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Record W2393687160

Present Studies and Problems of Immature Oils

2003· article· en· W2393687160 on OpenAlex
Maowen Li

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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueDizhi lunping · 2003
Typearticle
Languageen
FieldEngineering
TopicHydrocarbon exploration and reservoir analysis
Canadian institutionsGeological Survey of Canada
Fundersnot available
KeywordsStructural basinGeologyOil shaleSource rockBayBrackish waterGeochemistryPaleontologyOceanographySalinity
DOInot available

Abstract

fetched live from OpenAlex

Several genetic mechanisms of less mature oils have been proposed by previous researchers, and solvable organic matter generating hydrocarbons in early evolution stage has been suggested as one of the most important mechanisms for considerable immature reserves in rifted-basins such as the Jinhu depression, North Jiangsu-South Yellow Sea basin and Bamianhe oilfield, Bohai Bay basin of East China. However, our recent investigations show that some of the genetic models of less mature oils cannot be used to guide oil exploration. Oil-rock corrections have indicated that the so-called immature oils of the two basins are mainly derived from intervals located in normal oil-windows. There is hardly correlation between the alga-rich Es4 shale developed in brackish environments of the south slope of the Nuzhuang sag, Dongying depression and Bohai Bay basin and the crude oils in Bamianhe Oilfield in terms of the distribution patterns of steroids especially dinostanes. The results suggest that solvable organic matter in shale with buried depths less than 2700 m of the area, which was considered to be the main source rock of Bamianhe Oilfield in previous studies, is unlikely to be the essential source of the oils. Immature oils mostly coexist with adjacent favorable oil-kitchens in East China and the fact that the so-called immature oils of the typical immature oilfield i. e. the North Jiangsu-South Yellow Sea basin have features of mature oils infer that oil-mixing is a common phenomenon in some Tertiary rifted-basins of East China. Some methods of resource assessment may not be suitable for less mature oils if other genetic mechanisms rather than the traditional kerogen degradation account for immature oils. A new assessment method showes that the amount of immature resources in the area studied is not as large as previously calculated. Reinvestigation is necessary in basins bearing immature oils, adopting new analysis techniques such as biomarker quantification. It will be useful in determining the real maturity and the proportion of mixed oils with different sources.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.423
Threshold uncertainty score0.257

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.021
GPT teacher head0.250
Teacher spread0.230 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it