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Direct hydrocarbon indicators

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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215628
... ABSTRACT Direct hydrocarbon indicators (DHIs) are a seismic anomaly that may indicate a possible reservoir. However, the task of finding a DHI anomaly in the seismic data is arduous considering that in most of the cases, this indicator is hard to sight in a large seismic data. Deep neural...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13858356
...Low-frequency seismic analysis and direct hydrocarbon indicators Bilal Ahmed Bhatti* and R. James Brown, University of Stavanger, Norway Summary Using seismic and well data from the Johan Sverdrup field, Central North Sea and the Western Graben, Southern North Sea, a low-frequency analysis has been...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0588
... information is needed, it can be obtained at marginal cost by doubling the number of recording channels. Evaluation of Direct Hydrocarbon Indicators through Comparison of Compressional and Shear-Wave Data: A Case Study of the Myrnam Gas Field, Al berta 93.4 Ross Alan Ensley. Exxon Prodrction Resem~h Co...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 22–25, 2016
Paper Number: OTC-26679-MS
.... In a properly processed low frequency section/volume the amplitude brightening may be used as direct hydrocarbon indicator. The frequency dependent reflectivity which is supposed to be higher at lower frequency range for a fluid saturated interface should produce higher amplitude on a low frequency section...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2160
... that in turn result in push down of reflectors and cause the delay in time series. frequency shift thickness seg houston 2009 local frequency seismic data peak frequency anomaly frequency anomaly fluid property direct hydrocarbon indicator frequency response low frequency anomaly attenuation...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0553
... INTRODUCTION Summary Several years ago ExxonMobil developed a best practice process to evaluate and understand risk in Direct Hydrocarbon Indicators (DHI) dependent plays. Within this best practice a robust processing stream, a rigorous analysis process, and a calibrated DHI-rating system...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-0243
... ABSTRACT Introduction of small or large quantities of hydrocarbons into a porous low impedance reservoir has been known for some time to produce an amplitude increase with moderate offset. This direct hydrocarbon indicator signature has been successfully exploited for some time. The drawback...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-0659
...Direct Hydrocarbon Migration Indicator, A Venting Feature in Equatorial Guinea Joseph A. Canales, CMS Oil and Gas Company Summary Hydrocarbon venting and seepage features are associated with producing fields in Equatorial Guinea, including Zafiro and Alba Fields. The most recent discovery...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 10–12, 2014
Paper Number: IPTC-17863-MS
... Abstract Low frequency shadows have long been accepted as direct hydrocarbon indicators, but few convincing examples have been published. A deliberate search for low frequency shadows on seismic data from multiple fields offshore Malaysia finds no clear candidates. Prospect-scale frequency...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0375
... Summary Low frequency shadows have long been accepted as direct hydrocarbon indicators, but few convincing examples have ever been published. A deliberate search for low frequency shadows on seismic data from multiple fields offshore Malaysia finds no clear candidates. Prospect-scale...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-0483
... exploration experience, AVO anomaly of Class III was used as a direct hydrocarbon indicator for detecting shallow gas of Plio-Peistocene foreland basin in the southwestern Taiwan area. Based on this experience, the YK-1 well targeting at the top of the Kanhsiaoliao formation of Plio/Pleistocene was drilled...
Proceedings Papers

Paper presented at the Offshore South East Asia Show, February 9–12, 1982
Paper Number: SPE-10465-MS
... the presence of hydrocarbons on seismic data depends on the interpreters ability to recognize the efforts they have on seismic reflections. These characteristic changes in reflection pattern are called direct hydrocarbon indicators or "DHI's". Under idealized conditions, DHI analysis can yield valuable...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1982
Paper Number: OTC-4257-MS
... are called direct hydrocarbon indicators or "DRI's". Under idealized condictions, DRI analysis can yield valuable exploration information concerning the presence, thickness, lateral limits and type of hydrocarbons present in a structure. Information concerning the presence, extent and seriousness of drilling...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19103-MS
... it's difficult to obtain seismic velocity precisely. There were great risk and uncertainty in description of the trap and distribution of gas-bearing sandstone, reservoir prediction of sweet spot, direct hydrocarbon indication, and reserves assessment. In consideration of the drilling platform...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15248-MS
... analyses indicate that the methodology has the potential of being a direct hydrocarbon indicator (DHI) as well. Introduction In the last few years prospecting for hydrocarbon in deepwater has increased enormously. With these new plays, new problems have emerged. Several articles have been written...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-1352
...). This amplification peak is especially pronounced in the spectral ratio between the horizontal and the vertical (V) component of ground motion (H/V-ratio). Low-frequency (<10 Hz) spectral anomalies in surface microtremor signals have recently also been used as direct hydrocarbon indicators. For example, Dangel et...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2009
Paper Number: OTC-19983-MS
... Abstract Seismic amplitude anomalies that are DHI's, Direct Hydrocarbon Indicators, have played a major role in oil and gas exploration since the early 70's. These features are commonly found in offshore Tertiary age sandstones, but are also present in older rock onshore areas. The technology...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-0122
... Introduction Smith and Gidlow (1987) introduced the fluid factor in amplitude versus offset (AVO) analysis. It was designed to be a direct hydrocarbon indicator. Goodway et al. (1997) suggested that Lamé’s elastic parameters ? and µ, and their products with density, could be useful tools...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1985
Paper Number: OTC-4932-MS
..., which were not observed on the conventional relative amplitude data. INTRODUCTION Churline and Sergeyev (1963} and Ballakh et al (1970) used direct hydrocarbon indicators long before they became widely recognized in the Western world. But it was a great idea whose time had arrived. Since the early...
Proceedings Papers

Paper presented at the Nigeria Annual International Conference and Exhibition, August 6–8, 2012
Paper Number: SPE-160902-MS
... and shapes, possible in applicability of wood's equation. This study investigates the uncertainty in gassmann's equation and the implication in direct hydrocarbon indicator (DHI) analysis and time lapse monitoring. Gassmann's equations are only applicable to clean, highly permeable reservoir rocks. When gas...

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