https://www.indepthgeo.com/blog daily 0.75 2025-11-12 https://www.indepthgeo.com/blog/regularly-indexed-cs monthly 0.5 2024-10-29 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/ae7eb081-7f72-4339-89a2-4b37d4d76783/Fig1.png General Articles - How Does Regularly-Indexed CS Sampling Work? - Figure 1. (left) Fully sampled signal composed of three superimposed sinusoidal functions. (right) Corresponding fourier transform showing three peaks at specific spatial frequencies. Figure 1. (left) Fully sampled signal composed of three superimposed sinusoidal functions. (right) Corresponding fourier transform showing three peaks at specific spatial frequencies. Gilles Hennenfent and Felix J. Herrmann, (2008), "Simply denoise: Wavefield reconstruction via jittered undersampling," GEOPHYSICS 73: V19-V28. Figure 1. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/cc4a08a6-cfc8-4279-b594-1707c825be34/Fig2.png General Articles - How Does Regularly-Indexed CS Sampling Work? - Figure 2. (left) Conventionally decimated signal taken at every third sample. (right) Corresponding fourier transform showing true peaks (black) and strong coherent aliasing (red). Gilles Hennenfent and Felix J. Herrmann, (2008), "Simply denoise: Wavefield reconstruction via jittered undersampling," GEOPHYSICS 73: V19-V28. Figure 1. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/68e1b857-810c-4dba-bf93-f4fbf66f5587/Fig3.png General Articles - How Does Regularly-Indexed CS Sampling Work? - Figure 3. (left) Regularly-Indexed sampled signal with 1/3rd total samples. (right) Corresponding fourier transform showing true peaks (black) and incoherent random aliasing (red). Gilles Hennenfent and Felix J. Herrmann, (2008), "Simply denoise: Wavefield reconstruction via jittered undersampling," GEOPHYSICS 73: V19-V28. Figure 1. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/578ef4a0-25df-4c41-961b-cc9d40f9efeb/Permian_CSR_cost_resolution2.png General Articles - How Does Regularly-Indexed CS Sampling Work? - Make it stand out Fig. 4. Comparison of Conventional (left), Cost Saving CS-A (center), and Resolution CS-A (right). The conventional data was acquired using a 50 m grid design. Cost Saving CS-A used the same grid with 50% subsampling, reconstructing the original signal while enhancing S/N. Resolution CS-A used the same number of nodes as the conventional design, but reconstructed to a tighter 25 m grid, improving both resolution and S/N. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - How Does Regularly-Indexed CS Sampling Work? - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/practical-compressive-seismic-workflow-land monthly 0.5 2025-08-12 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/89b3ecb0-9b19-4981-b871-9c27396a98f5/Fig_1_preplot.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/d3e0d343-cf13-43d7-bbdb-425ee7842118/Fig_2_conversion.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/aab892a7-005c-4d4c-bfb2-bfe60c8a946a/Fig_3_mcmap.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/abeb61fb-241d-4f08-91ff-36d26e4548c1/Fig_4_acquisition.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/b1c8d3fd-2099-48e8-aff4-29a494dc9ee2/Fig_5_reconstruction.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Practical Compressive Seismic Workflow for Land Acquisition - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/cs-acquisition-random-vs-optimized monthly 0.5 2025-08-12 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/e7cffd43-f9ff-4e18-92f5-30fa45463340/Alt1.jpg General Articles - Compressive Seismic Acquisition - Random vs Optimized - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/70ead8bf-c012-4d56-8864-90ed4087835e/Alt2.jpg General Articles - Compressive Seismic Acquisition - Random vs Optimized - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/f8fded74-1b3c-45cf-8c7a-44336ccb7c43/Alt3.jpg General Articles - Compressive Seismic Acquisition - Random vs Optimized - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Compressive Seismic Acquisition - Random vs Optimized - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/compressive-seismic-recon-is-it-interpolation monthly 0.5 2025-01-16 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/a11387ea-850b-45e4-8a3f-51b8a6a0726a/POCSvsEPOCS_header.jpg General Articles - Compressive Seismic Recon - Is it Interpolation? - Make it stand out 5D Interpolation (5DR) and CS-Recon were applied to conventionally acquired Permian Field data: time (0.63s) and IL view. (Tao Jiang, “Compressive seismic reconstruction with extended POCS for arbitrary irregular acquisition,” SEG Technical Program Expanded Abstracts 2017.) https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Compressive Seismic Recon - Is it Interpolation? - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/cs-survey-design-approaches monthly 0.5 2025-11-12 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/b746e422-1679-46d9-9d9e-c354c612a4bf/Optimally+Adjusted.png General Articles - Compressive Seismic Survey Design: Three Approaches - Make it stand out An example survey design using the optimally adjusted approach. Grey squares/cyan circles are the original shot/receiver points. Red squares/blue circles are the CS shot/receiver points. The CS design has small random shifts along the line direction. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/bb2385eb-bbd2-4f23-b85f-86bdbd52b938/Regularly+Indexed.png General Articles - Compressive Seismic Survey Design: Three Approaches - Make it stand out An example survey design using the regularly indexed approach. Note that the original grid (grey, cyan) is half as dense as the CS grid, which uses the same number of shot/receiver points but can be reconstructed to a 50% smaller bin size (or 4x fold). https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Compressive Seismic Survey Design: Three Approaches - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/compressive-seismic-survey-design-qc monthly 0.5 2025-08-12 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9bafd797-a84a-4550-8848-1b7c0fd25091/regular.png General Articles - Compressive Seismic - Survey Design QC - 2D MC-map of a conventional grid acquisition design. Red (MC = 1) indicates areas of maximally poor reconstruction; blue (MC = 0) indicates stronger reconstruction. 2D MC-map of a conventional grid acquisition design. Red (MC = 1) indicates areas of maximally poor reconstruction; blue (MC = 0) indicates stronger reconstruction. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/17a56d13-b779-4c53-8cb0-75bdb9ed14c8/Alternative.png General Articles - Compressive Seismic - Survey Design QC - 2D MC-map of a randomized jittered acquisition design. Red (MC = 1) indicates areas of maximally poor reconstruction; blue (MC = 0) indicates stronger reconstruction. The randomized jittered design is clearly superior to a conventional design. 2D MC-map of a randomized jittered acquisition design. Red (MC = 1) indicates areas of maximally poor reconstruction; blue (MC = 0) indicates stronger reconstruction. The randomized jittered design is clearly superior to a conventional design. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/510f06e9-c4f2-418f-bd63-0385ab5bc2e1/Grid+node.png General Articles - Compressive Seismic - Survey Design QC - 2D MC-map of a randomized gridded acquisition design. Red indicates poor reconstruction; blue indicates stronger reconstruction. The randomized gridded design has many peaks of maximally poor reconstruction scattered throughout the survey. 2D MC-map of a randomized gridded acquisition design. Red indicates poor reconstruction; blue indicates stronger reconstruction. The randomized gridded design has many peaks of maximally poor reconstruction scattered throughout the survey. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/bbfcb080-a21b-4a50-a2d6-b762a367fae9/IDCS.png General Articles - Compressive Seismic - Survey Design QC - 2D MC-map of In-Depth's Regularly-Indexed Optimized design. Red indicates maximally poor reconstruction; blue indicates stronger reconstruction. This optimized design minimizes spatial aliasing while retaining the advantages of a regular grid. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Compressive Seismic - Survey Design QC - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/compressive-seismic-by-acquisition-type monthly 0.5 2024-10-16 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/d7758beb-db72-4b70-a59a-5b2f14af20ee/Sources.jpg General Articles - Compressive Seismic by Acquisition Type - Make it stand out Fig. 1 - Seismic source lines in Alberta. Pembina Institute photo by David Dodge. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/c5646cb8-ff25-4880-bda7-80ed2ca57c5e/idrop.png General Articles - Compressive Seismic by Acquisition Type - Make it stand out Fig. 2 - iDrop self-guided ocean bottom node. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/970673d8-13f8-46e1-bd72-eac493eb9f61/Land.png General Articles - Compressive Seismic by Acquisition Type - Make it stand out Fig. 3 - Land orthogonal survey before and after CS conversion. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/078ff587-db57-47c1-bc35-f3aef73dae69/Marine.png General Articles - Compressive Seismic by Acquisition Type - Make it stand out Fig. 4 - Marine OBN survey before and after CS conversion. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/f2e834d2-20b9-4ad4-aea1-03af10af0c8a/1Dvs2D.png General Articles - Compressive Seismic by Acquisition Type - Make it stand out Fig. 5 - Signal to Noise Ratio (SNR) as a function of sampling percentage for both 1D and 2D CS Designs. 2D CS consistently shows higher SNR, requiring significantly fewer traces to achieve the same reconstructed data quality. https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/9b4be786-9346-432c-aa55-ea3c4fbf85b4/IDCS_horizontal_hires.png General Articles - Compressive Seismic by Acquisition Type - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/permian-basin-case-study monthly 0.5 2024-10-21 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/4a091c03-534e-4fa9-af0b-6cb0c503ee53/Fig1.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Figure 1: Base survey (left), CS survey (middle), Reconstructed CS survey (right) https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/75c80b2f-4a88-4284-888f-ec536a4dfb73/Fig2.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Figure 2: Base survey fold (left), CS survey fold (middle), Reconstructed CS survey fold (right) https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/f36e39be-bd06-4d83-bacf-f5cc2f751b7a/Fig3.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Figure 3: Maximum near offset: base survey (left), CS survey (middle), Reconstructed CS survey (right) https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/1727279867473-Q2SWF8U3T8RE4HKS4NMN/Fig4.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Figure 4: Maximum far offset: Base survey (left), CS survey (middle), Reconstructed CS survey (right) https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/269d2c32-5efe-4999-ae2b-9e3090e5a80c/Fig5.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Figure 5: Summary of Permian CS-Acquisition Case Study Statistics https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/f2e56c83-9379-4418-b69a-5051070dcf97/IDCS_horizontal_hires.png General Articles - Permian Basin Compressive Seismic Case Study - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.indepthgeo.com/blog/cs-conversion-tesseract-mesa monthly 0.5 2024-10-16 https://images.squarespace-cdn.com/content/v1/66b2513f6f4b4b65d990408c/02d601ba-52f6-4d9d-81cf-d8c47b71b46c/MCmap.png General Articles - Announcement: In-Depth Optimized CS Survey Conversion now available in TesserACT and MESA Our CS Survey Design takes into account the presence of obstacles, clustering points around large holes to minimize the aliasing of spatial frequencies (and maximize reconstructibility) in missing data regions while adhering to your chosen survey design grid. 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