MULTICORP

MULTICORP is a unique software package both in scope and approach. With its current and future development supported by our sponsors and ongoing experimental programs, it’s rapidly becoming an industrial leader for prediction of internal corrosion of oil and gas pipelines.

A transient mechanistic CO2 corrosion prediction software package, MULTICORP provides many new capabilities and enhancements to allow users to significantly expand the scope of internal pipeline corrosion analyses:

MULTICORP covers almost all key aspects of internal corrosion of mild steel oil and gas pipelines and is based on solid theoretical foundations, which include the models of:

Kinetics of electrochemical reactions at the steel surface, such as iron dissolution, hydrogen evolution, etc.
Kinetics of solid-state reactions at the steel surface, such as mackinawite scale buildup.
Dynamics of coupled transient transport of multiple species between the bulk solution and the steel surface, through the turbulent boundary layer and through a porous surface film.
Kinetics of chemical reactions including precipitation of solids such as iron sulfide, iron carbonate, etc.
Growth of iron carbonate and iron sulfide scales

Therefore, it is possible to reliably predict the effects of key variables that affect internal pipeline corrosion such as:

Effect of multiphase flow (two and three phase flow)
Effect of temperature (1-100 °C)
Effect of CO2 partial pressure (0 – 2 MPa)
Effect of H2S content (0 – 1 MPa)
Effect of organic acids (0 – 10,000 ppm)
Effect of pH and brine chemistry (pH3 – pH7)
Effect of steel type
Effect of inhibition by crude oil and/or corrosion inhibitors
Magnitude and morphology of localized attack

Highlights of software

Based on a mechanistic (theoretical) model, the software’s equations are faithful descriptors of the important physio-chemical processes underlying corrosion.
Besides providing immediate answers, the package allows the users to get a deeper insight into the root causes behind the problem, raising the user’s confidence in the provided answer.
MULTICORP is one of the few packages that seamlessly integrates a corrosion model with a multiphase flow model, a feature much needed by corrosion engineers.
The package has been extensively calibrated and verified with a reliable experimental database. Most of the data came from large-scale corrosion and multiphase flow laboratory experiments. In addition, a reliable field corrosion database, provided by the major oil and gas companies, has been used to verify the performance of the model.

Users from research institutes and oil companies: Over 2000
Different electrical chemisty models: 4
Countries and regions account for our user base: 10