Xinjiang Petroleum Geology (XPG) publication fees are fixed and independent of article page length. XPG offsets peer review management expenses by charging a publication fee, also known as an Article Processing Charge (APC), to authors for each article published. A publication fee of 100 RMB is payable upon article acceptance.Submit your article today at http://xjsydz.paperopen.com/Login.aspx?Role=author.