A Low Motion FPSO Design Hosting SCR and TTR in Harsh Environment
Bibliographic record
Abstract
Abstract In the development of remote offshore oil and gas fields with minimal or no infra-structure, the Floating Production Storage and Offloading (FPSO) unit is the preferred solution. The FPSO has the advantage of providing the required storage in the hull and direct offloading to tankers of opportunity. Steel Catenary Risers (SCRs) are the preferred solution in wet-tree applications due to their simplicity, robustness and low Capital cost (CAPEX) and Operational cost (OPEX) compared to other riser options. Also, Top Tensioned Risers (TTRs) have their well-known advantages in allowing direct vertical access to production wells and hence enhanced recovery. However, due to its relatively high dynamic motion, conventional FPSO is not a feasible host for TTRs or SCRs in most environments. In this paper, a Low Motion FPSO (LM-FPSO) design with the ability to host SCRs and TTRs is presented and evaluated for applications in deepwater field developments. A case study is prepared to compare the technical and commercial aspects of a field development in 250m water depth using a conventional FPSO to those using a wet-tree LM-FPSO supporting SCRs and a dry-tree LM-FPSO hosting TTRs. The constructability, transportability and installability of the new design along with its performance verification through physical scale model testing are discussed and presented in this paper.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".