DGeophS Luncheon - Low Saturation Gas Reservoir Discrimination

Thursday 28-Oct-10 11:30 AM to 1:00 PM CDT

We were unable to register you for this event as the event deadline has passed.

Ellison Miles Geotechnology Institute Brookhaven College (click for link)

3939 Valley View Lane
Farmers Branch Texas 75244
Google Maps | Hotels Near | Yahoo! Maps | Weather Forecast
Phone: (972) 860-4630

Speaker Alfred Liaw (click for expanded biography)

Position: Distinguished Geophysical Advisor
Company: Anadarko Petroleum Corporation

Event Description

Low Saturation Gas Reservoirs Discrimination – An Integrated Approach

Low saturation gas reservoirs are commonly found in the deep to ultra-deep water environment of the Gulf of Mexico. Most low saturation gas reservoirs result from a breached seal or insufficient charge in a petroleum system. The breached seals could take place either from past or on-going leakages. A breach in a top seal and/or a fault seal can easily result in a low saturation gas reservoir. It has been a major technical challenge to identify low saturation gas reservoirs before penetrating them. Since deepwater exploration drilling has been extremely expensive, assessing risk for those amplitude targets can have significant economic impact.

AVO analysis, amplitude vs. background (A/B), amplitude conformable with depth structure, and low frequency shadow are the technologies commonly applied to validate gas reservoirs in Tertiary Basins. We analyzed seismic amplitudes, AVO responses, instantaneous frequencies, and effective stress over 10 discoveries and 12 dry holes in an area near the intersection of Mississippi Canyon, Atwater Valley, Desoto Canyon, and Lloyd Ridge of Eastern Gulf of Mexico. The study area falls in the vicinity of the Independent Hub producing fields. The water depths range from 7,000 to 9,000 ft. Based on the analysis results, the team formulates an integrated workflow, by applying differential weights to the index of A/B, AVO, low frequency shadows, and effective stress, to mitigate the uncertainty of risk for all Miocene amplitude plays. The workflow was applied to rank 13 prospects. The integrated methodology has been proven as an effective way to reduce the uncertainty on predicting the occurrence of low saturation gas reservoirs.

Attachments


Event Contact	Event Coordinator
Alfred Berroteran	Keith Brownlee
(972) 818-2550	(214) 704-4744
(972) 818-2553 FAX

DGeophS Luncheon - Low Saturation Gas Reservoir Discrimination

Thursday 28-Oct-10 11:30 AM to 1:00 PM CDT

Speaker Alfred Liaw (click for expanded biography)

Position: Distinguished Geophysical Advisor
Company: Anadarko Petroleum Corporation

Biography

Alfred Liaw has more than 32 years of E&P experience. During his 32 years career with ARCO, Oryx, Kerr-McGee, and Anadarko, he has participated in a wide range of E&P projects in West Africa, East Africa, Romania, China, SE Asia, Gulf of Mexico, North Sea, Brazil, and Alaska. Currently, he is a Distinguished Geophysical Advisor and Team Lead of Geophysical Technology at Anadarko Petroleum Corporation in the Woodlands, Texas. His technical expertise encompasses seismic imaging, pore pressure analysis, seal integrity evaluation, and AVO/DHI validation.

Alfred has been actively participating in SEG since 1992. He has been elected to the SEG Vice President starting in October 2010. He have served SEG as the chairman of the SEG Global Affairs Committee. As a member of the Annual Meeting Steering Committee, he served as the Chairman of the International Showcase, the Global Theater Coordinator for the 2008 SEG Annual Convention. He is one of the 2008 SEG Presidential Award recipients for his outstanding services to SEG.

Liaw has been an active member of CAPA since 1998. In the past 10 years, he has served as the Vice-President in 2002, President in 2003, member of the Board of Directors from 2002 to 2007, and the Chairman of the Board of Directors in 2006.

Alfred holds a BS degree in Geology from National Taiwan University, an MS degree in Geology from Southern Methodist University, and a Ph.D. in Engineering Geosciences from the University of California at Berkeley.