GB1111911A - Seismic exploration methods and apparatus - Google Patents
Seismic exploration methods and apparatusInfo
- Publication number
- GB1111911A GB1111911A GB112266A GB112266A GB1111911A GB 1111911 A GB1111911 A GB 1111911A GB 112266 A GB112266 A GB 112266A GB 112266 A GB112266 A GB 112266A GB 1111911 A GB1111911 A GB 1111911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suppressed
- traces
- involving
- sections
- trace
- 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 title abstract 3
- 238000012937 correction Methods 0.000 abstract 5
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 230000000007 visual effect Effects 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 230000001934 delay Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
Classifications
-
- 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
- G01V1/362—Effecting static or dynamic corrections; Stacking
-
- 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
- G01V2210/52—Move-out correction
-
- 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
- G01V2210/53—Statics correction, e.g. weathering layer or transformation to a datum
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1,111,911. Seismic prospecting. ATLANTIC RICHFIELD CO. 10 Jan., 1966 [29 Jan., 1965], No. 1122/66. Heading H4D. In a method for compositing a plurality of seismic traces recorded using a corresponding plurality of horizontal spacings of shot-point and geophone and using a common subsurface reflection point, static and dynamic corrections are applied to the traces and the effect of frequency distortion due to the dynamic corrections is substantially eliminated from the summation of the corrected traces by suppressing initial sections of the corrected traces where dynamic corrections are greater than a predetermined value. The dynamic correction to be applied to a trace increases with the shot-point to geophone spacing and decreases with increased depth of the reflecting subsurface formation, and is thus a function of the angle of reflection of a seismic signal at a subsurface formation. In one embodiment, trace sections involving reflection angles greater than 35 degrees are suppressed, sections involving angles between 20 and 35 degrees may optionally be suppressed or suppressed to a lesser degree, and sections involving angles less than 20 degrees are included in their entirety in the summation process. The percentage change in frequency of a seismic signal as a result of time delays imposed in making the dynamic corrections is proportional to the time delay, and in a preferred embodiment those trace sections involving a frequency change of 10% or more are suppressed, those involving a change of between 5 and 10% may optionally be suppressed or suppressed to a lesser degree, and those involving a change of less than 5 % are not suppressed. The frequency change is determined by comparing visual records of the original seismic data and the corrected seismic data. A visual record is prepared from the composite of the unsuppressed traces and unsuppressed trace sections. Details of a circuit for suppressing the initial section of a trace for a selected length of time are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US42903865A | 1965-01-29 | 1965-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1111911A true GB1111911A (en) | 1968-05-01 |
Family
ID=23701512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB112266A Expired GB1111911A (en) | 1965-01-29 | 1966-01-10 | Seismic exploration methods and apparatus |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1548363A1 (en) |
| GB (1) | GB1111911A (en) |
| NL (1) | NL6600877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277984A (en) * | 2014-07-04 | 2016-01-27 | 中国石油化工股份有限公司 | Time-shifting seismic mutual constraint frequency consistency processing method |
-
1966
- 1966-01-10 GB GB112266A patent/GB1111911A/en not_active Expired
- 1966-01-20 DE DE19661548363 patent/DE1548363A1/en active Pending
- 1966-01-24 NL NL6600877A patent/NL6600877A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277984A (en) * | 2014-07-04 | 2016-01-27 | 中国石油化工股份有限公司 | Time-shifting seismic mutual constraint frequency consistency processing method |
| CN105277984B (en) * | 2014-07-04 | 2018-02-02 | 中国石油化工股份有限公司 | A kind of time-lapse seismic mutually constrains frequency invariance processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1548363A1 (en) | 1970-04-16 |
| NL6600877A (en) | 1966-08-01 |
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