{"id":"W2007877525","doi":"10.2118/108339-ms","title":"Underbalanced Perforation and Completion of a Long Horizontal Well: A Case History","year":2007,"lang":"en","type":"article","venue":"","topic":"Hydraulic Fracturing and Reservoir Analysis","field":"Engineering","cited_by":2,"is_retracted":false,"has_abstract":true,"ca_institutions":"Petro-Canada","funders":"","keywords":"Completion (oil and gas wells); Underbalanced drilling; Petroleum engineering; Geology; Drilling; Tripping; Perforation; Geotechnical engineering; Drilling fluid; Engineering; Circuit breaker; Electrical engineering; Mechanical engineering","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":[0.0005882818,0.003405623,0.001289199,0.003552479,0.003723938,0.002149398,0.002227035,0.007211495,0.00471471],"category_scores_gemma":[0.003730579,0.001593978,0.002192604,0.002761392,0.003008438,0.003198949,0.003012442,0.007040479,0.001299907],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002495113,"about_ca_system_score_gemma":0.001259204,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.004996196,"about_ca_topic_score_gemma":0.006398041,"domain_scores_codex":[0.9980867,0.00024463,0.0002171651,0.0004236175,0.000295133,0.000732707],"domain_scores_gemma":[0.997294,0.0005231766,0.0006558823,0.0002563991,0.0001494371,0.00112101],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"case_report","study_design_gemma":"case_report","study_design_scores_codex":[0.00001336689,0.0000359599,0.002953567,0.00002019942,0.000008280136,0.9951932,0.00020357,0.00006896012,0.0002029013,0.0002470636,0.0002483179,0.0008045546],"study_design_scores_gemma":[0.000003200902,0.0000395104,0.001307129,0.00003176315,0.000009767195,0.9972771,0.0003206891,0.0001730868,0.0001765987,0.0002122328,0.0004352245,0.0000137039],"study_design_candidate":"case_report","study_design_consensus":"case_report","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9384786,0.01027991,0.01151673,0.01152501,0.001275183,0.0003310808,0.0004630644,0.0003497548,0.02578063],"genre_scores_gemma":[0.9916885,0.001329076,0.00186307,0.00133506,0.0006542148,0.00003616487,0.0001219763,0.00005026341,0.002921593],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.007211495,"threshold_uncertainty_score":0.01810336,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008678431225432923,"score_gpt":0.2014734980494043,"score_spread":0.1927950668239714,"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."}}