超深井取心技术在塔深1井的应用  

APPLICATION OF CORING TECHNOLOGY FOR ULTRADEEP WELL IN WELL TASHEN 1

作　　者：陈立[1] 冯明[1] 张金海 陈晓彬[1] 

机构地区：[1]四川石油管理局钻采工艺技术研究院 [2]西北石油局工程处

出　　处：《钻采工艺》2007年第1期1-3,9,共4页Drilling & Production Technology

摘　　要：塔深1井目前是亚洲最深井。由于该井超深(设计井深8000m),钻具柔性强,需要考虑的安全因数多,而且取心井段在该井侧钻后斜裸眼中,斜裸眼段长,岩性为白云岩为主,裂缝发育,岩性很破碎,取心施工难度非常大。通过取心工具和钻头的优选、参数优化以及技术措施的强化,该井取心进尺18.70m,平均取心收获率78.8%,取心深度达到8408m,刷新了四川石油管理局钻采工艺技术研究院在关基井(井深7151.40m,收获率61.3%)保持29年的全国最深井取心记录,创造了国内目前最深井取心记录,也为中国超深井破碎地层取心积累了更多的经验。The designed depth of well Tashen 1 is 8000m, core interval is in inclined open hole after sidetracking. The well has long inclined open hole section, developed fracture and breakable lithology, so, its coring operation is very difficult. Through optimization of coring tools and bits and improving technical measures, the coring footage of the well is 18.7m, average core recovery is 78.8%, coring depth is high up to 8408m. It created the coring note of deepest well in China at present.

关 键 词：塔深1井 取心钻井 超深井 取心工具 

分 类 号：TE244[石油与天然气工程—油气井工程]