Course Overview

Why PVT Analysis is important? PVT properties analysis for a gas reservoir fluid is helpful to understand and predict the volumetric performance of the gas reservoir as a function of pressure and temperature. It is essential to gain knowledge of the PVT properties of gas reservoir fluids.

Fluid properties are usually determined by the laboratory analysis where experiments need to be performed on samples of subsurface reservoir fluid. During the unavailability of experimental based measured properties, it is essential to predict the gas properties based on empirical correlations.

PVT properties provide insight to design gas reservoir depletion process and surface production facility design when fluid produce at the surface. These fluid properties are further utilised for designing a reservoir simulation model to predict the future performance of the reservoir.

This Zoe training course will empower you with complete information and knowledge about PVT properties determination of a gas reservoir fluid. Through this course, you will be able to determine the properties of a gas reservoir fluid using experimental and correlation tools. This will enhance understanding of gas reservoir handling during production and for a reservoir engineer to improve the implementation of the reservoir simulation model for a gas reservoir.

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

Training Methodology

This collaborative PVT Properties Analysis of Gas Reservoir Fluids course, will comprise the following training methods:

• Lectures
• Seminars & Presentations
• Group Discussions
• Assignments
• Case Studies & Functional Exercises

Zoe Talent Solutions follows the ‘Do-Review-Learn-Apply’ model.

Organisational Benefits

With professionals undergoing this PVT Properties Analysis of Gas Reservoir Fluids course, organisations will benefit in the following ways:

• Accurate estimation of initial Gas in Place and Total Gas production from the reservoir
• Step by Step review of gas field development plan
• More accurate Prediction of PVT properties
• Better understanding of Gas and Gas condensate reservoir fluid behaviour during depletion
• Accurate fluid sampling process specially for gas condensate reservoir
• Detailed and Accurate description of PVT reports
• Quality Assurance and Quality Checks on PVT reports
• Review of data necessary for a good reservoir characterization and techniques
• Appropriate design and installation of surface and downhole production equipment’s
• Detailed investigation on laboratory-based data and correlation-based data & their comparison analysis
• Accurate PVT data and description to enhance credibility of Reservoir simulation study
• Application of advance simulation tools and technology to enhance the quality of the results
• Correlation based PVT data description to avoid costlier laboratory-based PVT analysis

Personal Benefits

Professionals opting for this PVT Properties Analysis of Gas Reservoir Fluids course will benefit in the following ways:

• Complete understanding and detailed information about PVT analysis for Gas and Gas condensate reservoir
• Greater understanding and knowledge to review various PVT reports from the field
• Quick identification of crucial parameter for reservoir engineering calculation from PVT reports
• Increased knowledge and confidence to train other professionals on essential features of PVT analysis and PVT Modeling
• A sense of pride from contributing to organisational credibility and development through accurate determination of reservoir fluid properties and reserve estimation
• Better understanding and exposure to work with advanced technology and tools associated with simulation software
• Enhanced skillset and capabilities to assume higher roles and responsibilities involving Reservoir Simulation Study

Who Should Attend?

• 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