Articles

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March 2016

Reducing Uncertainty in Characterization of Vaca Muerta Fm Shale with Post-stack Seismic Data

Ritesh Kumar Sharma, Satinder Chopra, Luis Vernengo, Eduardo Trinchero and Claudio Sylwan

The Late Jurassic-Early Cretaceous Vaca Muerta (VM) Formation in the Neuquén Basin has served as an important source rock for many of the conventional oil and gas fields in Argentina. With the interest in developing and exploiting the shale resources in the country, many companies there have undertaken the characterization…

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March 2016

Preconditioning of Seismic Data Prior to Impedance Inversion

Satinder Chopra and Ritesh Kumar Sharma

The calibration of seismic data with the available well control is an important step that provides the link between seismic reflections, their stratigraphic interpretation and subsequent prediction of reservoir and fluid properties. The standard practice to do this has been to produce synthetic seismograms from well logs with a bandwidth…

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February 2016

The Oil Price and Seismic Exploration: A Roller Coaster Ride

Easton Wren

In any debate a historical perspective is useful since it tells us where we were and how we got here. It does not necessarily enable predicting the future. The ever changing oil price and the ups and downs of seismic exploration are ideal examples for looking into the past and…

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February 2016

Introduction To February Focus: Reservoir Geophysics

Marco Perez

Geophysics has a wide range of uses within the oil and gas industry. In the broadest sense, geophysical data is a representation of the earth’s interior. Geophysicists design experiments to ascertain properties such as structure, geomorphology and even mapping hydrocarbon reservoirs. Reservoir geophysics can mean a number of different things…

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February 2016

A Reservoir Characterization Strategy for the Flemish Pass Basin, Offshore Newfoundland and Labrador

Chris Blackwood and Gary Thorpe

In frontier deep water exploration settings such as the Flemish Pass offshore Newfoundland and Labrador, wells are uncommon and are often separated by tens of kilometres or more. Given the scarcity of well data, well-to-seismic calibrations must be extrapolated over large distances. Seismic interpretation and analysis drives the understanding of…

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February 2016

Predicting Mineralogy from Elastic Rock Properties

Rob Holt and Bill Westwood

In contrast to conventional reservoirs, where the measured elastic rock properties are sensitive to changes in facies, porosity and pore fluids, we find that changes in the elastic rock properties of low porosity unconventional plays are driven largely by changes in the relative fractions of the dominant minerals that form…

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February 2016

An Overview of Microseismic Acquisition Project Management

Jubran Akram and Atila da Silva Paes

In the past decade, the boom of stimulation and production from the unconventional reservoirs have made microseismic monitoring a commonly used technology in the petroleum industry. However, the recent business challenges faced by the petroleum industry have amplified the need for cost optimization while achieving the maximum benefits from a…

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February 2016

Inversion in Depth?

Satinder Chopra

An interesting idea that was highlighted at the recently concluded 2015 SEG Convention at New Orleans was about carrying out seismic impedance inversion in the depth domain. ‘Inversion’ refers to the transformation of seismic amplitude data into acoustic impedance data. Seismic data represent an interface property wherein reflection events are…

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January 2016

Value Thinking from the Classical to the Hyper-Modern

Lee Hunt

The modern geoscientist has access to an unrivaled depth of geoscientific knowledge. There seems to be a technique for everything, and an available level of detail to fit any issue. More articles, more ideas, more complex formulae, more everything. Famed geoscientists argue certain technical minutiae the way old theists would…

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January 2016

Introduction To January Focus: Geoscience Innovations – Best of GeoConvention 2015

Rob McGrory

Our joint annual convention has been the principal technical conference for Canadian earth scientists principally working in the petroleum industry. The purpose is to communicate, and stay informed about the latest developments in our profession, and network with fellow professionals. The three societies involved in GeoConvention are the Canadian Well…

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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 Multi-Component Data

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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