{"id":"W4297405170","doi":"10.2118/210551-ms","title":"A Review of Conventionally Undrillable Wells with Ultra-Narrow Pressure Windows Successfully Drilled Utilizing MPD Over the Last Five Years in USA and Canada","year":2022,"lang":"en","type":"review","venue":"","topic":"Drilling and Well Engineering","field":"Engineering","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Casing; Drilling; Petroleum engineering; Wellbore; Drill; Drill pipe; Geology; High pressure; Hydraulic pressure; Engineering; Geotechnical engineering; Mining engineering; Mechanical engineering; Engineering physics","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":[0.003627043,0.0009432942,0.001099883,0.01677185,0.001524941,0.002910131,0.002908055,0.001012407,0.002274233],"category_scores_gemma":[0.008362474,0.0008029481,0.0009535204,0.0293285,0.002181191,0.001661536,0.001057863,0.0008227191,0.0004934726],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.01321138,"about_ca_system_score_gemma":0.04206993,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.6086583,"about_ca_topic_score_gemma":0.7872334,"domain_scores_codex":[0.9965473,0.0002291131,0.00077272,0.0004710488,0.001682582,0.0002972403],"domain_scores_gemma":[0.9842354,0.003097093,0.002493035,0.0002935882,0.009164707,0.0007161106],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"not_applicable","study_design_scores_codex":[0.0002099523,0.00008703687,0.02420165,0.04721781,0.000437332,0.001859228,0.002210777,0.001499072,0.003167877,0.001953492,0.02145316,0.8957026],"study_design_scores_gemma":[0.00001490312,0.0002748439,0.1095252,0.02896706,0.0008978762,0.005689454,0.003909148,0.0004418381,0.004038401,0.000310689,0.8457443,0.0001863893],"study_design_candidate":"not_applicable","study_design_consensus":null,"genre_codex":"review","genre_gemma":"review","genre_scores_codex":[0.00803821,0.985036,0.000750791,0.000582236,0.0002489837,0.00004316118,0.0008501717,0.00003489856,0.004415444],"genre_scores_gemma":[0.024995,0.9721571,0.001203917,0.0002579562,0.00007918601,0.00001472476,0.0005984243,0.00001958614,0.0006741018],"genre_candidate":"review","genre_consensus":"review","teacher_disagreement_score":0.3913417,"threshold_uncertainty_score":0.7872927,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01094548415022475,"score_gpt":0.2205441026146445,"score_spread":0.2095986184644197,"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."}}