CN118030046A - Evaluation method and related equipment for thick-layer massive heterogeneous sandstone reservoir - Google Patents
Evaluation method and related equipment for thick-layer massive heterogeneous sandstone reservoir Download PDFInfo
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Abstract
The invention discloses an evaluation method and related equipment for a thick-layer massive heterogeneous sandstone reservoir, relates to the field of oil exploitation, and mainly aims to solve the problem that an evaluation standard for the thick-layer massive heterogeneous sandstone reservoir lacks a better definition method. The method comprises the following steps: under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, obtaining estimated oil yield and first actual oil yield of the target reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional trial production; acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production; and establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data. The method is used for the evaluation process of the thick-layer massive heterogeneous sandstone reservoir.
Description
Technical Field
The invention relates to the field of petroleum exploitation, in particular to an evaluation method and related equipment for a thick-layer massive heterogeneous sandstone reservoir.
Background
The thick-layer massive heterogeneous sandstone reservoir is mainly formed in a steep slope zone with a raised structure, the thickness of the sand body of the reservoir is more than 400m at the middle position of an underwater fan deposition system near the bank of gravity flow, and oil and gas display is mainly oil marks and oil spots. The porosity is mainly between 9.3% and 19.4%, and the average porosity is 14.2%; the permeability is mainly between 1.2 and 26.4mD, and the average permeability is 9.3mD, belongs to medium-low pore and low permeability reservoirs, and is a thick-layer blocky common thin oil sandstone reservoir. The method is influenced by factors such as poor reservoir pore permeation conditions, large reservoir distribution difference, high mud content and the like, and conventional logging and logging interpretation technology cannot well identify oil-containing conditions and oil-water distribution conditions of reservoirs, so that the utilization range on the reservoir plane and the utilization degree in the longitudinal direction are restricted, and the establishment of a production scheme and the adjustment of an overall development mode are influenced.
Disclosure of Invention
In view of the above problems, the present invention provides a method and related equipment for evaluating a thick-layer bulk heterogeneous sandstone reservoir, and is mainly aimed at solving the problem that the evaluation standard of the thick-layer bulk heterogeneous sandstone reservoir lacks a better defining method.
To solve at least one of the above technical problems, in a first aspect, the present invention provides a method for evaluating a thick-layer massive heterogeneous sandstone reservoir, the method comprising:
Under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, obtaining estimated oil yield and first actual oil yield of the target reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional trial production;
Acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
And establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
Alternatively to this, the method may comprise,
The first acquired data comprise logging interpretation parameters and logging interpretation parameters of the target reservoir in a conventional test production stage;
The obtaining the estimated oil yield of the target reservoir comprises the following steps:
acquiring logging interpretation parameters and logging interpretation parameters of a target reservoir in a conventional test production stage;
and determining the estimated oil production based on the logging interpretation parameters, the logging interpretation parameters and the initial evaluation criteria.
Alternatively to this, the method may comprise,
The second acquired data includes logging interpretation parameters and logging interpretation parameters of the target reservoir during the fracturing test production phase.
Optionally, the method further comprises:
Establishing a logging interpretation chart based on logging interpretation parameters of a target reservoir in a fracturing test production stage;
And building a logging interpretation chart based on logging interpretation parameters of the target reservoir in the fracturing test production stage.
Optionally, the establishing a fracturing evaluation criterion of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second collected data includes:
and establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production, the logging interpretation plate and the logging interpretation plate.
Optionally, the creating a log interpretation template based on the log interpretation parameters of the target reservoir in the fracturing test production stage includes:
Determining a logging interpretation template based on reservoir physical properties, oil content, mud content, in-situ cuttings analysis data, indoor cuttings analysis data, and gas logging data of the target reservoir.
Optionally, the creating a log interpretation template based on the log interpretation parameters of the target reservoir in the fracturing test production stage includes:
well log interpretation templates were established based on 3700 logs, nuclear magnetic logs, and conventional logs.
In a second aspect, an embodiment of the present invention further provides an evaluation device for a thick-layer massive heterogeneous sandstone reservoir, including:
the first acquisition unit is used for acquiring estimated oil yield and first actual oil yield of the target reservoir under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional test production;
The second obtaining unit is used for obtaining a second actual oil yield of the target reservoir when the difference value between the estimated oil yield and the first actual oil yield of the target reservoir is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
And the establishing unit is used for establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a computer readable storage medium comprising a stored program, wherein the steps of the above method for evaluating a thick-layer bulk heterogeneous sandstone reservoir are implemented when the program is executed by a processor.
In order to achieve the above object, according to a fourth aspect of the present invention, there is provided an electronic device including at least one processor, and at least one memory connected to the processor; the processor is used for calling the program instructions in the memory and executing the step of the evaluation method of the thick-layer massive heterogeneous sandstone reservoir.
By means of the technical scheme, the evaluation method and the related equipment for the thick-layer massive heterogeneous sandstone reservoir, provided by the invention, are used for solving the problem that an evaluation standard of the thick-layer massive heterogeneous sandstone reservoir lacks a better definition method; acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production; and establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data. In the scheme, conventional test production and fracturing test production are respectively carried out on reservoirs with different interpretation conclusions of drilled wells, estimated oil production and actual oil production of the drilled wells are compared, so that whether an evaluation standard is accurate is determined, the problematic reservoirs are identified, conventional logging project interpretation standards are quantified in an inverse mode in combination with the capacity situation after fracturing, and then the evaluation standard of the thick-layer blocky heterogeneous sandstone reservoirs is reestablished by integrating the volume fracturing test production effect and new acquisition parameters.
Correspondingly, the evaluation device, the equipment and the computer readable storage medium for the thick-layer massive heterogeneous sandstone reservoir provided by the embodiment of the invention also have the technical effects.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a schematic flow chart of an evaluation method of a thick-layer massive heterogeneous sandstone reservoir according to an embodiment of the present invention;
FIG. 2 shows a schematic block diagram of an evaluation device for thick-layer massive heterogeneous sandstone reservoirs according to an embodiment of the present invention;
Fig. 3 shows a schematic block diagram of an evaluation electronics for thick-layer bulk heterogeneous sandstone reservoirs, according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to solve the problem that an evaluation standard for a thick-layer massive heterogeneous sandstone reservoir lacks a better definition method, an embodiment of the present invention provides an evaluation method for a thick-layer massive heterogeneous sandstone reservoir, as shown in fig. 1, the method includes:
S101, under the condition that a target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, obtaining estimated oil yield and first actual oil yield of the target reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional trial production;
Illustratively, production is actually production, and it is generally possible to evaluate the production of wells or detailed exploratory wells (including pre-exploratory wells), and the main purpose of production testing is to understand the production dynamics of an oil well and the decreasing pressure of the production, and to perform a series of well testing tests. The estimated oil production can be estimated initially based on the first collected data of the test production and the initial evaluation criteria, and then the first actual oil production can be determined based on the conventional test production.
S102, acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield and the first actual oil yield of the target reservoir is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
For example, if the difference between the estimated oil yield and the first actual oil yield is greater than the preset difference, the actual determined productivity of the conventional test production is proved to be not matched with the lithology experience interpretation standard result determined based on the first collected data and the initial evaluation standard, and at the moment, the evaluation index, which is the initial evaluation standard adopted based on the first collected data, is proved to be not accurate and is not matched with the actual situation. And then fracturing the thick-layer massive heterogeneous sandstone reservoir of the target reservoir, and recovering oil again, wherein the second actual oil production of the target reservoir can be determined.
And S103, establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
Illustratively, after volumetric fracturing of the reservoir, the evaluation criteria for the giant chunk non-average sandstone reservoir are re-established based on the acquired second actual oil production and the second acquired data that is comprehensively re-acquired. The problems of difficult identification of effective reservoirs and unclear knowledge of oil-water relationship in thick-layer massive heterogeneous sandstone reservoirs deposited by near-object sources are solved, and meanwhile, a basis is provided for the establishment of a production scheme.
By way of example, conventional test production and fracturing test production effect comparison are respectively carried out on reservoirs with different interpretation conclusions of drilled wells, and according to the productivity rules of different production modes, reservoir characteristics of high-yield industrial oil flows are summarized and analyzed, and the interrelation between the productivity intensity of the effective oil-containing reservoir and conventional logging parameters, namely fracturing evaluation standards, are determined.
By means of the technical scheme, the evaluation method of the thick-layer massive heterogeneous sandstone reservoir provided by the invention is used for solving the problem that an evaluation standard of the thick-layer massive heterogeneous sandstone reservoir lacks a better definition method; acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production; and establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data. In the scheme, conventional test production and fracturing test production are respectively carried out on reservoirs with different interpretation conclusions of drilled wells, estimated oil production and actual oil production of the drilled wells are compared, so that whether an evaluation standard is accurate is determined, the problematic reservoirs are identified, conventional logging project interpretation standards are quantified in an inverse mode in combination with the capacity situation after fracturing, and then the evaluation standard of the thick-layer blocky heterogeneous sandstone reservoirs is reestablished by integrating the volume fracturing test production effect and new acquisition parameters.
In one embodiment of the present invention, in one embodiment,
The first acquired data comprise logging interpretation parameters and logging interpretation parameters of the target reservoir in a conventional test production stage;
The obtaining the estimated oil yield of the target reservoir comprises the following steps:
acquiring logging interpretation parameters and logging interpretation parameters of a target reservoir in a conventional test production stage;
and determining the estimated oil production based on the logging interpretation parameters, the logging interpretation parameters and the initial evaluation criteria.
By way of example, logging is a process of establishing a logging geologic profile, finding oil and gas display, evaluating hydrocarbon reservoirs, and providing drilling information services for petroleum engineering (investors, drilling engineering, other engineering) by using methods such as rock and mineral analysis, geophysics, geochemistry, and the like to observe, collect, record, analyze wellbore return information such as solids, liquids, gases, and the like during while-drilling. Logging is a task of researching borehole geologic profiles in detail, detecting useful minerals, providing data necessary for calculating reserves in detail, such as effective thickness of an oil layer, porosity, hydrocarbon saturation, permeability and the like, and researching drilling technical conditions and the like according to geologic and geophysical conditions.
For example, corresponding logging interpretation parameters and logging interpretation parameters may be obtained during a conventional production test phase, and the estimated oil production may be determined based on both and the initial evaluation criteria.
In one embodiment of the present invention, in one embodiment,
The second acquired data includes logging interpretation parameters and logging interpretation parameters of the target reservoir during the fracturing test production phase.
Illustratively, the second acquisition data, including logging interpretation parameters and logging interpretation parameters, needs to be retrieved during the fracturing test production phase.
By way of example, if an interval occurs where the estimated oil production does not match the production characteristics, such as where the log shows oil marks, the log is interpreted as a reservoir of dry and low producing layers, but a higher industrial oil flow is seen after the fracturing and running, with a sustained and stable production. At this time, the production characteristics are combined with core experimental analysis to determine the reservoir characteristics of the lower limit of oil content, and the logging and logging data, namely logging interpretation parameters and logging interpretation parameters, are determined through experimental analysis in combination with logging gas logging, localization, light hydrocarbon and logging data.
In one embodiment, the method further comprises:
Establishing a logging interpretation chart based on logging interpretation parameters of a target reservoir in a fracturing test production stage;
And building a logging interpretation chart based on logging interpretation parameters of the target reservoir in the fracturing test production stage.
By way of example, firstly, a logging interpretation chart is established, so that various characteristics and oil and gas conditions of a rock core can be conveniently observed and described, the underground stratum sequence and lithology can be mastered, the oil and gas and water conditions of the stratum can be initially known, and subsequent reservoir evaluation of a target reservoir can be facilitated. And then, a logging interpretation chart is established based on the effective thickness, the porosity, the saturation of oil and gas and the permeability, so that the state of the target reservoir in the fracturing test production stage can be analyzed from two layers.
In one embodiment, the establishing the fracturing evaluation criteria of the thick-layer bulk heterogeneous sandstone reservoir based on the second actual oil production and the second collected data includes:
and establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production, the logging interpretation plate and the logging interpretation plate.
Illustratively, the comprehensive volume fracturing test production effect, namely the second actual oil production, the new logging interpretation template and the logging interpretation template, is combined, so that the evaluation standard of the thick-layer massive heterogeneous sandstone reservoir is reestablished. Therefore, the oil-water development characteristics of the target reservoir and the oil-water relation of the blocks are clarified, and the oil layer standard and the oil-water relation are effectively distinguished.
In one embodiment, the creating a log interpretation template based on the log interpretation parameters of the target reservoir during the fracturing test production stage includes:
Determining a logging interpretation template based on reservoir physical properties, oil content, mud content, in-situ cuttings analysis data, indoor cuttings analysis data, and gas logging data of the target reservoir.
The logging interpretation template is determined based on the parameter logging, and lithology interpretation and homing are performed according to the on-site comprehensive geological data, the on-site logging data and the comprehensive analysis and test data, so that the oil, gas and water states can be determined.
In one embodiment, the creating a log interpretation template based on the log interpretation parameters of the target reservoir during the fracturing test production stage includes:
well log interpretation templates were established based on 3700 logs, nuclear magnetic logs, and conventional logs.
Illustratively, a log interpretation template for the second evaluation is also determined by cross-validating the target reservoir with conventional log interpretations by adding 3700 logs, 5700 logs, and nuclear magnetic log series items. Therefore, the method is more beneficial to inversely quantifying the evaluation standard of the conventional well logging in combination with the capacity condition.
The explanation plate in the scheme is mainly established by using office, geoWare and GeoEast are used as auxiliary software, the table is mainly used for data analysis and establishing a multi-functional relation diagram of oil and gas division standard, and the GeoWare and GeoEast software are mainly used for drawing a well position plane diagram and a longitudinal section diagram, namely the explanation plate.
Further, as an implementation of the method shown in fig. 1, the embodiment of the invention further provides an evaluation device for a thick-layer massive heterogeneous sandstone reservoir, which is used for implementing the method shown in fig. 1. The embodiment of the device corresponds to the embodiment of the method, and for convenience of reading, details of the embodiment of the method are not repeated one by one, but it should be clear that the device in the embodiment can correspondingly realize all the details of the embodiment of the method. As shown in fig. 2, the apparatus includes: a first acquisition unit 21, a determination unit 22, a second acquisition unit 23, and a generation unit 24, wherein
A first obtaining unit 21, configured to obtain, in a case where the target reservoir is a thick-layer bulk heterogeneous sandstone reservoir, an estimated oil yield of the target reservoir, which is determined based on the first collected data and an initial evaluation criterion, and a first actual oil yield, which is determined based on conventional test production;
A second obtaining unit 22, configured to obtain a second actual oil yield of the target reservoir when a difference between the estimated oil yield and the first actual oil yield of the target reservoir is greater than a preset difference, where the second actual oil yield is determined based on fracturing test production;
and the establishing unit 23 is used for establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
By way of example only, and not by way of limitation,
The first acquired data comprise logging interpretation parameters and logging interpretation parameters of the target reservoir in a conventional test production stage;
The obtaining the estimated oil yield of the target reservoir comprises the following steps:
acquiring logging interpretation parameters and logging interpretation parameters of a target reservoir in a conventional test production stage;
and determining the estimated oil production based on the logging interpretation parameters, the logging interpretation parameters and the initial evaluation criteria.
By way of example only, and not by way of limitation,
The second acquired data includes logging interpretation parameters and logging interpretation parameters of the target reservoir during the fracturing test production phase.
Illustratively, the above unit is further configured to:
Establishing a logging interpretation chart based on logging interpretation parameters of a target reservoir in a fracturing test production stage;
And building a logging interpretation chart based on logging interpretation parameters of the target reservoir in the fracturing test production stage.
Illustratively, the establishing the fracturing evaluation criteria of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second collected data includes:
and establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production, the logging interpretation plate and the logging interpretation plate.
Illustratively, the creating a log interpretation template based on the log interpretation parameters of the target reservoir in the fracturing test production stage includes:
Determining a logging interpretation template based on reservoir physical properties, oil content, mud content, in-situ cuttings analysis data, indoor cuttings analysis data, and gas logging data of the target reservoir.
Illustratively, the creating a log interpretation template based on the log interpretation parameters of the target reservoir in the fracturing test production stage includes:
well log interpretation templates were established based on 3700 logs, nuclear magnetic logs, and conventional logs.
By means of the technical scheme, the evaluation device for the thick-layer massive heterogeneous sandstone reservoir provided by the invention is used for solving the problem that an evaluation standard of the thick-layer massive heterogeneous sandstone reservoir lacks a better definition method; acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production; and establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data. In the scheme, conventional test production and fracturing test production are respectively carried out on reservoirs with different interpretation conclusions of drilled wells, estimated oil production and actual oil production of the drilled wells are compared, so that whether an evaluation standard is accurate is determined, the problematic reservoirs are identified, conventional logging project interpretation standards are quantified in an inverse mode in combination with the capacity situation after fracturing, and then the evaluation standard of the thick-layer blocky heterogeneous sandstone reservoirs is reestablished by integrating the volume fracturing test production effect and new acquisition parameters.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the evaluation method of the thick-layer massive heterogeneous sandstone reservoir is realized by adjusting the parameters of the inner core, so that the problem that the evaluation standard of the thick-layer massive heterogeneous sandstone reservoir lacks a better definition method can be solved.
The embodiment of the invention provides a computer readable storage medium, which comprises a stored program, and the program is executed by a processor to realize the evaluation method of the thick-layer blocky heterogeneous sandstone reservoir.
The embodiment of the invention provides a processor which is used for running a program, wherein the evaluation method of the thick-layer massive heterogeneous sandstone reservoir is executed when the program runs.
The embodiment of the invention provides electronic equipment, which comprises at least one processor and at least one memory connected with the processor; wherein the processor is configured to execute the evaluation method of the thick-layer massive heterogeneous sandstone reservoir according to the program instructions in the memory
An embodiment of the present invention provides an electronic device 30, as shown in fig. 3, where the electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; wherein, the processor 301 and the memory 302 complete communication with each other through the bus 303; the processor 301 is configured to invoke program instructions in the memory to perform the method of evaluating a thick-layer bulk heterogeneous sandstone reservoir as described above.
The intelligent electronic device herein may be a PC, PAD, cell phone, etc.
The application also provides a computer program product adapted to perform, when executed on a flow management electronic device, a program initialized with the method steps of:
Under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, obtaining estimated oil yield and first actual oil yield of the target reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional trial production;
Acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
And establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
Further, the method comprises the steps of,
The first acquired data comprise logging interpretation parameters and logging interpretation parameters of the target reservoir in a conventional test production stage;
The obtaining the estimated oil yield of the target reservoir comprises the following steps:
acquiring logging interpretation parameters and logging interpretation parameters of a target reservoir in a conventional test production stage;
and determining the estimated oil production based on the logging interpretation parameters, the logging interpretation parameters and the initial evaluation criteria.
Further, the method comprises the steps of,
The second acquired data includes logging interpretation parameters and logging interpretation parameters of the target reservoir during the fracturing test production phase.
Further, the method further comprises the following steps:
Establishing a logging interpretation chart based on logging interpretation parameters of a target reservoir in a fracturing test production stage;
And building a logging interpretation chart based on logging interpretation parameters of the target reservoir in the fracturing test production stage.
Further, the establishing a fracturing evaluation criterion of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second collected data includes:
and establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production, the logging interpretation plate and the logging interpretation plate.
Further, the method for creating the logging interpretation template based on the logging interpretation parameters of the target reservoir in the fracturing test production stage comprises the following steps:
Determining a logging interpretation template based on reservoir physical properties, oil content, mud content, in-situ cuttings analysis data, indoor cuttings analysis data, and gas logging data of the target reservoir.
Further, the building of the log interpretation template based on the log interpretation parameters of the target reservoir in the fracturing test production stage includes:
well log interpretation templates were established based on 3700 logs, nuclear magnetic logs, and conventional logs.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Embodiments of the present application also provide a computer program product comprising computer software instructions which, when run on a processing device, cause the processing device to perform a flow of control of a memory as in the corresponding embodiment of fig. 1.
The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be stored by a computer or data storage devices such as servers, data centers, etc. that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)) or the like.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or 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 of 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 (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method of evaluating a thick layer bulk heterogeneous sandstone reservoir, comprising:
Under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, obtaining estimated oil yield and first actual oil yield of the target reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional trial production;
Acquiring a second actual oil yield of the target reservoir under the condition that the difference value between the estimated oil yield of the target reservoir and the first actual oil yield is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
and establishing a fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The first acquired data comprise logging interpretation parameters and logging interpretation parameters of the target reservoir in a conventional test production stage;
The obtaining the estimated oil yield of the target reservoir comprises the following steps:
acquiring logging interpretation parameters and logging interpretation parameters of a target reservoir in a conventional test production stage;
and determining the estimated oil yield based on the logging interpretation parameters, logging interpretation parameters and the initial evaluation criteria.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The second acquired data includes logging interpretation parameters and logging interpretation parameters of the target reservoir during the fracturing test production phase.
4. A method according to claim 3, further comprising:
Establishing a logging interpretation chart based on logging interpretation parameters of a target reservoir in a fracturing test production stage;
And building a logging interpretation chart based on logging interpretation parameters of the target reservoir in the fracturing test production stage.
5. The method of claim 4, wherein the establishing a frac evaluation criteria for the thick-layer bulk heterogeneous sandstone reservoir based on the second actual oil production and second acquisition data comprises:
And establishing a fracturing evaluation standard of the thick-layer blocky heterogeneous sandstone reservoir based on the second actual oil production, the logging interpretation template and the logging interpretation template.
6. The method of claim 4, wherein the creating a log interpretation template based on log interpretation parameters of the target reservoir during a fracturing test production phase comprises:
Determining a logging interpretation template based on reservoir physical properties, oil content, mud content, in-situ cuttings analysis data, indoor cuttings analysis data, and gas logging data of the target reservoir.
7. The method of claim 1, wherein the creating a log interpretation template based on the log interpretation parameters of the target reservoir during the fracturing test production phase comprises:
well log interpretation templates were established based on 3700 logs, nuclear magnetic logs, and conventional logs.
8. An evaluation device for a thick-layer massive heterogeneous sandstone reservoir is characterized in that,
The first acquisition unit is used for acquiring estimated oil yield and first actual oil yield of the target reservoir under the condition that the target reservoir is a thick-layer blocky heterogeneous sandstone reservoir, wherein the estimated oil yield is determined based on first acquired data and initial evaluation criteria, and the first actual oil yield is determined based on conventional test production;
The second obtaining unit is used for obtaining second actual oil yield of the target reservoir when the difference value between the estimated oil yield and the first actual oil yield of the target reservoir is larger than a preset difference value, wherein the second actual oil yield is determined based on fracturing test production;
And the establishing unit is used for establishing the fracturing evaluation standard of the thick-layer massive heterogeneous sandstone reservoir based on the second actual oil production and the second acquired data.
9. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program when executed by a processor implements the steps of the method of evaluating a thick-layer bulk heterogeneous sandstone reservoir according to any of claims 1 to 7.
10. An electronic device comprising at least one processor and at least one memory coupled to the processor; wherein the processor is adapted to invoke program instructions in the memory to perform the steps of the method of evaluating a thick-layer bulk heterogeneous sandstone reservoir according to any of claims 1 to 7.
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