Overview of engineering and operations activities conducted as part of the JOGMEC/NRCan/Aurora Mallik 2007-2008 Gas Hydrate Production Research Well Program, Part B: 2008 field program
Bibliographic record
Abstract
The Mallik 2007-2008 Gas Hydrate Production Research Well Program was conducted at the Mallik site in Canada's Mackenzie Delta, Northwest Territories over two successive winters. Year 1 (winter 2007) operations are described in another paper in this volume. In year 2 (winter 2008), the Mallik 2L-38 and Mallik 3L-38 wells were reopened following their suspension at the end of the previous year's field campaign. Mallik 2L-38 was subsequently recompleted for extended production testing, while Mallik 3L-38 was equipped as a produced-water disposal well. Operational activities during the winter 2008 campaign were conducted during a 77-day period from January 16 through April 3, 2008, and included ice-road and site construction, mobilization of camp facilities and service rig, well re-entry, well testing, well abandonment, and demobilization. The Mallik 2L-38 well was perforated (in 2007) over a 12 m interval from 1093 to 1105 m, just above the estimated base of gas hydrate stability at the Mallik site. Production testing was conducted in three stages, under three different bottom-hole pressure (BHP) targets. Continuous gas production from the Mallik gas hydrate reservoir was achieved during a 6-day period from March 10 to 16, 2008. At the conclusion of the campaign, all of the Mallik wells that had been drilled during the course of four gas hydrate research programs (in 1998, 2002, 2007, and 2008) were legally abandoned.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.017 | 0.007 |
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".