Posts Tagged oil and gas

Online Geophysics Lectures and Videos

Posted by on Thursday, 23 January, 2014
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Geophysics Lectures in University of South Alabama:

Introduction to Geophysics; Seismic Stratigraphy; Wave Theory Refraction and Reflection; Petroleum Generation and Migration; The porosity Logs; Gamma ray logs; Electric SP and Resistivity Logs and many other are on KHURRAM TANVIR Official Page

 


Training Course: Gravity and Magnetic Geophysical Methods in Oil Exploration

Posted by on Wednesday, 23 October, 2013
Location:
Calgary, Alberta
Date:
Wednesday, April 9, 2014

8:30 AM – 4:30 PM

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Course Description
This basic one-day course reviews the fundamental geological and physical concepts behind oil exploration using gravity and magnetic methods. It is presented in plain English with minimal math or technical jargon, and it includes hands-on exploration examples and case studies.

Delineation of regional and local fault networks, which gravity and magnetic data enable, is crucial in both conventional and unconventional exploration and production. In frontier regions, these data help to delineate the raised and subsided crustal blocks and depocenters, as well as the distribution of igneous rocks.

The course reviews all stages of gravity and magnetic survey design, as well as data acquisition and geological interpretation. These steps are put in the context of designing and executing overall exploration programs for both conventional and unconventional targets.

A complete set of course materials and lunch is included in this course.

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Who Should Attend
This course is designed for professional and technical personnel who need to understand the basics of gravity and magnetic methods in order to assess their effectiveness in various exploration circumstances. The course is intended for all staff levels including geological, geophysical, administrative and management personnel.
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Course Outline
  • Geological Meaning of Geophysical Anomalies: Anomaly-Lithology Relationships and Relevant Rock Properties
  • Forms of Rock Bodies Encountered in Oil and Mineral Exploration
  • Gravity Exploration Methods
  • Magnetic Exploration Methods
  • Design of Gravity and Magnetic Surveys for Geologic Targets
  • Processing Methods for Gravity and Magnetic Data to Separate and Enhance Desirable Anomalies
  • Data Display and Anomaly Enhancement
  • Exploration Example: Gravity and Magnetic Studies of Alberta Basement Structure
  • Exploration Example: Gravity and Magnetic Studies in a Frontier Basin Offshore British Columbia
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Instructor
Dr. Henry Lyatsky

Henry Lyatsky is a Calgary-based geophysical and geological consultant who has worked across Canada, northern and western U.S., and internationally in oil and mineral exploration.

He was born in St. Petersburg, Russia and moved to Calgary as a teenager. He holds a B.Sc. in geology and geophysics (1985, University of Calgary), an M.Sc. in geophysics (1988, University of Calgary) and a Ph.D. in geology (1992, University of British Columbia). He is the first or sole author of three books (Springer-Verlag) on the regional geology and geophysics of western Canada, two gravity and magnetic atlases of the Alberta Basin (Alberta Geological Survey) and many papers. He is a member of CSEG, MEG and APEGA.

Henry is a past president of the Mineral Exploration Group, a province-wide mining-industry association in Alberta. To avoid the downtown rat-race and congestion, he works from home, enjoys the free space of the Alberta outdoors, and loves nothing better than in-depth history books and good hikes in the mountains.


Potential fields for basement investigations

Posted by on Wednesday, 30 January, 2013

Often not given its due in oil and gas geophysics, knowledge of basement geology can be critical to exploiting reservoirs including the unconventional.

by GRAHAM CHANDLER on JANUARY 24, 2013

There is an article in the last Earth Explorer issue:

New Approach to Basement Studies for Oil and Gas Explorers



2D seismic program in Kenya

Posted by on Thursday, 15 September, 2011

Vanoil Energy Ltd. announces it has completed its 2011 2D seismic program on Block 3B in Kenya. Vanoil’s 100% owned Blocks 3A and 3B in Kenya cover approximately 24,000 square kilometres and are part of the vastly under-explored prolific Cretaceous Central African Rift Basin System in Kenya.

Vanoil’s 2011 seismic program in Block 3B covered approximately 398 line-km and was completed on budget and schedule. The program was designed to cover several leads previously identified on the re-processed 1975 Chevron and the 2010 Vanoil seismic data in Block 3B. The 2011 seismic data is high quality with location, time and amplitude content having been jointly assessed and controlled by the contractors; Bureau Geophysical Prospecting [BGP] and RPS. This premium data has been gathered to further image some specific structural leads and as a reconnaissance programme to identify more new leads in Block 3B. In addition, the 2011 seismic program was also designed to enable Vanoil to improve on the geologic model in the Lamu Basin, one of the three basins identified on the Vanoil Blocks.

The 2011 2D seismic program in Block 3B consisted of 398 kilometres of additional seismic bringing the cumulative total to 845 kilometres of 2D seismic coverage completed by Vanoil to date on Blocks 3A and 3B in 2010/2011.

The 2011 Vanoil 2D seismic programme data will now be sent to Statcom in Calgary Alberta for processing, following which, the data will be interpreted and integrated with the reprocessed and interpreted 1975 Chevron and 2010 Vanoil data. With the newly acquired data, the Company expects to add significantly to the resource assessment incorporated in the previously announced Sproule 51 101 report.

Geology

Most of the Block 3B acreage is located in the Lamu Embayment with a small portion of the block to the northwest probably in the Anza basin. It is also possible that a small area of Block 3B to the northeast is located in the Mochesa basin. The Lamu Embayment basin was initiated in the Karroo [Permo-Triassic] times during which an intra-cratonic, tri-radial rifts system developed in East Kenya. This development of the triple junction rifts system heralded the emergence of proto Indian Ocean and culminated in the failure of one of the rift branch which today constitutes the onshore Lamu Embayment basin. The failed Karroo rift extends to the Block 3B acreage. During the subsequent basin-fill in Block 3B the Karroo sequences have been buried thousands of meters below the oil window. During the Jurassic period, Block 3B area experienced marine transgression into the initial Karroo rift-graben which was accompanied by the deposition of mainly marine carbonates and minor shales under platform depositional systems. Faulting in Block 3B continued to Late Mesozoic and Lower Tertiary with emerging rift depo-centers being filled primarily by sediments deposited under fluvial-lacustrine, deltaic and marine depositional systems. The eastern portion of the Block 3B acreage was under marine influence in Middle Cretaceous during which potential source rocks shales and marine carbonates were deposited. During the lower Tertiary, non-marine continental depositional systems were extensive and similar throughout the Block 3B acreage. In the Upper Tertiary however, the southeastern portion of the Block 3B was under marine transgression that resulted in the deposition of Lower to Middle Miocene marine reefal carbonates, sands and shales. The marine transgression barely reached the Anza graben in the Block 3A. In Block 3B, the Lower-Middle Miocene marine sequence is capped by Pliocene to Quaternary coarse fluvial deposits.


“When seismic isn’t enough”

Posted by on Saturday, 13 August, 2011

Interview with Dr. Michal Ellen Ruder, Wintermoon Geotechnologies Inc on the use of gravity and magnetic methods for Oil and Gas exploration.

1. Under what conditions will gravity methods outdo seismic? Why?

2. In what situations are gravity methods absolutely indispensable if you want results?

3. Can you describe some cases where seismic and gravity methods complement one another?

4. What techniques have you personally developed or enhanced?

5. Gravity/magnetic methods used to be used mainly to tell an explorer where to best place seismic. Nowadays you’re advocating its use as complementary and integrative to seismic as well. What has caused the shift?

6. What has been the hottest development in the past two years with respect to using grav/mag in oil and gas exploration?

The answers are here:

http://www.earthexplorer.com/news/When_seismic_isnt_enough.asp

Michal Ruder


Geosoft: Gravity and magnetic methods for oil exploration

Posted by on Saturday, 13 August, 2011

“Discovering and assessing oil or gas deposits requires integration of information culled from geology, geochemistry, drilling, GIS, seismology, EM, potential fields, and other disciplines.

While seismic exploration remains the primary method of exploring for petroleum, use of gravity and magnetic methods has continued to expand, based on their contribution to reliable evaluations (and recent discoveries) in deeper, more challenging environments such as sub-salt structures and deep sea.”

Advances in processing and interpreting gravity and magnetics

Applying gravity and magnetics in deepwater exploration

Effective use of gravity and magnetic data for oil exploration

http://www.geosoft.com/topics/earth-modelling/gravity-and-magnetic-methods-oil-exploration


Technology tie ups boost seismic sensing capabilities

Posted by on Sunday, 7 August, 2011

Shell and HP have announced a breakthrough in the capability of their jointly developed inertial sensing technology to shoot and record seismic data at much higher sensitivity and at ultra-low frequencies.

The new onshore wireless seismic acquisition system is designed to provide a clearer understanding of the earth’s subsurface, thus increasing prospects for discovering greater quantities of oil and gas to meet the world’s increasing energy needs.

The sensing technology has now been demonstrated to have a noise floor – a measure of the smallest detectable acceleration over a range of frequencies – of 10 nano-g per square root Hertz (ng/rtHz), which is equal to the noise created by the earth’s ocean waves at the quietest locations on earth as defined by the Peterson low noise model. The tests were conducted in the seismic testing vault at the US Geological Survey’s (USGS) Albuquerque Seismological Laboratory facility in New Mexico.

The seismic system uses the breadth of HP’s technology development capabilities as well as Shell’s advanced geophysical expertise in seismic data acquisition systems and operations. As such, this collaboration builds on the core strengths of each company to advance technology in this field.

The system will be delivered by HP Enterprise Services and the company’s IPG. It is based in part on the high-performance sensing technology originally co-developed by HP Labs – the company’s central research arm – along with IPG and Shell research in seismic network design.

Fig. 1. The survey will be flown using BlueQube technology.

http://www.engineerlive.com


R&D in seismic technique

Posted by on Monday, 6 June, 2011

Shell Chief Scientist for Geophysics, Dirk Smit, discusses how innovative technologies — sometimes developed in unusual R&D partnerships — help energy companies to explore for harder-to-find oil and gas resources.


Improved seismic processing with Wacom interactive pen displays

Posted by on Saturday, 22 January, 2011


Sentinel Nautilus – visually about marine seismic

Posted by on Wednesday, 8 December, 2010


Mike Galbraith in Moscow

Posted by on Thursday, 11 November, 2010

Michael Galbraith, Vice President of Seismic Image Software, a Division of GEDCO. Mike has made profound contributions to the science of designing 3D seismic surveys, beginning with his first 3D design program in 1985. Internationally, he is one of Canada’s best known geophysicists because of his teaching – over 70 courses taught over the last 12 years in all corners (well – almost all!) of the world (  http://www.cseg.ca/about/awards/honorary/Mike-Galbraith.cfm).

Mike presents «The Principles and Practice of 3D Design and Processing using the PC based packages OMNI and VISTA» on November 15th in Gubkin State University of Oil and Gas .


Training Course: Gravity and Magnetic Geophysical Methods in Oil Exploration

Posted by on Monday, 20 September, 2010

Calgary, Alberta. November 17, 2010

This basic one-day course reviews the fundamental geological and physical concepts behind oil exploration using gravity and magnetic methods. It is presented in plain English with minimal math or technical jargon, and it includes hands-on exploration examples and case studies.

• Geological Meaning of Geophysical Anomalies: Anomaly-Lithology Relationships and Relevant Rock Properties
• Forms of Rock Bodies Encountered in Oil and Mineral Exploration
• Gravity Exploration Methods
• Magnetic Exploration Methods
• Design of Gravity and Magnetic Surveys for Geologic Targets
• Processing Methods for Gravity and Magnetic Data to Separate and Enhance Desirable Anomalies
• Data Display and Anomaly Enhancement
• Exploration Example: Gravity and Magnetic Studies of Alberta Basement Structure
• Exploration Example: Gravity and Magnetic Studies in a Frontier Basin Offshore British Columbia

Instructor: Dr. Henry Lyatsky is a Calgary-based consultant who has worked across Canada and internationally in hydrocarbon and mineral exploration. He was born in St. Petersburg, Russia and moved to Calgary as a teenager. He holds a B.Sc. in geology and geophysics (1985, University of Calgary), an M.Sc. in geophysics (1988, University of Calgary) and a Ph.D. in geology (1992, University of British Columbia). Henry is the first or sole author of three books (Springer-Verlag) and two atlases (EUB/Alberta Geological Survey) on the regional geology and geophysics of western Canada, as well as many articles and papers. He is a member of CSEG, EAGE, AGU, MEG and APEGGA.