WES Trainings

Downhole Remediation Practices For Mature Oil And Gas Wells

Course Outline

Day - 1

Introduction to Downhole Remediation for Mature Wells

  • Understanding Mature Wells and Their Challenges
    • Defining mature wells and typical lifecycle stages
    • Common issues faced in mature oil and gas wells: decline in production, mechanical failures, and formation damage
    • Importance of downhole remediation for asset longevity
  • Well Integrity Assessment
    • Assessing casing and tubing integrity
    • Identifying and mitigating risks such as leaks, corrosion, and pressure integrity loss
    • Tools and technologies for well integrity inspection (e.g., Casing Inspection Logs, Downhole Cameras)
Day - 2

Common Remediation Techniques

  • Acidizing and Stimulation
    • Introduction to acid treatments: matrix acidizing and acid fracturing
    • Techniques for solving problems such as scale, mineral deposits, and formation damage
    • Acidizing design: choosing the right acid, concentrations, and volumes
  • Mechanical Interventions and Cleanouts
    • Using mechanical methods to restore wellbore flow and remove obstructions (e.g., wireline operations, hydraulic fishing)
    • Wellbore cleanouts to remove debris, paraffin, and other blockages
    • Milling and cutting techniques to address stuck equipment or casing failures
  • Hydraulic Fracturing for Mature Wells
    • Application of hydraulic fracturing to enhance productivity in mature, low-pressure wells
    • Techniques for selecting fracture treatments and evaluating well response
  • Scale and Paraffin Remediation
    • Chemical treatments and mechanical options for scale removal
    • Chemical treatments for paraffin buildup and plugging issues
Day - 3

Workover and Recompletion Operations

  • Workover Operations
    • Planning and executing a workover operation: wellbore intervention and repair strategies
    • Common workover techniques: tubing replacement, packer replacement, and perforation optimization
  • Recompletion of Mature Wells
    • Reentry techniques for recompleting a well to enhance production
    • Selecting new reservoir zones for completion based on well performance and reservoir characterization
    • Tools for recompletion: perforating guns, wireline equipment, and coiled tubing
  • Downhole Equipment Maintenance and Replacement
    • Overview of downhole tools: pumps, valves, packers, and tubing
    • Maintenance schedules and guidelines to extend tool lifespan and ensure optimal performance
    • Best practices for managing mechanical failures and minimizing downtime during interventions
Day - 4

Reservoir Management and Optimization

  • Reservoir and Wellbore Performance
    • Understanding reservoir behavior and production decline patterns in mature wells
    • Techniques for optimizing recovery factors in low-production wells
    • Integrating downhole remediation techniques with reservoir management strategies
  • Enhanced Oil Recovery (EOR) in Mature Wells
    • Application of EOR techniques in aging reservoirs
    • How remediation efforts complement EOR methods like water flooding, CO2 injection, and chemical flooding
    • Evaluating when to apply EOR techniques based on well performance and geological conditions
Day - 5

Economic Considerations, Safety, and Best Practices

  • Cost Considerations and Budgeting for Remediation
    • Estimating costs for various downhole remediation techniques and interventions
    • Analyzing cost-effectiveness: balancing remediation costs with expected production increase
    • Return on Investment (ROI) calculations and decision-making
  • Safety and Environmental Management in Well Interventions
    • Health, safety, and environmental risks associated with downhole remediation
    • Safety protocols for high-risk environments during intervention and remediation operations
    • Environmental regulations and best practices for reducing impacts of well remediation activities
  • Monitoring and Evaluating Remediation Success
    • Measuring the effectiveness of remediation activities through production data, pressure testing, and reservoir monitoring
    • Post-intervention evaluations and continuous improvement strategies
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