松科1井南孔钻井取心技术

Nankong well drilling and coring technology for Songke1 well

孙庆仁 申胡成 杨新斌 杨春和 袁福祥

SUN Qing-ren SHEN Hu-cheng YANG Xin-bin YANG Chun-he YUAN Fu-xiang

大庆石油管理局钻探集团钻井三公司, 黑龙江大庆 163411

Daqing Petroleum Administration Bureau, Exploration and Drilling Group, Drilling No.3 Company, Daqing 163411, Heilongjiang, China

松科1井为世界上第1口白垩纪大陆科学钻探井,是国家重点基础研究发展计划"白垩纪地球表层系统重大地质事件与温室气候变化"项目的重要研究内容,是科学家首次在欧洲之外实施的"白垩纪科学钻探"计划。茂206井为松科1井之南孔,设计连续取心945 m,取心工艺复杂、技术新、要求高。茂206井自2006年8月在大庆油田开钻以来,采用了包括优选井身结构、优选有机硅钻井液体系等可行性技术方案;同时探索出提高取心效率、加快科学钻探速度的有效途径,保证了施工的顺利进行,各项指标均达到科学钻探要求。茂206井连续取心104筒,取心进尺946.83 m,取心收获率达到了99.73%,提前80.5 d完成了原定工作计划,为揭开白垩系地质构造奥秘,洞察未来全球气候变化,重新科学认识松辽盆地提供了科学依据。

Songke 1 well,the first cretaceous continental scientific drilling well in the world,is the key research issue of cretaceous important geological events of earth surface system and greenhouse climate change project in national basic research program and the first program of cretaceous scientific exploration and drilling accomplished by scientists out of Europe.Nankong well in Songke1 well is designed to core continuously until 945 m,which is complicated,new and with high requirements.Mao 206 well drilled in Daqing oilfield since August,2006,has taken measurements such as optimizing well structure,silicon drilling fluid system,and so on.Meanwhile,feasible technology scheme explores effective approach to improving coring efficiency,increasing scientific exploration and drilling velocity,which ensures the construction proceeding smoothly and each index achieving scientific requirements.Mao 206 well cores 104 cylinders continuously,having 946.83 m footage and 99.73% harvesting rate of coring,which accomplishes the original plan 80.5 d in advance and creates the highest efficiency in Chinese continental scientific exploration and drilling.

10.3969/j.issn.1000-7393.2007.05.003