Pentacyclic terpanes as indicators of compositional heterogeneities in biodegraded oil reservoir

Quimica nova

Cruz, Georgiana Feitosa da¹  Franklin, Gabriel Clemente¹  Martins, Laercio Lopes¹  Souza, Eliane Soares de¹ 

[1] Universidade Estadual do Norte Fluminense, Macaé, Brasil

关键词: reservoir geochemistry;    tar sands;    pentacyclic terpane.;   

DOI  :  10.5935/0100-4042.20140222

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Reservoir geochemistryhas been effectively used to evaluate compositional heterogeneity in petroleumreservoirs by employing oil fingerprinting technique to assess reservoir continuity,primarily in paraffin oil accumulations. In-reservoir biodegradation has resultedin vast deposits of heavy oils globally; therefore, the application of reservoirgeochemistry to such accumulations becomes necessary. We recommend the use ofpentacyclic terpanes instead of lower molecular compounds, which are less resistantto biodegradation. Using oil fingerprinting technique in this novel way enabledthe differentiation of oil composition among sedimentary facies of tar sands(Pirambóia Formation, Paraná Basin).

【 授权许可】

CC BY