Articles

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January 2016

Gravity Monitoring of 4D Fluid Migration in SAGD Reservoirs – Forward Modelling

E. Judith Elliott and Alexander Braun

The feasibility of time-lapse gravity and gravity gradient monitoring for Steam Assisted Gravity Drainage (SAGD) Reservoirs is investigated. Two major obstacles have prevented the use of time-lapse gravimetry on small scale reservoirs, namely i) the need for sub-μGal sensitivity, and ii) the high noise levels in the vicinity of the…

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January 2016

Using the Scattering Transform to Predict Stratigraphic Units from Well Logs

Ben Bougher and Felix J. Herrmann

Applications of machine learning (ML) have become ubiquitous across many domains in both academia and industry. Voice and facial recognition are now robust features in smart phones and cameras, while text learning and behaviour tracking on the internet have created a commodity market for data. Self-driving cars and spatially aware…

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January 2016

Reading Between the Lines II: A NEBC Shale Gas Quantitative Interpretation Case Study Incorporating

Laurie Weston Bellman, Jennifer Leslie-Panek, Pamela Reid and Eric von Lunen

The objective of this case study (Weston Bellman et al., 2015a) was to enhance and improve the prediction of facies and geomechanical properties of a shale reservoir interval. The conditioning, analysis and blending of the converted-wave (PS) data into the more conventional quantitative interpretation (QI) will be described to illustrate…

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January 2016

Cost-Effective Seismic Exclusion Zone Mitigation Using Optimal Station Prediction (OSP) Method

Andrea Crook

For large seismic exclusion zones affecting numerous source and/or receiver stations, should all the stations within the exclusion be skidded or offset around the edges of the exclusion, or should select stations that provide the most geophysical and economic value be used instead? How do we quantify station value? Is…

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December 2015

Working Visually with the Wavefield

Dr. Steven Lynch

Seismic begins life as an analog acoustic wavefield. We record it digitally and we process it digitally but it is, in its natural state, continuous in both time and space. Despite the venerable familiarity of conventional seismic displays, seismic does not naturally segregate into individual (wiggle) traces and it does…

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December 2015

Intro to December Focus: Land Seismic in Complex Basins

Rob Kendall

Welcome to this special issue of the RECORDER, with a focus on land seismic in complex basins which presents three papers on land acquisition, new recording equipment, acquisition planning, and resulting improvements in imaging and interpretation.

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December 2015

Cableless Seismic Acquisition

Rob Kendall

Cableless, wireless or cable-free (we will use the term cableless in this discussion) seismic recording systems do not transfer data back to a central recording system and they do not transfer power to multiple stations through cables. The majority of them are autonomous with the data being recorded on flash…

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December 2015

Imaging the Overturned Limb of a Footwall Syncline and its Impact on Exploration in Fold and Thrust Belts

Andrew C. Newson

The hydrocarbon exploration of the Western Canada Fold and Thrust Belt (WCFTB) is over 100 years old. For the last 70 years it has been greatly aided by seismic imaging techniques which have provided an understanding of the deep structures. Even so, this process is still full of surprises as…

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December 2015

Land Seismic Acquisition Testing Strategies and Results – Southern Chad, Africa 2013-2015

Andrea Crook, Paul Stephenson and Chaminda Sandanayake

Seismic acquisition testing provided tremendous benefit by improving subsurface imaging, increasing operational efficiency and reducing costs. Test results were used to improve operations in real time as data was being acquired, with the cooperation of seismic contractor BGP International (Chad). This paper will provide an overview of the seismic acquisition…

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December 2015

CSEG 2016/2017 Executive Election

Review of Candidiates for 2016-2017 CSEG Executive Election.

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November 2015

Intro to November Focus: Programming in Geoscience

Matteo Niccoli

There have been two instances so far during my career as a geoscientist in which programming has been the key ingredient to solving a problem. The first was in 2003 during my graduate research work at the University of Calgary. I was tasked with the analysis of multicomponent data recorded…

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November 2015

“Small software” to the Rescue

Steve Lynch

Over the years I have heard Software Development described any number of ways. The one that fits best is to me the statement that it is “a celebration of the brute force machismo of mutant hero developers”. I don’t know about the hero part but I am certainly one of…

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November 2015

Open Collaboration: Hackathons and Tomorrow’s Subsurface Software

Matt Hall

There’s a quiet revolution happening in subsurface science and engineering software. The last one happened about 12 years ago when powerful Linux and Windows PCs dropped under $20k and displaced Sun workstations, lowering the bar to fast, attractive 3D visualization. But, looking back, it happened in slow motion and at…

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November 2015

Feasibility in Setting up a Rayleigh Wave Explorer in Matlab

Enrico Caffagni

The word ‘Program’ (Wiktionary, 2006) derived from Ancient Greek πρόγραμμα (prógramma, “a written public notice, an edict”), from the verb προγράφω (prográphō, πρό (pró, “before”) + γράφω (gráphō, “I write”)). ‘If I write before’, I should have already planned and thought what to write. Programming is conceptually related to an…

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November 2015

Programming a Seismic Program

Evan Bianco and Matt Hall

Programming is becoming an increasingly useful skill for the modern geoscientist. I don’t mean to suggest that all geoscientists should become software developers and start making full-blown desktop software applications. But programming can and will super-charge your work, making you more productive and more thorough.

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November 2015

Learning by Doing

Matteo Niccoli

If you want to install Python, which you would need to run many of the resources in this section, I recommend using the Anaconda free Python distribution, which can be used for both noncommercial and commercial purposes, and redistributed: http://continuum.io/downloads, and includes all the main scientific computing libraries you will…

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October 2015

Geophysics in a Time of Cheap Oil

Leon Thomsen

The world is currently producing about a million barrels of oil more than it uses, every day. So, the price of oil has decreased, following a well-known “law of economics” This has put enormous financial pressure on all producers, especially the high-cost producers in the new shale resource plays. So,…

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October 2015

Introduction to October Focus: Conjugate Margins

Deric Cameron and Ian Atkinson

This October 2015 issue of the RECORDER focuses on the Atlantic conjugate margins. Most of the basins of the margins of Eastern Canada are still under-explored despite ongoing production in some basins since the 1990’s. Exploration activity in Eastern Canada has recently been invigorated by Statoil and Husky’s success in…

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October 2015

Evidence for Hyper-extended Continental Crust in the East Orphan Basin from Seismic Reflection Data

J. Kim Welford, Deric Cameron, James Carter and Richard Wright

The Eastern Newfoundland offshore region has experienced a resurgence in exploration activity over recent years, spurred on by several significant petroleum discoveries in the Flemish Pass Basin, northeast and along geological trend from the world-class deposits in the Jeanne d’Arc Basin. In 2012 and 2013, PGS, TGS, and Nalcor Energy…