Evaluate Reservoirs to Optimize Completions

Challenge

How can I more accurately characterize reservoir rock and fluid properties to detect producible zones, confidently estimate net pay and design more effective wells while avoiding drilling hazards?

Solution

Accurate reservoir characterization and modeling involves leveraging core samples, downhole formation- evaluation measurements, seismic-visualization technology and seismic-imaging techniques. Data developed from these sources enable a better understanding of the spatial distribution of reservoir properties, including lithology, porosity, permeability, fluid saturation and pore pressure. Understanding favorable or hazardous reservoir properties permits operators to design more effective drilling and production programs while avoiding drilling hazards and unnecessary risks.

Reliable completion optimization requires better knowledge of reservoir properties, including the physical and mechanical properties of the rock. These can be obtained from well tests, logging, core data, production analysis of offset wells, stress-field measurements and by understanding reservoir fluid properties.

In the wellbores of West Africa, dealing with naturally occurring reservoir heterogeneities can be a challenge. Offshore West Africa, a number of deepwater seabed features indicate the presence of sand units with the potential to generate shallow water flows under the right depositional conditions. Offshore Angola, buried sheets and units have been portrayed by near-seabed volume attributes generated from data sets. In both deepwater Nigeria and Angola, buried, meandering channel fill sequences have also been recognized.

Halliburton understands these challenges and has successfully improved formation integrity by providing quality reservoir rock and fluid measurements. Our LWD/MWD downhole tools and formation-evaluation technology provide quality reservoir rock and fluid measurements at the wellbore. Innovative subsurface imaging and interpretation technology enable greater resolution of seismic properties that can be used to predict reservoir properties away from the wellbore. Spectral decomposition of seismic data permits greater resolution of reservoir characteristics related to physical reservoir properties. Each of these images can provide unprecedented understanding of reservoir heterogeneities, boundaries and thicknesses.

Our earth-modeling technology, which will be available later this year, will facilitate a collaborative multi-disciplinary approach by integrating all available data, from downhole measurements to petrophysical analysis and seismic interpretations. Together these results help ensure more accurate reservoir description.

Halliburton's software combines reservoir fluid, simulation tools and optimization technology in an open and adaptable framework. The results, maximize the value of the entire asset by integrating subsurface, surface and economic workflows while mitigating risk. This software provides integrated reservoir simulation workflows that generate results faster than any other commercial simulation solution.

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