Field/Well Integrity Issues, Well Abandonment Planning and Workover Operations on an Inadequately Abandoned Well: Peace River Alberta Case Study
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Maintaining well integrity for field lifecycle operations is a major factor that must be taken into account in the planning and execution of all Well Engineering activities. Some legacy wells are not properly abandoned to prevent the contamination of secondary reservoirs and/or groundwater from other producing hydrocarbons, or from emerging carbon capture and acid gas storage projects being planned by both oil and gas operators and government research groups. If these wells are not identified and properly abandoned, there is a high risk of negative impact to the environment, operator reputation, and the economics of field operations. This case study will examine the complex re-entry and re-abandonment of a well in the Peace River Alberta region of Alberta, Canada. In the process of developing the plan to re-enter and abandon this well, a methadology for abandonment planning was adopted with three essential attributes: the abandonment should provide effective isolation of all critical zones, operations should allow for evaluation and confirmation of zonal isolation, and the final condition of the well should allow for a simple re-entry to remediate future isolation problems. Throughout the planning and execution of the program, the regulating agency was integrated into the decision-making process. To complete the abandonment, technologies such as casing drilling, downhole cameras, and magnetic ranging were employed along with directional drilling, coiled tubing, and fishing operations. Upon completion, the effectively executed abandonment program met or exceeded prescribed technical and regulatory requirements. The positive results of performing this operation included mitigating environmental impacts, delaying the capital-intensive construction of a future sour gas treatment plant, and allowing the extended operation of the Peace River Complex.
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 it