Method, device, storage medium and electronic device for determining biogenic silicon content

Abstract

The present invention discloses a method for determining the biogenic silicon content, which comprises: obtaining the total aluminum content, the total titanium content and the total silicon content of a shale interval, wherein the shale interval comprises a biogenic silicon-poor interval and a biogenic silicon-rich interval; when the total silicon content of the shale interval is generated by biogenesis and terrigenous debris input, determining the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval; and determining the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich interval and the aluminum content of the biogenic silicon-rich interval.

Description

Technical Field

[0001] The present invention relates to the field of exploration, and in particular to a method, device, storage medium and electronic equipment for determining biogenic silicon content. Background Art

[0002] Most of the biosilica-rich layers are primary productivity layers, which not only play an important role in the deposition and preservation of organic matter, but also have an important impact on the structure of shale. They can also provide a large number of nano-level pores for shale gas enrichment.

[0003] Currently, experimental methods for measuring biogenic silicon can be roughly divided into five categories: X-ray diffraction, direct infrared spectroscopy, normal distribution of chemical elements in large-volume sediments, chemical extraction, and microfossil counting. However, experimental methods for measuring biogenic silicon often have problems such as incomplete recovery of biogenic silicon and contamination of non-biogenic silicon. At the same time, experimental methods are expensive and cannot produce a continuous biogenic silicon content curve. Although the new generation of elemental logging instruments, high-precision lithologic scanning logging (LithoScanner), can simultaneously detect inelastic scattered gamma rays and neutron capture gamma rays with high accuracy, the silicon content detected by this instrument is the total silicon content, which includes both terrigenous detrital silicon and biogenic silicon, and cannot directly distinguish the origin of the siliceous material. Summary of the Invention

[0004] In order to solve the technical problem that the above-mentioned prior art cannot accurately determine the biogenic silicon content, the present invention provides a method for determining the biogenic silicon content, which comprises:

[0005] Obtaining the total aluminum content, the total titanium content, and the total silicon content of the shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer;

[0006] When it is determined that the total silicon content of the shale interval is generated by biogenic origin and terrigenous clastic input, determining the ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval;

[0007] The biogenic silicon content is determined based on the proportional relationship, the silicon content of the biogenic silicon-rich layer and the aluminum content of the biogenic silicon-rich layer.

[0008] In one embodiment, the method further comprises:

[0009] The ratio of the biogenic silicon content is determined based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer.

[0010] In one embodiment, the method further comprises:

[0011] Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0012] The origin of the total silicon content of the shale layer is determined based on the correlation relationship.

[0013] In one embodiment, determining the origin of the total silicon content of the shale layer based on the correlation relationship includes:

[0014] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0015] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0016] In one embodiment, determining the ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silica-poor layer and the aluminum content of the biogenic silica-poor layer includes:

[0017] The ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0018] Si=k*Al+b,

[0019] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0020] In one embodiment, determining the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer includes:

[0021] The biogenic silicon content was determined based on the following expression:

[0022] Si Bio =Si all -k*Al all ,

[0023] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0024] In one embodiment, determining the ratio of biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer includes:

[0025] The proportion of the biogenic silicon content was determined based on the following expression:

[0026]

[0027] Wherein, v is the ratio of the biogenic silicon content.

[0028] The present invention also provides a device for determining biogenic silicon content, comprising:

[0029] an acquisition module, configured to acquire a total aluminum content, a total titanium content, and a total silicon content of a shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer;

[0030] a first determining module for determining, when it is determined that the total silicon content of the shale interval is generated by biogenic genesis and terrigenous clastic input, a ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval;

[0031] The second determination module is configured to determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section.

[0032] The present invention further provides an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the determination method described above is performed.

[0033] The present invention also provides a storage medium, wherein a computer program stored in the storage medium can be executed by one or more processors and can be used to implement the determination method described above.

[0034] Compared with the prior art, one or more embodiments of the above solutions may have the following advantages or beneficial effects:

[0035] The accurate calculation of biogenic silicon content has been achieved, which is of great significance for shale reservoir evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The scope of the present disclosure may be better understood by reading the following detailed description of exemplary embodiments in conjunction with the accompanying drawings, which include:

[0037] Figure 1 A schematic diagram of a process for determining biogenic silicon content according to an embodiment of the present invention;

[0038] Figure 2 A diagram showing the results of the well logging interpretation of the biogenic silicon content ratio in Well A1, according to a method for determining biogenic silicon content provided by an embodiment of the present invention;

[0039] Figure 3 A relationship diagram of aluminum and titanium elements in the shale layer of Well A1 according to a method for determining biogenic silicon content provided by an embodiment of the present invention;

[0040] Figure 4 A diagram showing the relationship between silicon and aluminum elements in the biogenic silicon-poor interval of Well A1, according to a method for determining biogenic silicon content provided by an embodiment of the present invention;

[0041] Figure 5 A diagram showing the relationship between silicon and aluminum elements in the shale layer of Well A1, according to a method for determining biogenic silicon content provided by an embodiment of the present invention;

[0042] Figure 6 A flowchart of a method for determining biogenic silicon content provided by an embodiment of the present invention;

[0043] Figure 7 A schematic structural diagram of a device for determining biogenic silicon content provided by an embodiment of the present invention;

[0044] Figure 8 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0047] If similar descriptions of "first / second / third" appear in the application documents, the following explanation is added. In the following description, the terms "first / second / third" are merely used to distinguish similar objects and do not represent a specific order of the objects. It is understandable that "first / second / third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein are for the purpose of describing embodiments of the present invention only and are not intended to limit the present invention.

[0049] Example 1

[0050] During the deposition of stratigraphic elements, silicon mainly comes from terrigenous debris input, biogenesis and seafloor hydrothermal activity; aluminum mainly comes from terrigenous debris input, and titanium mainly comes from terrigenous fine clay adsorption and seafloor hydrothermal activity.

[0051] Therefore, when aluminum and titanium elements have good consistency, it can be considered that the seafloor hydrothermal activity is not strong and silicon elements mainly come from terrigenous debris input and biogenesis.

[0052] Based on this, in order to solve the technical problems existing in the prior art, the first embodiment of the present invention provides a method for determining the content of biogenic silicon. The method is applied to an electronic device, which can be a computer, a mobile terminal, etc. The function implemented by the method for determining the content of biogenic silicon provided by the embodiment of the present invention can be implemented by calling a program code by a processor of the electronic device, wherein the program code can be stored in a computer storage medium.

[0053] Figure 1 A schematic diagram of a method for determining biogenic silicon content provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the following steps are included.

[0054] Step S10: Obtain the total aluminum content, the total titanium content, and the total silicon content of the shale layer.

[0055] Specifically, the above parameters can be acquired through high-precision lithologic scanning, and the shale layer includes a biogenic silica-poor layer and a biogenic silica-rich layer.

[0056] Step S20: When it is determined that the total silicon content of the shale layer is generated by biogenic origin and terrigenous debris input, the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input is determined based on the relationship between the silicon content of the biogenic silicon-poor layer and the aluminum content of the biogenic silicon-poor layer.

[0057] In some embodiments, the method further comprises:

[0058] Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0059] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0060] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0061] For example, when there is no submarine hydrothermal activity, titanium increases linearly with aluminum. However, when submarine hydrothermal activity is present, the source of titanium includes not only terrigenous detrital input but also submarine hydrothermal activity. In this case, titanium deviates from the normal trend line, and there is no linear positive correlation between titanium and aluminum, which is the "other relationship" mentioned above.

[0062] Specifically, the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0063] Si=k*Al+b,

[0064] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0065] Step S30: Determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer.

[0066] Specifically, the biogenic silicon content is determined based on the following expression:

[0067] Si Bio =Si all -k*Al all ,

[0068] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0069] In some embodiments, the method further comprises:

[0070] The ratio of the biogenic silicon content is determined based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer.

[0071] Specifically, the ratio of the biogenic silicon content is determined based on the following expression:

[0072]

[0073] Wherein, v is the ratio of the biogenic silicon content.

[0074] The method for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0075] It should be noted that in the embodiments of the present invention, if the method for determining the biogenic silicon content is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk. In this way, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0076] Example 2

[0077] In order to solve the above technical problems existing in the prior art, a second embodiment of the present invention provides a method for determining the content of biogenic silicon, which includes the following steps.

[0078] Step S11: Obtain the total aluminum content, the total titanium content, and the total silicon content of the shale layer.

[0079] Specifically, the above parameters can be acquired through high-precision lithologic scanning, and the shale layer includes a biogenic silica-poor layer and a biogenic silica-rich layer.

[0080] Step S21: When it is determined that the total silicon content of the shale layer is generated by biogenic origin and terrigenous debris input, the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input is determined based on the relationship between the silicon content of the biogenic silicon-poor layer and the aluminum content of the biogenic silicon-poor layer.

[0081] In some embodiments, the method further comprises:

[0082] Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0083] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0084] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0085] For example, when there is no submarine hydrothermal activity, titanium increases linearly with aluminum. However, when submarine hydrothermal activity is present, the source of titanium includes not only terrigenous detrital input but also submarine hydrothermal activity. In this case, titanium deviates from the normal trend line, and there is no linear positive correlation between titanium and aluminum, which is the "other relationship" mentioned above.

[0086] Specifically, the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0087] Si=k*Al+b,

[0088] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0089] Step S31: Determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer.

[0090] Specifically, the biogenic silicon content is determined based on the following expression:

[0091] Si Bio =Si all -k*Al all ,

[0092] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0093] Step S41: determining the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer.

[0094] Specifically, the ratio of the biogenic silicon content is determined based on the following expression:

[0095]

[0096] Wherein, v is the ratio of the biogenic silicon content.

[0097] The method for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0098] It should be noted that in the embodiments of the present invention, if the method for determining the biogenic silicon content is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk. In this way, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0099] Example 3

[0100] In order to solve the above technical problems existing in the prior art, a third embodiment of the present invention provides a method for determining the content of biogenic silicon, which includes the following steps.

[0101] Step S12: Obtain the total aluminum content, the total titanium content, and the total silicon content of the shale layer.

[0102] Specifically, the above parameters can be acquired through high-precision lithologic scanning, and the shale layer includes a biogenic silica-poor layer and a biogenic silica-rich layer.

[0103] Step S22: Determine the correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer.

[0104] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0105] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0106] For example, when there is no submarine hydrothermal activity, titanium increases linearly with aluminum. However, when submarine hydrothermal activity is present, the source of titanium includes not only terrigenous detrital input but also submarine hydrothermal activity. In this case, titanium deviates from the normal trend line, and there is no linear positive correlation between titanium and aluminum, which is the "other relationship" mentioned above.

[0107] Step S32: When it is determined that the total silicon content of the shale layer is generated by biogenic origin and terrigenous debris input, the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input is determined based on the relationship between the silicon content of the biogenic silicon-poor layer and the aluminum content of the biogenic silicon-poor layer.

[0108] Specifically, the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0109] Si=k*Al+b,

[0110] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0111] Step S42: Determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer.

[0112] Specifically, the biogenic silicon content is determined based on the following expression:

[0113] Si Bio =Si all -k*Al all ,

[0114] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0115] Step S52: determining the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer.

[0116] Specifically, the ratio of the biogenic silicon content is determined based on the following expression:

[0117]

[0118] Wherein, v is the ratio of the biogenic silicon content.

[0119] The method for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0120] It should be noted that in the embodiments of the present invention, if the method for determining the biogenic silicon content is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk. In this way, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0121] Example 4

[0122] The fourth embodiment of the present invention aims at shale reservoirs and realizes the estimation of the proportion of biological silicon content based on the interpretation results of silicon, aluminum and titanium content of high-precision lithologic scanning logging.

[0123] The specific steps are as follows:

[0124] (1) A correlation analysis of the aluminum and titanium contents in the entire shale interval is conducted. If the two have a good positive correlation, it indicates that the seafloor hydrothermal activity was not strong during the deposition of this set of shale.

[0125] (2) In organic matter-poor intervals, i.e., biogenic silica-poor intervals, primary productivity is weak and the biogenic silica content in the strata is low. Both silicon and aluminum in the strata are primarily derived from terrigenous detritus input, so a linear relationship can be established between the two.

[0126] Si=k*Al+b

[0127] Where Si is the total silicon content in the biogenic silica-poor interval; Al is the total aluminum content in the biogenic silica-poor interval. k and b are empirical coefficients, where k represents the ratio between silicon and aluminum during the input of terrigenous debris; b represents the biogenic silica content in the biogenic silica-poor interval, which is generally low.

[0128] (3) In the biogenic silica-rich section, the proportion of biogenic silica content can be estimated by subtracting the silica content of terrigenous debris from the total silica content in the section.

[0129]

[0130] Among them, v is the proportion of biogenic silicon to total silicon; Si all is the total silicon content in the biogenic silicon-rich interval; Al all It is the total aluminum content in the biogenic silica-rich layer.

[0131] like Figure 2 As shown in the figure, this example interprets the biogenic silicon element ratio for Well A1 in the Sichuan Basin, with the target interval being the Longwufeng Formation-Longmaxi Formation.

[0132] The solid line in the first track is the natural gamma curve, and the dotted line is the deuranium gamma curve;

[0133] The second long dashed line is the wellbore curve;

[0134] The solid line in the third track is the titanium content curve;

[0135] The solid line in the fourth track is the aluminum content curve;

[0136] The solid line in the fifth track is the silicon content curve;

[0137] The sixth path is the path of depth;

[0138] The seventh track is the small layer interpreted by well logging;

[0139] The solid line in the eighth lane is the calculated biogenic silicon ratio.

[0140] It should be noted that layers 1-3 in the figure are deep-water shelf deposits, and layers 4-6 are shallow-water shelf deposits. Biotic silica is not developed in shallow-water shelf deposits, and the sedimentary materials mainly come from terrigenous debris input.

[0141] First, the intersection relationship between titanium and aluminum elements in the Wufeng-Longmaxi shale interval was established, such as Figure 3 As shown. Figure 3 It can be seen from the figure that the two are well consistent, which indicates that the seafloor hydrothermal activity in this shale layer is relatively weak.

[0142] Secondly, in the low organic matter layer, the intersection relationship between silicon and aluminum elements is established, such as Figure 4 As shown, the quantitative relationship between the two is obtained, where k = 2.8 and b = 0.017. Finally, the relationship diagram between silicon and aluminum elements can be obtained in the entire shale layer (as shown in Figure 5As shown in the figure, it can be seen that in the deep-water shelf sedimentary strata (sub-layers 1 and 2), the total silicon content significantly deviates from the trend line of terrigenous input silicon content, indicating that biogenic silicon is relatively developed in this layer. Finally, the expression in step (2) of this embodiment is used to calculate the proportion of biogenic silicon in the total silicon. The corresponding calculation results are shown in Figure 2 The eighth solid line shows

[0143] Figure 6 FIG. 1 is a flow chart of the method for determining the biogenic silicon content according to this embodiment. Figure 6 As described above, this embodiment provides a method for determining the biogenic silicon content of shale using high-precision lithologic scanning logging. The main steps include:

[0144] First, the correlation between aluminum and titanium was analyzed, which confirmed that the silicon in the strata mainly came from terrigenous debris input and biogenic origin, and there was no submarine hydrothermal silicon.

[0145] Secondly, the relationship between total silicon content and total aluminum content was established in the biogenic silica-poor interval, clarifying the quantitative relationship between silicon and aluminum input from terrigenous debris.

[0146] Finally, in the biogenic silica-rich interval, the biogenic silica content can be obtained by subtracting the terrigenous detrital silica content from the total silica content, and then the proportion of biogenic silica content can be determined.

[0147] The method for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0148] Example 5

[0149] In order to solve the above technical problems existing in the prior art, a fifth embodiment of the present invention provides a device for determining the content of biogenic silicon. Figure 7 This is a schematic diagram of a device for determining biogenic silicon content provided by an embodiment of the present invention. Figure 7 As shown, the apparatus 700 for determining the biogenic silicon content includes the following modules.

[0150] The acquisition module 701 is used to acquire the well logging data volume of the shale reservoir to be tested.

[0151] Specifically, the above parameters can be acquired through high-precision lithologic scanning, and the shale layer includes a biogenic silica-poor layer and a biogenic silica-rich layer.

[0152] The first determination module 702 is used to determine the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input based on the relationship between the silicon content of the biogenic silicon-poor layer and the aluminum content of the biogenic silicon-poor layer, when it is determined that the total silicon content of the shale layer is generated by biogenic genesis and terrigenous debris input.

[0153] In some implementations, the determining device 700 further includes:

[0154] A first determining unit is configured to determine a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0155] a second determining unit, configured to determine, when the correlation relationship is a linear positive correlation, that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0156] The third determining unit is configured to determine, when the correlation relationship is other relationships, whether the total silicon content of the shale layer is generated by biogenesis, terrigenous debris input, and seafloor hydrothermal activity.

[0157] For example, when there is no submarine hydrothermal activity, titanium increases linearly with aluminum. However, when submarine hydrothermal activity is present, the source of titanium includes not only terrigenous detrital input but also submarine hydrothermal activity. In this case, titanium deviates from the normal trend line, and there is no linear positive correlation between titanium and aluminum, which is the "other relationship" mentioned above.

[0158] Specifically, the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0159] Si=k*Al+b,

[0160] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0161] The second determination module 703 is configured to determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer.

[0162] Specifically, the biogenic silicon content is determined based on the following expression:

[0163] Si Bio =Si all -k*Al all ,

[0164] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0165] In some implementations, the determining device 700 further includes:

[0166] The third determination module is configured to determine the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer.

[0167] Specifically, the ratio of the biogenic silicon content is determined based on the following expression:

[0168]

[0169] Wherein, v is the ratio of the biogenic silicon content.

[0170] The device for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0171] Example 6

[0172] To solve the above technical problems existing in the prior art, the sixth embodiment of the present invention provides a device for determining the biogenic silicon content. Specifically, the device for determining the biogenic silicon content 710 may include the following modules.

[0173] The acquisition module 711 is used to acquire the well logging data volume of the shale reservoir to be tested.

[0174] Specifically, the above parameters can be acquired through high-precision lithologic scanning, and the shale layer includes a biogenic silica-poor layer and a biogenic silica-rich layer.

[0175] The first determination module 712 is used to determine the proportional relationship between the silicon content of the terrigenous debris input and the aluminum content of the terrigenous debris input based on the relationship between the silicon content of the biogenic silicon-poor layer and the aluminum content of the biogenic silicon-poor layer, when it is determined that the total silicon content of the shale layer is generated by biogenic genesis and terrigenous debris input.

[0176] In some implementations, the determining device 710 further includes:

[0177] A first determining unit is configured to determine a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0178] a second determining unit, configured to determine, when the correlation relationship is a linear positive correlation, that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0179] The third determining unit is configured to determine, when the correlation relationship is other relationships, whether the total silicon content of the shale layer is generated by biogenesis, terrigenous debris input, and seafloor hydrothermal activity.

[0180] Specifically, the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0181] Si=k*Al+b,

[0182] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0183] The second determination module 713 is configured to determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer, and the aluminum content of the biogenic silicon-rich layer.

[0184] Specifically, the biogenic silicon content is determined based on the following expression:

[0185] Si Bio =Si all -k*Al all ,

[0186] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0187] The third determination module 714 is configured to determine the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer.

[0188] Specifically, the ratio of the biogenic silicon content is determined based on the following expression:

[0189]

[0190] Wherein, v is the ratio of the biogenic silicon content.

[0191] The device for determining the biogenic silicon content provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0192] Example 7

[0193] A seventh embodiment of the present invention provides an electronic device. Figure 8 Schematic diagram of the structure of the electronic device provided by the embodiment of the present invention. Figure 8 As shown, the electronic device 800 includes: a processor 801 , at least one communication bus 802 , a user interface 803 , at least one external communication interface 804 , and a memory 805 .

[0194] The communication bus 802 may be configured to implement connection and communication between these components.

[0195] The user interface 803 may include a display screen, and the external communication interface 804 may include a standard wired interface and a wireless interface. The processor 801 is configured to execute a program for determining the biogenic silicon content stored in the memory to implement the steps of the method for determining the biogenic silicon content provided in the above embodiment.

[0196] The processor can be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the method for determining the spatial distribution of resources in the above embodiment.

[0197] The memory can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0198] The multimedia component may include a screen and an audio component. The screen may be a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in a memory or transmitted via a communication component. The audio component also includes at least one speaker for outputting audio signals.

[0199] The I / O interface provides an interface between the processor and other interface modules, such as a keyboard, a mouse, buttons, etc. These buttons can be virtual buttons or physical buttons.

[0200] The communication component is used for wired or wireless communication between the electronic device and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or one or a combination thereof, can include a Wi-Fi module, a Bluetooth module, or an NFC module.

[0201] When the above computer program is executed by a processor, the following method steps can be implemented:

[0202] Obtaining the total aluminum content, the total titanium content, and the total silicon content of the shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer;

[0203] When it is determined that the total silicon content of the shale interval is generated by biogenic origin and terrigenous clastic input, determining the ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval;

[0204] The biogenic silicon content is determined based on the proportional relationship, the silicon content of the biogenic silicon-rich layer and the aluminum content of the biogenic silicon-rich layer.

[0205] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0206] The ratio of the biogenic silicon content is determined based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer.

[0207] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0208] Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0209] The origin of the total silicon content of the shale layer is determined based on the correlation relationship.

[0210] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0211] Determining the cause of the total silicon content of the shale layer based on the correlation relationship includes:

[0212] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0213] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0214] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0215] The determining of the proportional relationship between the silicon content of the terrigenous clastic input and the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silica-poor layer and the aluminum content of the biogenic silica-poor layer includes:

[0216] The ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0217] Si=k*Al+b,

[0218] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0219] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0220] The determining of the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section includes:

[0221] The biogenic silicon content was determined based on the following expression:

[0222] Si Bio =Si all -k*Al all ,

[0223] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0224] Furthermore, the determining of the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer includes:

[0225] The proportion of the biogenic silicon content was determined based on the following expression:

[0226]

[0227] Wherein, v is the ratio of the biogenic silicon content.

[0228] The electronic device for determining the diagenetic phase type provided in this embodiment is used to accurately calculate the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0229] Example 8

[0230] Embodiment 8 of the present invention provides a storage medium having a computer program stored thereon, characterized in that when executed by a processor, the computer program implements the steps of the method for determining the biogenic silicon content provided in the above embodiments. The storage medium can be a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., an SD or DX memory), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, a server, an App store, and the like.

[0231] When the computer program stored on the storage medium is executed by a processor, the following method steps can be implemented:

[0232] Obtaining the total aluminum content, the total titanium content, and the total silicon content of the shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer;

[0233] When it is determined that the total silicon content of the shale interval is generated by biogenic origin and terrigenous clastic input, determining the ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval;

[0234] The biogenic silicon content is determined based on the proportional relationship, the silicon content of the biogenic silicon-rich layer and the aluminum content of the biogenic silicon-rich layer.

[0235] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0236] The ratio of the biogenic silicon content is determined based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer.

[0237] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0238] Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer;

[0239] The origin of the total silicon content of the shale layer is determined based on the correlation relationship.

[0240] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0241] Determining the cause of the total silicon content of the shale layer based on the correlation relationship includes:

[0242] When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input;

[0243] When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seabed hydrothermal activity.

[0244] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0245] The determining of the proportional relationship between the silicon content of the terrigenous clastic input and the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silica-poor layer and the aluminum content of the biogenic silica-poor layer includes:

[0246] The ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression:

[0247] Si=k*Al+b,

[0248] Among them, Si is the silicon content of the said biogenic silica-poor layer section, Al is the aluminum content of the said biogenic silica-poor layer section, k is the ratio of the silicon content of the said terrigenous debris input to the aluminum content of the said terrigenous debris input, and b is the biogenic silica content in the said biogenic silica-poor layer section.

[0249] Furthermore, when the above computer program is executed by a processor, the following method steps may be implemented:

[0250] The determining of the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section includes:

[0251] The biogenic silicon content was determined based on the following expression:

[0252] Si Bio =Si all -k*Al all ,

[0253] Among them, Si Bio is the biogenic silicon content, Si all is the silicon content of the biogenic silicon layer, Al all is the aluminum content in the biosilica-rich layer.

[0254] Furthermore, the determining of the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer includes:

[0255] The proportion of the biogenic silicon content was determined based on the following expression:

[0256]

[0257] Wherein, v is the ratio of the biogenic silicon content.

[0258] The application of the storage medium for determining the diagenetic phase type provided in this embodiment enables accurate calculation of the biogenic silicon content, which is of great significance to the evaluation of shale reservoirs.

[0259] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment.

[0260] Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0261] It should be understood that in various embodiments of the present invention, the order of the sequence numbers of the above processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0262] The serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0263] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0264] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways.

[0265] The device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0266] In addition, the coupling, direct coupling, or communication connection between the components shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0267] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0268] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0269] Those skilled in the art will understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROMs), magnetic disks, optical disks, and other media that can store program codes.

[0270] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0271] Based on this understanding, the technical solutions of the embodiments of the present invention, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes instructions for causing a controller to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0272] The above description is merely an embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for determining biogenic silicon content, characterized in that: include: Obtaining the total aluminum content, the total titanium content, and the total silicon content of the shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer; When it is determined that the total silicon content of the shale interval is generated by biogenic origin and terrigenous clastic input, determining the ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval; Determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section; The method further comprises: determining a ratio of biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer; The method further comprises: Determining a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer; Determining the origin of the total silicon content of the shale layer based on the correlation relationship; Determining the cause of the total silicon content of the shale layer based on the correlation relationship includes: When the correlation is a linear positive correlation, it is determined that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input; When the correlation relationship is other relationships, it is determined that the total silicon content of the shale layer is produced by biogenesis, terrigenous debris input and seafloor hydrothermal activity; The determining of the proportional relationship between the silicon content of the terrigenous clastic input and the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silica-poor layer and the aluminum content of the biogenic silica-poor layer includes: The ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression: ， Wherein, Si is the silicon content of the biogenic silica-poor section, Al is the aluminum content of the biogenic silica-poor section, k is the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input, and b is the biogenic silica content in the biogenic silica-poor section; The determining of the ratio of the biogenic silicon content based on the biogenic silicon content and the silicon element content of the biogenic silicon-rich layer includes: The proportion of the biogenic silicon content was determined based on the following expression: in, is the ratio of the biogenic silicon content, is the biogenic silicon content, is the silicon content in the biosilicon-rich layer.

2. The determination method according to claim 1, characterized in that The determining of the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section includes: The biogenic silicon content was determined based on the following expression: in, is the biogenic silicon content, is the silicon content of the biogenic silicon-rich layer, is the aluminum content in the biosilica-rich layer.

3. A device for determining biogenic silicon content, characterized in that: include: an acquisition module, configured to acquire a total aluminum content, a total titanium content, and a total silicon content of a shale layer, wherein the shale layer includes a biogenic silicon-poor layer and a biogenic silicon-rich layer; a first determining module for determining, when it is determined that the total silicon content of the shale interval is generated by biogenic genesis and terrigenous clastic input, a ratio of the silicon content of the terrigenous clastic input to the aluminum content of the terrigenous clastic input based on the relationship between the silicon content of the biogenic silicon-poor interval and the aluminum content of the biogenic silicon-poor interval; a second determination module, configured to determine the biogenic silicon content based on the proportional relationship, the silicon content of the biogenic silicon-rich layer section, and the aluminum content of the biogenic silicon-rich layer section; The device further comprises: a third determination module, configured to determine a ratio of biogenic silicon content based on the biogenic silicon content and the silicon content of the biogenic silicon-rich layer; The device further comprises: A first determining unit is configured to determine a correlation between the total aluminum content of the shale layer and the total titanium content of the shale layer; Determining the origin of the total silicon content of the shale layer based on the correlation relationship; a second determining unit, configured to determine, when the correlation relationship is a linear positive correlation, that the total silicon content of the shale layer is generated by biogenic and terrigenous debris input; a third determining unit, configured to determine, when the correlation relationship is other relationships, whether the total silicon content of the shale layer is generated by biogenesis, terrigenous debris input, and seafloor hydrothermal activity; The device is used to: The ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input is determined based on the following expression: ， Wherein, Si is the silicon content of the biogenic silica-poor section, Al is the aluminum content of the biogenic silica-poor section, k is the ratio of the silicon content of the terrigenous debris input to the aluminum content of the terrigenous debris input, and b is the biogenic silica content in the biogenic silica-poor section; The device is used to: The proportion of the biogenic silicon content was determined based on the following expression: in, is the ratio of the biogenic silicon content, is the biogenic silicon content, is the silicon content in the biosilicon-rich layer.

4. A storage medium, characterized in that The storage medium stores a program, and when the program is executed by a processor, the method according to any one of claims 1 to 2 is executed.

5. An electronic device, characterized in that: The electronic device includes a memory and a processor. A computer program is stored in the memory. The computer program is run by the processor to implement the method according to any one of claims 1 to 2.

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