Three Ways C-FER is Helping to Advance EGS
C-FER has a long history in helping the thermal oil and gas with qualifying and implementing technologies that can improve the efficiency, reliability and safety of circulating liquids and steam, at depth, through rock for the SAGD process. These same services are now being used to adapt oilfield technologies to support the geothermal industry.
C-FER can help geothermal operators, industry and government organizations, and technology developers to support EGS developments by:
There are several key parameters that effect the technical and economic potential of an EGS development, including the geothermal gradient, rock properties, fracture spacing, drilling and completion costs, natural gas price, and carbon levy projections.
C-FER has experience in providing full techno-economic feasibility assessment for your application. We can work with your economic assessment tools or create a custom analysis tool to analyze the cost and well production sensitivities to depth, flow rate, completion size, and thermal gradient.
We can also provide a cost/benefit analysis of implementing newer technologies for EGS developments such as different forms of Artificial Lift (e.g. Electric Submersible Pumps) and advanced wellbore technologies such as isolation and flow control devices.
Where applicable, we expand our team to include expertise from Universities and geothermal developers to analyze fracture mechanics, reservoir strategies, and development costs.
Structural and Thermo-Hydraulic Well Analysis
C-FER performs detailed computational fluid mechanics (CFD) and finite element analysis (FEA) on thermal and geothermal wells.
CFD is used to perform complex flow and heat transfer analysis including phase-change behavior. This is important for advanced well completions for EGS applications, including:
- Determining where to place ICDs and/or OCDs in your system
- Determining heat transfer interaction between the hot rock and wellbores along the full length of the wells from reservoir to surface
- Analyzing artificial lift challenges due to well deviation and multiphase fluid behavior
FEA is used to perform detailed analysis of EGS wells to ensure long-term reliability of completions and well technologies, including:
- High temperature premium and semi-premium casing connection design
- Structural design and analysis of high temperature well technologies such as packers
C-FER has also developed software to visualize and assess EGS well condition and integrity. The Well Xplore™ software is used to convert multi-finger caliper data into a 3D visualization of the wellbore.
As the utilization of advanced well technologies for EGS advances, technologies from other thermal industries will need to be qualified and developed further for the specific EGS requirements. For example, thermal oil technologies will need to be developed for higher flow rates and more severe corrosion conditions.
C-FER performs testing services to adapt these technologies for EGS, including full-scale testing of: