Maximus 7.7 - Equation-oriented Multiphase and Life of Field Flow Simulator

Released: September 2026.
Maintained until September 2029

Important note, before you upgrade

Maximus 7.7 requires Sentinel RMS 10.1. You can upgrade to the new version of the Network License Server directly from the Maximus 7.7 install shield, selecting "Network License Server" or download it directly from the KBC Downloads site

What's new in Maximus 7.7

With Maximus 7.7, we continue the transition of Maximus from a primarily engineering and field-planning tool into a production modelling platform that can support operational workflows, production optimization, and asset-level decision-making.

The focus of this release is to make trusted engineering models easier to use in operational contexts. Maximus 7.7 improves the way users bring existing well and network models into Maximus, calibrate models against field data, represent artificial-lift systems, and model production-system behaviour across the life of the field.

This release is not a single-feature update. It is a practical step toward operational asset modelling: connecting existing models, keeping them calibrated, improving full-field representation, and reducing the manual effort required to reuse engineering models in day-to-day production decisions.

Key themes in Maximus 7.7 include:

• Model continuity — reuse existing engineering and well models with less rework.
• Field calibration — keep wells and network models aligned with measured field behaviour.
• Full-field operational modelling — represent wells, networks, facilities, and operating constraints as part of the production system.
• Operational confidence — use trusted models to support production decisions while reducing production, operability, and integrity risk.

List of changes in Maximus 7.7

New or improved functionalities

• Maximus hydraulic network capabilities enhanced to interface with exported, well-test-tuned Prosper™ models for both naturally flowing and artificially lifted wells.
• New Python-based converter available to transform Prosper™/GAP™ models into Maximus models.
• ESP modelling capability added, including support for importing vendor-supplied ESP data.
• ESP database/catalogue capability added.
• Updated storage tank functionality with support for modelling gas, liquid, or multiphase fluids.
• Improved storage tank behaviour for Life-of-Field modelling, including multiphase accumulation in facilities.
• Well model calibration to well-test data added, enabling users to tune well models against measured field behaviour.
• Single pipe, tubing, riser, and completion tuning can now be performed inside the relevant object rather than only through the Tuning Tool object.
• Added new LSQE optimisation method to the Tuning Tool.
• Added support for sensitivity analysis using different flow correlations.
• Added a new Boundary Conditions dialog that consolidates key information used to solve the simulation.
• Maximus – 6X integration (by Ridgeway Kite) workflow improved, supporting coupled reservoir-to-surface modelling beyond proof-of-concept workflows.
• TPD file reading improved, allowing Maximus to handle more input formats.
• Eclipse file reading improved, allowing Maximus to handle more input formats.
• Hydrate inhibitor model variables now work with all inhibitor types.
• Replaced legacy spreadsheet software with an improved version.
• Updated Steema TeeChart plotting component.
• Unit names can now be hidden on the GIS map.
• Older versions of OLGA-S are no longer provided. The ability to utilize the latest versions of SLB's OLGA-S is available when purchased directly from SLB. Users need to purchase OLGA-S directly from SLB and require an AOL 3-J1 OLGA-S type license.
• Updated Multiflash 7.6 integration as part of the Maximus 7.7 release cycle.

Interfacing, usability, and performance

• Enhanced data import and model-ingestion workflows, including Prosper™/GAP™ ingestion and extended file-reading support.
• Improved modelling, tuning, and analysis workflows, including in-object tuning and flow-correlation sensitivity analysis.
• Consolidation and refinement of existing functionality, including the Boundary Conditions dialog and hydrate-inhibitor behaviour.
• Usability, performance, and user-experience improvements across plotting, GIS display, storage tank modelling, and workflow automation.
• Improved foundations for cloud, API, and digital-twin workflows by making models easier to connect, calibrate, and reuse.

Key benefits

Reuse existing models with less rework

Many operators already maintain well and network models in established workflows. Maximus 7.7 helps bring those models into Maximus more directly, reducing duplicate model-building effort and making it easier to extend existing engineering work into field-wide production modelling.

Keep models aligned with field behaviour

The new well-test matching and tuning workflows help users calibrate model parameters against measured data. This supports more reliable use of models for production monitoring, planning, and operational decision-making.

Model artificial-lift systems more effectively

ESP modelling expands Maximus’ ability to represent artificially lifted wells. Users can model ESP performance, import vendor performance data, and evaluate how ESP operation affects production behaviour across the network.

Improve Life-of-Field and operational studies

Enhancements to storage tank modelling, multiphase accumulation, and reservoir-to-surface workflows strengthen Maximus’ ability to support Life-of-Field studies and operational planning from reservoir to export.

Support operational decision-making

Maximus 7.7 helps close the gap between engineering models and operational workflows. It enables production and flow-assurance engineers to use trusted models more routinely when assessing operating constraints, evaluating production options, and managing production, operability, and integrity risks.

Typical application areas enhanced in Maximus 7.7

• Integrated Asset Modelling and Integrated Production Modelling.
• Full O&G field modelling from reservoir to export.
• Well and network calibration using field data.
• ESP-lifted well modelling and production assessment.
• Production monitoring, surveillance, and optimization.
• Operational planning and what-if analysis.
• Flow assurance and production chemistry risk assessment.
• Life-of-Field support for brownfield and greenfield assets.
• CCS-related storage tank and loading/offloading scenarios.
• Coupled reservoir-to-surface workflows using 6X integration.

Known issues and limitations

List of known issues that may be relevant to the users: