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- Volume 37, Issue 3, 2019
First Break - Volume 37, Issue 3, 2019
Volume 37, Issue 3, 2019
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AVO, near and far - the end of the trend?
More LessAbstractThis paper gives a brief overview of the history of the well-known and famous ‘background trend’ in AVO theory, which also goes by the names ‘lithology trend’, ‘fluid line’ and sometimes ‘noise trend’.
Whereas the discovery of the trend met with euphoria, stirring hopes that it would become much easier to detect hydrocarbons, this promise has hardly been fulfilled. One of the problems was (and is) that the trend is much steeper than what theory based on rock properties predicts. This paper explains why and how the trend can be so steep. It explains how a clear trend emerges regardless of lithology, hydrocarbons or even noise. Any contribution from lithology or pore fluid, if it exists, will be smaller and often completely drowned by what I call the ‘transformation trend’.
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The role of geophysics in Oxy’s Permian Basin unconventional resource play appraisal and development workflow
Authors Steve Adiletta, Rob Holt, Afsha Kaba, Laura Gimenez, Klaas Koster and Norbert van de CoeveringAbstractOccidental Petroleum Corporation’s (Oxy’s) US business is focused on the Permian Basin of West Texas and Southeast New Mexico. With nearly 2.5 million net acres, Oxy produces hydrocarbons from every producible formation in the Permian Basin. To efficiently unlock value from this extensive acreage and operating position, Oxy has developed an unconventional resource play appraisal and development workflow within which geophysics plays an integral role. This is notable given that just a couple of years ago geophysical data and analysis played a very minor role in our industry’s unconventional resource play business decision-making process in this basin.
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Lessons learnt from recent dry wells in northwest Africa
Authors Jonathan David Castell, James Scotchman and Thomas ButtAbstractIndustry interest in the Mauritania-Senegal-Guinea Bissau-Conakry (MSGBC) Basin has heightened in recent years with the SNE and FAN discoveries, offshore Senegal in 2014, as well as a successful drilling campaign in 2015–16. Recently, however, many high-profile dry wells suggest that the geological risks in these basins are not fully understood at present.
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Subsalt exploration in shallow waters of the Republic of Congo
AbstractSixty years ago, hydrocarbon production started in the Republic of Congo with the Pointe Indienne Field. Since then, more than 30 other fields are in development and/or production. The Republic of Congo has seen several successful hydrocarbon exploration and production campaigns, establishing the country as one of the major oil producers in West Africa.
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Integrated reservoir characterization using high definition frequency decomposition, multi-attribute analysis and forward modelling. Chandon discovery, Australia.
Authors A. Mantilla, P. Szafian, R. Bell and C. HanAbstractFrequency decomposition and forward modelling represent advanced seismic techniques that can be applied to assist hydrocarbon exploration. The Chandon (4TCF) and Yellowglen (net-pay column 137m) gas discoveries in the Exmouth Plateau, North Carnarvon Basin (NCB), Australia (Figure 1) offer an excellent opportunity to test and demonstrate the applicability of these techniques in the search for hydrocarbons, because of the high-quality seismic data available, the textbook-example of gas flat-spot response, the fluvial-dominated reservoir and the existing proven hydrocarbon accumulation (Geoscience Australia, 2014).
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Oil prospects in the Mozambique Channel: where incipient subduction meets passive margin
Authors Anongporn Intawong, Neil Hodgson, Karyna Rodriguez and Phillip HargreavesAbstractAfter several major gas discoveries made offshore Tanzania and northern Mozambique, the entire East Africa margin has been assumed to be a gas province. We present evidence for a new oil province along this margin based on an interpretation of Spectrum’s recently acquired modern Broadband 2D seismic data in the offshore Angoche/Mozambique Basin. The new seismic data lying south of the Rovuma Basin and across the Davie Ridge in the Mozambique Channel (Figure 1) are considered together with an integration with sea surface oil slicks identified on satellite imagery and other direct hydrocarbon indicators (DHIs).
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Volumes & issues
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Volume 42 (2024)
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Volume 41 (2023)
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Volume 40 (2022)
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Volume 39 (2021)
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Volume 38 (2020)
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Volume 37 (2019)
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Volume 36 (2018)
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Volume 35 (2017)
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Volume 34 (2016)
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Volume 33 (2015)
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Volume 32 (2014)
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Volume 31 (2013)
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Volume 30 (2012)
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Volume 29 (2011)
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Volume 28 (2010)
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Volume 27 (2009)
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Volume 26 (2008)
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Volume 25 (2007)
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Volume 24 (2006)
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Volume 23 (2005)
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Volume 22 (2004)
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Volume 21 (2003)
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Volume 20 (2002)
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Volume 19 (2001)
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Volume 18 (2000)
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Volume 17 (1999)
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Volume 16 (1998)
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Volume 15 (1997)
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Volume 14 (1996)
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Volume 13 (1995)
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Volume 12 (1994)
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Volume 11 (1993)
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Volume 10 (1992)
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Volume 9 (1991)
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Volume 8 (1990)
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Volume 7 (1989)
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Volume 6 (1988)
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Volume 5 (1987)
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Volume 4 (1986)
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Volume 3 (1985)
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Volume 2 (1984)
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Volume 1 (1983)