ADVANCED FORMATION LOGGING: A CASE STUDY OF REVEALING THE TRUE POTENTIAL OF A GAS RESERVOIR
Date- Feb 10 2016
BP Plaza Westlake 4 - Room 107
WL4: 14110 Grisby Rd. - Houston, TX 77079
Time: Lunch 11:30, Presentation at 12:00
Cost: Free. Lunch: not provided, bring your own or purchase in the BP cafeteria
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The economic decision to develop a new field depends heavily on the reservoir quality which, in turn, is based on two factors: the storage capacity and the flow capacity of the reservoir. The former is controlled by porosity and hydrocarbon saturation, and the latter by permeability. Recent logging technology developments, especially in NMR, geochemical, and dielectric logging, aim to improve log-derived interpretations and reduce the uncertainties of the evaluation. This paper presents a frontier Western Australia case study where the integration of advanced and standard logging tools is used to reveal the true potential of a gas reservoir. Key elements were to compute porosity based on geochemical logs, irreducible saturation based on dielectric logs, and Timur-Coates permeability based on the dielectric irreducible saturation, and make the interpretation scheme adaptable to LWD conditions. For particular compartments the new approach increased gas in place by up to 22% and flow capacity by close to 300% compared to conventional methods.
Emmanuel Toumelin is currently the team lead for Petrophysics R&D and Support in Chevron ETC, in Houston. He graduated with a PhD from the University of Texas at Austin and has been a petrophysicist with Chevron since 2006, first in MidContinent Business Unit, and then in Energy Technology Company. He published or presented over 20 topics in the fields of NMR, dielectrics, conductivity, pore-scale modeling, and new NMR logging applications. He also received several honors from the SPWLA.