Claim

In a 12-cored-well case study from the Chang 8 Member of China's Jiyuan Oilfield, an SE-ResNet18 well-log model achieved R² 0.86 and RMSE 0.287 mD for tight-sandstone permeability regression.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 17502 · qualifiers {"model":"SE-ResNet18 with one-dimensional convolution and residual learning","sample":"12 cored wells","location":"western Ordos Basin, China","material":"Chang 8 Member tight sandstone","source_edition":"94d38610-5a0c-8c12-94d8-4d35234b513e"}

29 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 112 times: checked 2, looked up by assistants 0, viewed 70, shared 40. A count of attention, not evidence.

Topics

Technology · 1efd24fe Earth science · 1efd24fe

Assessment

Supported

Score: 0.8581 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 1 counted · 2 by the author only

1 independent evidence lineage · review checks 1 of 4 · stability MEDIUM

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:b95e230c-8dfc-83c2-86af-8cca5a094627

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from matilda.science was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The indexed Matilda record reproduces the 12-well case study and reported SE-ResNet18 performance. weight 1.800000 evidence

Suppressed as dependent: The indexed Matilda record reproduces the 12-well case study and the reported SE-ResNet18 R-squared and RMSE.; The passage directly reports the 12-well case study, model, R-squared, and RMSE values.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Hide calculation

0.8581 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability MEDIUM · 4 sources, 1 independent lineage

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:883edafeb825c2b854ae898f556824f34db3a5eea70e9e1170a657108000b3bc

Last changed at entry seq 17541; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
24baef67 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
12701dc0 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
f2633a07 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept 12701dc0)
073cfe40 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept 24baef67)

prior 0.50 → log-odds 0.000000 + 1.800000 (the counted weights) = 1.800000 → probability 0.8581

Under neighbouring settings of the same model: 0.7790 to 0.9121, a spread of 0.1331.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“In a 12-cored-well case study from the Chang 8 Member of China's Jiyuan Oilfield, an SE-ResNet18 well-log model achieved R² 0.86 and RMSE 0.287 mD for...” · 1 claim · 29 September 2026
“A geological-prior-guided attention network improved tight-sandstone permeability prediction and reservoir-type classification in a 12-well case study in...” · 2 claims · 29 September 2026

Evidence for

The study reports a 12-well Ordos Basin case study and the SE-ResNet18 regression performance.

From An integrated method for permeability prediction and fluid identification in tight sandstone reservoirs using geological-prior-guided attention networks: a case study of the X Block, Chang 8 member, Jiyuan oilfield Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The passage directly reports the 12-well case study, model, R-squared, and RMSE values.

From An integrated method for permeability prediction and fluid identification in tight sandstone reservoirs using geological-prior-guided attention networks: a case study of the X Block, Chang 8 member, Jiyuan oilfield Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The indexed Matilda record reproduces the 12-well case study and the reported SE-ResNet18 R-squared and RMSE.

From An integrated method for permeability prediction and fluid identification in tight sandstone reservoirs using geological-prior-guided attention networks Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The indexed Matilda record reproduces the 12-well case study and reported SE-ResNet18 performance.

From An integrated method for permeability prediction and fluid identification in tight sandstone reservoirs using geological-prior-guided attention networks Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Independent indexed record corroborates the primary article.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
82a394a4		12701dc0
71ccf4ac		24baef67

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	24baef67, 073cfe40

Summary

Supported. The main support is: The indexed Matilda record reproduces the 12-well case study and reported SE-ResNet18 performance. a1065cea

2 further items repeat the same origin and are not independent evidence. 82a394a471ccf4ac

A search for evidence in the opposing direction found something; see the counted evidence. d66d335e

Review checks: 1 of 4. coverage:b95e230c-8dfc-83c2-86af-8cca5a094627

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
17502	APPENDED
17503	ACCEPT	AUTOMATIC_AFTER_VALIDATION
17514	LINK_EVIDENCE	by 1efd24fe (accepted)
17521	TASK_RESULT	by 1efd24fe (accepted)
17532	TASK_RESULT	by 1efd24fe (accepted)
17540	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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