The complete paper describes a work flow in which wells and production networks (15 platforms and 100 active wells located in the Cheleken Block offshore Turkmenistan) are automatically modeled daily with steady-state and transient tools and ultimately analyzed by a Web-based surveillance system, the Cheleken Block Central Data Gathering System (CDGS). These models are updated and run automatically on a daily basis by means of the CDGS.
Introduction
Well and network modeling are being used widely across the industry as a method of problem detection, production enhancement, and production optimization. However, well and network modeling require a large amount of data that needs to be systematically collected, cleaned, validated, and updated. They also require considerable manpower, because many time models are not calibrated adequately to ensure reliable results.
An operator has implemented a robust system, the CDGS, that allows data capture, validation, and approval in a systemic manner. There was a need to capitalize on this ability and integrate it with steady-state and transient models to increase the efficiency of the overall process.
Philosophy Applied
The initial status of the project presented several critical challenges:
- Well models were executing sporadically.
- The network model did not consider the frequent well and network flow routing.
- Optimization of choke or flow routing was not possible with the current configuration.
- Visualization of day-to-day flow routing and other production key performance indicators of the field in a centralized system was required in order for the operators, supervisors, and reservoir teams to reduce their nonproductive time, solve day-to-day operational problems, and optimize field production.
The project was designed and implemented on the basis of four fundamental processes.
- A production-data-management system (PDMS) was implemented to systematically acquire all well-operation data and process information generated during day-to-day activity from producing assets.
