- published: 29 Aug 2011
- views: 360828
Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite/Tovex, a specialized air gun or a seismic vibrator, commonly known by the trademark name Vibroseis. Reflection seismology is similar to sonar and echolocation. Refraction seismology is a geophysical principle (refraction) governed by Snell's Law. Used in the fields of engineering geology, geotechnical engineering and exploration geophysics, seismic refraction traverses (seismic lines) are performed using a seismograph(s) and/or geophone(s), in an array and an energy source. The seismic refraction method utilizes...
Total E&P Nederland has been producing gas in the Dutch continental shelf area since the 1970s. The most recent seismic studies of Total's acreage in the Dutch sector of the North Sea are already 20 years old. This fact, together with declining production and the improvements in production techniques over the years, meant that a seismic feasibility study was essential. The project has a number of distinct stages: the feasibility study, the tender procedure, data acquisition and data processing. The feasibility study was completed towards the end of 2011 and established the parameters for the survey. Five seismic survey companies entered bids for the project, and Fugro Geoteam AS was awarded the contract, worth tens of millions dollars. This 3D seismic project is of immense strategic ...
A helpful animation and explanation of how geoscientists use 3D seismic exploration to find and drill for oil and natural gas energy fuel sources with great accuracy despite those energy resources being buried deep beneath the ground.
John N. Louie, Applied Geophysics class at the University of Nevada, Reno, Lecture 7. http://crack.seismo.unr.edu/ftp/pub/louie/class/492-syll.html Reflection principles - profiling, sounding, NMO, dip. Text: 4.4.3-4.4.8, p. 176-186: W. Telford, L. Geldart, and R. Sheriff, Applied Geophysics, Cambridge Univ. Press, ISBN 0521339383. Seismic overheads 1: p. 33-37: http://crack.seismo.unr.edu/ftp/pub/louie/class/492/overheads/Seismic1.pdf Process your own seismic data with the point-and-click, open-source JRG/Viewmat system from http://crack.seismo.unr.edu/jrg
BroadSeis is the CGG broadband marine solution, combining industry-leading equipment, unique variable depth streamer acquisition techniques and proprietary deghosting and imaging technology. Over 270,000km2 of BroadSeis 3D, including 70,000km2 of BroadSource and 33,000km2 wide-azimuth data has been acquired. From shallow water North Sea and Indonesian prospects to deep water Gulf of Mexico and West Africa, we have demonstrated BroadSeis' ability to emit, record and process six octaves of data, including ultra-low frequencies in the 2.5 - 5 Hz range, enhancing penetration and illumination below complex overburdens such as subsalt and sub-basalt environments.
Seismic exploration The second part of the new Wintershall series on oil looks at seismic exploration. Wintershall uses modern technologies such as 3D and seismic surveys to increase the discovery rate of crude oil.