FIELD TRIPS

Each field trip below is free of charge and can accommodate up to 20 participants on a first-come, first-served basis. To find out more, or to register your interest, please contact Julie Atkinson at jatkinson@spe.org.

FIELD TRIP 1

12 November, Tectono-Stratigraphic Sequences and Semail Ophiolite Emplacement Relationships, Jebel Fayah Range, Sharjah, UAE

ebel Fayah is a ~N-S oriented frontal foreland fold to the Oman mountain belt, located in central UAE. It is cored with W-ward thrusted Semail Ophiolite, whose topography is overlain by conglomeratic Qahlah Fm. and Maastrichtian aged Simsima Fm., above the late cretaceous Wasia-Aruma break. Later tertiary folding modified the Jebel Fayah structure, as evidenced by the unconformable intra-eocene limestones.

This excursion will investigate the upper cretaceous unconformity, through omission and stratigraphic growth sequences, along the front of the Oman mountains in the Al Fayah area foothills. Assessment of stratigraphic contacts in several places, to understand consistency, will elucidate large-scale tectonic generative processes (late cretaceous and eocene tectonism) and its significance to hydrocarbon trap generation outboard in the UAE petroleum province.

 

FIELD TRIP 2

12 November, Fractured Reservoirs Characterisation, Jabal Hafit, Al Ain, UAE

The main objective of this field trip is to offer participants the opportunity to study the structural style and fracturing of carbonate rocks analogous to reservoir units of the globally important UAE oil province. The clear exposure of these carbonate rocks in this tectonically complicated area provides a significant opportunity to study and explain the structural style and deformation history of the region, with emphasis to study fractures pattern and fracturing mechanism with relation to the paleostress and insitu stresses, and the link to fractures hydraulic conductivity.

The proposed locations to be visited on this fieldtrip will demonstrate the stratigraphic relationship of the various rock units and their fracture systems that have been developed during long geological deformation. There are significant similarities between these exposed rocks and those units seen in the Abu Dhabi oil fields by means of depositional characteristics and fracture system and fracture related diagenesis (cementation/host rock alteration) with its impact on sealing potential.

FIELD TRIP 3

 

12 November, Tour of Masdar Institute followed by presentation on Experimental and Digital Rock Physics, Abu Dhabi, UAE

The one-hour presentation by professor Mohamed Sassi will discuss mechanical and multiphase flow properties from nano-tomography to whole core scale analysis, and is a collaboration study project between Masdar Institute of Science and Technology, the Petroleum Institute, ADNOC (Abu Dhabi National Oil Company) and Total. 

The UAE aims to develop Digital Rock Physics (DRP) as the novel and future reservoir engineering simulation tool, especially as applied to the super giant carbonate reservoirs of Abu Dhabi to help ADNOC attain its 70% EOR target.

The approach is to use an ascending scale of integration of experimental and numerical modelling techniques from the nano-scale offered by a dual Focalised Ion Beam-Scanning Electron Microscope (FIB-SEM) nano-tomography, through micro- and macro-XCT and all the way to whole core analysis offered by a tri-axial core flooding machine that operates under reservoir conditions of local stress, pressure and temperature, and that can accommodate rock core samples of up to 4” diameter and 8” length.

The core flooding system has three pressure intensifiers allowing the alternate injection of two fluids through the core sample while a third intensifier serves as a fluid receiver allowing the application of varying pore pressure gradient across the sample.

The nano- and micro-scale tomography is used to extract the complex pore scale and solid matrix network to be used within flow and mechanics simulators for the correct prediction of average macroscopic properties (porosity, permeability, formation factor, capillary pressure/saturation relations, relative permeability, elastic and shear moduli, and geomechanical/flow interactions) of carbonate rocks using exact or model based solutions of the governing flow and elasticity equations for the prevailing geomechanical and multiphase flow phenomena within the core sample. The tri-axial stress core flooding test results are used to validate the simulation results.

The objective of the study is to develop DRP as the future tool to generating fairly accurate, very fast, and cost-effective special core analysis (SCAL) properties to support reservoir characterisation and simulation tools

FIELD TRIP 4

12 November, Tour of Al Reyadah Facility, Abu Dhabi, UAE

Al Reyadah Abu Dhabi Carbon Capture Company is the first commercial company in the Middle East mandated to capture, process and transport CO2 for utilisation. It is a pioneer in bringing the benefit of CO2 capture and has positioned itself as the region’s only specialised company providing technologically mature and commercially self-sustaining CO2 capture projects for various industrial sectors, leveraged by its inherent strengths to study, design, build and operate CCS/CCUS projects worldwide.

The project will capture up to 800,000 of CO2 from Emirates Steel (ES) plant. The captured CO2 is a product of the direct reduced iron (DRI) process used in steel production which is than compressed to a supercritical condition (dense phase) and dehydrated and the finished product transported (via an 8” x 42.5 km buried pipeline—world’s highest pressure CO2 pipeline) from Mussafah industrial zone in Abu Dhabi to ADNOC oil fields in ADCO, where the CO2 is injected for EOR.

Al Reyadah with this project represents a viable solution to reduce emissions through a commercial set-up. The captured quantity is equivalent to the CO2 of 170,000 cars. The reduction of emissions will contribute to the global climate change mitigations in which UAE is a key leader.

Its future prospects include working towards multiple industrial scale CCUS projects and a CO2 pipeline network creating a ‘CO2 Hub’ aimed at reducing the carbon footprint in line with ADNOC’s 2030 Strategy and Abu Dhabi Vision 2030.