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High-Res Characterisation of Unconventional Reservoirs

GEOLOG has developed an innovative workflow, integrating wellsite activity with laboratory work to define a comprehensive, high-resolution understanding of unconventional reservoir properties.
This article appeared in Vol. 16, No. 6 - 2019

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High-Res Characterisation of Unconventional Reservoirs

© GEOLOG. Unconventional activities constantly require new technological approaches and quick answers to optimise well placement, completion strategies and address future drilling campaigns. Unconventional reservoirs show a high level of heterogeneity and complexity, entailing high resolution tools. 

Integration of fluid characterisation with organic facies and rock facies distribution can provide key information for the most efficient exploitation of assets, adopting the best completion solutions. For this, GEOLOG has developed an innovative workflow, integrating wellsite activity with laboratory work to define a comprehensive picture of reservoir properties. Laboratory studies can define a detailed distribution of organic matter (OM) facies, based on OM characterisation and analyses of autochthonous and migrated hydrocarbons. The further step is to combine organic facies distribution with that of rock facies, obtained through rock characterisation using XRD, XRF and SEM analyses and interpreted in the frame of chemostratigraphic criteria. 

The final result of this exercise is a deep integrated knowledge of reservoir features that can be used for better, faster interpretation of data obtained while drilling, to take timely decisions, especially for completions. The investment in lab analyses is largely remunerated by greatly added value while drilling and by the optimisation of operations and of future production.

Further Reading on Reservoir Characterisation

Wellsite Mud Logging and Reservoir Geochemistry
Mario A. Chiaramonte; Geolog International
Wellsite mud logging and reservoir geochemistry results in a better reservoir characterisation in real time, improving performance and reducing costs.
This article appeared in Vol. 15, No. 6 - 2018

Reservoir Rock Characterisation Using Raman Spectroscopy
Marybeth Wegner, Grant A. Myers, Ph.D. and Nathan Nicholas; WellDog
Raman Spectroscopy enables precise reservoir rock characterisation studies and provides invaluable insight into the reservoir's heterogeneity and other fine-scaled details.
This article appeared in Vol. 15, No. 6 - 2018

Improving Reservoir Characterisation
Lucy MacGregor, RSI Inc.
Reservoir characterisation can be improved through the integrated analysis of CSEM, seismic and well log data.
This article appeared in Vol. 12, No. 1 - 2015

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