Pentacyclic terpanes as indicators of compositional heterogeneities in biodegraded oil reservoir

Química Nova

Cruz, Georgiana Feitosa da¹  Franklin, Gabriel Clemente¹  Martins, Laercio Lopes¹  Universidade Estadual do Norte Fluminense, Macaé, Brasil¹  Souza, Eliane Soares de¹ 

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

【 授权许可】

Unknown