Oil and Gas
Oil and Gas | Reservoir Engineering
PVT Analysis for Unconventional Hydrocarbon Fluids
Format and Duration:
2 days
Pressure-volume-temperature (PVT) analysis is the process of determining fluid behavior and properties of the produced oil and gas samples from an existing well. PVT analysis has been well-established for the unconventional reservoirs. However, the unconventional resources such as source rocks bring in new uncertainties into the analysis. These are mainly due to presence of a large range of pore size distribution from fractures and micro-cracks, down to nanometer-scale pores. The fluid PVT is influenced by strong interactions with the organic (kerogen) matrix walls and, at the lower end of the pore size distribution, by the so-called nano-confinement effects. Currently, the industry lacks predictive fluid models that can be used with the existing reservoir tools such as the flow simulation models for production forecast and optimization. Also, it is not clear whether the nano-confined fluid behavior has the potential to impact the production trends. For example the release of nano-confined fluids from the formation have been proposed as the source of erratic produced GOR values experienced in the field. This course is a treatise on PVT analysis for the unconventional fluids. Prediction of the changes in fluid properties and phase behavior of the nano-confined fluids and the deviations from the conventional (or bulk) fluids is the main interest. An in-house multi-scale compositional simulation model (including nano-pores and large-pores) will be used to forecast the production trends and to show the impact of nano-confinement effects.
Schedule
Course Overview
Learning Outcomes
Paticipants will learn to:
- Quantify the nano-confinement effect during the fluids in-place calculations.
- Learn to predict recovery from kerogen.
- Learn to use equation of State for fluid under confinement.
- Learn to consider the capillary pressure during the flash calculations.
- Develop compositional flow simulation models for shale gas/oil reservoirs.
Course Content
Day 1 – Conventional Wisdom– PVT for Bulk Fluids
- Phase Behavior of Bulk Hydrocarbon Fluids
- Equations of State
- Properties of Five Reservoir Fluids
- Recombination of Surface Fluids
- Gas-liquid Equilibria
- Flash Vaporization and Differential Vaporization
- Surface Separator Calculations for Oil and other fluids
- K-factors for Separator Calculations
- Equilibrium Ratio Correlations and Convergence Pressure Estimation
- Gas-liquid Equilibria Calculations with Equation of State
- Atomistic modeling of Recombined Surface Fluid mixtures and Validation using PVTSim
Day 2- Unconventional Fluids- The State of the Art
- Phase Behavior of Nano-confined Hydrocarbon Fluids
- Equations of State for Nano-confined Hydrocarbon Fluids*
- Re-distribution of Recombined Surface Fluid Mixtures using
Membrane Model* - Occurrences of Five Reservoir Fluids as Redistributed Fluid
Mixtures in Nano-pores based on molecular simulations - Capillary Condensation** of Re-distributed Fluid Mixtures in
Nano-pores - Hydrocarbon in-place calculations for dry gas, wet gas, condensate
and oil formations using a new volumetric method** in presence of nano-confined
fluids - Thermodynamic Recovery from Nanopores during pressure depletion
using membrane model * - Vaporization†of Capillary Condensed Fluid Mixtures using Lean Gas Injection and enhanced oil-gas
recovery from nanopores - In-house Multi-scale Compositional EOS Reservoir Flow Simulator
coupled with Molecular simulations of Nano-confined Fluids Release - Simulated Production Trends in the Presence of Nano-confined Fluids
Instructors
Yucel Akkutlu
Background
Dr. Yucel Akkutlu is Rob L. Adams ’40 Professor in Petroleum Engineering and William Keeler faculty fellow at Texas A&M University, College Station, TX, USA. He previously worked as a faculty for the University of Oklahoma, USA, and University of Alberta, Canada. He is a chemical engineer and received Ph.D. in petroleum engineering from the University of Southern California in Los Angeles. He teaches undergraduate and graduate-level courses in petroleum reservoir engineering, petrophysics, and physical sciences.
His research focuses on characterization and exploitation of unconventional oil and gas resources, enhanced oil recovery, and oilfield chemistry. He has written more than 100 peer-reviewed journal articles and conference proceedings, six book chapters, and has four patents. He is the author of “Nano-confined Petroleum Recovery from Source Rocks,” which will be published in 2020. He has received over $3 million in external research funding during the last 10 years from sources such as the US Department of Energy (DOE), Natural Sciences and Engineering Research Council of Canada (NSERC), and the unconventional oil and gas industry.
He is a distinguished member of the Society of Petroleum Engineers (SPE). He was the executive editor of the SPE Journal 2013-2016. He was 2014-15 SPE distinguished lecturer. He received 2020 SPE International Lester C. Uren award, 2017 TAMU-Association of Former Students teaching award, 2016 TAMU-Association of Former Students distinguished achievement award, and 2015 AIME Rossiter W. Raymond memorial award. Akkutlu served in various SPE, EAGE, and NSERC committees.
Affiliations and Accreditation
PhD University of Southern California - Petroleum Engineering
MSc University of Southern California - Petroleum Engineering
BSc Hacettepe University - Chemical Engineering
Courses Taught
N274: Unconventional Resource Engineering for Geoscientists
N279: Geological Characterization and Engineering of Unconventional Oil and Gas Shales: Classroom and Field Seminar (Oklahoma, USA)
N484: Resource Management for Unconventional Oil and Gas Plays
N956: Enhanced Oil Recovery using CO2: Techniques, Practices and Simulation
N973: Reservoir Engineering for Unconventional Gas and Tight Oil Reservoirs
N989: Rate and Pressure Transient Analysis for Unconventional Reservoirs
RM01: Fundamentals of Unconventional Reservoir Engineering for Earth Scientists
Accreditation and Certification
CEU: 1.4 Continuing Education Units
PDH: 14 Professional Development Hours
Certificate: Certificate Issued Upon Completion
RPS is accredited by the International Association for Continuing Education and Training (IACET) and is authorized to issue the IACET CEU. We comply with the ANSI/IACET Standard, which is recognised internationally as a standard of excellence in instructional practices.
We issue a Certificate of Attendance which verifies the number of training hours attended. Our courses are generally accepted by most professional licensing boards/associations towards continuing education credits. Please check with your licensing board to determine if the courses and certificate of attendance meet their specific criteria.