TRAINING PRODUCTION FORECAST USING DECLINE CURVE ANALYSIS (DCA)

DESCRIPTION

Decline curve analysis (DCA) is a graphical procedure used for analyzing declining production rates and forecasting future performance of oil and gas wells. Oil and gas production rates decline as a function of time; loss of reservoir pressure, or changing relative volumes of the produced fluids, are usually the cause. Fitting a line through the performance history and assuming this same trend will continue in future forms the basis of DCA concept. It is important to note here that in absence of stabilized production trends the technique cannot be expected to give reliable results.

OUTLINE COURSE

• Overview

• Basic Principles of DCA

• DCA Methods

  • Exponential Decline
  • Hyperbolic Decline
  • Harmonic Decline

• Decline Curve Analysis Steps

  • Production data plot
  • Determine the Declining Production Trend Period
  • Check the period on the declining trend of production
  • Plot :
    • Log Qo vs Np
    • Log Oil Cut vs Np
    • Trend DCA
  • Prediction of existing wells
  • Predictions for adding new wells
  • Change from Log Qo vs Np to Log Qo vs Time. Final results:
    • Production Forecast
    • Ultimate Recovery
    • Remaing Reserve

RECOMMENDED AUDIENCE

• Reservoir Engineers
• Production Engineers & Asset Managers
• Petroleum Economists & Reserves Evaluators
• Geoscientists & Field Development Planners
• Data Analysts & Production Technologists