METHOD TO REAL-TIME DETERMINE THE BIT UP-DOWN DRILLING DIRECTION AND THE POSITION IN TARGET OIL-GAS FORMATION
XIA Hong-quan CHEN Ping SHI Xiao-bing XU Xian-guang ZHANG Wen-bo
西南石油大学学报(自然科学版) . 2003, (4): 22 -26 .  DOI: 10.3863/j.issn.1000-2634.2003.04.07