{"id":"W4256411085","doi":"10.2523/103041-ms","title":"A New Approach to Matrix Sandstone Acidizing Using a Single Step HF System:A Niger Delta Case Study","year":2006,"lang":"en","type":"article","venue":"Proceedings of SPE Annual Technical Conference and Exhibition","topic":"Reservoir Engineering and Simulation Methods","field":"Engineering","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"Petro-Canada","funders":"","keywords":"Petroleum engineering; Matrix (chemical analysis); Niger delta; Wellbore; Process (computing); Productivity; Environmental science; Process engineering; Computer science; Geology; Engineering; Materials science; Delta","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":[0.0004065657,0.0003185858,0.0002872098,0.0004834878,0.0008202782,0.000943243,0.0005294293,0.0008500217,0.001427836],"category_scores_gemma":[0.0003220663,0.0001317052,0.0002929664,0.0004289443,0.0003407325,0.0003861413,0.0005235017,0.0003332619,0.0002524482],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008886377,"about_ca_system_score_gemma":0.0008446714,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.009138374,"about_ca_topic_score_gemma":0.02385888,"domain_scores_codex":[0.9997099,0.00006264263,0.00001772104,0.00004285795,0.000112584,0.00005419385],"domain_scores_gemma":[0.9998259,0.00005173017,0.00001805956,0.00001877116,0.00005364875,0.00003184761],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"case_report","study_design_scores_codex":[0.001088935,0.001844686,0.05049168,0.001828337,0.0001238187,0.0278857,0.002379651,0.177408,0.4439567,0.01470883,0.003039876,0.2752437],"study_design_scores_gemma":[0.0002423718,0.00731741,0.0259518,0.0002459066,0.0002108009,0.008861264,0.009191446,0.2066786,0.6424652,0.005052259,0.0936029,0.0001800088],"study_design_candidate":"case_report","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9554665,0.0008965813,0.02403835,0.0003528094,0.00003143237,0.0004886517,0.0001929767,0.00007602567,0.01845665],"genre_scores_gemma":[0.9491595,0.001049079,0.03752448,0.0000458825,0.000006707437,0.000089903,0.0000960573,0.00001426777,0.01201414],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.009138374,"threshold_uncertainty_score":0.01817036,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0361231368564154,"score_gpt":0.2909083549186461,"score_spread":0.2547852180622308,"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."}}