{"id":"W2483902342","doi":"10.2118/00-10-05","title":"Application of Multiphase Flow Methods to Horizontal Underbalanced Drilling","year":2000,"lang":"en","type":"article","venue":"Journal of Canadian Petroleum Technology","topic":"Drilling and Well Engineering","field":"Engineering","cited_by":17,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Underbalanced drilling; Petroleum engineering; Drilling; Drilling fluid; Directional drilling; Multiphase flow; Lost circulation; Coiled tubing; Tripping; Completion (oil and gas wells); Well drilling; Geology; Engineering; Mechanical engineering; Mechanics","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0006359533,0.0004799297,0.0003206206,0.0009128142,0.0002610853,0.0006554942,0.0005078989,0.0003610271,0.001295987],"category_scores_gemma":[0.001242678,0.0002751791,0.0003013923,0.0004748774,0.0003373893,0.000832993,0.0006120221,0.0004180707,0.0001698418],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0005710424,"about_ca_system_score_gemma":0.0005694716,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00252338,"about_ca_topic_score_gemma":0.002584704,"domain_scores_codex":[0.9996166,0.0001036315,0.00002721237,0.00004714515,0.0001799994,0.00002539589],"domain_scores_gemma":[0.9989883,0.0005421006,0.0001979504,0.00008071573,0.0001681704,0.00002273888],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0001512951,0.0001252732,0.007564703,0.0002447804,0.00002358031,0.0001277844,0.000173253,0.6719527,0.04719962,0.006212403,0.0004279055,0.2657967],"study_design_scores_gemma":[0.00000772201,0.00006717888,0.0007622244,0.00001097718,0.000003066832,0.00002807888,0.00001980556,0.9859198,0.01131244,0.001025321,0.000833861,0.000009547358],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"methods","genre_scores_codex":[0.1025873,0.0001996417,0.8945014,0.00007736812,0.00002455182,0.00008091942,0.000059208,0.0004508651,0.002018797],"genre_scores_gemma":[0.7337194,0.0001441934,0.2649751,0.00002191861,0.00001166665,0.0000766189,0.00006356827,0.00004657097,0.0009409478],"genre_candidate":"methods","genre_consensus":"methods","teacher_disagreement_score":0.00252338,"threshold_uncertainty_score":0.00501734,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.004320844780433094,"score_gpt":0.224454442932995,"score_spread":0.2201335981525619,"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."}}