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6 - OGE-C - Oil & Gas - Completion and Production Engineering


OG-C 125 - Well Test Design and Analysis

Code Start Date Duration Venue
OG-C 125 12 December 2022 5 Days Istanbul Registration Form Link
OG-C 125 12 December 2022 5 Days Istanbul Registration Form Link
OG-C 125 06 February 2023 5 Days Istanbul Registration Form Link
OG-C 125 03 April 2023 5 Days Istanbul Registration Form Link
OG-C 125 29 May 2023 5 Days Istanbul Registration Form Link
OG-C 125 24 July 2023 5 Days Istanbul Registration Form Link
OG-C 125 18 September 2023 5 Days Istanbul Registration Form Link
OG-C 125 13 November 2023 5 Days Istanbul Registration Form Link
Please contact us for fees

 

Course Description

This course provides an extensive and practical knowledge in well test design and analysis aimed at evaluating well productivity and reservoir parameters in the best technical and economical way. It will deal with data acquired from various well completions, homogeneous and heterogeneous reservoirs, gas shale reservoir, as well as testing various production fluids, oil, gas, heavy Oil & Gas condensate. This course provides a comprehensive and practical understanding about performing set-up, design and analysis of well tests

Course Objectives

  • Describe practical and advanced Well Test Analysis methods and their applications
  • Discuss application of results derived from Well Test Analysis in geosciences and reservoir engineering
  • Perform design and analysis of pressure data acquired in wells completed in heterogeneous reservoirs
  • Perform design and analysis of pressure data acquired in water, polymers or steam injector wells
  • Discuss benefits and limitations of Well Test Analysis applied to non-conventional reservoirs
  • Discuss the theory of well test analysis
  • Identify main flow regimes and models
  • Carry out simple well test analysis
  • Define or recommend a well test design

Who Should Attend?

  • Production Operators
  • Field Production Personnel and Supervisors
  • Production Engineers
  • Asset Managers and Senior Managers
  • Asset Support Engineers
  • Process Engineers
  • Reservoir Engineers
  • Planning Engineers
  • Metering Staff
  • Production Accountants
  • Well testing, Completion and Workover Supervisor
  • Well testing, Completion and Workover Engineers
  • Petro physicists
  • Geologists

Course Details/Schedule

Day 1

  • Introduction to well testing, basic equations & methods
  • Practical well test operations: types of tests, equipment, safety and environmental issues
  • Productivity Index (PI), radius of investigation
  • Darcy's law and the diffusivity equation
  • Time superposition, multirate testing
  • Space superposition, boundary effect
  • Pressure curves analysis
  • Pressure derivative curves analysis
  • Wellbore conditions
  • Wellbore storage and skin effects
  • Infinite and finite conductivity vertical fracture
  • Well in partial penetration
  • Horizontal well
  • Skin factors, geometrical skin and well deliverability

Day 2

  • Well testing definition and applications, DST and rig less testing
  • Diffusivity equation
  • Types of flow regimes. Radial, pseudo radial, pseudo-steady state and steady state flow
  • Pressure derivative
  • Wellbore storage and skin effect
  • Drawdown and buildup pressure analysis: Superposition principle
  • Average reservoir pressure determination: Interference testing
  • Deconvolution method
  • GR correlation
  • Well test design
  • Test design methodology according to reservoir evaluation objectives
  • Common test string configurations: DST and rig less testing
  • Elaboration of testing program and contingencies
  • Real time vs. memory data acquisition
  • Pressure gauges: resolution, specifications and acquired pressure data quality control
  • Offshore & Onshore well testing
  • Reservoir and well candidates for test design

Day 3

  • Stimulated well testing
  • Infinite and finite conductivity fracture models
  • Linear and bilinear flow
  • Time to reach radial and pseudo steady state flow regimes
  • Wellbore storage effect and fracture skin
  • Determination of half-fracture length and fracture conductivity
  • Horizontal and fractured horizontal well
  • Pressure Transient Analysis applicable to horizontally multi fractured wells
  • Stimulated Reservoir Volume (SRV) determination
  • Time to reach fractures interference
  • Well interference due to frac operations
  • Effect of pressure-dependent rock properties on permeability

Day 4

  • Completion technology, design, and operation
  • Wellhead configuration
  • Completion equipment and requirements 
  • Christmas trees and it’s types
  • Surface equipment
  • Reasons for workovers and well preparation
  • Overview of surface and subsurface wellbore equipment and procedures
  • Blowout preventer stacks and components
  • Work string and production tubing
  • Auxiliary well control equipment
  • Plugs & packers
  • Verification of shut-in
  • Monitoring and recording during shut-in
  • Preparing for well entry
  • Wireline open hole operations
  • Contingency procedure for wireline and coiled tubing 
  • CBL & VDL tools and its evaluation

Day 5

  • Barrier management
  • Workover / completion fluid functions
  • Testing of downhole completion equipment
  • Testing of well control equipment connections
  • Well shut-in and well kill considerations
  • Bullheading
  • Volumetric method
  • Lube and bleed
  • Forward circulation
  • Driller’s method
  • Reverse circulation
  • Potential impacts of a well control event
  • Well integrity
  • Pressure control equipment / barrier envelope considerations
  • Hydrates
  • H2S considerations
  • Natural flowing and artificial well work over programs
  • Remedial cementing: squeeze procedures
  • Perforating operations
  • Plugback operations