A method and device for identifying seismic facies of a fracture-vug body

Abstract

The present application relates to the technical field of oil reservoir exploration, and particularly relates to a fracture-cave seismic facies identification method and device, which comprises the following steps: obtaining each reservoir section range of a fracture-cave reservoir; obtaining the seismic reflection energy intensity of each reservoir section of the fracture-cave reservoir; obtaining the seismic waveform characteristics of each reservoir section, wherein the seismic waveform characteristics are any one of the following: a first type of seismic waveform with both wave peaks and wave troughs, and a second type of seismic waveform with only wave peaks or only wave troughs; determining the seismic facies category of each reservoir section of the fracture-cave reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity, thereby providing an important basis for the exploration and development of the carbonate rock fracture-cave oil reservoir through effective identification of the seismic facies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil reservoir exploration, and in particular to a fracture-cave body seismic facies identification method and device. BACKGROUND

[0002] The carbonate rock fracture-cave reservoir has good exploration and development prospects, and the carbonate fracture-cave body space is highly heterogeneous, and it is difficult to depict the seismic, so the exploration and development of the carbonate rock fracture-cave reservoir is difficult.

[0003] The division of the seismic facies can provide an important basis for the exploration and development of the carbonate rock fracture-cave reservoir.

[0004] Therefore, how to effectively identify the seismic facies is a technical problem to be solved at present. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide a fracture-cave body seismic facies identification method and device which can overcome the above problems or at least partially solve the above problems.

[0006] In the first aspect, the present application provides a fracture-cave body seismic facies identification method, comprising:

[0007] obtaining each reservoir section of a fracture-cave reservoir;

[0008] obtaining the seismic reflection energy intensity of each reservoir section of the fracture-cave reservoir;

[0009] obtaining the seismic waveform feature of each reservoir section, the seismic waveform feature being any one of the following: a first type of seismic waveform having both a wave peak and a wave trough, and a second type of seismic waveform having only a wave peak or only a wave trough;

[0010] determining the seismic facies category of each reservoir section of the fracture-cave reservoir based on the seismic waveform feature and the seismic reflection energy intensity.

[0011] Further, the obtaining each reservoir section of a fracture-cave reservoir comprises:

[0012] obtaining a minimum energy threshold value of the fracture-cave reservoir based on the seismic reflection energy intensity of the drilled well;

[0013] obtaining each reservoir section of the fracture-cave reservoir higher than the minimum energy threshold value based on the minimum energy threshold value.

[0014] Further, the obtaining the seismic reflection energy intensity of each reservoir section comprises:

[0015] obtaining seismic data of the fracture-cave reservoir;

[0016] Based on the seismic data, seismic reflection energy intensity of each reservoir section is obtained, and the seismic reflection energy intensity is divided into first intensity, second intensity and third intensity in order of high to low intensity.

[0017] Further, the seismic waveform feature of each reservoir section of the fracture-cave reservoir is obtained, including:

[0018] Seismic data of each reservoir section of the fracture-cave reservoir is obtained.

[0019] Based on the seismic data, the seismic waveform feature of each reservoir section of the fracture-cave reservoir is obtained.

[0020] Further, the seismic waveform feature of each reservoir section of the fracture-cave reservoir is obtained based on the seismic data, including:

[0021] Based on the seismic data, it is determined whether there are wave peak and wave valley identification patterns in the direction along the connection line of each reservoir section of the fracture-cave reservoir.

[0022] If the wave peak identification pattern and the wave valley identification pattern exist at the same time, it is determined that the seismic waveform feature of the corresponding reservoir section at the corresponding position is a first type of guarantee, and it is a first type of seismic waveform.

[0023] If only the wave peak identification pattern or only the wave valley identification pattern exists, it is determined that the seismic waveform feature of the corresponding reservoir section at the corresponding position is a second type of seismic waveform.

[0024] Further, the seismic facies category of each reservoir section of the fracture-cave reservoir is determined based on the seismic waveform feature and the seismic reflection energy intensity, including:

[0025] When the seismic waveform feature of the reservoir section of the fracture-cave reservoir is a first type of seismic waveform, and the corresponding seismic reflection energy intensity is a first type of intensity, it is obtained that the seismic facies of the reservoir section of the fracture-cave reservoir is a first type of seismic facies, which indicates that the corresponding reservoir section has a high development degree.

[0026] When the seismic waveform feature of the reservoir section of the fracture-cave reservoir is a first type of seismic waveform, and the corresponding seismic reflection energy intensity is a second type of intensity, it is obtained that the seismic facies of the reservoir section of the fracture-cave reservoir is a second type of seismic facies, which indicates that the corresponding reservoir section has a medium development degree.

[0027] When the seismic waveform feature of the reservoir section of the fracture-cave reservoir is a first type of seismic waveform, and the corresponding seismic reflection energy intensity is a third type of intensity, or when the seismic waveform feature of the reservoir section of the fracture-cave reservoir is a second type of seismic waveform, it is determined that the seismic facies of the reservoir section of the fracture-cave reservoir is a third type of seismic facies, which indicates that the corresponding reservoir section has a low development degree.

[0028] In a second aspect, the present application further provides a fracture-cave body seismic facies identification device, comprising:

[0029] The first obtaining module is configured to obtain each reservoir section range of the fracture-cave reservoir.

[0030] The second obtaining module is configured to obtain seismic reflection energy intensity of each reservoir section of the fracture-cave reservoir.

[0031] The third obtaining module is configured to obtain seismic waveform features of each reservoir section, wherein the seismic waveform features are any one of the following: a first type of seismic waveform having both wave peaks and wave troughs, and a second type of seismic waveform having only wave peaks or only wave troughs.

[0032] The obtaining module is configured to determine seismic facies categories of each reservoir section of the fracture-cave reservoir based on the seismic waveform features and the seismic reflection energy intensity.

[0033] The one or more technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0034] The present application provides a fracture-cave body seismic facies identification method, comprising: obtaining each reservoir section of a fracture-cave reservoir; obtaining seismic reflection energy intensity of each reservoir section of the fracture-cave reservoir; obtaining seismic waveform features of each reservoir section, wherein the seismic waveform features are any one of the following: a first type of seismic waveform having both wave peaks and wave troughs, and a second type of seismic waveform having only wave peaks or only wave troughs; determining seismic facies categories of each reservoir section of the fracture-cave reservoir based on the seismic waveform features and the seismic reflection energy intensity, thereby providing an important basis for exploration and development of carbonate fracture-cave reservoirs through effective identification of seismic facies. BRIEF DESCRIPTION OF DRAWINGS

[0035] 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 detailed description is made with reference to the accompanying drawings.

[0036] Figure 1 A step flowchart of a fracture-cave body seismic facies identification method in an embodiment of the present application is shown;

[0037] Figure 2 A seismic profile of a fracture-cave reservoir in an embodiment of the present application is shown;

[0038] Figure 3 A seismic wave peak and wave trough combination plan view in an embodiment of the present application is shown;

[0039] Figure 4 A seismic plan view in an embodiment of the present application is shown;

[0040] Figures 5a to 5c A result diagram showing different oil production amounts obtained by exploiting reservoir sections corresponding to different seismic facies categories in the embodiment of the present application is shown;

[0041] Figure 6 A structural diagram of a fracture-cave body seismic facies recognition device in the embodiment of the present application is shown;

[0042] Figure 7 A structural diagram of a computer device for implementing the fracture-cave body seismic facies recognition method in the embodiment of the present application is shown. DETAILED DESCRIPTION

[0043] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0044] Embodiment One

[0045] The first embodiment of the present application provides a fracture-cave body seismic facies recognition method, as shown in the accompanying drawings, comprising: Figure 1

[0046] S101, obtaining ranges of each reservoir section of the fracture-cave reservoir;

[0047] S102, obtaining seismic reflection energy intensities of each reservoir section of the fracture-cave reservoir;

[0048] S103, obtaining seismic waveform features of each reservoir section, the seismic waveform features being any one of the following: a first type of seismic waveform having both a wave peak and a wave trough, and a second type of seismic waveform having only a wave peak or only a wave trough;

[0049] S104, determining seismic facies categories of each reservoir section of the fracture-cave reservoir based on the seismic waveform features and the seismic reflection energy intensities.

[0050] Since the carbonate fracture-cave reservoir has strong spatial heterogeneity, the reservoir development degree is related to both the seismic waveform features and the seismic reflection intensities, and the traditional seismic facies description method is difficult to effectively describe the characteristics, therefore, the fracture-cave body seismic facies recognition method provided in the embodiment of the present application can effectively describe the seismic facies.

[0051] In the specific implementation mode, first, S101 is executed to obtain ranges of each reservoir section of the fracture-cave reservoir, since the fracture-cave reservoir includes reservoir sections storing oil and reservoir sections storing water, the reservoir section referred to in the embodiment of the present application refers to the reservoir section storing oil.​

[0052] In an alternative embodiment, the obtaining of the reservoir sections of the fracture-cave reservoir comprises: obtaining a lowest energy threshold of the fracture-cave reservoir based on the seismic reflection energy intensity of the drilled well; and obtaining the reservoir sections of the fracture-cave reservoir higher than the lowest energy threshold based on the lowest energy threshold.

[0053] Specifically, the seismic reflection energy intensity of the drilled well is obtained by integrating the well logging, drilling and production performance, so that the lowest energy of the seismic reflection energy intensity of the drilled well is determined according to the well-seismic calibration of the drilled well, and is taken as the lowest energy threshold of the fracture-cave reservoir.

[0054] Then, the seismic reflection energy intensity corresponding to each reservoir section of the fracture-cave reservoir is compared with the lowest energy threshold respectively, and the reservoir sections of the fracture-cave reservoir lower than the lowest energy threshold are excluded, and the reservoir sections of the fracture-cave reservoir higher than the lowest energy threshold are retained.

[0055] Next, the analysis is performed on the retained reservoir sections of the fracture-cave reservoir higher than the lowest energy threshold.

[0056] S102 is performed to obtain the seismic reflection energy intensity of each reservoir section of the fracture-cave reservoir.

[0057] The specific obtaining process of the seismic reflection energy intensity is as follows:

[0058] Firstly, the seismic data of the fracture-cave reservoir is obtained, as shown in FIG. 1. Figure 2 The seismic data is marked on a seismic profile, and the seismic data above and below each reservoir section is included on the seismic profile.

[0059] When the seismic reflection energy intensity of each reservoir section is obtained, the brightness value corresponding to each reservoir section is obtained based on the seismic data marked on the seismic profile, which can be the brightness value of each region obtained by computer analysis, and is not limited herein.

[0060] Then, the seismic reflection energy intensity of each reservoir section is obtained based on the brightness value corresponding to each reservoir section, and the seismic reflection energy intensity is divided into a first intensity, a second intensity and a third intensity in order of high to low intensity.

[0061] Wherein, the higher the brightness value corresponding to the reservoir section is, the stronger the corresponding seismic reflection energy intensity is.

[0062] Therefore, the first intensity in the range of the seismic reflection energy intensity determined according to the brightness value is greater than 20*10 6 , the second intensity is 11*10 6 ~20*10 6 , and the third intensity is 6*106 ~11*10 6 .

[0063] While obtaining the seismic reflection energy intensity, S103 is executed to obtain the seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir, specifically including: obtaining seismic data of each reservoir segment of the fracture-vuggy reservoir; and obtaining the seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir based on the seismic data.

[0064] Specifically, seismic data of each reservoir segment of the fracture-vuggy reservoir is obtained; and based on the seismic data, seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir are obtained.

[0065] like Figure 2 As shown, the seismic data is displayed through a seismic profile. The seismic profile is marked with the waveform corresponding to each reservoir segment, and it is determined whether there are wave crest and wave trough identification graphics in the direction along the line connecting the reservoir segments of the fracture-vuggy reservoir. If there are both wave crest identification graphics and wave trough identification graphics, it is determined that the seismic waveform characteristics of the reservoir segment corresponding to the corresponding position are complete waveforms, which are first-class seismic waveforms.

[0066] If there is only a peak identification pattern or only a trough identification pattern, it is determined that the seismic waveform characteristics of the reservoir section corresponding to the corresponding position are the second type of seismic waveform.

[0067] like Figure 3 As shown in the figure, the combined plan view of seismic peaks and troughs obtained by overlapping the upper and lower marker graphics corresponding to the reservoir segments marked ①, ②, ..., ⑥ on the figure shows the actual waveform of each storage segment. The waveform of the reservoir segment corresponding to ① has both peak and trough marker graphics; the waveform of the reservoir segment corresponding to ② has both peak and trough marker graphics; the waveform of the reservoir segment corresponding to ③ has only peaks in part and both peaks and troughs in part; the waveform of the reservoir segment corresponding to ④ has both peak and trough marker graphics in part, and only troughs in another part. The waveform of the reservoir segment corresponding to ⑤ has both peak and trough marker graphics in part, and only peaks in the edge waveform. The reservoir segment corresponding to ⑥ has only troughs.

[0068] Finally, S104 is executed to determine the seismic facies category of each reservoir segment of the fracture-vuggy reservoir based on the seismic waveform characteristics and seismic reflection energy intensity.

[0069] For each reservoir segment, the seismic waveform characteristics and seismic reflection energy intensity correspond to it one by one and have no relationship with other reservoir segments.

[0070] In an alternative embodiment, when the seismic waveform feature of any reservoir section of the fracture-cave reservoir is the first type of seismic waveform and the corresponding seismic reflection energy intensity is the first type of intensity, the seismic facies of the reservoir section is determined to be the first type of seismic facies, and the first type of seismic facies indicates that the corresponding reservoir section has a high development degree.

[0071] When the seismic waveform feature of any reservoir section of the fracture-cave reservoir is the first type of seismic waveform and the corresponding seismic reflection energy intensity is the second type of intensity, the seismic facies of the reservoir section is determined to be the second type of seismic facies, and the second type of seismic facies indicates that the corresponding reservoir section has a medium development degree.

[0072] When the seismic waveform feature of any reservoir section of the fracture-cave reservoir is the first type of seismic waveform and the corresponding seismic reflection energy intensity is the third type of intensity, or when the seismic waveform feature of the reservoir section is the second type of seismic waveform, the seismic facies of the reservoir section of the fracture-cave reservoir is determined to be the third type of seismic facies, and the third type of seismic facies indicates that the corresponding reservoir section has a low development degree.

[0073] For example, from the seismic plane diagram shown in Fig. 1, the seismic facies of the reservoir section ① is determined to be the first type of seismic facies (I type of seismic facies), the seismic facies of the reservoir section ② is determined to be the second type of seismic facies (II type of seismic facies), and the seismic facies of the reservoir section ③ is determined to be the third type of seismic facies (III type of seismic facies). Figure 2 As can be seen, the seismic reflection energy intensity corresponding to the reservoir sections with labels ①-⑨ all has three types of intensity. In combination with the seismic waveform features corresponding to the reservoir sections with labels ①-⑨, the seismic facies categories of the reservoir sections are obtained. That is, the seismic waveform feature of the central region of the reservoir sections with labels ①-⑨ is the first type of seismic waveform, and the seismic waveform feature of the edge region of the reservoir sections with labels ①-⑨ is the second type of seismic waveform. Therefore, according to the seismic plane diagram shown in Fig. 1, Figure 4 , the seismic facies of the central region of the reservoir sections with labels ①-⑨ is determined to be the first type of seismic facies (I type of seismic facies), the seismic facies of the region at the edge of the central line region is determined to be the second type of seismic facies (II type of seismic facies), and the seismic facies of the edge region at the edge of the central region is determined to be the third type of seismic facies.

[0074] After the seismic facies categories of the reservoir sections are determined, the reservoir sections corresponding to different seismic facies categories are exploited respectively, and different oil production results are obtained, as shown in Fig. 2. Figures 5a to 5c For the reservoir section corresponding to the first type of seismic facies, the oil production is greater than 30,000 tons per well; for the reservoir section corresponding to the second type of seismic facies, the oil production is greater than 1.5-30,000 tons per well; and for the reservoir section corresponding to the third type of seismic facies, the oil production is less than 15,000 tons per well.

[0075] Since the development degrees of the reservoir sections corresponding to the first type of seismic facies, the second type of seismic facies, and the third type of seismic facies gradually decrease, the oil production of the reservoir section corresponding to the first type of seismic facies is the highest. Through effective identification of the seismic facies categories, important basis can be provided for exploration and development of carbonate fracture-cave reservoirs.

[0076] The one or more technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0077] The application provides a fracture-vug body seismic facies identification method, which comprises the following steps: acquiring ranges of each reservoir section of a fracture-vug reservoir; acquiring seismic reflection energy intensity of each reservoir section of the fracture-vug reservoir; acquiring seismic waveform characteristics of each reservoir section, wherein the seismic waveform characteristics are any one of the following: a first type of seismic waveform with wave peaks and wave troughs, and a second type of seismic waveform with only wave peaks or only wave troughs; determining seismic facies categories of each reservoir section of the fracture-vug reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity, so as to provide an important basis for exploration and development of a carbonate rock fracture-vug reservoir through effective identification of the seismic facies.

[0078] Embodiment two

[0079] Based on the same inventive concept, the application further provides a fracture-vug body seismic facies identification device, as shown in the accompanying drawings, which comprises the following: Figure 6

[0080] A first acquisition module 601 is configured to acquire ranges of each reservoir section of a fracture-vug reservoir.

[0081] A second acquisition module 602 is configured to acquire seismic reflection energy intensity of each reservoir section of the fracture-vug reservoir.

[0082] A third acquisition module 603 is configured to acquire seismic waveform characteristics of each reservoir section, wherein the seismic waveform characteristics are any one of the following: a first type of seismic waveform with wave peaks and wave troughs, and a second type of seismic waveform with only wave peaks or only wave troughs.

[0083] A determination module 604 is configured to determine seismic facies categories of each reservoir section of the fracture-vug reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity.

[0084] In an optional embodiment, the first acquisition module 601 comprises:

[0085] A first obtaining unit is configured to obtain a minimum energy threshold value of the fracture-vug reservoir based on seismic reflection energy intensity of a drilled well.

[0086] A second obtaining unit is configured to obtain each reservoir section of the fracture-vug reservoir that is higher than the minimum energy threshold value based on the minimum energy threshold value.

[0087] In an optional embodiment, the second acquisition module 602 comprises:

[0088] A first acquisition unit is configured to acquire seismic data of the fracture-vug reservoir.

[0089] ​The second obtaining unit is configured to obtain seismic reflection energy intensity of each reservoir section based on the seismic data, wherein the seismic reflection energy intensity is divided into a first intensity, a second intensity and a third intensity in descending order of intensity.

[0090] In an optional implementation, the third obtaining module 603 comprises:

[0091] The third obtaining unit is configured to obtain seismic data of each reservoir section of the fracture-cave reservoir.

[0092] The fourth obtaining unit is configured to obtain seismic waveform features of each reservoir section of the fracture-cave reservoir based on the seismic data.

[0093] In an optional implementation, the fourth obtaining unit comprises:

[0094] The judging sub-unit is configured to judge whether there are wave-peak and wave-trough identification patterns in the direction along the connection line of each reservoir section of the fracture-cave reservoir based on the seismic data.

[0095] The first determining sub-unit is configured to determine that the seismic waveform feature of the reservoir section corresponding to the position is a complete waveform if there are both wave-peak and wave-trough identification patterns, and the complete waveform is a first type of seismic waveform.

[0096] The second determining sub-unit is configured to determine that the seismic waveform feature of the reservoir section corresponding to the position is a second type of seismic waveform if there is only wave-peak identification pattern or only wave-trough identification pattern.

[0097] In an optional implementation, the determining module 604 comprises:

[0098] The third obtaining unit is configured to determine that the seismic facies of the reservoir section of the fracture-cave reservoir is a first type of seismic facies if the seismic waveform feature of the reservoir section of the fracture-cave reservoir is the first type of seismic waveform and the corresponding seismic reflection energy intensity is the first type of intensity, wherein the first type of seismic facies indicates that the corresponding reservoir section has a high development degree.

[0099] The fourth obtaining unit is configured to determine that the seismic facies of the reservoir section of the fracture-cave reservoir is a second type of seismic facies if the seismic waveform feature of the reservoir section of the fracture-cave reservoir is the first type of seismic waveform and the corresponding seismic reflection energy intensity is the second type of intensity, wherein the second type of seismic facies indicates that the corresponding reservoir section has a medium development degree.

[0100] a fifth obtaining unit, configured to determine, when the seismic waveform characteristic of the reservoir segment of the fracture-vuggy reservoir is a first-type seismic waveform and the corresponding seismic reflection energy intensity is a third-type intensity, or when the seismic waveform characteristic of the reservoir segment of the fracture-vuggy reservoir is a second-type seismic waveform, determine that the seismic phase of the reservoir segment of the fracture-vuggy reservoir is a third-type seismic phase, wherein the third-type seismic phase indicates that the corresponding reservoir segment is low in development.

[0101] Example 3

[0102] Based on the same inventive concept, the third embodiment of the present invention provides a computer device, such as Figure 7 As shown, it includes a memory 704, a processor 702 and a computer program stored in the memory 704 and capable of running on the processor 702. When the processor 702 executes the program, the steps of the above-mentioned fracture-cavity seismic phase identification method are implemented.

[0103] Among them, Figure 7 In the embodiment of the present invention, a bus architecture (represented by bus 700) is shown. Bus 700 may include any number of interconnected buses and bridges, and bus 700 links together various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 706 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 may be the same component, namely a transceiver, which provides a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 may be used to store data used by processor 702 when performing operations.

[0104] Example 4

[0105] Based on the same inventive concept, a fourth embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned fracture-cavity seismic phase identification method when executed by a processor.

[0106] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general-purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing this type of system. In addition, the present invention is not directed to any specific programming language. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the above description of specific languages ​​is for the purpose of disclosing the best mode of the present invention.

[0107] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been described in detail in order not to obscure the understanding of this description.

[0108] Similarly, it is to be understood that the embodiments of the present application can be readily combined with one another, and the various features of the individual aspects of the present application can be interchanged among the several embodiments. Similarly, it is to be understood that, in order to obviate obscuring the disclosure and to help understand one or more of the various aspects of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description of related features. However, this method of disclosure should not be interpreted as reflecting an intention that the application requires more features than are explicitly recited in each claim. Rather, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following, which reflect the application claimed, are hereby expressly incorporated into this detailed description, with each claim acting as a separate embodiment of the application.

[0109] Those skilled in the art will appreciate that the modules in the apparatuses in the embodiments can be adapted and placed in one or more apparatuses other than the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and further can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, all combinations of all features disclosed in this specification (including the accompanying claims, abstract and drawings) and all processes or units of any methods or apparatuses so disclosed can be used in any combination. Unless explicitly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) can be replaced by alternative features providing the same, equivalent, or similar functionality.

[0110] Further, those skilled in the art will appreciate that, although some embodiments herein include certain features of other embodiments but not others, the combination of features of different embodiments implies that the scope of the application encompasses different embodiments and that the features of the different embodiments can be combined in any manner.

[0111] The various component embodiments of the present application can be implemented in hardware, or as software modules running in one or more processors, or in combinations thereof. As will be appreciated by one skilled in the art, microprocessors or digital signal processors (DSPs) can be used to implement some or all of the functionality of some or all of the components of the seismic facies identification apparatus and computer device according to embodiments of the present application in practice. The present application can also be implemented as a program (e.g., computer program and computer program product) for performing part or all of the methods described herein. Such program(s) of the present application can be stored on computer readable media or can be transmitted over a network using any transfer medium. Such transfer medium can be wire or wireless and include optical media, waveguides, wired networks, wireless networks, communication interfaces, etc.

[0112] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that one skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unit claim, several devices can be listed with a conjunction like 'or', but it is to be understood that each of these devices can be implemented by its own hardware item. The use of the word 'at least' followed by a list of one or more items does not preclude the presence of only one of the items. The use of the words 'first','second' and 'third' and the like does not imply any ordering, but rather are used for naming purposes only.

Claims

1. A method for identifying seismic phases of fracture-cavity bodies, characterized in that: include: Obtain the range of each reservoir section of the fracture-cavity reservoir; Obtaining the seismic reflection energy intensity of each reservoir segment of the fracture-vuggy reservoir, wherein obtaining the seismic reflection energy intensity of each reservoir segment comprises: obtaining seismic data of the fracture-vuggy reservoir; obtaining the seismic reflection energy intensity of each reservoir segment based on the seismic data, wherein the seismic reflection energy intensity is classified into a first intensity, a second intensity, and a third intensity in descending order of intensity; Acquiring seismic waveform characteristics of each reservoir segment, wherein the seismic waveform characteristics are any one of the following: a first type of seismic waveform having both peaks and troughs, and a second type of seismic waveform having only peaks or only troughs; determining the seismic facies category of each reservoir segment of the fracture-vuggy reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity; Determining the seismic facies category of each reservoir segment of the fracture-vuggy reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity includes: When the seismic waveform characteristic of the reservoir section of the fracture-vuggy reservoir is a first-type seismic waveform and the corresponding seismic reflection energy intensity is a first-type intensity, the seismic phase of the reservoir section of the fracture-vuggy reservoir is obtained to be a first-type seismic phase, and the first-type seismic phase indicates that the corresponding reservoir section has a high degree of development; When the seismic waveform characteristic of the reservoir section of the fracture-vuggy reservoir is a first-type seismic waveform and the corresponding seismic reflection energy intensity is a second-type intensity, the seismic phase of the reservoir section of the fracture-vuggy reservoir is a second-type seismic phase, and the second-type seismic phase indicates that the corresponding reservoir section has a medium degree of development; When the seismic waveform characteristics of the reservoir section of the fracture-vuggy reservoir are of the first type of seismic waveform and the corresponding seismic reflection energy intensity is of the third type of intensity, or when the seismic waveform characteristics of the reservoir section of the fracture-vuggy reservoir are of the second type of seismic waveform, the seismic phase of the reservoir section of the fracture-vuggy reservoir is determined to be of the third type of seismic phase, and the third type of seismic phase indicates that the corresponding reservoir section is low in development degree.

2. The method according to claim 1, wherein The obtaining of each reservoir segment range of the fracture-vuggy reservoir includes: Obtaining a minimum energy threshold value of the fracture-vuggy reservoir based on seismic reflection energy intensity of the drilled well; Based on the minimum energy threshold value, each reservoir section range of the fracture-vuggy reservoir above the minimum energy threshold value is obtained.

3. The method according to claim 1, wherein The obtaining of seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir includes: Acquire seismic data of various reservoir sections of fracture-cavity reservoirs; Based on the seismic data, seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir are obtained.

4. The method according to claim 3, wherein The obtaining of seismic waveform characteristics of each reservoir segment of the fracture-vuggy reservoir based on the seismic data includes: Based on the seismic data, determining whether there are wave crests and wave troughs in the direction of a line connecting the reservoir segments of the fracture-vuggy reservoir; If there are both wave crest identification patterns and wave trough identification patterns, it is determined that the seismic waveform characteristics of the reservoir segment corresponding to the corresponding position are complete waveforms, which are first-class seismic waveforms; If there is only a peak identification pattern or only a trough identification pattern, it is determined that the seismic waveform characteristics of the reservoir section corresponding to the corresponding position are the second type of seismic waveform.

5. A device for identifying seismic phases of fractured and cavernous bodies, characterized in that: include: The first acquisition module is used to obtain the range of each reservoir segment of the fracture-vuggy reservoir; A second acquisition module is used to obtain the seismic reflection energy intensity of each reservoir segment of the fracture-vuggy reservoir; a third acquisition module, configured to acquire seismic waveform characteristics of each reservoir segment, wherein the seismic waveform characteristics are any one of the following: a first type of seismic waveform having both peaks and troughs, or a second type of seismic waveform having only peaks or only troughs; An acquisition module is used to determine the seismic phase category of each reservoir segment of the fracture-vuggy reservoir based on the seismic waveform characteristics and the seismic reflection energy intensity.

6. The device according to claim 5, characterized in that The first acquisition module includes: A first obtaining unit is configured to obtain a minimum energy threshold value of the fracture-vuggy reservoir based on the seismic reflection energy intensity of the drilled well; The second obtaining unit is configured to obtain, based on the minimum energy threshold value, the range of each reservoir section of the fracture-vuggy reservoir that is higher than the minimum energy threshold value.

7. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method steps according to any one of claims 1 to 4 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method steps according to any one of claims 1 to 4 are implemented.

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