The Indian Journal of Petroleum Engineering (IJPE) publish two types of issues; (1) Regular Issues and (2) Theme Based Special Issues (announced time to time). The Authors may submit articles electronically round the year using Article Submission System. After the final acceptance of the article, based upon the detailed review process, the article will immediately be published online. For Theme Based Special Issues, time bound special calls for articles will be announced. Authors are allowed to download published articles. There is no need to pay fee for downloading articles.