Early Concept Design Optimisation

Equus Gas Development Western Gas Project

Equus Gas Development is progressing concept select and refinement for Western Gas, focusing on optimising production profiles, field development options and cost efficiency using updated technical and commercial inputs. SEA Global is providing continued engineering and modelling support to Equus Gas Development through concept select refinement, updating key datasets, improving integrated production models, and refining cost estimates to optimise field development outcomes and support decision making.

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The scope covers more than 10 fields across multiple drill centres in 1200m water depth, featuring a 160km x 20-inch export line and 100km of infield production lines.

SEA Global is delivering ongoing engineering and data modeling support for the concept select refinement phase. This includes updating and executing Integrated Production Modelling (IPM) to assess well sequencing and water handling limits, re-evaluating system flow assurance using advanced tools on the ICE Platform, and optimizing field development strategies. The scope also encompasses systematically updating project engineering databases, providing cost estimating and commercial benchmarking for subsea configurations, and translating technical outputs into actionable commercial recommendations.

Water Depth
1200m water depth

Field Development Size
>10 fields across multiple drill centres

Export Pipeline Scale
160km x 20-inch export line

Infield Infrastructure Scale
100km x infield production lines

Scope of Work

Integrated Production Modelling (IPM) Update

Updated and reran IPM using latest field data, evaluating production rates, water handling constraints, and well sequencing options to optimise overall field.

Flow Assurance Reassessment

Re-evaluated flow assurance for selected development scenarios to ensure operability, identify constraints, and support reliable production across varying well and tie-back configurations.

Field Development Scenario Optimisation

Assessed multiple development options including production profiles, sequencing strategies, and interface constraints to refine and improve the overall concept selection basis.

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Subsea Cost Estimating and Benchmarking

Updated subsea cost estimates based on revised layouts, tie-back distances and well configurations, supporting improved economic evaluation and investment decisions.

Data Integration and Model Updating

Systematically incorporated updated input datasets into project databases and models, ensuring consistency, accuracy and traceability across engineering and commercial assessments.

Concept Refinement and Decision Support

Translated technical modelling outputs into clear recommendations, supporting optimisation of field development concepts and alignment between engineering outcomes and commercial objectives.

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