The objective of the Journal of Petroleum Science and Engineering is to bridge the gap between petroleum engineering and petroleum geology by publishing explicitly written articles intelligible to scientists and engineers working in any field of petroleum engineering or petroleum geology. An attempt is made in all issues to balance the subject matter and to appeal to a broad readership. The Journal of Petroleum Science and Engineering covers the fields of petroleum geology, exploration, and engineering in its broadest possible sense. Topics include: origin and accumulation of petroleum; petroleum geochemistry; reservoir engineering; rock mechanics/petrophysics; well logging, testing and evaluation; mathematical modelling; enhanced oil recovery; petroleum geology; compaction/diagenesis; petroleum economics; drilling and drilling fluids; fluid mechanics in porous media; reservoir simulation; production engineering; formation evaluation; exploration methods. Papers will be published with the minimum of publication delay. Research articles, case histories, field process reports, short communications, book reviews, symposia proceedings and review articles are accepted. Generally, review articles on some topic of special current interest will be published.