{"id":"W2785422693","doi":"10.1051/matecconf/201814816002","title":"Stick-slip and Torsional Friction Factors in Inclined Wellbores","year":2018,"lang":"en","type":"article","venue":"MATEC Web of Conferences","topic":"Drilling and Well Engineering","field":"Engineering","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Calgary","funders":"Norges Forskningsråd; University of Calgary; ConocoPhillips","keywords":"Drill string; Borehole; Slip (aerodynamics); Mechanics; Stiction; Drill pipe; Coulomb friction; Amplitude; String (physics); Static friction; Drill; Geotechnical engineering; Geology; Physics; Engineering; Materials science; Optics; Microelectromechanical systems; Mechanical engineering","routes":{"ca_aff":true,"ca_fund":true,"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":[0.00007205339,0.0000880837,0.0001278147,0.0001181559,0.00001950633,0.00001681633,0.00006084712,0.00005351438,0.0001030701],"category_scores_gemma":[0.0000185888,0.00007693833,0.00001291364,0.00009081713,0.00004933745,0.00005984143,0.00001558779,0.0000599338,0.000005748134],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000008901739,"about_ca_system_score_gemma":0.00002775129,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0001330543,"about_ca_topic_score_gemma":0.00008107559,"domain_scores_codex":[0.9995611,0.000006404545,0.0001537405,0.00008179366,0.00008372125,0.0001132508],"domain_scores_gemma":[0.9998187,0.00004844768,0.00001715922,0.00005830506,0.00002571109,0.00003170713],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00008402154,0.0001325628,0.7136427,0.0009457854,0.0001951291,0.000009243865,0.00409103,0.07682722,0.1420256,0.03379189,0.001715421,0.02653946],"study_design_scores_gemma":[0.0005305532,0.0001650451,0.3401755,0.0002903237,0.0000139887,0.000002110236,0.0005007036,0.5253275,0.1176714,0.001795271,0.01311547,0.0004121297],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9907014,0.0001155772,0.001977796,0.00001188908,0.0003653178,0.00003564942,0.000005712183,0.0001093728,0.006677235],"genre_scores_gemma":[0.9996055,0.00009481844,0.0001953727,0.000002068944,0.00006182268,0.00000193256,0.000004059032,0.000008171195,0.00002623757],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.4485003,"threshold_uncertainty_score":0.3137454,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01069504640424731,"score_gpt":0.207666315405115,"score_spread":0.1969712690008677,"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."}}