- Home
- A-Z Publications
- First Break
- Previous Issues
- Volume 30, Issue 6, 2012
First Break - Volume 30, Issue 6, 2012
Volume 30, Issue 6, 2012
-
-
Achieving responsible technology in a marine seismic company
More LessJon Erik Reinhardsen, president and CEO, PGS, provides an insight into the drivers of Petroleum Geo-Services (PGS) in its 20 years of innovative leadership in the marine seismic business.
-
-
-
Technology parallelism: the way forward for responsibly securing our natural resources?
More LessBjarte Fagerås argues that the oil and gas industry must help itself by developing effective monitoring of its operations in parallel with new technology to explore and produce in increasingly challenging geological and environmental settings around the world.
-
-
-
Role of geophysics in a responsible approach to meeting our future energy requirements
By Robin WalkerRobin Walker outlines some easy wins and the bigger challenges for the geophysical community to ensure it optimizes future exploration and production of much needed oil and gas resources while addressing legitimate – and perceived – environmental and safety concerns.
-
-
-
Seismic of tomorrow: configurable land systems
By Bob HeathRegular First Break contributor Bob Heath takes a hard look at what is required for land seismic acquisition systems to meet the requirements of securing natural resources responsibly
-
-
-
Why the role of advanced geoscience has never been more vital
By Eldad WeissEldad Weiss, CEO and Duane Dopkin, EVP-Technology, Paradigm explain why geoscience provides solutions to optimal drilling and production strategies, at the same time satisfying today’s environmental concerns.
-
-
-
The art of managing risk in complex field operations and volatile energy markets
More LessThe energy sector faces a steeply rising risk profile, due to a combination of more complex field development projects, volatile commodity prices and unstable credit markets. Ruud Weijermars outlines a framework for corporate risk management, illustrates risk management failures, and gives recommendations for improving risk mitigation practices.
-
-
-
How geoscience decision support software tools have evolved and what it means for E&P companies
By Rod LaverFrom a geoscience perspective Rod Laver, Trygve Randen and Stephen Warner trace the development of computer-aided E&P from the pre-workstation era to the present day and look to an ever more multi-disciplinary integrated approach to decision software support tools in the future.
-
-
-
Risk and uncertainty from frontier to production – a review
Authors Paul Binns and Patrick CorbettWe review the methods used to estimate subsurface risk and volumetric uncertainty over the exploration and production lifecycle. Whilst probabilistic techniques are essential to decision-making, we show they have limitations which must be understood. In frontier situations they are hard to justify and non-technical factors weigh heavily in decisions. As more information becomes available, probabilistic estimates are more justifiable, but results can be very sensitive to small changes in input parameters and to other factors. The nature of the transition to development varies. In simple accumulations, once an economic volume has been discovered, exploration risk is replaced by development execution risk. In the case of extensive reservoir complexes, the risk of not finding an economic volume may persist. In both situations, uncertainties relating to reservoir detail, fluid properties, and natural drive mechanisms become critical. Production data add to the complexity, as do interactions with external factors such as surface facilities. Resolving uncertainty at this stage, therefore, requires techniques to integrate and interpret large amounts of data. Given the subjective nature of much of the input into evaluations, likely human biases must be recognized.
-
-
-
CSEM efficiency – evaluation of recent drilling results
Authors Jonny Hesthammer, Aristofanis Stefatos and Susanne SperrevikIn 2011 and early 2012, seven exploration wells were drilled in locations where CSEM data existed. Three of these were discoveries, while the remaining four were dry. Four wells were drilled in locations with significant CSEM responses, and these four wells included all three discoveries. Three wells were drilled in locations without a significant CSEM response, and all those three wells were dry. Thus, the results from six of the seven wells are in accordance with previously published statistics in that a well targeting a prospect associated with a significant CSEM anomaly is likely to make a discovery whereas a well targeting a prospect without a significant CSEM anomaly is likely to be dry. In this respect, the rationale behind the drill decision for the four dry wells needs to be investigated through detailed post-drill evaluations. In particular, two of the wells did not show a clear fit between the main CSEM anomaly and the prospect outline, and it may be argued that these discrepancies should have been examined more closely before drilling.
-
-
-
Frequency-dependent AVO attribute: theory and example
Authors Xiaoyang Wu, Mark Chapman and Xiang-Yang LiFluid-saturated rocks generally have seismic velocities that depend upon frequency. Exploring this property may help us discriminate different fluids from seismic data. In this paper, we introduce a scheme to calculate a frequency-dependent AVO attribute in order to estimate seismic dispersion from pre-stack data, and apply it to North Sea data. The scheme essentially combines the two-term approximation of Smith and Gidlow (1987) with the method of spectral decomposition based on the Wigner-Ville distribution, which is used to achieve high resolution. The result suggests the potential of this method for detection of seismic dispersion due to fluid saturation.
-
Volumes & issues
-
Volume 42 (2024)
-
Volume 41 (2023)
-
Volume 40 (2022)
-
Volume 39 (2021)
-
Volume 38 (2020)
-
Volume 37 (2019)
-
Volume 36 (2018)
-
Volume 35 (2017)
-
Volume 34 (2016)
-
Volume 33 (2015)
-
Volume 32 (2014)
-
Volume 31 (2013)
-
Volume 30 (2012)
-
Volume 29 (2011)
-
Volume 28 (2010)
-
Volume 27 (2009)
-
Volume 26 (2008)
-
Volume 25 (2007)
-
Volume 24 (2006)
-
Volume 23 (2005)
-
Volume 22 (2004)
-
Volume 21 (2003)
-
Volume 20 (2002)
-
Volume 19 (2001)
-
Volume 18 (2000)
-
Volume 17 (1999)
-
Volume 16 (1998)
-
Volume 15 (1997)
-
Volume 14 (1996)
-
Volume 13 (1995)
-
Volume 12 (1994)
-
Volume 11 (1993)
-
Volume 10 (1992)
-
Volume 9 (1991)
-
Volume 8 (1990)
-
Volume 7 (1989)
-
Volume 6 (1988)
-
Volume 5 (1987)
-
Volume 4 (1986)
-
Volume 3 (1985)
-
Volume 2 (1984)
-
Volume 1 (1983)