Crude Oil Properties Elucidation Using Fingerprinting Technique

Autor: Uche Ibemere, Bella Mmata, Mike Onyekonwu
Rok vydání: 2017
Předmět:
Zdroj: Day 2 Tue, August 01, 2017.
DOI: 10.2118/189133-ms
Popis: Crude oil fingerprint analysis is an investigative technique which can be employed during exploration and production to yield useful geochemical parameters, needed by the geologist, production engineer and oil spill management specialist. This analysis can give clues on depositional environment, thermal maturity, oil biodegradation and even aid production allocation. In this work ten crude oil samples from the Niger Delta region of Nigeria were analyzed. The analysis was done with Gas Chromatographic instrument equipped with flame ionization detector (GC-FID) and HP-PONA capillary column. The standard method used was based on ASTM D2887. In-house developed mathematical tools, such as star diagrams and production allocation graph were used to estimate the required geochemical parameters. The results of the analysis suggest that 50% of the analyzed samples were from oxic paleoenvironment which their ratios (above unitary (1)) indicated; 70% of them have predominance of odd carbon in their make-up, with carbon preference index (CPI) value above 1, while 60% of the analyzed crude oil samples were thermally immature. The outcome of this work can be used to estimate production allocation quota, identify culprit sample in time of spill incident and dispute between operators in a cluster area. Furthermore, it is an economical means of crude oil characterization when compared to other techniques.
Databáze: OpenAIRE