Applied Gas Reservoir Engineering

Level: Intermediate

Upcoming Sessions:

To Be Determined
Please Contact Us at tahmed@mtech.edu for more information
Instructor: Dr. Tarek Ahmed

Designed for:

Petroleum engineers and other professionals involved in the exploration, production, and evaluation of conventional and unconventional resources.

Course Overview:

This is a comprehensive course that that focuses on conventional gas reservoir performance. The course will introduce the participants to the latest development in decline and type curve analysis for these types of reservoirs. The course will also offer the practicing reservoir engineer with an in-depth description of the theory of transient flow analysis in gas reservoirs. Reservoir simulation (modeling) will be extensively used in the course with hands-on exercises. Participants are also encouraged to bring field data (PVT data, production data, etc.) to use and discuss in this 5-day course.

Course Outline:
  1. Understanding Gas-Condensate Reservoirs

  2. Laboratory PVT Data (CVD, CCE, and Swelling Tests)

  3. Condensate blockage and removing the blockage using the Huff & Puff approach

  4. QC/QA (Validation) of Laboratory PVT Data

  5. MBE for condensate reservoirs

  6. Modern Decline and Type Curves Analysis Models for Unconventional and Conventional Gas Reservoirs:
    • Traditional DCA
    • Arps decline curves
    • Modified Arps’ Method
    • Modern DCA.
    • Duong’s Method
    • Weibull Growth Model
    • Power Law Function
    • Modified Hyperbolic Function
    • Approximation of the Complete and Incomplete Gamma Function
    • Stretched Exponential Function

  7. Estimated Ultimate Recovery “EUR”
    • Type-Curve Analysis
    • Probability-Log Scale Performance
    • How to generate the P90, P50, and P10 Type Curves?

  8. Water Influx Models
    • Pot Aquifer Model
    • Schilthuis’ Steady State
    • Hurst’s Modified Steady State Model
    • The Van Everdingen and Hurst Unsteady State Model
    • Fetkovich’s Approach

  9. Material Balance for Gas Reservoirs
    • Gas Recovery Factor
    • Energy Plot
    • Common Problems with p/z plot
    • MBE for Water Drive Gas Reservoir
    • Abnormally Pressured Gas Reservoir

  10. Transient Flow Analysis and Gas Well Testing of Gas Reservoirs
    • Non-Darcy Flow
    • Approximation of the Gas Flow Equation
    • Traditional Back-Pressure
    • Isochronal Test
    • Modified Isochronal Test
    • Laminar-Inertial-Turbulent (LIT) Treatment
    • Single-Point Rate Test
    • Estimating Average Pressure

  11. Modern Inflow Performance Relationship “IPR”
    • Vertical Well IPR
    • Horizontal Well IPR