You were hired as a completion engineer in a deepwater...
You were hired as a completion engineer in a deepwater development project where the production and water injection wells will be connected to an FPSO.
The FPSO project is also in an early stage and will be adapted depending on the wells conceptual project requirements.
A few wells were drilled in this field and several information from the rocks and fluids were collected, including several cores. A DST in a vertical well was also performed.
The wells will be drilled in a WD of 1,850 m. The FPSO will be moored at 1,000 m WD and will be positioned circa 15 km from the wells.
Reservoir Information:
- Partially consolidated sandstone.
- Uniform thickness in all reservoir: 250 m.
- Homogenous rock properties throughout the reservoir.
- Permeability estimated between 500mD and 1,000 mD.
- Good vertical permeability.
- Porosity: 26%.
- Vertical depth: 3,400 m.
- Static Pressure: 390.0 kgf/cm2.
- Temperature: 75oC.
- Production Mechanism: water influx.
- Fluids carachteristics:
- API (60oF): 32
- GOR: 80 m3/m3
- High H2S and CO2 contents.
- Viscosity at reservoir conditions: 5 − 8cp
- Initial BSW = 0. An increase of the BSW is expected after 18 months of production.
Focusing only on oil producers. Can you prepare a completion conceptual project, considering the questions below.
Please describe the reasons of your choice(s).
1.What information would you need from other teams or studies that you would require that would be necessary for your project. Please briefly justify.
2.What is the recommended completion for the interface well x reservoir? Please briefly justify.
3.What is the recommended lifting method to be used and why?
4.What are the considerations about the metallurgy, diameters and accessories) for the production string?
5.Draw a simple schematics of your completion conceptual project.
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