- published: 29 Aug 2011
- views: 429768
This short video explains -- to a non-seismologist -- the concept of seismic migration. Common Midpoint Stack, which was state of the art until the early 1970's, was able to produce seismic images with good signal-to-noise. However, the seismic events tend to be mis-positioned and cross one another, particularly when there is geologic dip. Migration is the process of correcting these dip and positioning errors as an automatic digital procedure. Only the seismic velocity must be known (which, unfortunately, is no small feat in many areas!).
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.
"Seismic migration" is the process by which seismic events are geometrically re-located in either space or time to the location the event occurred in the subsurface rather than the location that it was recorded at the surface, thereby creating a more accurate image of the subsurface. This process is necessary to overcome the limitations of geophysical methods imposed by areas of complex geology, such as: faults, salt bodies, folding, etc. Migration moves dipping reflectors to their true subsurface positions and collapses diffractions, resulting in a migrated image that typically has an increased spatial resolution and resolves areas of complex geology much better than non-migrated images. A form of migration is one of the standard data processing techniques for reflection-based geophysi...
Schlumberger EVP of Technology Ashok Belani tells Google Cloud Next ’17 how our partnership with Google is achieving new levels of high-performance computing. https://www.slb.com Belani joined Google Senior VP for Technical Infrastructure Urs Hölzle on the conference stage on March 9, 2017, to address 10,000 conference attendees and live online viewers. “By scaling data, processing workflows, and using advanced algorithms, we can innovate faster than ever,” said Belani. Working closely with Google engineers, Schlumberger is achieving the next level of computing for the oil and gas industry.
Seismic Data Processing This is how I install Promax R5000 Landmark. Promax is a software for seismic data processing. Note: Please don't ask me a license. / seismic acquisition and data processing using seismic software promax for advanced geosciences in seismic exploration by oil and gas company geophysical services geophysical surveys company /
Seismic data acquisition system project-drilling part, including: portable drilling rig, tractor drilling rig and truck mounted drilling rig, vibrator, geophone etc.
Some of the richest energy reserves in the world are just off our US shores waiting to be discovered in a government owned area lying just 3 - 200 miles out to sea. An advanced exploration technique called seismic surveying is the first step to unlock this precious resource needed to ensure America's energy security.
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
John N. Louie, Applied Geophysics class at the University of Nevada, Reno, Lecture 9. http://crack.seismo.unr.edu/ftp/pub/louie/class/492-syll.html Reflection acquisition - phases, spatial aliasing, spreads, stack chart, signal/noise, field strategies. Text: 4.5.1-4.5.2, p. 186-192: W. Telford, L. Geldart, and R. Sheriff, Applied Geophysics, Cambridge Univ. Press, ISBN 0521339383. Seismic overheads 2: p. 1-52: http://crack.seismo.unr.edu/ftp/pub/louie/class/492/overheads/Seismic2.pdf Process your own seismic data with the point-and-click, open-source JRG/Viewmat system from http://crack.seismo.unr.edu/jrg
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...
Lønneberget presents SHIPMAP, a new way to process seismic data, and an idea of how you can make the geological model "on-the-go" as the seismic surveying is taking place. Our idea is represented with a movie made in Adobe AfterEffects.
This is a social science video that answers - What is earthquake? - How does earthquake occur? - What are the different types of waves? An unexpected movement of the Earth's surface is called an earthquake. When two parts of the earth's surface move suddenly in relation to each other along a fault line, due to tectonic forces, an earthquake occurs. A tremendous amount of energy is released in the form of tremors and vibrations, such earthquakes are called 'Tectonic Earthquakes'. The point of origin of an earthquake is called the 'focus', while the point directly above it, on the surface of the earth is called the 'epicentre'. Owing to the strong vibrations around the point of origin, the degree of destruction is greater around the epicentre. The branch of knowledge that deals with the s...
In this compact version of his EAGE Education Tour (EET 5), Jörg Herwanger (Ikon Science, previously Schlumberger) discusses the process of building and calibrating geomechanical models using 3D and 4D seismic data. He analyzes the three main uses that seismic data provide in building geomechanical models: horizon and fault interpretation for building structural models, AVO inversion and rock physics models for creating mechanical property models, and for model calibration. Herwanger elaborates on these three points in two case studies. The first case study presents a 3D exploration geomechanical model. The second study presents a 4D geomechanical model used for field development planning. The accompanying book is available in the EAGE bookshop: http://bookshop.eage.org/Webshop/product_de...
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.
Seismic migration is the process by which seismic events are geometrically re-located in either space or time to the location the event occurred in the subsurface rather than the location that it was recorded at the surface, thereby creating a more accurate image of the subsurface. This process is necessary to overcome the limitations of geophysical methods imposed by areas of complex geology, such as: faults, salt bodies, folding, etc. Migration moves dipping reflectors to their true subsurface positions and collapses diffractions, resulting in a migrated image that typically has an increased spatial resolution and resolves areas of complex geology much better than non-migrated images. A form of migration is one of the standard data processing techniques for reflection-based geophysical m...
Seismic processors are Geophysicists who turn raw seismic (earth vibration) data into a true representation of the subsurface, which helps organizations choose drilling sites for oil and gas reserves.
Seismic Data Processing Tutorial Promax: 3d land seismic geometry / seismic acquisition and data processing using seismic software promax for advanced geosciences in seismic exploration by oil and gas company geophysical services geophysical surveys company /
Presentation by Xinming Wu, graduate student and PhD candidate in the Center for Wave Phenomena at the Colorado School of Mines. Presentation was given at the 2015 Project Review Meeting of the Consortium Project on Seismic Inverse Methods for Complex Structures, May 11-13, 2015.