Badley Ashton’s world class expertise has extensive reach. Our experience includes working with major oil & gas companies in Africa, North America, South America, South East Asia, Australia, Europe, Northern Eurasia, Malaysia, and the Middle East.

The application of Borehole Imaging in appraising a Triassic (TAGI) fluvial reservoir,

The main objectives of this study were to better understand the distribution, orientation and type of channel bodies within successive layers of the Triassic Argilo-Grèseux inférieur (TAGI) reservoir in the Ourhoud field through the integration of core and Ultrasonic Borehole Image (UBI) datasets from 37 wells. To this end, the UBI data were assembled into a sedimentologically driven depositional hierarchy in which the sub-bed/bed-scale image facies and dip classifications were progressively 'upscaled' through bedforms (dm-scale) and macroforms (dm-m-scale) into genetic elements (m-scale). Macroforms determine the sinuosity and internal geometries of the fluvial system, whilst genetic elements help constrain the depositional and permeability architecture within the TAGI reservoir. The sedimentological data are used to test the validity of the two depositional models to help develop a robust, fully integrated reservoir model that will soon assist with development well placement.

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High-frequency cyclicity in the Late Jurassic Arab Formation in a giant gas field, United Arab Emirates?

Detailed core description of multiple wells within a giant gas field in the United Arab Emirates (UAE) has enhanced the understanding of the depositional make-up and possible controls on depositional style for the Arab Formation.

Within the low-energy units of the lowest Arab Formation reservoir, mudstones are interbedded with bioclast-rich accumulations of variable thickness and an uncertain origin. The vertical spacing of these units may be a function of random/non-random cyclicity (?Milankovitch) and reflect variation in depositional slope angle and hence slump/debrite deposits or deeper water faunal communities.

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New Insight on the Depositional Environment and Facies Atlas of Aptian in a Super Giant Carbonate Field in the Middle East

In order to establish facies, facies stacking patterns and the 3D architecture of a super giant field contained in the Aptian in onshore Abu Dhabi , detailed sedimentological and petrographic core descriptions have been carried out using about 13000 ft of core from a total of 49 cored wells. In total 27 facies have been established using fabric and bio content. They have been placed into conceptual depositional models following an evolving platform to basin topography during transgressive, early highstand and late highstand phases of carbonate platform development during the Aptian. This paper presents a comprehensive facies atlas that contains for each facies a detailed description of fabric and bio content, core and thin-section pictures, petrophysical summaries and an interpretation of depositional environment.

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