BP Cassandra and Its Evolution: Discover AlloySelect for Modern Corrosion Predictions

BP Cassandra and Its Evolution: Discover AlloySelect for Modern Corrosion Predictions

The Evolution of Corrosion Prediction Tools: From BP Cassandra to AlloySelect

In the realm of corrosion engineering, accurately predicting corrosion rates is pivotal for the integrity of oil and gas assets. Historically, BP’s Cassandra software set a precedent by implementing the DeWaard-Milliams CO2 corrosion model, enriched with BP’s proprietary insights. Known as “Cassandra 98,” this tool was a benchmark in its era, offering predictions based on CO2 content, temperature, and full water chemistry analysis.

Understanding BP Cassandra’s Legacy

BP Cassandra was a groundbreaking tool that provided BP engineers with an internal resource for corrosion prediction. However, its maintenance ceased, and the software, designed for early versions of Microsoft Excel, became obsolete. Moreover, unauthorized versions found on the internet could potentially yield inaccurate results, highlighting the need for more reliable, accessible, and updated corrosion prediction solutions.

AlloySelect: The Next Generation in Corrosion Prediction Software

Recognizing the industry’s need for an advanced, user-friendly, and accurate corrosion prediction tool, Oil and Gas Corrosion Ltd developed AlloySelect. As a cloud-based platform, AlloySelect offers significant improvements over traditional models like BP Cassandra:

  • Enhanced Accuracy: Utilizes a modified de Waard-Milliams model, incorporating H2S effects and a specialized pH model for precise CO2 corrosion rate calculations.

  • Materials Selection: Guides users in selecting corrosion-resistant alloys for sour service applications, ensuring compliance with international standards such as NACE MR0175, API 6A, API 5CT, and more.

  • Accessibility and Compatibility: Available on any device with an internet connection, without the need for software installation, AlloySelect breaks barriers of accessibility and compatibility.

  • Cost-Effectiveness: Offers the most competitive pricing in the market, eliminating the need for expensive licenses or subscriptions.

Why Choose AlloySelect?

  • Data-Driven Decisions: Built on laboratory data and validated with real-life oilfield data, AlloySelect ensures reliability in every calculation.

  • Global Standards Compliance: Meets and exceeds requirements of international standards, including ISO 21457, Norsok M001, and DNV RP F112.

  • User-Friendly Experience: Designed for ease of use, AlloySelect provides immediate access to its features, with no complex setup or ongoing maintenance requirements.

Revolutionize Your Corrosion Management Strategy with AlloySelect

The transition from traditional tools like BP Cassandra to AlloySelect represents a significant leap forward in corrosion management technology. By offering enhanced precision, unparalleled accessibility, and adherence to global standards, AlloySelect stands as the premier choice for modern corrosion engineers.

Embrace the future of corrosion prediction with AlloySelect. Subscribe today and lead the way in asset integrity management.

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with alloyselect you can use data from reservoir and operation to check if carbon steel is suitable for your asset. alloyselect uses an Artificial Intelligence algorithm to determine sour service severity, corrosion rates and allowance, pH and other threats to the integrity of your asset.


alloyselect uses AI algorithms to identify suitable materials from a library of more than 300 different carbon and low alloy steels, cast irons and corrosion resistant alloys. alloyselect library of codes and standards is continuously updated to comply with regulatory requirements.


alloyselect helps you verify a selected material complies with one or more industry standards. AI algorithms analyse chemical, mechanical and processing data from Material Certificates to verify compliance with code and standards such as NACE MR0175, API 5CT and API6A

AI Technology

Artificial Intelligence technology implemented for materials selection decision making. alloyselect helps you evaluate, select and verify materials.


you can access alloyselect from any online device. Use mobile, tablet or desktop to calculate corrosion rates and select materials.

Continuously updated

alloy select is continuously updated to make sure all AI decisions are in accordance with the latest revisions of codes and standards.

Email and Print Reports

prepare reports to validate and document your materials selection. analize materials certificates and export your results.

Secured Data

we do not store your personal and project data . alloyselect AI algorithm is based on secure cloud technology protecting your valuable information.

Technical Support

we have a live webchat to support you and guide you through your materials selection. Our team of materials engineers is here to help you.


using AI, alloy select helps you select materials for production and injection wells, pipelines and processing facilities.


alloy select incorporates offshore standards like DNV RP F112, UK HSE guidelines to prevent chloride induced stress corrosion cracking.