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PVT (Pressure-Volume-Temperature) Properties Analysis of Gas Reservoir Fluids

Introduction

PVT (Pressure-Volume-Temperature) Properties Analysis of Gas Reservoir Fluids

Course Objectives

The key objective of this PVT Properties Analysis of Gas Reservoir Fluids course is to empower professionals to:

• Apply the knowledge of phase behaviour during production from gas reservoir using phase diagram
• Identify and explain key points of the phase diagram of different gas reservoir systems
• Predict PVT properties of gas reservoir fluid required for volumetric calculations
• Explain the gas reservoir fluid individual components physical and critical properties
• Determine the gas properties from empirically derived correlations
• Enumerate Pressure Volume Temperature (PVT) relationships and Chemical and Physical Properties of gases
• Demonstrate Laboratory based experiment to analyse the gas reservoir fluid properties
• Understand complex mathematical expression of various equation of states and their importance for gas reservoir fluid
• Describe and define the pseudocritical pressure and pseudocritical temperature and be able to use them to determine the ‘Z’ value for a gas mixture
• Compare laboratory-based PVT data and correlation-based PVT data
• Get representative sample of reservoir fluid samples for laboratory analysis
• Measure the Pressure Volume relationship using Constant Composition Expansion Tests
• Laboratory analysis of Gas condensate reservoir fluid systems e.g., Constant Volume Depletion Test
• Estimate Gas initially in place, amount of Gas produced during the time period and remaining gas inside the reservoir
• Perform gas field depletion study
• Incorporate the gas reservoir fluid data into reservoir simulation study
• Make decision on gas field development plan

Who Should Attend?

This PVT Properties Analysis of Gas Reservoir Fluids course is designed for a diverse range of petroleum industry professionals:

• Chemical, Petroleum and Reservoir Engineers working in oil and gas industry
• Geologist, Geophysicist and Petro physicist who work with the team of Reservoir and Production Engineers
• Production Engineer, Well Engineer and Surface Engineer who want to have insight about gas flow in production tubing, depletion from reservoir and surface facility design and requirements
• Upstream Oil and Gas Analyst who would like to understand Gas and Gas condensate market
• Business Development Executives who want to understand about Gas operation business
• Data Scientists and Process Data Engineer who want to get familiar with gas data
• Software Engineers who want to get familiar with different mathematical correlations used in Equation of states
• Fresh Graduates, Non-Engineers assisting Senior Engineers for gas reservoir development
• Any other professional interested to know more about PVT analysis of Gas reservoir fluid

Course Outline

The course covers the following topics regarding PVT Analysis of Gas Reservoir Fluids:

Module 1: Fundamentals of PVT (Pressure – Volume – Temperature)

• Overview of PVT Analysis
• Composition of Hydrocarbon Fluid
• Classification of Gas Reservoir
  • Retrograde gas-condensate
  • Near-critical gas-condensate
  • Wet gas
  • Dry gas
• Phase Behaviour for Gas Reservoir System
• Physical Characteristics of Gas Reservoir System

Module 2: General Properties & Behaviour of Natural Gas

• Apparent molecular weight, Ma
• Specific gravity, γg
• Compressibility factor, z
• Density, ρg
• Specific volume, v
• Isothermal gas compressibility coefficient, cg
• Gas formation volume factor, Bg
• Gas expansion factor, Eg
• Viscosity, μg

Module 3: Reservoir Fluid Sampling Methods

• Fluid Sampling methods
  • RFT sampling
  • Bottom hole sampling
  • Separator sampling
  • Wellhead sampling

Module 4: PVT Analysis and Quality Control

• Compositional Analysis and Quality Control
• Gas Chromatography
• Natural Gas Analysis
• True Boiling Point Analysis (TBP)
• Bottom hole sample composition
• Recombined sample composition

Module 5: PVT Experiments (Gas Condensate Reservoir)

• Recombination and analysis of separator samples
• Measuring the pressure-volume relationship
• Constant-composition expansion test
• Constant – Volume Depletion Test (CVD)
• PVT Data Accuracy
• PVT Data Consistency Checks

Module 6: PVT Laboratory Analysis Reports

• Dry Gas Reservoir Reports
• Gas Condensate Reservoir Reports

Module 7: Application of PVT Analysis

• Gas Reservoir Engineering Calculations
• Fluid Flow Behaviour
• Gas in Place Calculation

Module 8: Fundamental of Cubic Equation of State

• Equation of State -Ideal Gas Law
• Behaviour of Real Gases
• Cubic EOS
• Der Waals
• SRK
• Peng Robison

Module 9: EOS Application in Reservoir Fluid Characterization

• Fluid Modeling
• PVT Matching
• EOS Model
• Matching EOS model with experimental data
• PVT EOS simulation study