SU817627A1 - Seismic survey method - Google Patents
Seismic survey method Download PDFInfo
- Publication number
- SU817627A1 SU817627A1 SU792784543A SU2784543A SU817627A1 SU 817627 A1 SU817627 A1 SU 817627A1 SU 792784543 A SU792784543 A SU 792784543A SU 2784543 A SU2784543 A SU 2784543A SU 817627 A1 SU817627 A1 SU 817627A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- waves
- seismic
- refracted
- propagation
- zones
- Prior art date
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Description
Изобретение относитс к геофизическим способам разведки, в частности к сейсморазведке, и может быть применено в поисках и разведке, излучении глубинного строени земной коры и при инженерно-геологических изыскани х в услови х вертикально-градиентных сред В способе отраженных волн коррел ци фаз волн производитс в предположении , что волны отражч ны от какойлибо границы раздела, а в случае вертикально-градиентной среды - градиент положительный. Однако это не всегда имеет место. Дл определени скоростей в сло х, покрывающих отражающие границы, при- . мен ют дополнительные работы по. мето .дам преломленных или отраженных волн при различных услови х регистрации ij . Известен способ сейсмической разведки , в котором дл исследовани слоев с пониженной скоростью распространени сейсмических волн регистрируют вертикальную составл ющую продольных волн и горизонтальные составл ющие проход щих обменных поперечньпс волн с различными азимутами на источ ники упругих колебаний, расположенные в различных квадратах поверхности зем ,ли относительно пункта регистрации Я Недостатком этого способа вл етс то, что он не позвол ет выдел ть слои с пониженной скоростью распространени сейсмических волн. Цель изобретени - построение разрезов , содержащих слои с пониженной скоростью распространени сейсмических волн в вертикально-градиентчой среде. Поставленна цель достигаетс тем, что в способе сейсмической разведки, включающем возбуждени упругих колебаний и регистрацию рефрагированных сейсмических волн, на поверхности вы1Р1вл ют зоны отсутстви пр мых рефрагированннх волн, в этих зонах ре- . гистрируют отраженные с разных глубин монотипные, рефрагированные волны , по соотношению кажууц кск скоростей этих волн в точкак наблюдени определ ют действительные скорости их распространейи в среде, по которьм вычисл ют глубины залегани слоев с пониженной скоростью распрос7:ранени сейсмических во н. Возможность регистрации в области первых вступлений (или их фаз) отраженных от внутренних точек градиент кого аномального сло рефрагйрован;ных волн основана на принципа РюйгенThe invention relates to geophysical methods of exploration, in particular seismic exploration, and can be applied in prospecting and exploration, radiation of the deep structure of the earth's crust and in engineering geological surveys under conditions of vertically gradient media. In the method of reflected waves, the correlation of the phases of the waves is produced in assuming that the waves are reflected from some interface, and in the case of a vertically gradient medium, the gradient is positive. However, this is not always the case. To determine the velocities in the layers covering the reflective boundaries, with -. change additional work on. methods of refracted or reflected waves under various conditions of registration ij. The seismic survey method is known, in which to study layers with a reduced seismic wave propagation velocity, the vertical component of the longitudinal waves and the horizontal components of the transmitted exchange transverse waves with different azimuths on the sources of elastic oscillations located in different squares of the earth's surface are measured relative to the point Registration I The disadvantage of this method is that it does not allow the separation of layers with a reduced seismic wave propagation velocity. The purpose of the invention is to construct sections containing layers with a reduced velocity of propagation of seismic waves in a vertically gradient medium. This goal is achieved by the fact that in the seismic survey method, which includes the excitation of elastic oscillations and the registration of refracted seismic waves, zones without direct refracted waves are detected on the surface, in these zones are-. monotypic, refracted waves reflected from different depths enter, according to the ratio of each wave velocity of these waves to the observation point, they determine the actual speed of their propagation in the medium, from which they calculate the depths of the layers with a reduced velocity of spreading 7: wounds of seismic waves. The possibility of recording in the area of the first arrivals (or their phases) reflected from internal points of a gradient of an anomalous layer of refracted waves is based on the Rüigen principle.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792784543A SU817627A1 (en) | 1979-06-22 | 1979-06-22 | Seismic survey method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792784543A SU817627A1 (en) | 1979-06-22 | 1979-06-22 | Seismic survey method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU817627A1 true SU817627A1 (en) | 1981-03-30 |
Family
ID=20835632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792784543A SU817627A1 (en) | 1979-06-22 | 1979-06-22 | Seismic survey method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU817627A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1332225C (en) * | 2004-12-29 | 2007-08-15 | 中国石油天然气集团公司 | Method for eliminating linear and non-linear interference wave by using filtering operation at deep layer domain |
CN102809757A (en) * | 2011-06-03 | 2012-12-05 | 中国水电顾问集团贵阳勘测设计研究院 | Seismic refraction wave exploration method for cross section of river bed and device thereof |
-
1979
- 1979-06-22 SU SU792784543A patent/SU817627A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1332225C (en) * | 2004-12-29 | 2007-08-15 | 中国石油天然气集团公司 | Method for eliminating linear and non-linear interference wave by using filtering operation at deep layer domain |
CN102809757A (en) * | 2011-06-03 | 2012-12-05 | 中国水电顾问集团贵阳勘测设计研究院 | Seismic refraction wave exploration method for cross section of river bed and device thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Fahlquist | Seismic refraction measurements in the western Mediterranean Sea | |
Orcutt et al. | Structure of the East Pacific Rise from an ocean bottom seismometer survey | |
Morton et al. | Structure of the southern Juan de Fuca Ridge from seismic reflection records | |
Pakiser et al. | Geophysical framework of the continental United States | |
Grad et al. | Crustal model of the Bransfield Rift, West Antarctica, from detailed OBS refraction experiments | |
Johnson | Crustal structure between Lake Mead, Nevada, and Mono Lake, California | |
McClain et al. | Geophysical evidence for the absence of a crustal magma chamber under the northern Juan de Fuca Ridge: A contrast with ROSE results | |
Cliet et al. | Anisotropy survey for reservoir definition | |
Peirce et al. | Côte d'Ivoire-Ghana margin: seismic imaging of passive rifted crust adjacent to a transform continental margin | |
Kanasewich et al. | Near‐vertical‐incidence seismic reflections from the “Conrad” discontinuity | |
Cornea et al. | Deep seismic soundings in Romania | |
Sorokin et al. | Crustal structure of the Makarov Basin, Arctic Ocean determined by seismic refraction | |
SU817627A1 (en) | Seismic survey method | |
Luyendyk et al. | Lineations of magnetic anomalies in the northeast Pacafic observed near the ocean floor | |
GB1569581A (en) | Seismic delineation of oi and gas reservoirs using borehole geophones | |
GB1569582A (en) | Seismic delineation of oil and gas reservoirs using borehole geophones | |
Tuthill et al. | Stoneley waves, Lopez Island noise, and deep sea noise from 1 to 5 Hz | |
Robertson et al. | Seismic studies on the grid western half of the Ross Ice Shelf: RIGGS I and RIGGS II | |
US5540093A (en) | Method for optimizing the alignment of a horizontal borehole relative to the strike of rock-layer stress planes | |
Spiess et al. | Detailed geophysical studies on the northern Hawaiian Arch using a deeply towed instrument package | |
Cloetingh et al. | On the use of Rayleigh wave group velocities for the analysis of continental margins | |
Bannister et al. | Seismic scattering and reverberation, Kaingaroa plateau, Taupo Volcanic Zone, New Zealand | |
SU864215A1 (en) | Seismic survey method | |
RU2760889C1 (en) | Method for borehole seismic exploration | |
SU684476A1 (en) | Seismic survey method |