Intelligence Stimulation Software

StimExpert

StimExpert CMA

Carbonate Matrix Acidizing Simulation & Evaluation System


Overview

StimExpert CMA is intelligent design and evaluation software of carbonate matrix acidizing, which could be used in acidizing of multi-layer or long horizontal section well. The mechanism of carbonate matrix acidizing is using wormhole to penetrate polluted zone near wellbore, which could result to communicate reservoir and wellbore, eliminate pollution and increase well productivity. The software provides wormhole propagation visualizing, multi-layer acidizing simulation, real-time monitor, and acidizing effect evaluation. Meanwhile, it can simulate wormhole distribution and skin factor which have influenced by temperature, lithology, acid properties, acid liquid injection rate and other acidizing operation parameters. Finally, it could be used to optimize acid system, acid liquid consumption and operation parameter of acidizing process, and monitor real-time skin factor.


Key Features

  • Visualizing wormhole propagation in acidizing simulation.
  • Simulating wormhole distribution influenced by temperature, acid properties, lithology, acid injection rate.
  • Simulating wormhole shape influenced by porosity distribution.
  • Acidizing simulation in multi-layer, thick layer, horizontal well.
  • Calculating skin factor in acidizing process.
  • Real-time acidizing monitor.

Key Functions

  1. Wormhole distribution simulation
    • Temperature, acid properties, lithology, acid injection rate.
    • Porosity distribution.
  2. Complex acidizing simulation
    • Simulating wormhole propagation in multi-layer, thick layer, horizontal well.
    • Calculating acid invasion length, wormhole length and skin factor in each layer.
    • Optimizing acid consumption and injection rate.
    • Diverting acid decision.
  3. Acidizing effect evaluation
    • Simulate wormhole propagation with operation time in each layer.
    • Calculate skin factor in each layer in acidizing process.
    • Evaluate increasing well productivity after acidizing.
  4. Real-time acidizing monitor
    • Real-time pressure and injection rate data will be converted to skin factor and injection time data based on transient pressure analysis theory in order to show acidizing effect and evaluate well productivity.