GB1112121A - Improvements in the processing of geological and geophysical data - Google Patents
Improvements in the processing of geological and geophysical dataInfo
- Publication number
- GB1112121A GB1112121A GB1715965A GB1715965A GB1112121A GB 1112121 A GB1112121 A GB 1112121A GB 1715965 A GB1715965 A GB 1715965A GB 1715965 A GB1715965 A GB 1715965A GB 1112121 A GB1112121 A GB 1112121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transparency
- alignments
- data
- undesired
- seismic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 abstract 1
- 230000000873 masking effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06E—OPTICAL COMPUTING DEVICES; COMPUTING DEVICES USING OTHER RADIATIONS WITH SIMILAR PROPERTIES
- G06E3/00—Devices not provided for in group G06E1/00, e.g. for processing analogue or hybrid data
- G06E3/001—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/364—Seismic filtering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/46—Systems using spatial filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/50—Corrections or adjustments related to wave propagation
- G01V2210/56—De-ghosting; Reverberation compensation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Mathematical Physics (AREA)
- Nonlinear Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1,112,121. Geophysical prospecting. CONDUCTRON CORPORATION. 23 April, 1965 [27 April, 1964; 24 June, 1964], No. 17159/65. Heading H4D. [Also in Division G2] Geophysical data is processed by recording the data on a transparency and optically converting the transparency to its Fourier transform for analysis or further processing. For removing undesired data from a seismic section comprising a plurality of parallel, variable-area or variable-density traces and corrected for static and normal moveout errors, the section is recorded as a transparency 36 which is illuminated by collimated light from a heliumneon laser 20, 21, 22. The Fourier transform of the transparency (which acts as a diffraction grating) is formed at 44 by lenses 38 and 42 and comprises points of light whose distance from the optic axis is dependent on the spatial frequency of seismic " events " in the traces of the transparency. Alignments of " events " on the traces give alignments of points of light in the transform, the latter alignments appearing at 90 degrees (measured round the optic axis) to the former. An adjustable filter mask 46 blocks undesired frequency components or undesired alignments, e.g. those from multiple reflections of seismic energy, which are oriented differently from desired primary alignments. Lens 42 provides a magnification of the Fourier image to make positioning of mask 46 less critical. The filtered transform is subjected to a further Fourier transformation by a lens 48 and the reconstituted image of the processed transparency is recorded at 54. The reconstituted image at 54 may be observed to determine the optimum adjustment of mask 46 or to provide a basis for designing field recording procedures and other data processing operations for optimum removal of undesired data. Instead of masking off Fourier transform components, the filter 46 may alter the relative phasing of different components by some fraction of a light wavelength. Field recording procedures for obtaining the seismic section are described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36280064A | 1964-04-27 | 1964-04-27 | |
| US377668A US3370268A (en) | 1964-06-24 | 1964-06-24 | Method of processing geological and geophysical data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1112121A true GB1112121A (en) | 1968-05-01 |
Family
ID=27001803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1715965A Expired GB1112121A (en) | 1964-04-27 | 1965-04-23 | Improvements in the processing of geological and geophysical data |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1112121A (en) |
-
1965
- 1965-04-23 GB GB1715965A patent/GB1112121A/en not_active Expired
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