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Services - Reservoir Engineering

Decline Curve Analysis

Decline analysis is a powerful tool for forecasting production from a well or group of wells, after there is sufficient production to establish a decline trend as a function of time or cumulative production. An accurate production decline analysis can be of great help to Engineers to draw conclusions about reservoir size and quality, and to identify operational problems such as liquid loading in the wellbore.

CalScan engineers use a custom-built DCA application to forecast future production and predict recoverable reserves.  Curve fitting the production history is applied through an interactive graphics procedure that allows to edit the production data on the graph and examine the quality of fit of the resulting decline curve. The forecasts can be manually edited or projected to any start date in the future.

Our Production decline analysis report includes;

  • Curves used for production forecasting such as Rate-Time, Rate-Cum, WC,OC-Cum, WOR-Cum etc.
  • Discussion of the decline curve types and constants.
  • Reliable estimates of recoverable reserves and recovery factors.
  • Oil, gas and water rates, gross rates, oil water ratio and water cut forecasts and plots.

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