The papers which have been sent to this journal by paying attention to guidance for writing papers by academy members or researchers of the petroleum fields will be presented for first consideration in monthly committee of the editorial board of this journal. Some papers will be omitted before sending to reviewers due they do not have scientific quality, or their subjects are repetitive; besides, other papers will be sent to reviewers (this process will last two months). The papers accepted by the members of the committee will be sent to three reviewers. The process of reviewing will last one month at least and eight month at last. The opinions or tips of reviewers about the papers which must be revised will be sent to the corresponding author. After revising the paper by the corresponding author, the journal will send the revised paper to the final reviewers. If the final reviewer confirms that the pepper is completely and correctly revised, it will be published by this journal.