This 3-sentence document summary provides high-level information about the original document: The original document is a report from Chevron dated December 11, 2013 titled "GEUREUDONG 3G SURVEY OPERATIONAL LOOKBACK" and was authored by Riki Irfan, Chris nelson, Sintar Purba, Budi Kristianto, Christovik H. Simatupang, and Fanji P. Junanda.