determination module includes:

[0094] Determine the predicted plane distribution map of the first thin sand body in the area to be explored by using the colored inversion technology according to the stratigraphic data of the at least two ultra-short-term cycles;

[0095] Determine the predicted plane distribution map of the second thin sand body in the area to be explored by using the frequency division inversion technology according to the stratigraphic data of the at least two ultra-short-term cycles;

[0096] The thin sand body prediction plane distribution map of the area to be explored is determined based on the first thin sand body prediction plane distribution map and the second thin sand body prediction plane distribution map.

[0097] Based on the above embodiment, optionally, the thin sand reservoir position determination module includes:

[0098] Determine the plane distribution range of thin sand bodies based on the plane distribution map of ancient river channels and the predicted plane distribution map of thin sand bodies;

[0099] Determining the vertical distribution range of the thin sand body based on the stratigraphic data of the at least two ultra-short term cycles;

[0100] The location of the thin sand body reservoir is determined based on the planar distribution range and vertical distribution range of the thin sand body.

[0101] The thin sand body reservoir position determination device provided in the embodiment of the present invention can execute the thin sand body reservoir position determination method provided in any of the above-mentioned embodiments of the present invention, and has the corresponding functions and beneficial effects of executing the thin sand body reservoir position determination method. For detailed process, please refer to the relevant operations of the thin sand body reservoir position determination method in the above-mentioned embodiments.

[0102] Fig.12 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The electronic device 10 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 may 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.

[0103] 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.

[0104] 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.

[0105] 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 special 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 determining the location of a thin sand body reservoir.

[0106] In some embodiments, the thin sand body reservoir location determination method 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 thin sand body reservoir location determination method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the thin sand body reservoir location determination method in any other appropriate manner (for example, by means of firmware).

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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).

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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 determining the location of a thin sand reservoir, characterized in that: The method comprises: Determine at least two ultra-short cycles in the area to be explored and stratigraphic data of the at least two ultra-short cycles; wherein the area to be explored includes thin sand bodies and ancient river channels; Determine the plan distribution map of the ancient river channel in the area to be explored based on the stratigraphic data of the ultra-short-term cycle and the direction of the ancient water flow; wherein the bottom of the ancient river channel includes a thin sand body; Determine the predicted planar distribution map of the thin sand bodies in the area to be explored by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles; The plan distribution map of the ancient river channel is superimposed on the plan distribution map of the thin sand body prediction to determine the location of the thin sand body reservoir.

2. The method according to claim 1, characterized in that The step of determining at least two ultra-short term cycles in the area to be explored includes: Establishing a sand body geological model of the area to be explored; wherein the sand body geological model of the area to be explored includes a paleo-river channel geological model and a sand body geological model; According to the sand body geological model of the area to be explored, the area to be explored is divided into ultra-short term cycles to obtain at least two ultra-short term cycles.

3. The method according to claim 1, characterized in that Determining the horizon data of the at least two ultra-short term cycles comprises: Acquire drilling data of the area to be explored, wherein the drilling data includes the depth of each formation in the area to be explored; The stratigraphic data of the at least two ultra-short term cycles are determined based on the drilling data and high-resolution sequence stratigraphic interpretation technology; the stratigraphic data include top layer depth data and bottom layer depth data of the ultra-short term cycles.

4. The method according to claim 1, characterized in that: Determining the plan distribution map of the ancient river channel in the area to be explored based on the stratigraphic data of the ultra-short-term cycle and the direction of the ancient water flow includes: Performing paleo-geomorphological restoration on the area to be explored based on the stratigraphic data of the ultra-short-term cycle, and determining the paleo-geomorphological map of the area to be explored during the sedimentary period; Determine the formation dip angle based on drilling data, and determine the paleocurrent direction based on the formation dip angle; Based on the paleo-geomorphology map and paleo-flow direction of the area to be explored during the sedimentation period, the plan distribution map of the paleo-river channel in the area to be explored is determined.

5. The method according to claim 1, characterized in that The method of determining the predicted planar distribution map of the thin sand bodies in the area to be explored by using the seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles comprises: Determine the predicted plane distribution map of the first thin sand body in the area to be explored by using the colored inversion technology according to the stratigraphic data of the at least two ultra-short-term cycles; Determine the predicted plane distribution map of the second thin sand body in the area to be explored by using the frequency division inversion technology according to the stratigraphic data of the at least two ultra-short-term cycles; The thin sand body prediction plane distribution map of the area to be explored is determined based on the first thin sand body prediction plane distribution map and the second thin sand body prediction plane distribution map.

6. The method according to claim 1, characterized in that The method of superimposing the ancient river channel plane distribution map with the thin sand body prediction plane distribution map to determine the thin sand body reservoir position includes: Determine the plane distribution range of thin sand bodies based on the plane distribution map of ancient river channels and the predicted plane distribution map of thin sand bodies; Determining the vertical distribution range of the thin sand body based on the stratigraphic data of the at least two ultra-short term cycles; The location of the thin sand body reservoir is determined based on the planar distribution range and vertical distribution range of the thin sand body.

7. A device for determining the position of a thin sand reservoir, characterized in that: The device comprises: An information acquisition module, used to determine at least two ultra-short cycles in the area to be explored and the stratigraphic data of the at least two ultra-short cycles; wherein the area to be explored includes thin sand bodies and ancient river channels; A paleo-river channel plane distribution map determination module is used to determine the paleo-river channel plane distribution map of the to-be-explored area based on the stratigraphic data of the ultra-short-term cycle and the paleo-current direction; wherein the bottom of the paleo-river channel includes a thin sand body; A thin sand body prediction plane distribution map determination module is used to determine the thin sand body prediction plane distribution map of the to-be-explored area by using seismic inversion technology based on the stratigraphic data of the at least two ultra-short-term cycles; The thin sand body reservoir position determination module is used to superimpose the ancient river channel plane distribution map with the thin sand body prediction plane distribution map to determine the thin sand body reservoir position.

8. The device according to claim 7, characterized in that The information acquisition module comprises: Establishing a sand body geological model of the area to be explored; wherein the sand body geological model of the area to be explored includes a paleo-river channel geological model and a sand body geological model; According to the sand body geological model of the area to be explored, the area to be explored is divided into ultra-short term cycles to obtain at least two ultra-short term cycles.

9. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the location of a thin sand body reservoir as described in any one of claims 1-6.

10. A storage medium containing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, the computer executable instructions are used to perform the method for determining the location of a thin sand body reservoir as claimed in any one of claims 1 to 6.

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