Multicorp 6.0 Software

Overview

Below is information about the released version of MULTICORP™ software (6.0.1383).

This version of MULTICORP™ includes a number of improvements and upgrades which vastly improve the user interface in terms of fluidity, clarity, and robustness. MULTICORP™ is a corrosion prediction engine that enables the simulation of internal pipeline corrosion under various conditions and in various environments. This software was produced under collaborative joint agreement between the Institute for Corrosion and Multiphase Technology (ICMT) and its industrial partners under Corrosion Center Joint Industrial Project (CC JIP). The owner of the software is the ICMT and it gives the license to use this software to its CC-JIP members under specification defined in the CC-JIP contract that each industrial partner has signed. For more information, please visit us online at www.icmt.ohio.edu or email us at Contact.CorrosionCenter.org@ohio.edu. Ohio University copyright 2024. All rights reserved.

To sponsor CC-JIP research and obtain a copy of the MULTICORP™ software, please contact Dr. Bruce Brown.

About MULTICORP™ V6.0

The first design for MULTICORP™ V6 was developed in October 2020 from the staff at the ICMT working with a software/engineering company named evoleap (Figure 1). The new software had to have the inputs and outputs equivalent to those currently in MULTICORP™ V5, but needed to be on a platform different than a Windows-based program as was previously used. The choice was to develop a ”browser-based” program that could be used as a stand-alone, a company intranet, or a fully web-based interactive program to minimize future issues with changes in computer operating systems.

Figure 1. First concept GUI

The opening page of the software (Figure 2) includes choices (in order of normal use) whether to:

1. Create a Quick Case - which allows the user to enter the needed parameters to directly perform a corrosion prediction simulation before saving the results,
2. Create a new project - which allows the user to start with the file structure for naming and saving the results of each corosion simulation for point models and a line run that aids in keeping sets of specific field data separated for those who are working on several datasets at once,
3. Open an existing project - which allows the user to choose from the list of projects/simulations already completed for review and comparison.

Figure 2. Opening window choices for MULTICORP™ V6.0

MULTICORP™ V5 was initially released in October 2012 and enjoyed many developments and updates over the years which ended in the final release of MULTICORP™ V5.6 in December 2022. Updates to all of the research within the CC JIP up to that time were implemented in this version:

• "Buffering effect" instead of "direct reduction" for cathodic reactions associated with weak acids (H₂CO₃, HAc, etc.),
• Improvement of H₂S corrosion model for low pH₂S,
• Implemented high temperature CO₂ / H₂S model,
• Upgraded localized corrosion model,
• Improved composition and preciptation models,
• plus other improvements for useability.

Figure 3. Overview of conversion process from V5.6 to V6.0 of MULTICORP™

MULTICORP™ is a mechanistic model of CO₂ and H₂S corrosion related to internal pipeline corrosion for the upstream oil and gas industry. Research within the Corrosion Center Joint Industry Project (CC-JIP) is focused on the development of the MULTICORP corrosion prediction software. Specific research topics related to general and localized corrosion are integrated into students' MS and PhD degrees to provide a learning opportunity as well as developing leading edge research information with respect internal corrosion in oil producing pipelines. The understanding of the corrosion mechanisms gained from graduate student research completed within the CC JIP is incorporated into the MULTICORP™ corrosion prediction software to retain this valuable knowledge. All projects conducted by graduate students or post-doctoral researchers are supervised by Project Leaders, Dr. Bruce Brown and Dr. Marc Singer, and the Institute Director, Dr. Srdjan Nesic.

Figure 4. FLowchart of operation for MULTICORP™ corrosion prediction software

When using MULTICORP™, the user enters water chemistry and gas composition parameters, then the operating conditions are entered, which allows the user to review the environmental conditions within the pipeline. Next, the user enters the physical properties of the pipeline and the fluid flow parameters, which will calculate the flow pattern (stratified, slug, plug, or annular), wetting phase, wall shear stress, etc., based on the proprietary software developed at the ICMT. This helps the user understand the influence of the operating conditions on these parameters.

Once these sections of input parameters are completed, the user can run a simulation to see the corrosion rate trend with time. Since it is a mechanistic model, MULTICORP™ calculates the corrosion rate with time based on bare steel corrosion and determines the corrosion product layer formation on the bare steel, which influences the final corrosion rate. By running a Point Model simulation first, the user can confirm the validity of the data used for the simulation. This goal of this process is to minimize the chances of incorrect data entry.

After a successful Point Model has been simulated, the user can choose to "Create a Batch Run" or to "Create a Pipeline Model". These types of simulations use the first Point Model as a point of reference so the user can choose which parameters are desired to be modified (Batch Run) or what topography & pipeline properties are needed to complete the next series of simulations. MULTICORP™ will use the inputs to provide results comparable to corrosion issues that have been observed in the labroatory and in the field.

For questions about MULTICORP™, joining the CC JIP to obtain MULTICORP™, or assistance in operating the MULTICORP™ software, please contact Dr. Bruce Brown.

Help File

• Multicorp 6 Training available for Sponsors of CC JIP research.