As geoscientists and engineers, and like most other professionals, we take pride in using our education and experience for the betterment of society. In developed countries, the value of such work on water supply projects may not be so obvious, where we take for granted that our communities will always have access to a ready supply of safe drinking water, and that we have built enough resilience to avoid running out of water should catastrophe strike.
In the Athabasca oil sands, lithology and fluid composition are typically better correlated with density than with other elastic properties, such as P- and S-wave velocity. Therefore, improving the accuracy of density estimates in oil-sands reservoirs has become one of the most important goals in quantitative interpretation.
The Schlumberger brothers were the first to use the direct current (DC) resistivity method for exploration, in oil well boreholes in Russia during the 1920’s. A unique phenomenon, now referred to as induced polarization (IP) chargeability, was noticed at the time, but not understood until simultaneous developments in both Russia and North America in the 1950’s. This lead to the development of the time domain and frequency domain IP methods.
Muon geotomography is a novel density measurement technique based on the absorption of cosmic ray muons in the ground. Naturally occurring cosmic ray muons emanating from the upper atmosphere lose energy as they penetrate the earth. These muons are absorbed at a rate that is proportional to the density of the material they pass through.
Over the past 10 years, land seismic acquisition has changed significantly. Nodal/cable-less systems have broadly replaced cabled systems, vibroseis sources have replaced explosive sources even in areas with difficult terrain, and high-density seismic programs are becoming commonplace.
On the heels of a very successful GeoConvention 2018, we would like to thank all of the individuals who attended and the companies who supported the convention by exhibiting, sponsoring and supporting their employees’ attendance. GeoConvention 2018 saw increased attendance, a larger number of exhibitors and greater sponsorship than in 2017.
The CSEG Foundation Mentorship program, just completed its 9th year, and it was a year of challenge, change and progress. 2017/2018 saw membership in the program drop steeply from over 50 pairings in previous years to 33 pairings this year. Although it was smaller, the Mentorship program continued to strengthen its national and international reach with ten ‘distance’ pairings.
We remember pioneer Roy Lindseth and revisit his 2007 interview with the CSEG RECORDER.
.The fast pace of drilling and completion of unconventional reservoirs in North America is challenging engineers, geoscientists and petrophysicists who have to make prompt and reasonable plans for drilling completion strategies. One of the main issues is understanding the physical rock properties, such as clay and organic content, and mechanical properties or stress behaviour, in these often highly anisotropic reservoirs.
The Duvernay Formation, located in central Alberta, Canada, is mainly an organic-rich shale that is a source rock for conventional oil and gas reservoirs, and more recently also very attractive for exploitation as unconventional shale plays. The development of these types of plays requires the implementation of unconventional techniques, such as horizontal drilling and hydraulic fracturing, to increase the permeability of the reservoir.
Stacked tight sands and unconventional plays tend to be found together in what has been termed as deep basin environments also known as continuous basin-centered gas accumulations (BCGAs) which tend to be found predominately in foreland and intracratonic basins but are not restricted to these basins.
The CSEG RECORDER reflects all the activities that we do as a professional organization and our contributions to society and to our respective industries. We would like to encourage authors from universities and the geoscience industries including but not limited to hydrology, environmental, mining, etc. around the world to submit their articles that are about the implementation of Geoscience or Engineering that will help our community to have innovative and creative thoughts.