[PDF][PDF] Study of drill cuttings porosity for formation evaluation

ST Dang, MM Rolke, CH Sondergeld… - … Symposium of the Society …, 2017 - jgmaas.com
International Symposium of the Society of Core Analysts, 2017jgmaas.com
Petrophysical measurements on drill cuttings have an economic appeal especially in
unconventional formation evaluation. Drill cuttings are readily available, a byproduct of
drilling, and can potentially provide a variety of reservoir quality parameters, such as total
organic carbon, porosity, mineralogy, thermal maturity, pore structure and habit, mechanical
elastic properties, etc. While log and core data are only available for a limited number of
wells, drill cuttings are available for all wells. Therefore, the determination of porosity using …
Abstract
Petrophysical measurements on drill cuttings have an economic appeal especially in unconventional formation evaluation. Drill cuttings are readily available, a byproduct of drilling, and can potentially provide a variety of reservoir quality parameters, such as total organic carbon, porosity, mineralogy, thermal maturity, pore structure and habit, mechanical elastic properties, etc. While log and core data are only available for a limited number of wells, drill cuttings are available for all wells. Therefore, the determination of porosity using drill cuttings can provide a more spatially detailed representation of a formation, which is critical because shale plays can be both vertically and laterally heterogeneous. Porosity is a primary variable controlling hydrocarbon storage of within a formation. There are multiple laboratory methods to directly measure porosity in cores—Low Pressure Pycnometer (LPP), High Pressure Pycnometer (HPP), Nuclear Magnetic Resonance (NMR), Mercury Injection (MICP), etc. A challenge arises when porosity is obtained from drill cuttings due to the inability to directly measure bulk volume of a sample. This study presents the application of a new methodology to measure the porosity from drilling cuttings.
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