Сharacteristics of the Bazhenov Horizon from Peripheral Area Based on Geochemical Study of the Organic Matter
Bibliographic record
Abstract
Summary This research is devoted to the study of organic matter (OM) from Bazhenov and Abalak sections of the well located in peripheral part of West Siberia. For the comprehensive characterization, we performed Rock-Eval pyrolysis of rocks, GC-MS analyses of bitumen and isotope ratio measurements for gases, bitumen and cores. The Abalak section cores contain less OM of poorer quality (type III or II-III kerogen). According to the obtained results, the Bazhenov section could be divided into lower and middle parts. A lower part of the Bazhenov section consists of altering layers with 0.5–1.6 m thickness differing in OM quality and quantity. Cores from layers enriched with OM are similar to the cores from the central region of West Siberian petroleum basin (the Bazhenov Formation). Layers with the lack of OM are presented in the Bazhenov Formation of investigated section. Such layers are potential reservoirs with relatively high production indexes. Most probably, the differences in quality of OM are caused by sedimentation conditions, that was confirmed by sulfur isotope ratio studies.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 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".