Hibernia Record Well Breaks Extended Reach Drilling and Completion Envelope
Why this work is in the frame
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Bibliographic record
Abstract
Abstract In 2002 the Hibernia Management and Development Company (HMDC), led by ExxonMobil Canada, embarked upon the development of the northern most compartment of the Hibernia development project, (‘A’ Block). To access these reserves, it was proposed to drill and complete a 31,000 ft measured depth (MD) oil producer with a horizontal departure and vertical depth that would exceed the present day industry extended reach drilling (ERD) envelope. Successfully drilling this world-class well would require the application and extension of currently available drilling and completion technology. Meeting the project goals would demand the installation of a large monobore completion system with offshore-Canada's deepest downhole telemetry system. The proposed trajectory would require management of weak and unstable intervals across an extended 17,000 ft MD intermediate section. This trajectory would necessitate the installation of record length production casing strings under high friction load. Subsurface tool reliability under extreme cyclic loading would be needed, especially at the lower wellbore sections where downhole tool failures would be costly due to depth and trip time. The project would require the development of effective strategies to mitigate very high circulating pressures and fluid rheology at extended distances. Drill pipe and tool joints would require upgrade to meet the higher anticipated loads for this program. Completion equipment would also require significant enhancements to meet the pressure and axial load requirements of the wellbore. Planned intervention tools would require modification to allow passage through the extended reach sail angle. Wellbore tractors would be refitted and shop testing would be conducted to ensure all tools were ready for application. To meet these challenges HMDC would leverage existing local experiences1 while at the same time engage recognized international expertise to supplement existing practices. Technical work sessions were conducted during the planning phase to start the communication process to all stakeholders (including service providers) and to identify critical technical boundaries and key technologies to extend the current ERD envelope. The comprehensive review and upgrade of Hibernia ERD practices was effected through external engagement of ERD experts for worldwide lessons learned. Internal resources were accessed to effectively integrate the latest concepts in hole cleaning and wellbore stability. All the while, operational and design revisions were based upon, and complemented by, successful existing Hibernia ERD practices.
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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 | 0.000 |
| 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 it