{"id":"W2989797907","doi":"10.1190/int-2019-0061.1","title":"Diagenetic characteristics and quantitative evolution of porosity in tight gas sandstone reservoirs: A case study from the middle and lower Permian in the northwestern Ordos Basin, China","year":2019,"lang":"en","type":"article","venue":"Interpretation","topic":"Hydrocarbon exploration and reservoir analysis","field":"Engineering","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"Petro-Canada","funders":"Specialized Research Fund for the Doctoral Program of Higher Education of China","keywords":"Geology; Diagenesis; Authigenic; Cementation (geology); Petrography; Geochemistry; Calcite; Compaction; Volcanic rock; Carbonate; Mineralogy; Petrology; Volcano; Geomorphology; Cement","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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002547955,0.0002284378,0.0002179272,0.002136298,0.0005159097,0.0005092237,0.0003779121,0.0002868194,0.0002692352],"category_scores_gemma":[0.0003240074,0.0001906095,0.0003241987,0.001660909,0.0006044864,0.0003827589,0.0004484013,0.0001079447,0.00002518091],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001017265,"about_ca_system_score_gemma":0.0006039594,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.07275409,"about_ca_topic_score_gemma":0.1191653,"domain_scores_codex":[0.9998379,0.00001785809,0.00001969,0.00003926789,0.00003899114,0.00004627461],"domain_scores_gemma":[0.9997891,0.00004094916,0.00006942482,0.00001604195,0.00004656297,0.00003792173],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00003773236,0.00002577453,0.9899538,0.00001999827,0.00003461371,0.001340723,0.0007960412,0.0006403772,0.00358852,0.00006358285,0.00001879407,0.003480221],"study_design_scores_gemma":[0.000001983816,0.00002307934,0.9961498,0.000003721528,0.00001709604,0.0002751094,0.0007708016,0.00194257,0.0006765753,0.00003708046,0.00009630578,0.000005932121],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9998461,0.00002486932,0.00003543509,0.000002520484,1.360643e-7,0.000001613051,0.00002790078,0.000001250358,0.00006023356],"genre_scores_gemma":[0.9998569,0.00001992489,0.00004910804,8.630366e-7,4.041794e-7,8.965692e-7,0.00003222319,4.218823e-7,0.00003928272],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.07275409,"threshold_uncertainty_score":0.1446612,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01270151820139527,"score_gpt":0.2348110037531639,"score_spread":0.2221094855517686,"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."}}