{"id":"W2002766377","doi":"10.2118/70133-pa","title":"Multiple Proppant Fracturing of Horizontal Wellbores in a Chalk Formation: Evolving the Process in the Valhall Field","year":2001,"lang":"en","type":"article","venue":"SPE Drilling & Completion","topic":"Hydraulic Fracturing and Reservoir Analysis","field":"Engineering","cited_by":8,"is_retracted":false,"has_abstract":true,"ca_institutions":"Schlumberger (Canada)","funders":"","keywords":"Petroleum engineering; Coiled tubing; Directional drilling; Completion (oil and gas wells); Drilling; Logging while drilling; Productivity; Well stimulation; Wellbore; Oil field; Reservoir engineering; Geology; Engineering; Petroleum; 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":[0.0006459592,0.0001963222,0.0002873465,0.0007814826,0.000918688,0.001058488,0.0003761745,0.0003439949,0.0008457313],"category_scores_gemma":[0.0005744269,0.0001531581,0.0001718771,0.0003876555,0.0006820101,0.0003516008,0.0004555112,0.000327598,0.0001669066],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009248807,"about_ca_system_score_gemma":0.001066312,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01113979,"about_ca_topic_score_gemma":0.04086418,"domain_scores_codex":[0.9997007,0.00003056169,0.00001418557,0.00006392239,0.0001099901,0.00008069489],"domain_scores_gemma":[0.9996156,0.0001045731,0.00004488636,0.00003794745,0.0001164417,0.00008051108],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.001613352,0.0004771319,0.09317573,0.0004188572,0.0000432004,0.006909062,0.005645461,0.03098748,0.5640207,0.001726878,0.001175049,0.2938071],"study_design_scores_gemma":[0.00009716039,0.005544691,0.3246199,0.0001314172,0.00007290413,0.002324465,0.01625573,0.0333521,0.5924069,0.001836574,0.02319414,0.0001641553],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9971986,0.00006281326,0.001147395,0.00003219737,0.000004204929,0.00002496765,0.00003479487,0.00002753451,0.001467526],"genre_scores_gemma":[0.9940157,0.00006490514,0.003999952,0.00001320823,0.000001881848,0.00001075157,0.00005026225,0.00001076901,0.001832521],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01113979,"threshold_uncertainty_score":0.02214986,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01269110125227448,"score_gpt":0.2318208308755685,"score_spread":0.219129729623294,"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."}}