Articles

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April 2016

Introduction To April Focus: Engineering Geophysics

Mostafa Naghizadeh

In this issue of the RECORDER, our focus topic is Engineering Geophysics. The methods of geophysical prospecting can be utilized in a variety of engineering applications, providing valuable information to improve the safety and reduce the costs of projects. These applications cover a wide range of environmental, mining, civil, geotechnical,…

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April 2016

Geophysical Applications to Construction Engineering Projects

Alastair McClymont, Paul Bauman, Eric Johnson, and Laurie Pankratow

“Drill, baby, drill!” It’s an often quoted line, made famous by former US Vice-Presidential candidate, Sarah Palin. For those of us who work in the field of engineering geophysics, the mantra should be “drill sparingly, baby, drill sparingly”. While there is no substitute for direct sampling of the ground, the…

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April 2016

Terminology for fluid-injection induced seismicity in oil and gas operations

David W. Eaton, Mirko van der Baan and Allan Ingelson

A glossary of terms, applicable to fluid-injection induced seismicity in oil and gas operations, is compiled from various sources. Creation, adoption and widespread use of standard definitions for induced seismicity and related terms will promote consistency and uniformity and will help to avoid confusion that may arise if different definitions…

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April 2016

A Cheat Sheet on Induced Seismicity

Neda Boroumand and Samira Maghsoudi

We begin by defining a few key terms: “induced seismicity” refers to a seismic event that is caused by pore pressure and stress change associated with human activity, “potentially induced seismicity” describes an induced seismic event that is coincidental with human activity, “microseismicity” are small scale induced seismic events related…

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April 2016

Value of Integrated Geophysics – Microseismic-Derived Ultimate Expected Fracture Half-Length in SRV in a Multi-Staged Pad in the Horn River Basin

Claudio Virues, Jessica Budge, Eric Von Lunen

Over the past decade, microseismic (MS) monitoring has become the approach often used to gain an in-situ understanding of the rock’s response during stimulation. Recently, the utilization of downhole monitoring of treatments has provided for an opportunity to investigate the way these fractures develop by examining microseismic events recorded during…

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March 2016

Forensic Data Processing – Revealing Your Data’s Hidden Stories

Joe Dellinger

We are asking for more and more from our seismic data: more efficient acquisition, broader bandwidth (both high and low), sources that are more environmentally friendly (i.e. quieter), accurate amplitudes for AVO and 4D. Acquisition and processing are undergoing a revolution to support these needs. New developments such as simultaneous…

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March 2016

Introduction To March Focus: GeoConvention Preview

Rob Holt

The late, great Tom Podivinsky said "for generating prospects, fundamentally we look at whatever everyone else is doing and then copy them" in his RECORDER interview (January, 2014). Let us also not forget that imitation is the sincerest form of flattery. I always look forward to attending the GeoConvention. It…

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March 2016

Finding Sweet-Spots and Quantifying Recovery Potential in Unconventional Plays:
Using the Montney Play as an example of how a Common Risk Segment Mapping approach can be applied to quantifying Estimated Ultimate Recovery in pervasive hydrocarbon systems

Ian J. Cockerill and Aaron W. Hughes

hen liquids-rich parts of the Montney Play in northeast British Columbia (NEBC) emerged and began to be developed in late 2013 and 2014, ‘The Montney’ was thrust on to the scene as one of the most commercially attractive and compelling unconventional prospects in North America. A rush to find where…

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March 2016

Microseismic Geomechanics Interpretation of a Montney Hydraulic Fracture

Drew Chorney, Mike Smith and Shawn Maxwell

In this paper, we describe the use of a geomechanical model to interpret microseismicity recorded during a Montney hydraulic fracture treatment. The microseismic geomechanical model is calibrated to the recorded microseismicity and used to understand the complete fracture network, including the proppant distribution. The calibrated model is then used to…

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March 2016

Supercomputing Needs of our Industry

Satinder Chopra and Kurt J. Marfurt

The search for oil and gas has now moved into complex frontier areas such as the foothills in the onshore and into deeper waters and subsalt traps in the offshore, where geological risks are higher. The need to maximize the economic production of hydrocarbons in our current low price environment…

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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…