CN115903047B - Method and device for identifying sea carbonate beach reservoir - Google Patents
Method and device for identifying sea carbonate beach reservoir Download PDFInfo
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- CN115903047B CN115903047B CN202211686920.4A CN202211686920A CN115903047B CN 115903047 B CN115903047 B CN 115903047B CN 202211686920 A CN202211686920 A CN 202211686920A CN 115903047 B CN115903047 B CN 115903047B
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Abstract
The embodiment of the application provides a method and a device for identifying a sea carbonate beach reservoir, wherein the method comprises the following steps: establishing a stratum lattice of the three-level sequence based on the top-bottom interface of the three-level sequence; determining controlled factors of a three-level sequence in the stratigraphic framework by comparing the global sea level change with the relative change of a sedimentary water body in the sedimentary stratigraphic formation process; based on the controlled factors, the development position of the beach-phase reservoir in the three-level sequence is determined, so that the problem that the sea-phase carbonate beach-phase reservoir in the prior art is difficult to identify can be solved.
Description
Technical Field
The application relates to the technical field of geology, in particular to a method and a device for identifying a sea carbonate beach reservoir.
Background
The sea carbonate beach phase reservoir is relatively thin and the characteristics of the sea carbonate beach phase reservoir on the logging curve are not obvious, so that the problem that the sea carbonate beach phase reservoir is relatively difficult to identify is caused.
Thus, there is an urgent need for a method of identifying sea carbonate beach reservoirs.
Disclosure of Invention
The embodiment of the application aims to provide a method and a device for identifying a sea carbonate beach-phase reservoir, so as to solve the problem that the sea carbonate beach-phase reservoir is difficult to identify in the prior art.
In a first aspect, embodiments of the present application provide a method of identifying a sea carbonate beach phase reservoir, the method comprising: establishing a stratum lattice of the three-level sequence based on the top-bottom interface of the three-level sequence; determining controlled factors of a three-level sequence in the stratigraphic framework by comparing the global sea level change with the relative change of a sedimentary water body in the sedimentary stratigraphic formation process; based on the controlled factors, the location of beach reservoir development in the tertiary sequence is determined.
Therefore, the embodiment of the application establishes the stratum grillage of the three-level layer sequence based on the top-bottom interface of the three-level layer sequence, determines the controlled factors of the three-level layer sequence by comparing the global sea level change with the relative change of the sedimentary water body in the sedimentary stratum formation process in the stratum grillage, and determines the development position of the beach reservoir in the three-level layer sequence based on the controlled factors, thereby solving the problem that the sea-phase carbonate beach reservoir is difficult to identify in the prior art, namely achieving the technical effect of accurately identifying the development position of the beach reservoir.
In one possible embodiment, the controlled factor is global sea level variation; wherein determining the location of beach reservoir development in the tertiary layer sequence based on the controlled factors comprises: filter analysis of a specified log for reflecting changes in relative water 5 volume to decompose the specified log into a plurality of different profiles
A loop curve of the frequency, and taking the loop curve with the largest amplitude as a target loop curve; dividing the three-level sequence into a plurality of four-level sequences or a plurality of five-level sequences based on the target gyratory curve; the location of beach reservoir development is determined based on the plurality of four-level sequences or the plurality of five-level sequences.
In one possible embodiment, determining the location of 0 beach phase reservoir development based on a plurality of four-level sequences or a plurality of five-level sequences comprises: determining whether the amplitude of the current appointed sequence is larger than or equal to a preset amplitude; the current appointed layer sequence is a current four-level layer sequence or a current five-level layer sequence; and if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining the top interface of the current appointed sequence as the development position of the beach reservoir.
In one possible embodiment, the controlled factor is the dual effect impact of regional construction motion and global sea level variation 5; wherein determining the location of beach reservoir development in the tertiary layer sequence based on the controlled factors comprises: performing filtering analysis on a designated logging curve for reflecting the change of the relative water body so as to decompose the designated logging curve into a plurality of different-frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; background curve and target curl to be used for reflecting regional construction motion
Superposing the lines to obtain a superposed curve; and determining the position of the shallowest relative water depth 0 by using the superimposed curve, and taking the position of the shallowest relative water depth as the position of beach reservoir development.
In a second aspect, embodiments of the present application provide an apparatus for identifying a sea carbonate beach phase reservoir, the apparatus comprising: the building module is used for building a stratum grid of the three-level layer sequence based on the top-bottom interface of the three-level layer sequence; a first determining module for comparing the global in the stratum grid
Determining 5 controlled factors of a three-level layer sequence according to the sea level change and the relative change of a sedimentary water body in the sedimentary stratum formation process; and the second determining module is used for determining the development position of the beach reservoir in the three-level layer sequence based on the controlled factors.
In one possible embodiment, the controlled factor is global sea level variation; the second determining module is specifically configured to: performing filtering analysis on a designated logging curve for reflecting the change of the relative water body so as to decompose the designated logging curve into a plurality of different-frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; dividing the three-level sequence into a plurality of four-level sequences or a plurality of five-level sequences based on the target gyratory curve; the location of beach reservoir development is determined based on the plurality of four-level sequences or the plurality of five-level sequences.
In a possible embodiment, the second determining module is specifically configured to: determining whether the amplitude of the current appointed sequence is larger than or equal to a preset amplitude; the current appointed layer sequence is a current four-level layer sequence or a current five-level layer sequence; and if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining the top interface of the current appointed sequence as the development position of the beach reservoir.
In one possible embodiment, the controlled factor is the dual-acting effect of regional construction motion and global sea level variation; the second determining module is specifically configured to: performing filtering analysis on a designated logging curve for reflecting the change of the relative water body so as to decompose the designated logging curve into a plurality of different-frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; superposing a background curve for reflecting the regional construction movement and a target gyratory curve to obtain a superposed curve; and determining the position with the shallowest relative water depth by using the superimposed curves, and taking the position with the shallowest relative water depth as the position for beach reservoir development.
In a third aspect, embodiments of the present application provide a storage medium having stored thereon a computer program which, when executed by a processor, performs the method of the first aspect or any alternative implementation of the first aspect.
In a fourth aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory in communication via the bus when the electronic device is running, the machine-readable instructions when executed by the processor performing the method of the first aspect or any alternative implementation of the first aspect.
In a fifth aspect, the present application provides a computer program product which, when run on a computer, causes the computer to perform the method of the first aspect or any of the possible implementations of the first aspect.
In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a flow chart of a method of identifying a sea-phase carbonate beach reservoir provided by an embodiment of the present application;
fig. 2 shows a schematic diagram of an apparatus for identifying a sea carbonate beach reservoir according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the invention, are within the scope of the invention.
Aiming at the characteristics of multiple sets of development of a seaphase carbonate table edge beach and an intratable beach reservoir in one set of stratum, no good identification method exists all the time, and great difficulty is brought to oil and gas exploration and development and resource evaluation.
Based on the above, the embodiment of the application provides a scheme for identifying a sea-phase carbonate beach-phase reservoir, by establishing a stratum framework of a three-level sequence based on a top-bottom interface of the three-level sequence, determining controlled factors of the three-level sequence in the stratum framework by comparing global sea level changes with relative changes of sedimentary water bodies in a sedimentary stratum formation process, and determining the development position of the beach-phase reservoir in the three-level sequence based on the controlled factors, the technical effect of accurately identifying the development position of the beach-phase reservoir can be achieved.
Referring to fig. 1, fig. 1 shows a flowchart of a method for identifying a sea carbonate beach reservoir according to an embodiment of the present application. The method as shown in fig. 1 may be performed by an apparatus for identifying a sea carbonate beach phase reservoir, and the apparatus may be an apparatus for identifying a sea carbonate beach phase reservoir as shown in fig. 2. And, the specific device of the device may be set according to actual requirements, and embodiments of the present application are not limited thereto. For example, the device may be a computer, a server, or the like. Specifically, the method as shown in fig. 1 includes:
step S110, a top-bottom interface of the three-level sequence is identified according to seismic interpretation, field outcrop or drilling logging information. Wherein the top-bottom interface comprises a top interface and a bottom interface.
It should be appreciated that the specific method of identifying the top-bottom interface of the three-level sequence may be set according to actual needs based on seismic interpretation, field outcrop, or borehole logging data, and embodiments of the present application are not so limited.
Alternatively, for seismic interpretation, where a well-log combination is acquired, a three-level sequence may be plotted by looking at the reflective interface.
Alternatively, for field outages, the top-bottom interface of the formation is available, and its change in relative sea level can be determined by observing changes in lithology, i.e., can reflect the elevation of sea level. For example, it is a deep water deposited mudstone; as another example, a shallow water deposited bird's eye configuration, etc. Therefore, the water body transition can be determined by analyzing the rock, so that the three-level sequence can be identified by the superposition mode.
Step S120, based on the top-bottom interface of the three-level sequence is identified, a stratum lattice of the three-level sequence is established.
It should be understood that, based on identifying the top-bottom interface of the three-level sequence, the specific process of building the stratigraphic framework of the three-level sequence may also be set according to actual requirements, and embodiments of the present application are not limited thereto.
In step S130, in the stratigraphic framework, controlled factors of the tertiary sequence are determined by comparing the global sea level variation with the relative variation of the sedimentary water body during formation of the sedimentary strata. The controlled factors can be global sea level changes or global sea level changes and regional construction movement dual-effect influences.
Specifically, under the condition that the global sea level change can be generally reflected by the change of the all-rock carbon oxygen isotope and the relative change of a sedimentary water body in the formation process of a sedimentary stratum can be represented by a designated logging curve, the change curve of the field all-rock carbon oxygen isotope and the designated logging curve can be put together for comparison, and if the trends of the two curves are consistent, the three-level sequence is determined to be controlled by the global sea level change; if not, it is determined that the tertiary sequence is under the influence of the dual effects of global sea level changes and regional structural motion. The specified log may include a natural gamma energy spectrum Ln (Th/K) log or a natural gamma GR log, among others.
And step S140, determining the development position of the beach reservoir in the three-level layer sequence based on the controlled factors.
It should be appreciated that the specific process of determining the location of beach reservoir development in a tertiary sequence may be set according to actual needs based on controlled factors, and embodiments of the present application are not so limited.
Optionally, in the case that the controlled factor is a global sea level change, performing a filtering analysis on a designated logging curve for reflecting a relative water body change to decompose the designated logging curve into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve, and dividing the three-level layer sequence into a plurality of four-level layer sequences or a plurality of five-level layer sequences based on the target gyratory curve, and determining a beach-phase reservoir development position based on the plurality of four-level layer sequences or the plurality of five-level layer sequences.
It should be noted that if the four-level sequence control gyratory comparison is developed, only the gyratory curve of the four-level sequence is used for dividing; if the five-level sequence has a greater impact on the formation (e.g., greater productivity of the deposit), then only the five-level sequence may be used to partition to find the location of beach reservoir development. That is, in the case of determining the location of beach reservoir development, one of the four-level or five-level sequences may be selected to determine the location of beach reservoir development.
It should be appreciated that the specific process of determining the location of beach reservoir development based on a plurality of four-level sequences or a plurality of five-level sequences may be set according to actual needs, and embodiments of the present application are not limited in this regard.
Optionally, determining whether the amplitude of the currently specified sequence is greater than or equal to a preset amplitude; the current appointed layer sequence is the current four-level layer sequence or the current five-level layer sequence. And if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining the top interface of the current appointed sequence as the development position of the beach reservoir.
In order to facilitate an understanding of the embodiments of the present application, the following description is made by way of specific embodiments.
In particular, where the log has three curves, namely a slope, a time lapse and a yellow-red intersection angle, and each of the three curves has 3 convolutions, and each convolution has 2 cycles, the specified log is decomposed into a plurality of different frequency convolutions. And, the maximum amplitude gyratory curve may be considered as the target gyratory curve and the top interface of the four stages in the high-level domain may be considered as the location of beach reservoir development.
Optionally, in the case that the controlled factor is a dual effect of regional construction motion and global sea level variation, performing a filtering analysis on a specified log for reflecting the relative water body variation to decompose the specified log into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve, and overlapping a background curve for reflecting regional construction motion and the target gyratory curve to obtain an overlapped curve, and determining a position at which the relative water depth is shallowest by using the overlapped curve, and taking the position at which the relative water depth is shallowest as a position at which the beach phase reservoir develops.
In order to facilitate an understanding of the embodiments of the present application, the following description is made by way of specific embodiments.
In particular, where the log has three curves, namely a slope, a time lapse and a yellow-red intersection angle, and each of the three curves has 3 convolutions, and each convolution has 2 cycles, the specified log is decomposed into a plurality of different frequency convolutions. And, the most amplitude of the plurality of different frequency convolution curves may be taken as the target convolution curve, and the lowest frequency of the plurality of different frequency convolution curves may be taken as the background curve.
And superposing the background curve and the target gyratory curve to obtain a superposed curve. And dividing the three-level sequence into a plurality of four-level sequences or a plurality of five-level sequences based on the superimposed curves, and determining the development position of the beach reservoir based on the four-level sequences or the five-level sequences. The specific process of determining the location of the beach reservoir development based on the four-level sequences or the five-level sequences is described in the above related description, and will not be repeated here.
And step S150, determining a logging curve value corresponding to the reservoir development section by utilizing the matching relation between the actual beach reservoir development characteristics and the corresponding tuning curve. Wherein the reservoir development stage refers to the position of beach reservoir development.
In addition, the log values can be used to calculate the developmental thickness of all reservoirs. Furthermore, the deposit phase constraint is utilized, the scale of the beach reservoir development of the research area can be calculated, and a foundation is laid for oil and gas resource evaluation. The scale of the development of the beach reservoir in the research area can refer to the volume of the development of the beach reservoir in the research area.
For example, the relative thickness of the beach reservoir development segments and the area of the region (i.e., the sedimentary facies) can be used to calculate the volume of beach reservoir development in the investigation region.
Therefore, the embodiment of the application establishes the stratum framework of the three-level layer sequence based on the top-bottom interface of the three-level layer sequence, determines the controlled factors of the three-level layer sequence by comparing the global sea level change with the relative change of the sedimentary water body in the sedimentary stratum formation process in the stratum framework, and determines the development position of the beach reservoir in the three-level layer sequence based on the controlled factors, so that the technical effect of accurately identifying the development position of the beach reservoir can be achieved.
It should be understood that the above method of identifying a sea carbonate beach reservoir is merely exemplary and that a person skilled in the art may make various modifications according to the above method, and that the versions following such modifications are within the scope of the present application.
Referring to fig. 2, fig. 2 shows a block diagram of an apparatus 200 for identifying a sea carbonate beach reservoir according to an embodiment of the present application. It should be understood that the apparatus 200 is capable of performing the steps in the above method embodiments, and specific functions of the apparatus 200 may be referred to the above description, and detailed descriptions are omitted herein as appropriate to avoid redundancy. The device 200 includes at least one software functional module that can be stored in memory in the form of software or firmware (firmware) or cured in an Operating System (OS) of the device 200. Specifically, the apparatus 200 includes:
a building module 210 for building a stratigraphic framework of the three-level sequence based on identifying the top-bottom interface of the three-level sequence;
a first determining module 220 for determining controlled factors of a tertiary sequence by comparing global sea level changes with relative changes of a sedimentary water body during formation of a sedimentary formation in the stratigraphic framework;
a second determination module 230 is configured to determine a location of beach reservoir development in the tertiary sequence based on the controlled factors.
In one possible embodiment, the controlled factor is global sea level variation; the second determining module 230 is specifically configured to: performing filtering analysis on a designated logging curve for reflecting the change of the relative water body so as to decompose the designated logging curve into a plurality of different-frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; dividing the three-level sequence into a plurality of four-level sequences or a plurality of five-level sequences based on the target gyratory curve; the location of beach reservoir development is determined based on the plurality of four-level sequences or the plurality of five-level sequences.
In one possible embodiment, the second determining module 230 is specifically configured to: determining whether the amplitude of the current appointed sequence is larger than or equal to a preset amplitude; the current appointed layer sequence is a current four-level layer sequence or a current five-level layer sequence; and if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining the top interface of the current appointed sequence as the development position of the beach reservoir.
In one possible embodiment, the controlled factor is the dual-acting effect of regional construction motion and global sea level variation; the second determining module 230 is specifically configured to: performing filtering analysis on a designated logging curve for reflecting the change of the relative water body so as to decompose the designated logging curve into a plurality of different-frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; superposing a background curve for reflecting the regional construction movement and a target gyratory curve to obtain a superposed curve; and determining the position with the shallowest relative water depth by using the superimposed curves, and taking the position with the shallowest relative water depth as the position for beach reservoir development.
It will be clear to those skilled in the art that, for convenience and brevity of description, reference may be made to the corresponding procedure in the foregoing method for the specific working procedure of the apparatus described above, and this will not be repeated here.
The present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the method of the embodiments.
The present application also provides a computer program product which, when run on a computer, causes the computer to perform the method of the method embodiments.
It will be clear to those skilled in the art that, for convenience and brevity of description, reference may be made to the corresponding procedure in the foregoing method for the specific working procedure of the system described above, and this will not be repeated here.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, flow diagrams and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A method of identifying a sea carbonate beach reservoir, comprising:
establishing a stratum grid of the three-level sequence based on the top-bottom interface of the three-level sequence;
determining controlled factors of the three-level sequence in the stratigraphic framework by comparing the global sea level change with the relative change of the sedimentary water body in the sedimentary stratigraphic formation process;
determining a location of beach reservoir development in the tertiary sequence based on the controlled factors;
wherein determining the controlled factors of the tertiary sequence by comparing the global sea level variation with the relative variation of the sedimentary water body during formation of the sedimentary formation comprises:
under the condition that the global sea level change can be generally reflected by the change of all-rock carbon-oxygen isotopes and the relative change of a sedimentary water body in the formation process of a sedimentary stratum can be represented by a designated logging curve, the change curve of the field all-rock carbon-oxygen isotopes and the designated logging curve can be compared, and if the trends of the two curves are consistent, the three-level sequence is determined to be controlled by the global sea level change; if the three-level sequence is inconsistent, determining that the three-level sequence is influenced by the dual actions of global sea level change and regional structure movement;
the controlled factor is the global sea level variation;
wherein the determining a location of beach reservoir development in the tertiary sequence based on the controlled factors comprises:
performing filtering analysis on a designated logging curve for reflecting relative water body changes so as to decompose the designated logging curve into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve;
dividing the tertiary sequence into a plurality of quaternary sequences or a plurality of penta-order sequences based on the target gyratory curve;
determining a location of the beach reservoir development based on the plurality of four-level sequences or the plurality of five-level sequences;
the controlled factor is the dual-acting effect of the regional construction motion and the global sea level variation;
wherein the determining a location of beach reservoir development in the tertiary sequence based on the controlled factors comprises:
performing filtering analysis on a designated logging curve for reflecting relative water body changes so as to decompose the designated logging curve into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve;
superposing a background curve for reflecting the regional construction movement and the target rotation curve to obtain a superposed curve;
and determining the position with the shallowest relative water depth by using the superimposed curve, and taking the position with the shallowest relative water depth as the position for the beach reservoir development.
2. The method of claim 1, wherein the determining the location of the beach reservoir development based on the plurality of four-level sequences or plurality of five-level sequences comprises:
determining whether the amplitude of the current appointed sequence is larger than or equal to a preset amplitude; the current appointed layer sequence is a current four-level layer sequence or a current five-level layer sequence;
and if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining a top interface of the current appointed sequence as the development position of the beach reservoir.
3. An apparatus for identifying a sea carbonate beach reservoir, comprising:
the building module is used for building a stratum grid of the three-level layer sequence based on the top-bottom interface of the three-level layer sequence;
the first determining module is used for determining the controlled factors of the three-level sequence in the stratigraphic framework by comparing the global sea level change with the relative change of the sedimentary water body in the sedimentary stratigraphic formation process;
the second determining module is used for determining the development position of the beach reservoir in the three-level layer sequence based on the controlled factors;
the first determining module is specifically configured to: under the condition that the global sea level change can be generally reflected by the change of all-rock carbon-oxygen isotopes and the relative change of a sedimentary water body in the formation process of a sedimentary stratum can be represented by a designated logging curve, the change curve of the field all-rock carbon-oxygen isotopes and the designated logging curve can be compared, and if the trends of the two curves are consistent, the three-level sequence is determined to be controlled by the global sea level change; if the three-level sequence is inconsistent, determining that the three-level sequence is influenced by the dual actions of global sea level change and regional structure movement;
the controlled factor is the global sea level variation;
the second determining module is specifically configured to: performing filtering analysis on a designated logging curve for reflecting relative water body changes so as to decompose the designated logging curve into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; dividing the tertiary sequence into a plurality of quaternary sequences or a plurality of penta-order sequences based on the target gyratory curve; determining a location of the beach reservoir development based on the plurality of four-level sequences or the plurality of five-level sequences;
the controlled factor is the dual-acting effect of regional construction motion and the global sea level variation;
the second determining module is specifically configured to: performing filtering analysis on a designated logging curve for reflecting relative water body changes so as to decompose the designated logging curve into a plurality of different frequency gyratory curves, and taking the gyratory curve with the largest amplitude as a target gyratory curve; superposing a background curve for reflecting the regional construction movement and the target rotation curve to obtain a superposed curve; and determining the position with the shallowest relative water depth by using the superimposed curve, and taking the position with the shallowest relative water depth as the position for the beach reservoir development.
4. The apparatus according to claim 3, wherein the second determining module is specifically configured to: determining whether the amplitude of the current appointed sequence is larger than or equal to a preset amplitude; the current appointed layer sequence is a current four-level layer sequence or a current five-level layer sequence; and if the amplitude of the current appointed sequence is greater than or equal to the preset amplitude, determining a top interface of the current appointed sequence as the development position of the beach reservoir.
5. A storage medium having stored thereon a computer program, which when run by a processor performs the method of identifying a sea-phase carbonate beach phase reservoir as claimed in any one of claims 1-2.
6. An electronic device comprising a processor, a memory and a computer program stored on the memory, wherein the processor executes the computer program to implement the method of identifying a sea carbonate beach phase reservoir as claimed in any one of claims 1-2.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274859A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | Carbonate reservoir control methods |
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| CN110275210A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of recognition methods of the sedimentary micro facies model of carbonate rock high frequency sequence screen work |
| CN111665567A (en) * | 2019-03-05 | 2020-09-15 | 中国石油化工股份有限公司 | Logging site beach dam facies sand body fine prediction method |
| JP2022123078A (en) * | 2021-10-26 | 2022-08-23 | 中国科学院地質與地球物理研究所 | Method for predicting oil accumulation depth lower limit of deep and ultra-depth marine carbonate reservoir |
| CN114609675A (en) * | 2022-03-14 | 2022-06-10 | 西南石油大学 | Quantitative recovery method for carbonate rock stratum sedimentary micro-landform based on high-frequency cycle |
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