Industry Trends Utilizing Larger Diameter Coiled Tubing for Extended Reach Operations in Northwestern Canada
Bibliographic record
Abstract
Abstract Coiled tubing (CT) operations in Canada have evolved significantly due to advancements in horizontal, multi-stage fracturing. This evolution has caused a shift from using smaller diameter tubing (31.75 mm to 50.8 mm) less than 3,000 m in length to using larger diameter tubing (60.3 mm to 73.0 mm) with lengths over 6,000 m. The preference for larger diameter CT is a result of operators drilling longer lateral lengths to stimulate as many zones as economically possible. To illustrate recent trends in Canadian CT operations, statistics from the past 10 years of horizontal drilling are briefly analyzed followed by an examination of operational data from a leading CT service provider. The surface equipment and CT string design required to perform these operations is also reviewed. Three recent case studies of CT milling operations in Northwestern Canada are discussed to highlight the importance of purpose-built equipment and accurate string selection in today's horizontal market. The industry trend to larger CT is significant because CT capability has become a key component in the overall feasibility and economic evaluation of extended reach, multi-stage horizontal wells.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".