The Subsea Wellhead Desander (B-FSM-181)
The subsea wellhead desander is surface technology applied subsea. It uses well-proven multiphase desander technology packaged for use in subsea applications.
Process:
- Gas-condensate or multiphase wells
- Up to 120 MMSCFD + 2000 BPD
- Operates at 25 psid with separation size (D98) = 12 micron
Vessels:
- FEA with DNV Certification
- API 6A/17D
- 5K or 10K, PSL 3, P+X, F22
System:
- Four tie-in points (TP)
- 8”inlet/outlet, 2” flush, 4” sand
- Bypass piping
- Automated operation
- Sand discharge or container
The Subsea Desander (SSD™) is being developed as a JIP.
Subsea Processing Requires Sand Management
- All wells produce sand
No New Equipment Required for Separation
- Proven equipment available topsides
- Packaging for deepwater use needed
Solids Handling Main Concern
- Covered later in presentation
Closing Technology Gaps
- Coordination between major stakeholders
- Cooperative development approach
- Qualified experienced innovative partners
- JIP Structure
- Four Phase program from Concept to Field Verification
- Develop and trial subsea multiphase desander
- Up to six members
References:
- Rawlins, C.H. and Ditria, J.C., 2019. “The Subsea Sand Management Challenge – What to do with the Sand?”. Offshore Technology Conference, Houston, TX, 6-9 May, OTC-29278-MS. https://doi.org/10.4043/29278-MS
- Rawlins, C.H. 2019. “Enhanced Production Through Surface Facilities Sand Management.” SPE Distinguished Lecturer presentation. Link here
- eprocess-training.com
Next week I will discuss the FSM training demo vidoes.
