{"id":"W3155813285","doi":"10.1190/int-2020-0185.1","title":"Pore structure and fractal characteristics of ultralow-permeability sandstone reservoirs in the Upper Triassic Yanchang Formation, Ordos Basin","year":2021,"lang":"en","type":"article","venue":"Interpretation","topic":"Hydrocarbon exploration and reservoir analysis","field":"Engineering","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"Petroleum Technology Research Centre; University of Regina","funders":"National Major Science and Technology Projects of China; National Natural Science Foundation of China","keywords":"Macropore; Geology; Porosity; Permeability (electromagnetism); Porosimetry; Characterisation of pore space in soil; Fractal; Mineralogy; Dissolution; Feldspar; Fractal dimension; Mesoporous material; Porous medium; Geotechnical engineering; Chemical engineering; Chemistry","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001856364,0.00009544695,0.0001842515,0.0001005222,0.00003022747,0.00004216151,0.0000794084,0.00007352496,0.00007607629],"category_scores_gemma":[0.0002003256,0.00007316012,0.00005410815,0.0003179824,0.0000315659,0.0003183452,0.000008369897,0.0001548035,0.000001426009],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0000366272,"about_ca_system_score_gemma":0.00001616925,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00001164956,"about_ca_topic_score_gemma":0.0001494673,"domain_scores_codex":[0.9991477,0.0001159295,0.0003575974,0.0001103269,0.0001686078,0.00009988229],"domain_scores_gemma":[0.9995497,0.00009191672,0.00006096334,0.0001796607,0.00009221948,0.00002550103],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0006236769,0.0003804871,0.198986,0.002614499,0.000627169,0.0001224021,0.2187907,0.08875791,0.4126012,0.0008689021,0.001496891,0.07413016],"study_design_scores_gemma":[0.0007202583,0.00003658814,0.1513406,0.0001504621,0.00006859564,0.00002239144,0.004651398,0.8100622,0.0313154,0.001129676,0.0002691055,0.0002332673],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9872654,0.0001317924,0.01165355,0.0004407747,0.00009242456,0.0001102636,0.00003605423,0.00002456644,0.0002451626],"genre_scores_gemma":[0.99941,0.00006825715,0.0001639354,0.00008670037,0.00003084786,0.00001133197,0.0002073935,0.000009300525,0.00001227142],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.7213043,"threshold_uncertainty_score":0.2983383,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007745098056808031,"score_gpt":0.2282665586158224,"score_spread":0.2205214605590144,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}