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Hydraulic Fracturing Engineering and Software Solution, for Your Most Challenging Reservoirs.


Changes – StimPlan
7.20 First Quarter 2017

StimPlan Version 7.20 & Beyond

  • Sensitivity Studies- Expand on “Batch” capabilities to better allow for sensitivity studies.
    Run Multiple Pump Schedules
  • Shift Geologic Layering- Geologic layering input for horizontal wells is normally created from offset vertical penetration logs. However, the actual layer depths (and thicknesses) may change along the horizontal wellbore:
    Rambo 0709 1-22H Wellbore vs Top and Bottom of WDFD Target Spaced 4CLS@076 for 16 Stage totals
    A new input has been added allowing the Geologic Layering to be shifted (creating a new Geologic Model) for each stage. Future versions will allow input for formation dip directly.
    Shift Geologic Layering NSI
  • HELP – Continue to expand help system to include theoretical description of numerical simulations and more “engineering” discussion.


  • After Closure Analysis- Added Spherical Flow Analysis. Also improved Type Curve Analysis to automatically calculate the reservoir pressure associated with a type curve match.

Reservoir Simulation Compatibility

  • REXCEL/SENSOR – Direct output of gridded fracture simulation results as input to this reservoir model for reservoir simulations. This joins the direct output already in place for other reservoir simulators such as “Well whiz” Halliburton’s “QuikLook”, and CMG.

StimPlan 3D Simulations

  • Stress Interference – With advances in computer speeds, the simulation has been changed to a more rigorous formation using Finite Element techniques. This allows the stress ahead of each fracture to be rigorously calculated for each time step. A separate memo will be distributed discussing the implication of this more rigorous approach.

StimPlan Shale

  • DFN Reservoir Simulations – The Discrete Natural Fracture Network inputs can be transferred to the reservoir simulation for a rigorous simulation of a natural fractured reservoir.
  • Stage-to-Stage Interference – direct inputs for performing Stage-to-Stage interference simulations.


These items are already part of “Version 8” for release in 2017.
  • Complete Rewrite – This will promote better stability.
  • User Interface – Completely new user interface based on user comments & ideas. This may include “dynamic dialogs”. That is depending on the type of project, certain inputs may not be required. Thus, these inputs would disappear from the input dialogs eliminating confusion about a variable that is not even required.
    A very preliminary view of the new interface is seen below, and an “Alpha” version will be ready shortly and we will be actively soliciting input on how to improve this.
  • Geologic Layering
  • Mobile StimPlan
    • Entering data from iPad (or any tablet), then running simulation on Intranet or Internet server, then retrieving results back to tablet.
    • Reviewing/analyzing real-time data on site on iPad (or other tablet)
  • Help System – Help system enhanced to include ‘engineering help”. For example, this might include sections on Pre-Frac test design along with the normal “StimPlan Help” on using the analysis features.