An accurate volumetric calculation method for estimating original hydrocarbons in place for oil and gas shales including adsorbed gas using high-resolution geological model

Jérémie Bruyelle, Dominique R. Guérillot

Research output: Contribution to conferencePaper

Abstract

The emergence of liquid-rich and gas shale reservoirs presents major strategic opportunities and challenges for the oil and gas industry. Accurate estimation of Stock Tank Oil and Gas Initially In Place (STOIIP & GIIP) is one of the priority tasks before defining the reserves. An accurate method is proposed to calculate hydrocarbon volumes using high-resolution geological models taking advantage of huge improvements made during last decade in the field of characterization and geological modeling of unconventional reservoirs. This exact method provides fluids in place in reservoir and surface conditions with an extended black-oil formulation including condensates. The physic including the equilibrium between gravity and eventually capillary forces and adsorbed gas is fully respected using, for each lithofacies, the most accurate available geological description with 3D porosity distributions, Langmuir isotherms (Langmuir, 1918), capillary pressure curves, and thermodynamic data. Adsorbed and liquid-rich gases are considered. This method calculating hydrocarbons in place is the natural endpoint of any workflow devoted to the geological modeling of newly discovered reservoirs, particularly suited to heterogeneous reservoirs. The knowledge generated by this calculation has significant impact on fracturation programs to increase the recovery rate and field development planning.

Original languageEnglish
Pages3870-3881
Number of pages12
Publication statusPublished - 1 Jan 2014
EventInternational Petroleum Technology Conference 2014: Unlocking Energy Through Innovation, Technology and Capability, IPTC 2014 - Doha, Qatar
Duration: 19 Jan 201422 Jan 2014

Other

OtherInternational Petroleum Technology Conference 2014: Unlocking Energy Through Innovation, Technology and Capability, IPTC 2014
CountryQatar
CityDoha
Period19/1/1422/1/14

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ASJC Scopus subject areas

  • Management of Technology and Innovation
  • Geochemistry and Petrology

Cite this

Bruyelle, J., & Guérillot, D. R. (2014). An accurate volumetric calculation method for estimating original hydrocarbons in place for oil and gas shales including adsorbed gas using high-resolution geological model. 3870-3881. Paper presented at International Petroleum Technology Conference 2014: Unlocking Energy Through Innovation, Technology and Capability, IPTC 2014, Doha, Qatar.