Bulletin Article

3772
 
Understanding the distribution and geometry of reservoir geobodies is crucial for net-to-gross estimates and to model subsurface flow. This article focuses on the process of dolomitization and resulting geometry of diagenetic geobodies in an outcrop of Jurassic host rocks from northern Oman. Field and petrographic data show that a first phase of stratabound dolomite is crosscut by a second phase of fault-related dolomite. The stratabound dolomite geobodies are laterally continuous for at least several hundreds of meters (sim1000 ft) and probably regionally and are one-half meter (1.6 ft) thick. Based on petrography and geochemistry, a process of seepage reflux of mesosaline or hypersaline fluids during the early stages of burial diagenesis is proposed for the formation of the stratabound dolomite. In contrast, the fault-related dolomite geobodies are trending along a fault that can be followed for at least 100 m (328 ft) and vary in width from a few tens of centimeters to as much as 10 m (sim1–33 ft). Petrography, geochemistry, and high homogenization temperature of fluid inclusions all point to the formation of the dolomite along a normal fault under deep burial conditions during the Middle to Late Cretaceous. The high 87Sr/86Sr ratio in the dolomite and the high salinity measured in fluid inclusions indicate that the dolomitizing fluids are deep basinal brines that interacted with crystalline basement. The dolomitization styles have an impact on the dimension, texture, and geochemistry of the different dolomite geobodies, and a modified classification scheme (compared to the one from Jung and Aigner, 2012) is proposed to incorporate diagenetic geobodies in future reservoir modeling.

Explorer Article

11277
 
There’s still time to register for a historic conference that promises to bring together the best of the worlds of science and industry. This year’s AAPG International Conference and Exhibition (ICE) will be held Sept. 14-17 in Istanbul, Turkey.
10763
 
ICE 2014 marks the first time an AAPG international conference will be held in Istanbul – but that’s not the only new dynamic being offered. This meeting also marks the first time the APPEX Regional meeting will be held in conjunction with an ICE.
3166
 
Explorer Article

Discoveries were comparatively sparse, but they persisted steadily throughout the year. Here are some of the more significant discoveries of the past year.

1837
 
Explorer Article

Rocky road to success: AAPG member Simon Donato found adventure and much more – when he accepted the personal challenge of finding archaeological sites in the rugged and dangerous mountains overlooking the Strait of Hormuz.

2088
 

Distinguished Lecturer Steve Dorobek’s Asia Pacific Region tour, originally slated for March, has been delayed until May – but the AAPG DL program will remain active in March with four speakers ready to tour.

2898
 
Explorer Article

Heavy oil in the Middle East – an overlooked potential?

Explorer Emphasis

11800
 

Improved imaging technology has helped explorationists in the Sultanate of Oman reawaken a sleeping giant.

1861
 
Explorer Emphasis Article

An added dimension: 3-D seismic data is an essential ingredient in operators’ efforts to understand the risks and nuances of shale plays.

11358
 
Explorer Emphasis Article
Tough terrain, challenging locales, political upheavals: Welcome to the world of international seismic work, where the hardest part of the job might be just getting to the job.

Workshop

Doha Qatar 16 February, 2015 18 February, 2015 10666
 
Doha, Qatar
16-18 February 2015

Check the website for details as they develop.

Dubai United Arab Emirates 17 May, 2015 19 May, 2015 10668
 
Dubai, United Arab Emirates
17-19 May 2015

Check the website for details as they develop.

Dead Sea Jordan 08 June, 2015 10 June, 2015 10669
 
Dead Sea, Jordan
8-10 June 2015

Check the website for details as they develop.

Abu Dhabi United Arab Emirates 02 March, 2015 04 March, 2015 10667
 
Abu Dhabi, United Arab Emirates
2-4 March 2015

Check the website for details as they develop.

Muscat Oman 20 October, 2014 22 October, 2014 8553
 
Muscat, Oman
20-22 October 2014

This three-day workshop will be dedicated to sharing knowledge, ideas, and workflows pertaining to exploration for stratigraphically trapped hydrocarbon accumulations in the Middle East. The workshop will emphasize case studies involving both carbonates and clastics — in order to help focus explorationists in their search for these types of traps. 

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