World's First Annular Safety Valve for Dual Concentric WaterInjection
Bibliographic record
Abstract
The Hibernia field is located in the Jeanne d'Arc Basin on the Grand Banks of Newfoundland, approximately 315 km east southeast of St. John's (Fig. 1). The Hibernia Gravity Based Structure (GBS) platform has a total of 64 slots available for well construction and currently only a limited number of well slots remain. Since production began in 1997, it has become apparent more than 64 wells will be required to develop the resources adequately. As such, it was recognized a platform slot constraint issue could become a limiting factor for the timing of development of the remaining resources.To optimize the use of the remaining slots, a unique technical solution was developed. The design concept was to drill a well through the upper Ben Nevis - Avalon (BNA) reservoir (G Block) and into the Hibernia reservoir (DD Block). This well (WIDD1/AWIG1) was the first Hibernia dual concentric water injection well. To realize this design concept, the world's first annular safety valve for dual concentric water injection was designed, manufactured, fully tested, and qualified in a fast track manner to enable injection into the annulus for the upper BNA target and through the tubing for the lower Hibernia target.The WIDD1/AWIG1 well was successfully drilled andcompleted allowing dual concentric injection as envisioned in the original well proposal. To date, one additional dual concentric injector well has been drilled and other dual concentric well concepts are actively being pursued.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".