Articles

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December 2017

Forecasting bitumen state and production from 3C-4D seismic

David Gray and Dragana Todorovic-Marinic

Assessing the liquid state of bitumen and its production is now possible from 4D seismic. From conventional 4D seismic data, steam chamber volume can be determined. From 3C-4D (3-component, 4-dimensional) PS (P-wave down, converted S-wave up) seismic data, the liquid state of the bitumen, immediately produceable bitumen, and future produceable…

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December 2017

Introduction to December Focus: Developments in Groundwater Geophysics

Melvyn Best

Issues related to groundwater continue to grow in importance throughout the world, and geoscience techniques to deal with these issues are developing rapidly. Methods are needed to map the extent and quality of groundwater resources, water depletion and pollution, and subsurface flow related to engineering projects such as dams. Increasingly,…

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December 2017

Interpreted Water Quality Calculated from Borehole Resistivity Measurements in the Gulf Coast Aquifer, Lower Rio Grande Valley, Texas, U.S.A.

John Meyer and Andrea Croskrey

Texas has significant brackish groundwater resources estimated at over 2.7 billion acre-feet within 26 of the 30 designated major and minor aquifers. Brackish groundwater ranges from 1,000 to 10,000 milligrams per liter total dissolved solids (TDS) concentration, which includes the slightly saline and moderately saline zones. The Texas Water Development…

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December 2017

The Application of Airborne Geophysics for Water Exploration

Bill Brown and Flemming Effersø

Airborne electromagnetic methods (AEM) have been widely used for more than 60 years by the oil and mineral industries as a primary exploration method. In the last 30 years, water resource management challenges have prompted the application of AEM methods to basin- or watershed-scale mapping (e.g. Abraham et al., 2012;…

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December 2017

Hydrogeophysical Investigations of Earthen Dams – Two California Case Studies

Bethany L. Burton, Paul A. Bedrosian, Burke J. Minsley, Scott Ikard, Michael H. Powers

Excessive groundwater seepage can be a common engineering concern with earthen dams. The application of geophysical methods, whether for characterization or for long-term monitoring, to help inform mitigation strategies is becoming a more common addition to these investigations. The U.S. Geological Survey (USGS) has completed geophysical investigations at several earthen…

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December 2017

Integrating Airborne Electromagnetic and Gamma Log Data for Regional Aquifer Mapping: Montney Play Area, NE British Columbia

Melvyn Best, Vic Levson, Carlos Salas

The Peace region of NE British Columbia is an important agricultural area. It also contains significant gas reserves in the Montney natural gas play area. Agriculture and gas production require considerable volumes of water. There are also communities and First Nations within the region that require potable water for domestic…

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December 2017

CSEG 2018/2019 Executive Election

CSEG Executive Committee

Summary of candidates for the 2018/2019 CSEG Executive election.

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December 2017

In Memoriam of Barry Korchinski

Neil Rutherford and Barry Johnson

Barry’s honest and pleasant manner earned him professional respect and many friends over the years. The Calgary geophysical industry and his friends will truly miss the quiet, always smiling, always supportive man, who created many years of fond memories for those who knew him.

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October 2017

The Final Shakeout Phase of the 2014 Energy Bear Market is Now Underway – What Happens from There?

Josef Schachter

Many factors have an impact on the energy market and the market for hydrocarbons in particular. As well as addressing the current factors at the time of the DoodleTrain Luncheon the following items will be addressed and analyzed.

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October 2017

Introduction to October Focus: Intro to Seismic Processing

Rob Holt

This month we feature four articles on different aspects of seismic processing. As a whole they capture many of the recent advances in the field of seismic processing, which slowly but surely evolves as time goes by.

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October 2017

6D Interpolation of Seismic Data – Rationale, Practice and FAQs

Mark Ng and Dan Negut

For many reasons, such as acquisition limitations, economic constraints, and merging data of various shooting parameters from different vintages, seismic data needs to be regularized, upsampled, reconstructed and interpolated. Furthermore, a common deliverable of interpolation is regularized prestack data which will improve many state-ofthe- art inversion processes and migration imaging.

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October 2017

A Well-Guided Processing Approach

Regan Kennedy, Josh Curtis, Greg Staples and Kristof De Meersman

In any processing flow countless parameter choices are made, including which processes to apply, what order to apply them in, and how to parametrize them. In seismic processing, many different but sound choices can all produce similar images. These similar images may not be geologically equivalent when examining all products…

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October 2017

Geologically Constrained Anisotropic Depth Imaging in the Central Burma Basin, Onshore Myanmar

Rob Vestrum, Christophe Gonguet and Tim MacArthur

Understanding the local structural styles and sedimentary sequence is key to constraining depth-migration velocity models in structured onshore seismic data. Judicious application of geologic constraints in the model building resulted in compelling imaging improvements on 2D seismic in this structurally complex area.

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October 2017

Seismic Reprocessing for Improved Imaging in the Permian Basin

Rob Holt

Seismic data enables us to visualize the subsurface in three dimensions with sufficient vertical resolution to identify all but the thinnest of our oil and gas reservoirs. Using seismic data, interpreters map changes in reservoir depth, thickness and character between well locations, and identify the larger faults that create potential…

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October 2017

Sonic Velocities and Depth Conversion

Robert Pickering

The current method(s) of converting seismic time data to depth are methods created to work-around the lack of access to an adequate volume of velocity data. Access to sonic velocities provides the opportunity to move all variables of the depth equation into the depth domain where mathematically and geologically correct…

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October 2017

CSEG Distinguished Lecture Tour 2016/2017

Laurie Weston Bellman

It dawned on me about two months after accepting this role as the 12th CSEG Distinguished Lecturer that, aside from being an honour to be chosen, it might be a significant commitment. Dr. Don Lawton (2016/2017 CDL Committee Chair and 2013 CSEG Distinguished Lecturer) had sent out 30-plus emails, copying…

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September 2017

New technologies for permanent reservoir monitoring - the CaMI Field Research Station

Don Lawton

The Containment and Monitoring Institute (CaMI) of CMC Research Institutes, Inc. and the University of Calgary have constructed a Field Research Station (FRS) near Brooks, Alberta, for research into monitoring technologies for containment and conformance of fluids injected into the subsurface.  The FRS is a platform for development and performance…

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September 2017

The (Geo)Science of Safety: How Geoscientists are Making Potash Mines Safer

Craig Funk

Potash, a mineral used primarily in fertilizers, has been mined in the province of Saskatchewan, Canada for some fifty years. When geological disturbances or anomalies are encountered during mining, mining crews exercise extra vigilance because the integrity of the roof can become compromised introducing the potential for exposure to falling rock.…

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September 2017

Introduction to September Focus: Value of the Integration of Geophysics

Paul Hausmanis, Louis Chabot and Elwyn Galloway

The focus of this September issue of the RECORDER magazine is VIG, the Value of the Integration of Geophysics. It is very exciting for the VIG Committee, as part of the CSEG, to host this issue, and we would like to thank the RECORDER Committee for offering us this opportunity.

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September 2017

Geoscientific Data Adds Value in Unconventional Reservoirs: Statistically Quantified

Fernando Alvarado Blohm

A dataset of 25 metrics collected from the annual investment reports of 9 public operators in the Bakken Formation is used for statistical analysis of the value of geoscientific data. According to results of this analysis, for each million dollars invested in the geosciences, P90 reserves increase, on average, by…