Summary

New, enhanced-performance technologies and tools are now available to facilitate accurate reservoir characterization in unconventional plays. They help to identify and mitigate potential hazards that drilling engineers may encounter by integrating interpretation, characterization and reservoir modeling information in a shared 3D canvas. The new technologies provide solutions for unconventional play types with a multi-domain approach across the entire workflow, from full-azimuth processing and imaging up to reservoir engineering, to reduce uncertainties and risk in the planning, drilling and completion decision-making process.

Introduction

The challenges for optimal well placement and completion in unconventional resource plays rely on a complex array of seemingly independent variables such as heterogeneous rock properties, anisotropy and natural sub-seismic fracture networks.

To maximize production rates, criteria such as water saturation, hydrocarbon content, physical and mechanical rock properties, in-situ stress fields, faulting, and fracturing must be evaluated and then quantified for integration into a single model. The results can efficiently impact drilling and development decisions. Both wireline log data (for rock and reservoir parameters) and seismic data (for rock fabric and property information between wells) need to be correlated into an integrated interpretation for reservoir characterization and discrete fracture model creation.

Interpreting high-quality seismic data through enhanced visualization techniques guides the geoscientist to a more precise characterization of the reservoir, enhancing predictions of the spatial and temporal conditions of trapping systems, the distribution of subsurface lithology, and reservoir properties, calibrated to the in-situ conditions observed at the wells.

New technologies help to identify and mitigate potential hazards that drilling engineers may encounter by integrating interpretation, characterization and reservoir modeling information in a unique 3D canvas, leading to a reduction in drilling risk.

The evaluation of rock and reservoir parameters is closely associated with the development of new technologies. These technologies are reviewed and then shown using Barnett and Eagle Ford examples, and culminate in well planning and drilling (geosteering).

URTeC 1582023

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