Student Lecture Tour Europe: Dr Connolly - University of Bristol

Probabilistic Seismic Inversion

Date
20 - 20 November
Location
Bristol, United Kingdom
Registration
Closed
Call for papers
Closed

Probabilistic Seismic Inversion

Seismic Probabilistic seismic methods, based on a Bayesian framework, for the estimation of reservoir properties are beginning to be used by the industry. As uptake increases there is much to learn. How should we pre-condition the seismic data? How can we quantify all the uncertainties? What precisely are we able to estimate? How can we best represent the posterior uncertainties? How can we make the most use of the products in an extended workflow, for example for reservoir modelling?
I will explain the basis of probabilistic seismic inversion for reservoir properties, show examples and address some of the questions being posed.

Biography Dr Patrick Connolly

Seismic Probabilistic seismic methods, based on a Bayesian framework, for the estimation of reservoir properties are beginning to be used by the industry. As uptake increases there is much to learn. How should we pre-condition the seismic data? How can we quantify all the uncertainties? What precisely are we able to estimate? How can we best represent the posterior uncertainties? How can we make the most use of the products in an extended workflow, for example for reservoir modelling?

I will explain the basis of probabilistic seismic inversion for reservoir properties, show examples and address some of the questions being posed.

 


This student lecture will review the principles of frequency and time-domain electromagnetic techniques and their applications through some case studies from applied research projects, which implemented the electromagnetic induction methods for near surface-related problems with a focus on the application of these techniques in environmental and engineering studies.
Electromagnetic geophysical methods are powerful tools in mapping the electrical conductivity structures of the ground, particularly for near-surface investigations. Applications are as varied as: general geological mapping; waste site characterization, contaminate plume delineation; hydrogeological investigations; geotechnical investigations of building and road construction sites; location and identification of utilities and unexploded ordnance. Instrument platforms are land-based, in the water, and in the air from airplanes and helicopters. In inductive electromagnetic methods, diffusive wave fields are propagated into the ground and scatter from the subsurface structures. Primary and scattered fields are measured at receiver arrays at the surface or in boreholes. The sources have different forms such as grounded dipoles or ungrounded loops. Resolution and depth discrimination can be achieved by varying the source location relative to the receiver array or by taking measurements over a range of frequencies. Higher frequencies penetrate only shorter distance while lower frequencies have greater penetration according to the concept of skin depth. Near-surface depth of investigations ranges from 1 to 100m.
The objectives of this course are:

  • Provide a review of the basics of electromagnetic methods.
  •  Develop an understanding of how measurements of electromagnetic techniques can be used to provide information about the electrical properties of the subsurface.
  • Develop critical thinking skills and an appreciation of the points of strength and limitations of the different electromagnetic methods when applied to environmental and engineering studies.
  • Provide familiarity with the use of these electromagnetic methods in engineering, geotechnical, hydrological, mineral resources and other environmentally related near surface investigations.

Biography 

Hesham El-Kaliouby is a professor of Geophysics in the National Research Center (NRC) of Egypt 
Prior to joining the NRC, He used to work for Sultan Qaboos University (2012 till 2016), Dr. El-Kaliouby was a consultant in Geophysics for the Saudi Geological Survey (SGS) from 2011-2012 and a Senior Research Associate at Lancaster University, UK from 2009-2011. He also held the position of Associate Professor at King Abdulaziz University (KAU) from 2005-2009. 
Dr. El-Kaliouby holds a bachelor‘s honour degree and master‘s degree in Geophysics, both from Cairo University, Egypt. He received his Ph.D. degree in Geophysics (2001) from Cairo University through a joint education program with the University of Arizona, USA. Dr. El-Kaliouby served as a Postdoctoral Researcher for the University of Arizona, USA from 2002-2004. He serves as a reviewer for many scientific journals including Geophysics, Near Surface Geophysics and Geophysical Prospecting.
Dr. El-Kaliouby founded the EAGE student chapter at Sultan Qaboos University and acted as the faculty advisor for the chapter (2012-2016). SQU student chapter awarded the second best EAGE chapter in 2015.

 

This student lecture will review the principles of frequency and time-domain electromagnetic techniques and their applications through some case studies from applied research projects, which implemented the electromagnetic induction methods for near surface-related problems with a focus on the application of these techniques in environmental and engineering studies.
Electromagnetic geophysical methods are powerful tools in mapping the electrical conductivity structures of the ground, particularly for near-surface investigations. Applications are as varied as: general geological mapping; waste site characterization, contaminate plume delineation; hydrogeological investigations; geotechnical investigations of building and road construction sites; location and identification of utilities and unexploded ordnance. Instrument platforms are land-based, in the water, and in the air from airplanes and helicopters. In inductive electromagnetic methods, diffusive wave fields are propagated into the ground and scatter from the subsurface structures. Primary and scattered fields are measured at receiver arrays at the surface or in boreholes. The sources have different forms such as grounded dipoles or ungrounded loops. Resolution and depth discrimination can be achieved by varying the source location relative to the receiver array or by taking measurements over a range of frequencies. Higher frequencies penetrate only shorter distance while lower frequencies have greater penetration according to the concept of skin depth. Near-surface depth of investigations ranges from 1 to 100m.
The objectives of this course are:

  • Provide a review of the basics of electromagnetic methods.
  •  Develop an understanding of how measurements of electromagnetic techniques can be used to provide information about the electrical properties of the subsurface.
  • Develop critical thinking skills and an appreciation of the points of strength and limitations of the different electromagnetic methods when applied to environmental and engineering studies.
  • Provide familiarity with the use of these electromagnetic methods in engineering, geotechnical, hydrological, mineral resources and other environmentally related near surface investigations.

Biography 

Hesham El-Kaliouby is a professor of Geophysics in the National Research Center (NRC) of Egypt 
Prior to joining the NRC, He used to work for Sultan Qaboos University (2012 till 2016), Dr. El-Kaliouby was a consultant in Geophysics for the Saudi Geological Survey (SGS) from 2011-2012 and a Senior Research Associate at Lancaster University, UK from 2009-2011. He also held the position of Associate Professor at King Abdulaziz University (KAU) from 2005-2009. 
Dr. El-Kaliouby holds a bachelor‘s honour degree and master‘s degree in Geophysics, both from Cairo University, Egypt. He received his Ph.D. degree in Geophysics (2001) from Cairo University through a joint education program with the University of Arizona, USA. Dr. El-Kaliouby served as a Postdoctoral Researcher for the University of Arizona, USA from 2002-2004. He serves as a reviewer for many scientific journals including Geophysics, Near Surface Geophysics and Geophysical Prospecting.
Dr. El-Kaliouby founded the EAGE student chapter at Sultan Qaboos University and acted as the faculty advisor for the chapter (2012-2016). SQU student chapter awarded the second best EAGE chapter in 2015.