Implementing Chevron's i-field at the San Ardo, California, Asset
- James R. Ouimette (Chevron Energy Technology Co) | Kenan Oran (Chevron North America Exploration and Production)
- Document ID
- Society of Petroleum Engineers
- Intelligent Energy Conference and Exhibition, 11-13 April, Amsterdam, The Netherlands
- Publication Date
- Document Type
- Conference Paper
- 2006. Society of Petroleum Engineers
- 5.6.4 Drillstem/Well Testing, 7.3.3 Project Management, 5.4.6 Thermal Methods, 3.3 Well & Reservoir Surveillance and Monitoring, 4.1.5 Processing Equipment, 3.2.6 Produced Water Management, 7.1.5 Portfolio Analysis, Management and Optimization
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This is a case study of an integrated "digital oilfield?? project. The San Ardo, California, i-field Project is one of a number of current Chevron i-field implementation projects. It seeks to transform how the San Ardo steamflood is operated, focusing on better decision making for the asset and streamlined work processes for heat, wells, and water management. The San Ardo i-field project is nearing the end of the planning and front-end engineering phases, with project execution starting in 2006. The project team created preferred alternatives for transforming 21 work processes. Decision support software would be integrated with improved instrumentation, workflow automation, and data architecture to enable more reliable and efficient field operation and execution of reservoir management targets. The project is integrated in two ways. First, integration occurs across the asset management value chain from reservoir through production optimization to day-to-day steamflood and facilities decisions and work processes. Secondly, it is integrated across technology. For example, reservoir surveillance signposts are created and used with computer models to move day-to-day decisions along correct trajectories for executing reservoir heating and production management. A common collaboration and visualization environment would be used for executing day-to-day field decisions. The knowledge provided in the paper would be helpful for assets where field operators are managing many wells with limited resources and attempting to improve their operability and efficiency.
Introduction and description of San Ardo oil field
The San Ardo field, shown in Figure 1, is located in Monterey County, California. The field includes the Aurignac and Lombardi unconsolidated heavy oil (12.5 gravity) sandstone reservoirs.
The San Ardo Field was discovered in 1947 and to date Chevron has produced 257 MMBO of the field total 453 MMBO through primary, cyclic steam, and steamdrive operations. Chevron currently produces about 3,000 BOPD.
Chevron plans to increase San Ardo production through a major capital project approved in 2005 which would add additional wells and associated infrastructure. The development plan consists of dewatering/depressurizing the reservoir while simultaneously expanding the number of steamflood patterns. A commercial reverse osmosis plant would be constructed to process produced water.
The capital project would also be enhancing the data base infrastructure significantly. This creates a "greenfield?? opportunity for i-field to take a fresh view when designing workflows. The i-field implementation is being phased in as the San Ardo major capital project begins its construction.
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