String of beads imaging enhancement method, apparatus, electronic device, and medium

Abstract

The application discloses a string bead imaging enhancement method and device, electronic equipment and medium. The method can comprise: determining two target dip angle ranges according to the dip angle angle range of the strong layered reflection energy of the string bead in the pre-stack dip angle gather response; respectively performing energy enhancement on the dip angle gather in the two target dip angle ranges; and superimposing the dip angle gathers to obtain final imaging data volume. Through pre-stack dip angle scattering gather signal processing, the application can enhance the imaging reflection of the string bead anomaly body, highlight the structure characteristics of the string bead, and thus improve the imaging in terms of string bead position confirmation, existence of weak string bead, highlighting of string bead target and the like.

Description

Technical Field

[0001] This invention relates to the field of earthquake theory and technology, and more specifically, to a beaded imaging enhancement method, device, electronic device, and medium. Background Technology

[0002] The carbonate karst fracture-vuggy reservoirs in the Tarim Oilfield are buried at depths exceeding 6000 meters, making seismic imaging of beaded anomalies extremely challenging. The Ordovician carbonate karst fracture-vuggy reservoirs in this area exhibit complex pore, fracture, and vuggy structures and distribution patterns, varying pore and fracture sizes, diverse filling types, irregular geometric shapes, and dramatic spatial variations. Consequently, they exhibit significant wavefield signal scattering characteristics in seismic imaging. The size and filling morphology of the karst fractures and vuggies are closely related to diffraction wave characteristics; the most fundamental feature on seismic profiles is the beaded anomaly signal.

[0003] In reflection seismic data, reflected waves reflect the morphology of subsurface layered strata interfaces, primarily exhibiting continuity, while diffracted waves reflect important information about irregular anomalies in the subsurface medium, primarily exhibiting discontinuity. For beaded reservoirs, which are irregular subsurface geological anomalies, especially for seismic imaging of deep, complex, heterogeneous carbonate karst fracture-vuggy reservoirs in the Tarim Basin, it is essential to focus on utilizing diffracted wave information and achieving accurate imaging in seismic data processing. In actual data, there is no clear boundary between diffraction and reflection, making it difficult to strictly separate diffracted waves from reflection seismic records. Diffracted wave separation can only amplify reflection information originating from lateral discontinuities while suppressing reflection signals from continuous reflection interfaces. In the field of scattered wave (also known as diffracted wave) imaging, Baneroft and Geiger et al. (1994) first proposed the concept of equivalent offset and used common scattering point (CSP) gathers formed by equivalent offset for pre-stack migration, and proposed a converted wave pre-stack migration and velocity analysis method based on CSP gathers; later, Baneroft et al. (1999) continuously improved the migration imaging method based on common scattering point gathers; Bancroft studied the sensitivity of CSP gathers to velocity and pointed out that CSP gathers are not sensitive to initial velocity. In 1996, he further pointed out that CSP gathers have a natural anti-false frequency effect; Geiger and Lithoprobe (1996) proposed a direct migration method for undulating terrain based on equivalent offset; Margrave and Bancroft et al. (1999) proposed a pre-stack migration method based on equivalent wavenumber; Dell and Gajewski et al. (2010) proposed an adaptive common reflection surface element (CRS) stacking imaging method based on CSP gathers. In China, Wang Yong (2000) and Wang Wei (2007) et al. studied pre-stack migration methods based on equivalent offset distances and achieved some results. Gou Limin (2007) studied the application strategy of scattering imaging methods of CSP gathers in low signal-to-noise ratio data such as metal mines. Shen Hongyan (2010) studied the direct imaging algorithm of scattered waves and summarized the processing flow. Zhu Shengwang et al. (2015) proposed a diffraction wave separation technique combining local tilt filtering and frequency spatial domain prediction inversion. This technique can effectively overcome the problem of low tilt information distortion or loss when relying solely on a single tilt difference for diffraction wave separation. The obtained diffraction information is relatively complete, thus giving the diffraction wave imaging results high lateral resolution. Scattering imaging technology is more suitable for beaded anomalous bodies, but targeted beading enhancement techniques on pre-stack scattering gathers need to be improved.

[0004] Therefore, it is necessary to develop a method, device, electronic device, and medium for enhancing beaded imaging.

[0005] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] This invention proposes a method, device, electronic device, and medium for enhancing beaded imaging. Through pre-stack tilt angle scattering gather signal processing, it can enhance the imaging reflection of beaded anomalous objects, highlight the structural features of the beads, and thus improve imaging for confirming the location of beads, identifying the presence of weak beads, and highlighting beaded targets.

[0007] In a first aspect, embodiments of this disclosure provide a method for enhancing beaded imaging, including:

[0008] Based on the range of tilt angles with strong layered reflection energy in the pre-stack tilt angle gather response of the beads, the tilt angle ranges of the two targets are determined.

[0009] Energy enhancement is performed on the tilt gather within the two target tilt angle ranges respectively;

[0010] The tilt gathers are superimposed to obtain the final imaging data volume.

[0011] Preferably, determining the target tilt angle range includes:

[0012] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0013] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle.

[0014] The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

[0015] Preferably, determining the target tilt angle range includes:

[0016] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0017] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the tilt angle corresponding to the tilt angle signal channel is determined as the second threshold tilt angle.

[0018] The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

[0019] Preferably, within the first target tilt angle range, the energy of the horizontal in-phase axis of the tilt gather is enhanced.

[0020] Preferably, within the second target tilt angle range, conventional energy enhancement is performed on the tilt gather.

[0021] Preferably, the process of superimposing the tilt gathers to obtain the final imaging data volume includes:

[0022] The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0;

[0023] The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1.

[0024] The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2.

[0025] By superimposing all the above tilt gathers, the final imaging data volume is obtained.

[0026] Preferably, the final imaging data volume is:

[0027] E=e0*E0+e1*E1+e2*E2 (1)

[0028] Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

[0029] As one specific implementation of this disclosure,

[0030] Secondly, embodiments of this disclosure also provide a beaded imaging enhancement device, comprising:

[0031] The target tilt angle range determination module determines two target tilt angle ranges based on the tilt angle range with strong layered reflection energy in the pre-stack tilt angle gather response of the beads.

[0032] The energy enhancement module enhances the energy of the tilt gather within the two target tilt angle ranges respectively;

[0033] The overlay module overlays the tilt gathers to obtain the final imaging data volume.

[0034] Preferably, determining the target tilt angle range includes:

[0035] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0036] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle.

[0037] The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

[0038] Preferably, determining the target tilt angle range includes:

[0039] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0040] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the tilt angle corresponding to the tilt angle signal channel is determined as the second threshold tilt angle.

[0041] The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

[0042] Preferably, within the first target tilt angle range, the energy of the horizontal in-phase axis of the tilt gather is enhanced.

[0043] Preferably, within the second target tilt angle range, conventional energy enhancement is performed on the tilt gather.

[0044] Preferably, the process of superimposing the tilt gathers to obtain the final imaging data volume includes:

[0045] The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0;

[0046] The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1.

[0047] The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2.

[0048] By superimposing all the above tilt gathers, the final imaging data volume is obtained.

[0049] Preferably, the final imaging data volume is:

[0050] E=e0*E0+e1*E1+e2*E2 (1)

[0051] Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

[0052] Thirdly, embodiments of this disclosure also provide an electronic device, the electronic device comprising:

[0053] Memory, which stores executable instructions;

[0054] A processor that executes the executable instructions in the memory to implement the beaded imaging enhancement method.

[0055] Fourthly, embodiments of this disclosure also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the aforementioned beaded imaging enhancement method.

[0056] Its beneficial effects are as follows:

[0057] For seismic imaging of beaded oil and gas reservoirs, this invention extracts the scattering characteristic signals corresponding to the beads from the pre-stack dip angle imaging gathers, performs targeted energy enhancement processing, and then stacks the processed gathers. In the resulting seismic image, the structural imaging of such beaded oil and gas reservoirs can be highlighted, providing a beaded structural imaging data volume with a high signal-to-noise ratio.

[0058] The methods and apparatus of the present invention have other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0059] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same parts.

[0060] Figure 1 A flowchart illustrating the steps of a beaded imaging enhancement method according to an embodiment of the present invention is shown.

[0061] Figure 2a and Figure 2b Schematic diagrams of the pre-stack tilt angle gathers corresponding to the beaded and beaded imaging traces in an imaging profile according to an embodiment of the present invention are shown respectively.

[0062] Figure 3aand Figure 3b Schematic diagrams of the tilt gathers within the tilt angle range of the first target before and after horizontal energy enhancement according to an embodiment of the present invention are shown respectively.

[0063] Figure 4a and Figure 4b Schematic diagrams of the tilt gathers within the tilt angle range of the second target before and after energy enhancement according to an embodiment of the present invention are shown respectively.

[0064] Figure 5a and Figure 5b Schematic diagrams of the initial gather pure stacked imaging data volume and the final imaging data volume according to an embodiment of the present invention are shown respectively.

[0065] Figure 6 A block diagram of a beaded imaging enhancement device according to an embodiment of the present invention is shown.

[0066] Explanation of reference numerals in the attached figures:

[0067] 201. Target tilt angle range determination module; 202. Energy enhancement module; 203. Overlay module. Detailed Implementation

[0068] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0069] This invention provides a method for enhancing beaded imaging, comprising:

[0070] Based on the range of tilt angles with strong layered reflection energy in the pre-stack tilt angle gather response of the beads, two target tilt angle ranges are determined; in one example, determining the target tilt angle range includes:

[0071] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0072] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle.

[0073] The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

[0074] In one example, determining the target tilt angle range includes:

[0075] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0076] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the second threshold dip angle.

[0077] The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

[0078] Specifically, the range of tilt angles in which the beads exhibit relatively stronger reflected energy compared to the layered structure in the pre-stack tilt angle gather response was identified:

[0079] In tilt-angle gathers, beads, acting as anomalies, generally correspond to a horizontally layered in-phase axis response, with the energy of the in-phase axis gradually decreasing as the tilt angle increases. In contrast, layered reflection gathers exhibit a hyperbolic response, with the energy reaching its maximum at the hyperbola's apex, and the hyperbolic in-phase axis energy rapidly decreasing as the tilt angle increases or decreases. Based on these characteristics, beads generally exhibit stronger energy than layered media in the medium to high tilt angle range.

[0080] Open the dip gather containing the beaded geological points and examine the difference between the energy A of the hyperbolic phase axis corresponding to the layered geological body and the energy B of the horizontal phase axis corresponding to the beaded geological body in a specific dip angle signal trace. When energy B is greater than or equal to energy A, the dip angle C1 corresponding to this trace is determined as the first threshold dip angle, and the angle range D1 with dip angles greater than or equal to C1 is the first target dip angle range. When B is greater than or equal to A*m (m is greater than or equal to 1.5), the dip angle C2 corresponding to this trace is determined as the second threshold dip angle, and the angle range with dip angles greater than or equal to C2 is set as D2, which is the second target dip angle range. Generally, the range D1 includes the range D2.

[0081] Energy enhancement is performed on the tilt gather within the two target tilt angle ranges respectively; in one example, energy enhancement is performed on the horizontal in-phase axis of the tilt gather within the first target tilt angle range.

[0082] In one example, conventional energy enhancement is performed on the tilt gather within the second target tilt angle range.

[0083] Specifically, within the first target dip angle range, because the beaded geological bodies possess the energy characteristic of a horizontally in-phase axis at the dip angle convergence point, while layered geological bodies or other geological bodies do not possess this characteristic, this reinforcement can strengthen the beaded structure. This horizontally in-phase axis energy reinforcement can be applied to the depth range where the beaded structure is located, or simply to all depths within the dip angle range. Targeting only the depth range where the beaded structure is located results in a significant strengthening effect.

[0084] Within the second target tilt angle range, because the energy B of the beads is greater than the energy A of the layered reflection, after strengthening the energy of each channel within this angle range, and then superimposing the channels, the bead imaging can be highlighted.

[0085] By superimposing tilt gathers, the final imaging data volume is obtained. In one example, superimposing tilt gathers to obtain the final imaging data volume includes:

[0086] The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0;

[0087] The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1.

[0088] The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2.

[0089] By superimposing all the above tilt gathers, the final imaging data volume is obtained.

[0090] In one example, the final imaging data volume is:

[0091] E=e0*E0+e1*E1+e2*E2 (1)

[0092] Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

[0093] This invention is based on pre-stack tilt scattering gathers. It targets the characteristic signal portion of the beads in the tilt scattering gathers for enhancement. Then, during superposition, it selects the characteristic signal portion corresponding to the beads in the tilt scattering gathers for superposition. Thus, through pre-stack scattering gather processing, the final image result with enhanced beads is obtained.

[0094] The present invention also provides a beaded imaging enhancement device, comprising:

[0095] The target tilt angle range determination module determines two target tilt angle ranges based on the tilt angle range with strong layered reflection energy in the pre-stack tilt angle gather response of the beads. In one example, determining the target tilt angle range includes:

[0096] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0097] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle.

[0098] The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

[0099] In one example, determining the target tilt angle range includes:

[0100] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0101] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the second threshold dip angle.

[0102] The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

[0103] Specifically, the range of tilt angles in which the beads exhibit relatively stronger reflected energy compared to the layered structure in the pre-stack tilt angle gather response was identified:

[0104] In tilt-angle gathers, beads, acting as anomalies, generally correspond to a horizontally layered in-phase axis response, with the energy of the in-phase axis gradually decreasing as the tilt angle increases. In contrast, layered reflection gathers exhibit a hyperbolic response, with the energy reaching its maximum at the hyperbola's apex, and the hyperbolic in-phase axis energy rapidly decreasing as the tilt angle increases or decreases. Based on these characteristics, beads generally exhibit stronger energy than layered media in the medium to high tilt angle range.

[0105] Open the dip gather containing the beaded geological points and examine the difference between the energy A of the hyperbolic phase axis corresponding to the layered geological body and the energy B of the horizontal phase axis corresponding to the beaded geological body in a specific dip angle signal trace. When energy B is greater than or equal to energy A, the dip angle C1 corresponding to this trace is determined as the first threshold dip angle, and the angle range D1 with dip angles greater than or equal to C1 is the first target dip angle range. When B is greater than or equal to A*m (m is greater than or equal to 1.5), the dip angle C2 corresponding to this trace is determined as the second threshold dip angle, and the angle range with dip angles greater than or equal to C2 is set as D2, which is the second target dip angle range. Generally, the range D1 includes the range D2.

[0106] The energy enhancement module enhances the energy of the tilt gather within the two target tilt angle ranges respectively; in one example, the energy of the horizontal in-phase axis of the tilt gather is enhanced within the first target tilt angle range.

[0107] In one example, conventional energy enhancement is performed on the tilt gather within the second target tilt angle range.

[0108] Specifically, within the first target dip angle range, because the beaded geological bodies possess the energy characteristic of a horizontally in-phase axis at the dip angle convergence point, while layered geological bodies or other geological bodies do not possess this characteristic, this reinforcement can strengthen the beaded structure. This horizontally in-phase axis energy reinforcement can be applied to the depth range where the beaded structure is located, or simply to all depths within the dip angle range. Targeting only the depth range where the beaded structure is located results in a significant strengthening effect.

[0109] Within the second target tilt angle range, because the energy B of the beads is greater than the energy A of the layered reflection, after strengthening the energy of each channel within this angle range, and then superimposing the channels, the bead imaging can be highlighted.

[0110] The overlay module overlays tilt gathers to obtain the final imaging data volume. In one example, overlaying tilt gathers to obtain the final imaging data volume includes:

[0111] The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0;

[0112] The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1.

[0113] The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2.

[0114] By superimposing all the above tilt gathers, the final imaging data volume is obtained.

[0115] In one example, the final imaging data volume is:

[0116] E=e0*E0+e1*E1+e2*E2 (1)

[0117] Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

[0118] This invention is based on pre-stack tilt scattering gathers. It targets the characteristic signal portion of the beads in the tilt scattering gathers for enhancement. Then, during superposition, it selects the characteristic signal portion corresponding to the beads in the tilt scattering gathers for superposition. Thus, through pre-stack scattering gather processing, the final image result with enhanced beads is obtained.

[0119] The present invention also provides an electronic device, comprising: a memory storing executable instructions; and a processor executing the executable instructions in the memory to implement the above-described beaded imaging enhancement method.

[0120] The present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for enhancing beaded imaging.

[0121] To facilitate understanding of the solutions and effects of the embodiments of the present invention, four specific application examples are given below. Those skilled in the art should understand that these examples are merely for the purpose of understanding the present invention, and any specific details therein are not intended to limit the present invention in any way.

[0122] Example 1

[0123] Figure 1 A flowchart illustrating the steps of a beaded imaging enhancement method according to an embodiment of the present invention is shown.

[0124] like Figure 1 As shown, the beaded imaging enhancement method includes: step 101, determining two target tilt angle ranges based on the tilt angle range where the layered reflection energy is strong in the pre-stack tilt angle gather response of the beads; step 102, performing energy enhancement on the tilt angle gathers within the two target tilt angle ranges respectively; and step 103, superimposing the tilt angle gathers to obtain the final imaging data volume.

[0125] Taking a two-dimensional data line from a specific oil and gas exploration block as an example:

[0126] Figure 2a and Figure 2b Schematic diagrams of the pre-stack tilt angle gathers corresponding to the beaded and beaded imaging traces in an imaging profile according to an embodiment of the present invention are shown respectively.

[0127] like Figure 2a As shown, in imaging trace 1192 of the Crossline in the imaging profile, at point B at a depth of 4755 ms, there is a typical beaded structure. Figure 2bFrom the right-hand tilt gather, it can be seen that this string of beads, as an anomalous body, corresponds to a horizontal layered phase axis E. As the tilt angle increases, the energy of the phase axis gradually weakens. Near point A at 4600ms in this gather, there are beads on both the left and right sides. This point is located between two beads. In the tilt gather, this point also has a horizontal layered phase axis with slight energy. However, since this gather is an azimuth tilt gather, the horizontal phase axis becomes a sinusoidal wave axis D along the horizontal direction.

[0128] And in Figure 2a At points A (4525 ms) and G (5275 ms) in imaging channel Crossline 1192, there are horizontally strong layered reflective interfaces. These interfaces are located at... Figure 2b The inclination angle concentration corresponds to a single-sided hyperbolic phase axis feature with its vertex at an inclination angle of 0, where point A corresponds to the C-axis and point G corresponds to the F-axis. The strong layered reflection phase axis at 4525ms in the profile imaging channel partially masks the imaging effect of the two beads below.

[0129] Through actual measurements, the hyperbolic in-phase axis C of the tilt gather corresponding to the layered reflection at imaging channel 4525msA was found to be approximately equal in energy to the horizontal in-phase axis D corresponding to the bead at a tilt angle of 11.2 degrees. The values ​​are 489412 and 478100 respectively. Assuming a threshold value C1 = 11.2 degrees, the tilt angle range of the first target is (11.2 degrees, 90 degrees). At a tilt angle of 21 degrees, the energy of the C-axis is 5642, and the energy of the D-axis is 66781, a difference of nearly 10 times. Assuming a threshold value C2 = 21 degrees, the tilt angle range of the second target is (21 degrees, 90 degrees).

[0130] Figure 3a and Figure 3b Schematic diagrams of the tilt gathers within the tilt angle range of the first target before and after horizontal energy enhancement according to an embodiment of the present invention are shown respectively.

[0131] Within the first target tilt angle range, the energy of the horizontal in-phase axis of the tilt gather is enhanced. A comparison of the horizontal energy before and after enhancement is shown below. Figure 3a , Figure 3b As shown, it can be observed that the energy at medium to large tilt angles is significantly greater than the energy at relatively small angles before enhancement. In particular, the energy corresponding to the horizontal in-phase axis of the beads is effectively enhanced. Figure 3a , Figure 3b X-line is the same as Crossline, such as Figure 3a and Figure 2b It's the same data, just displayed using different display modules.

[0132] Figure 4a and Figure 4b Schematic diagrams of the tilt gathers within the tilt angle range of the second target before and after energy enhancement according to an embodiment of the present invention are shown respectively.

[0133] Within the second target tilt angle range, conventional energy enhancement is applied to the tilt gather. Within the second target tilt angle range, because the energy of the beaded array is greater than the energy of the layered reflection, i.e. Figure 2b The energies corresponding to D and E are greater than the C-axis energies at different depths at the same angle. By superimposing the enhanced trace energies within this second target tilt angle range, the beaded imaging can be effectively enhanced. In this example, conventional spherical diffusion compensation is applied to the depth range of 4500ms to 5500ms, and the effect is as follows... Figure 4a , Figure 4b As shown, it can be observed that the energy of the in-phase axis of the beads and the relative energy values ​​at large angles of each track have been further enhanced.

[0134] Figure 5a and Figure 5b Schematic diagrams of the initial gather pure stacked imaging data volume and the final imaging data volume according to an embodiment of the present invention are shown respectively.

[0135] By superimposing the tilt gathers, the final imaging data volume is obtained. In this example, e0 = e1 = e2 = 1. From Figure 5a , Figure 5b It can be observed that the anomalies at points A, B, M, and N show a relatively significant enhancement in relative energy after amplification, and the energy of some other anomalies between 4.5s and 5.2s is also relatively enhanced. This is because these geological blocks also possess certain scattering characteristics, and the time window covers the entire depth, meaning that many anomalies with certain scattering characteristics will be enhanced to some extent, but the one that is enhanced the most is the target bead string in this study.

[0136] Example 2

[0137] Figure 6 A block diagram of a beaded imaging enhancement device according to an embodiment of the present invention is shown.

[0138] like Figure 6 As shown, the beaded imaging enhancement device includes:

[0139] The target tilt angle range determination module 201 determines two target tilt angle ranges based on the tilt angle range with strong layered reflection energy in the pre-stack tilt angle gather response of the beads.

[0140] The energy enhancement module 202 enhances the energy of the tilt gather within the two target tilt angle ranges respectively;

[0141] The overlay module 203 overlays the tilt gathers to obtain the final imaging data volume.

[0142] As an optional approach, determining the target tilt angle range includes:

[0143] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0144] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle.

[0145] The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

[0146] As an optional approach, determining the target tilt angle range includes:

[0147] For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body.

[0148] When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the second threshold dip angle.

[0149] The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

[0150] As an alternative, the energy of the horizontal phase axis of the tilt gather is enhanced within the first target tilt angle range.

[0151] As an alternative, conventional energy enhancement can be performed on the tilt gather within the second target tilt angle range.

[0152] As an optional approach, tilt gathers can be overlaid to obtain the final imaging data volume, which includes:

[0153] The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0;

[0154] The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1.

[0155] The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2.

[0156] By superimposing all the above tilt gathers, the final imaging data volume is obtained.

[0157] As an optional approach, the final imaging data volume is:

[0158] E=e0*E0+e1*E1+e2*E2 (1)

[0159] Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

[0160] Example 3

[0161] This disclosure provides an electronic device comprising: a memory storing executable instructions; and a processor executing the executable instructions in the memory to implement the aforementioned beaded imaging enhancement method.

[0162] An electronic device according to an embodiment of the present disclosure includes a memory and a processor.

[0163] This memory is used to store non-transitory computer-readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory. The non-volatile memory may, for example, include read-only memory (ROM), hard disk, flash memory, etc.

[0164] The processor may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of this disclosure, the processor is used to execute computer-readable instructions stored in the memory.

[0165] Those skilled in the art will understand that, in order to solve the technical problem of how to achieve a good user experience, this embodiment may also include well-known structures such as communication buses and interfaces, and these well-known structures should also be included within the protection scope of this disclosure.

[0166] For a detailed description of this embodiment, please refer to the corresponding descriptions in the foregoing embodiments, which will not be repeated here.

[0167] Example 4

[0168] This disclosure provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the aforementioned beaded imaging enhancement method.

[0169] A computer-readable storage medium according to embodiments of the present disclosure stores non-transitory computer-readable instructions. When these non-transitory computer-readable instructions are executed by a processor, all or part of the steps of the methods described in the foregoing embodiments of the present disclosure are performed.

[0170] The aforementioned computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or portable hard drive), media with built-in rewritable non-volatile memory (e.g., memory card), and media with built-in ROM (e.g., ROM cartridge).

[0171] Those skilled in the art should understand that the above description of the embodiments of the present invention is only intended to illustrate the beneficial effects of the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to any of the examples given.

[0172] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for enhancing beaded imaging, characterized in that, include: Based on the range of tilt angles with strong layered reflection energy in the pre-stack tilt angle gather response of the beads, the tilt angle ranges of the two targets are determined. Energy enhancement is performed on the tilt gather within the two target tilt angle ranges respectively; The tilt gathers are superimposed to obtain the final imaging data volume; Determining the target tilt angle range includes: For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body. When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle. The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

2. The beaded imaging enhancement method according to claim 1, wherein, Determining the target tilt angle range includes: For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body. When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the set multiplier of the energy of the hyperbolic phase axis corresponding to the layered geological body, the tilt angle corresponding to the tilt angle signal channel is determined as the second threshold tilt angle. The range of tilt angles that are greater than or equal to the second threshold value is defined as the second target tilt angle range.

3. The beaded imaging enhancement method according to claim 2, wherein, Within the first target tilt angle range, the energy of the horizontal phase axis of the tilt gather is enhanced.

4. The beaded imaging enhancement method according to claim 3, wherein, Within the second target tilt angle range, conventional energy enhancement is applied to the tilt gather.

5. The beaded imaging enhancement method according to claim 4, wherein, The final imaging data volume obtained by superimposing the tilt gathers includes: The gathers across the entire tilt angle range are stacked in a conventional manner to obtain the stacked data volume E0; The tilt gathers within the tilt angle range of the first target after energy enhancement are superimposed to obtain the stacked data volume E1. The tilt gathers within the tilt angle range of the second target after energy enhancement are superimposed to obtain the stacked data volume E2. By superimposing all the above tilt gathers, the final imaging data volume is obtained.

6. The beaded imaging enhancement method according to claim 5, wherein, The final imaging data volume is: E=e0 E0+ e1 E1+ e2 E2 (1) Where E is the final imaging data volume, and e0, e1, and e2 are the adjustment parameters corresponding to E0, E1, and E2, respectively.

7. A beaded imaging enhancement device, characterized in that, include: The target tilt angle range determination module determines two target tilt angle ranges based on the tilt angle range with strong layered reflection energy in the pre-stack tilt angle gather response of the beads. The energy enhancement module enhances the energy of the tilt gather within the two target tilt angle ranges respectively; The overlay module overlays the tilt gathers to obtain the final imaging data volume; Determining the target tilt angle range includes: For the dip angle signal traces of the dip gather containing beaded imaging points, determine the energy of the hyperbolic phase axis corresponding to the layered geological body and the energy of the horizontal phase axis corresponding to the beaded geological body. When the energy of the horizontal phase axis corresponding to the beaded geological body is greater than or equal to the energy of the hyperbolic phase axis corresponding to the layered geological body, the dip angle corresponding to the dip angle signal channel is determined as the first threshold dip angle. The first target tilt angle range is defined as the range of tilt angles that are greater than or equal to the first threshold value.

8. An electronic device, characterized in that, The electronic device includes: Memory, which stores executable instructions; A processor that executes the executable instructions in the memory to implement the beaded imaging enhancement method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the beaded imaging enhancement method according to any one of claims 1-6.

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