Posts Tagged SEG

SEG Continuing Education Courses

Posted by on Sunday, 18 December, 2011

Houston, TX 23-26 January 2012

Seismic Data Acquisition
Seismic Data Processing

Seismic Data Interpretation

Potential Fields/Non-Seismic

Near-Surface Geophysics

Exploration & Production Geophysics


Gravity and magnetics for explorationists

Posted by on Thursday, 20 October, 2011

25-26 January 2012
3-4 November 2012

Duration: two days

This course is designed for geologists and geophysicists with interests in potential fields and regional tectonics. Presented as a two-day seminar, we concentrate on fundamentals for the first day and tackle advanced topics during the second day. Attendees with little previous experience in gravity and magnetics will find the pace comfortable and the concepts quite accessible. Attendees who have already worked with potential field data will find the first day to be a helpful review of basic concepts and the second day to be quite challenging and thought-provoking.

Course Outline

  • Fundamentals of potential theory
  • Application of the theory to geology of the Earth’s crust
  • Acquisition techniques and parameters for gravity and magnetic surveys
  • Conventional and innovative two-dimensional filtering techniques used to enhance potential field data
  • Magnetic depth estimation techniques
  • Gravity and magnetic gradiometry
  • Airborne gravity methods

The course will include formal lectures, extensive presentation of case histories, computer-based modeling demonstrations and qualitative interpretation of mapped gravity and magnetic data. The students will have an opportunity to work with the computational software during the workshop period. The course is limited to 30 attendees in order to facilitate group discussion and interaction.

Instructor:

Michal Ruder

Michal Ruder received her A.B. cum laude from Bowdoin College with a joint major in geology and physics. She was awarded a Ph.D. in geophysics from the Pennsylvania State University. Her work experience spans government, academic, and industrial research and exploration laboratories. While at NASA, she analyzed satellite gravity and magnetic data from the Seasat and Magsat missions. Ruder’s academic experience includes investigation of conventional gravity and magnetic data as well as teaching, research, and application of image processing techniques and geographic information systems to gravity and magnetic data and satellite multispectral data. She worked for Exxon Production Research Company from 1986 to 1988 as a research geophysicist with emphasis on integration of seismic, gravity, magnetic, and electromagnetic techniques. Wintermoon Geotechnologies, Inc., founded by Ruder in 1996, performs integrated analysis of geophysical and GIS data for exploration purposes. Michal Ruder serves as president and chief geophysicist. Her professional affiliations include SEG, where she is a member of the Continuing Education Committee, AGU, ASPRS, and several local geoscience organizations.


“Black magic in geophysical prospecting” – 75 years ago

Posted by on Thursday, 8 September, 2011

Blau, L (1936). Black magic in geophysical prospecting. Geophysics 1 (1).

Agile: “If you are an exploration geoscientist, you must read it. Then go and get someone else to read it too.

It’s all about how to spot a nut, detect hidden whisky, and fail to find oil with sexual emanations”.


Seismic Acquisition from Yesterday to Tomorrow

Posted by on Thursday, 19 May, 2011
234Elarge

Seismic Acquisition from Yesterday to Tomorrow

Julien Meunier
During the last few years, seismic acquisition has gone through a phase of fast acceleration, attested to by the development of wide-azimuth surveys, the continuous increase in channel count, and the progress in simultaneous shooting. These developments, made possible by technological advancements today, will enable the production of clearer seismic images tomorrow. Seismic Acquisition from Yesterday to Tomorrow (SEG Distinguished Instructor Series No. 14), the companion book for the 2011 SEG/EAGE Distinguished Instructor Short Course, offers a reflection on this evolution. It starts with a short historical overview, followed by discussions of signal and noise. The core of the book is the relationship between acquisition parameters and seismic-image quality. It will provide geoscientists and all those interested in seismic images with the still unconventional view of seismic data acquisition as the first component of seismic imaging.

Published 2011, 226 pages

ISBN 978-1-56080-281-5

Available in print or as an e-book!


SEG SRW 2011 – Inverting the Reservoir

Posted by on Tuesday, 1 March, 2011

A central goal in exploration geophysics is to provide quantitative estimates of subsurface rock properties in 3D to construct reservoir models. This workshop addresses geophysical inversion in reservoir characterization as it is practiced today and as it will be practiced in the future. It will look at existing and emerging inversion techniques, the impact of new data acquisition, appreciation of uncertainties, and interdisciplinary integration. Full waveform inversion, repeat measurements, such as time-lapse seismic and controlled-source electromagnetic data all offer significant uplift in reservoir characterization, but the challenge of integrating across scales and disciplines remains. We therefore welcome oral and poster presentations addressing the following and other topics in reservoir characterization and rock property and fluid content estimation:

  • Full-waveform inversion – for characterization
  • Time-lapse inversion
  • Data integration and joint inversion
    • Inclusion of “non-conventional” data – Multicomponent and borehole seismic, passive seismic; Non-seismic geophysical data
    • Interdisciplinary integration: input from geologists and engineers
    • Methods, e.g., Sequential vs. simultaneous approaches
  • Estimation and use of uncertainty and resolution in inversion, stochastic methods
  • Characterization in structurally complex zones
  • New methods in, and applications of pre- and post-stack amplitude and traveltime inversion.

SEG Courses in West Houston

Posted by on Thursday, 27 January, 2011

28 February – 1 March

3D Seismic Data Acquisition:  An Update on Modern Technologies and Usage Methodologies by Malcolm Lansley

This course will provide information related to recent advances in data acquisition technology, equipment and the methodologies that are being utilized to improve data quality and, in many cases, reduce the cost of 3D survey acquisition. The course is appropriate not only for geophysicists involved in survey design and acquisition, but also for those involved in data processing and interpretation who wish to better understand the potential improvements that can be made. Both marine and land applications will be discussed.

Seismic Imaging of Subsurface Geology (Acquisition, Processing, and Modeling) by Michael Schoenberger

This course is an introduction to quantitative geophysics for geoscientists who have some experience working with seismic data. The course describes both the methodology and the thought processes behind modern approaches to seismic data acquisition, processing, modeling, and imaging.

2-3 March

Gravity and Magnetics for Explorationists by Michal Ruder

This course is designed for geologists and geophysicists with interests in potential fields and regional tectonics. Attendees with little previous experience in gravity and magnetics will find the pace comfortable and the concepts quite accessible. Attendees who have already worked with potential field data will find the first day to be a helpful review of basic concepts and the second day to be quite challenging and thought-provoking.

Petroleum Systems of Deepwater Settings by Paul Weimer

This course provides geophysicists with a broad overview of the petroleum systems of deepwater settings. The course design allows geophysicists to quickly integrate the information into their daily workflow. Lectures are complemented by extensive references to key publications that geophysicists may use to follow up. The course emphasizes the geologic aspects of deepwater deposits.


Right now: SEG – Denver 2010

Posted by on Wednesday, 20 October, 2010

SEG celebrates its 80-th year in Denver, the Mile High City. Click here to attend the world’s largest oil, energy, and mineral exposition showcasing cutting-edge technology for use in exploration and associated industries. The SEG International Exposition is the premier venue for individuals to meet under one roof to discuss new geophysical technologies and how they can be applied to new and existing play areas.  Many innovative geophysical products and services will be introduced at this exhibition including computer software and hardware; seismic acquisition and processing equipment; and educational, consulting, and project-management services..

Oil and gas industry professionals in Denver and the Rocky Mountain region have led the way over the past few years in developing and implementing technology to locate and develop unconventional resources.  The October meeting promises to showcase that technology for geophysical and nongeophysical professionals, as well as showcase the beauty and vibrancy of the Mile High City. Come and enjoy downtown Denver with its many new and old hotels and restaurants.


Forum Non-seismic methods is starting: birth and re-birth of geophysics

Posted by on Sunday, 19 September, 2010

September 20 – 23, 2010
Rio de Janeiro

Brazilian Geophysical Society (SBGf), supported by the Society of Exploration Geophysicists (SEG) and  the Latin American Geophysical Union (ULG) are organizing in 2010 a Forum to focus discussions on the application of non-seismic methods for Oil and Gas Exploration.

Modern geophysics was born with non-seismic methods when Conrad Schlumberger conceived the revolutionary idea of using electrical measurements to map subsurface rock bodies in 1912.

Almost 100 years later non-seismic methods are still revolutionizing the geophysical world with new ideas and methods to help understand and explore the Earth.

Today, the oil industry emphasizes the use of geophysical techniques that have the least environmental impact.  Also, as the large reserves are harder to find and produce, the industry looks for new technologies that can provide crucial information for the exploration and production of these areas in an efficient and more cost-effective way.

We invite examples from offshore and onshore applications of non-seismic methods from South America, Gulf of Mexico, North Sea, Middle East, Russia and others.

The Organizing Committee expects to receive 150 delegates from Brazil and abroad.

Technical program includes:

Electromagnetic Methods;

Potential Fields Methods;

Borehole Geophysics.


SEG courses are coming to Houston

Posted by on Wednesday, 23 June, 2010

27-30 September 2010


27-28 September

Planning and Operating a Land 3D Seismic Survey by Andreas Cordsen and Peter Eick

This course covers all the practical aspects of conducting a successful 3-D survey in a land or transitional zone environment. It is given from the perspective of the explorationist operating the survey. Participants are expected to have a general working knowledge of 2-D seismic data acquisition, processing, and interpretation. Some 3-D experience is helpful but not necessary to understand the course material.

Petroleum Geology for Geophysicists by Ken Wolgemuth

This course is intended to introduce geophysicists who have had no formal training in geology to the principles of geology, petroleum geology and reservoir geology. The course will emphasize the parts of these disciplines that are especially applicable to the work of a geophysicist. Completion of this course will allow the geophysicist to have the insight to apply the earth model to seismic acquisition, processing and interpretation.

29-30 September
Understanding Seismic Anisotropy in Exploration & Exploitation: Hands On by Leon Thomsen

Participants will learn why understanding seismic anisotropy is more important now than ever before, and how to optimize seismic practice to take full advantage of it. This course is updated from the 2002 SEG/EAGE Distinguished Instructor Short Course.

AVO: Seismic Lithology by Mike Graul and Fred Hilterman

While there have been many technical advances in our understanding of using amplitude variations with offset (AVO) for the direct detection of hydrocarbons, there is still much in the way of mysticism and misconception in its treatment/implementation. This seminar provides updates on the current state and future trends of AVO and dispels the mythology attached to this valuable technique. While the course is comprehensive and fast-paced, no special math or physics background is required. Case histories illustrate methodology; exercises and workshops are used frequently to focus on the practical aspects of AVO in predicting lithology and pore fluid. Emphasis is placed on the balance of potential and pitfalls of the technology.


SEG/EAGE Summer Research Workshop is about low frequencies

Posted by on Wednesday, 24 March, 2010

15-20 August 2010
Snowbird, Utah

This five-day meeting in Utah will include proposed topics such as:

  • Sourcing low frequencies both actively and passively
  • Capturing low frequencies in acquisition
  • Preserving signal and suppressing noise in processing
  • Enhancing low frequency content with other geophysical measurements
  • Utilizing low frequencies in imaging and inversion
  • Applying low frequencies and making a difference

The new online source for SEG books within the SEG Digital Library

Posted by on Wednesday, 17 February, 2010

SEG eBooks beta launched in early February 2010 with approximately 35 books, and SEG plans to add 15 more titles within two months. SEG will add new books online as they are published in print and plans to add legacy titles in the years ahead.

SEG eBooks content is searchable via its own search engine or with those covering the SEG Digital Library and Scitation. Browsing is available by title, year, series, and topic. Introductory material and back matter (mostly indexes and references) are free.


SEG meetings, forums, and workshops help you stay on the cutting edge

Posted by on Wednesday, 17 February, 2010

Joint SEG/SPE/AAPG Workshop

Submit your abstract by 5 March to participate in the upcoming “Joint SEG/SPE/AAPG Workshop on Shales: Seal, Reservoir, Source,” 6-9 June in Austin, Texas. The 5 March deadline is fast approaching, apply now.

Now accepting applications for the 2010 D&P Forum
Submit your application before 31 March for the 2010 D&P Forum: CO2 EOR & Sequestration, taking place 18-22 August in Boston, USA.

2010 Summer Research Workshop
Submit an abstract for the upcoming workshop “Subsalt Exploration and Development: Four years later, what’s new in acquisition, imaging, and interpretation?” scheduled 26-29 July at the Squaw Valley Resort in Lake Tahoe, California, USA. The deadline to submit is 20 April.

Denver 2010 Annual Meeting call for papers
The Technical Program Committee invites you to submit your papers for consideration beginning in March. Start preparing your papers for submission by reading the 2010 Abstract Kit.


Some articles from the last GEOPHYSICS Jan-Feb 2010, Issue 1

Posted by on Friday, 29 January, 2010

Mapping reservoirs based on resistivity and induced polarization derived from continuous 3D magnetotelluric profiling: Case study from Qaidam basin, China

Zhanxiang He,1 Zuzhi Hu,1 Weifeng Luo,1 and Caifu Wang1
1China National Petroleum Corporation, GME department BGP, Zhuozhou, China.

In Sanfu, Qaidam basin, China, traditional geophysical methods have failed to find subtle hydrocarbon reservoirs. In an attempt to predict anddelineate gas reservoirs, we used a type of magnetotelluric (MT) profiling called 3D continuous electromagnetic profiling (CEMP). Electric logs indicate that gas-bearing formations have high resistivity relative to nongas-bearing formations.

Modeling and analysis of the response of a triaxial, frequency-domain electromagnetic induction sensor to a buried linear conductor

Sean P. McKenna1 and Jason R. McKenna2
1Northrop Grumman Information Systems, Andover, Massachusetts, U.S.A.
2U. S. Army Engineer Research and Development Center, Vicksburg, Mississippi, U.S.A.l

This paper presents analytical modeling results for a triaxial frequency-domain electromagnetic-induction (EMI) sensor over a homogeneous earth containing a long linear conductor. Although the conductor studied is intended to represent an underground wire or pipe, it can represent any subsurface, linear geologic structure that can channel current.

Comprehensive approaches to 3D inversion of magnetic data affected by remanent magnetization

Yaoguo Li,1 Sarah E. Shearer,2

1Colorado School of Mines, Center for Gravity, Electrical, and Magnetic Studies (CGEM), Department of Geophysics, Golden, Colorado, U.S.A.
2Formerly Colorado School of Mines, Center for Gravity, Electrical, and Magnetic Studies (CGEM), Department of Geophysics, Golden, Colorado, U.S.A. Presently Ultra Petroleum Corp., Denver, Colorado, U.S.A. E-mail:

Three-dimensional (3D) inversion of magnetic data to recover a distribution of magnetic susceptibility has been successfully used for mineral exploration during the last decade. However, the unknown direction of magnetization has limited the use of this technique when significant remanence is present. We have developed a comprehensive methodology for solving this problem by examining two classes of approaches and have formulated a suite of methods of practical utility.

Leveling HEM and aeromagnetic data using differential polynomial fitting

Majid Beiki,1 Mehrdad Bastani,1 and Laust B. Pedersen1
1Uppsala University, Department of Earth Sciences, Geophysics, Uppsala, Sweden.

We introduce a new technique to level aerogeophysical data. Our approach is applicable to flight-line data without any need for tie-linemeasurements. The technique is based on polynomial fitting of datapoints in 1D and 2D sliding windows. A polynomial is fitted to data points in a 2D circular window that contains at least three flight lines.

Extraction of structure-based geoelectric models by hybrid genetic algorithms

Irfan Akça1 and Ahmet Tuğrul Basokur1
1Ankara University, Faculty of Engineering, Department of Geophysical Engineering, Tandogan Kampusu, Ankara, Turkey.

A major difficulty in electrical resistivity imaging is the identification ofthe lithologic units, especially in the sedimentary environments. The geologic interpretation generally is realized by visual inspection of the final resistivity section. Although sharp boundary inversion techniques based on a local linearization could allow the delineation of interfaces between geologic units, these techniques will succeed only if an initial model already close to the best solution is available.


The latest book in SEG’s Book Mart

Posted by on Monday, 14 December, 2009

The Misadventures of Interpreter Sam (SEG Geophysical Monograph Series No. 15) is a collection of the first six years of “Interpreter Sam” columns from THE LEADING EDGE. It contains commentary on both the humorous and serious sides of an interpreter’s day from the point of view of the fictitious Interpreter Sam, our Everyman of interpretation. Sam introduces each chapter with a caricature of himself (an interpretation of his own “reflection,” if you will, created by the talented artist David Carman), and in the epilogue, he offers a special gift to his friends in data processing. This book can be read and enjoyed by anyone who has ever interpreted even a single seismic line, by eager students who aspire to be interpreters, and by nongeoscientists who presume that they know how interpreters think.


“That´s great guys!” – the comment on SEG’s facebook wall is concerning…

Posted by on Tuesday, 24 November, 2009

The Society of Petroleum Engineers (SPE) and the Society of Exploration Geophysicists (SEG) have formalized an agreement for intersociety cooperation to benefit their global membership through joint events, programs and services. “This is an exciting opportunity for both societies to build on an already strong relationship to enhance technical knowledge exchange globally that will benefit our members and serve the upstream oil and gas industry,” said Behrooz Fattahi, 2010 SPE president.