The DSA Roadmap initiative adapted a well-known Purdue reference model for computer integrated manufacturing (Williams 1989) subsequently adopted into the ISA standard reference model (ISA 95) describing connectivity of information, process, and technologies necessary to implement the hierarchical control. This permits end users, integrators, and vendors to share in the integration of applications.
The adapted reference model is used by the DSA-R to create the decision-making and control framework. This framework, subject to further updates as the roadmap process evolves, also provides a map for the relationship of various interrelated systems in the application of DSA. The five levels for well construction identified on the left-hand side of the graphic and listed below correspond to the five layers defined in the reference model:
- Level 4 – Enterprise management. Managing business-related activities of the drilling operation (business planning and logistics).
- Level 3 – Operations management. Managing workflows to drill, protect the hole, and complete the well.
- Level 2 – Execution management. Supervising, monitoring, and controlling the physical processes with real-time controls and software
- Level 1 – Machine control. Sensing and manipulating the physical processes.
- Level 0 – Physical processes. Defining actual physical processes of the drilling and completion operation (Well construction).
Williams, T.J. 1989. A Reference Model for Computer Integrated Manufacturing (CIM), ISBN 1-55617-225-7.
ISA 95 2010. Enterprise-Control System Integration. ANSI/ISA-95.00.01-2010 (IEC 62264-1 Mod).