Try to look up the work of Zhendi Wang (now at Environment Canada). He has a lifetime of work on petroleum forensics. Here is the link to his crude oil forensics book on Google books: http://www.google.ae/books?hl=en&lr=&id=lWeqTPaHR7kC&oi=fnd&pg=PP2&dq=forensic+fingerprinting+of+crude+oils&ots=VoUYOhSkx-&sig=7-lp4_eTpxuGmlw_NMjEtG_IEjc&redir_esc=y#v=onepage&q=forensic%20fingerprinting%20of%20crude%20oils&f=false .
I would suggest"The Biomarker Guide: Interpreting Molecular Fossils in Petroleum and Ancient Sediments" by Kenneth E. Peters and J. Michael Moldowan, and its second edition "The Biomarker Guide: Biomarkers and Isotopes in the Environment and Human History", by K. E. Peters, C. C. Walters,J. M. Moldowan.
The second edition of The Biomarker Guide is a fully updated and expanded version of this essential reference. Now in two volumes, it provides a comprehensive account of the role that biomarker technology plays both in petroleum exploration and in understanding Earth history and processes. Biomarkers and Isotopes in the Environment and Human History details the origins of biomarkers and introduces basic chemical principles relevant to their study. It discusses analytical techniques, and applications of biomarkers to environmental and archaeological problems. The Biomarker Guide is an invaluable resource for geologists, petroleum geochemists, biogeochemists, environmental scientists and archaeologists.