松软、松散及易溶地层钻进取心技术  

Technology of drilling and coring in soft, loose and soluble formations

作　　者：程红文 朱恒银[2] 王强[2] 刘兵 CHENG Hong-wen;ZHU Heng-yin;WANG Qiang;LIU Bing(CIGIS(China)Limited,Beijing 100007,China;No.313 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Lu’an,Anhui 237010,China)

机构地区：[1]建设综合勘察研究设计院有限公司,北京100007 [2]安徽省地质矿产勘查局313地质队,安徽六安237010

出　　处：《安徽地质》2022年第1期48-52,共5页Geology of Anhui

基　　金：安徽省科技重大专题项目“5000米新型能源勘探智能钻探装备与技术”(编号:2019a05020012)资助。

摘　　要：松软、松散及易溶地层钻进时,岩心容易冲蚀、溶蚀,扰动性较大,常规钻进方法难以保证岩心采取质量。近年来,我国已在复杂地层取心及机具研究方面取得了长足的发展,目前国内常用的不扰动保真取心(样)钻具有:三重管取心钻具、单动双管半合管取心钻具和活塞式取心钻具等,配合使用特殊的钻头及钻进取心工艺,能够采取原状不扰动样,在国内多个工程项目中取得了良好的应用效果。When drilling in soft, loose and soluble formations, the core is easily eroded and dissolved, and the disturbance is large. The conventional drilling method is difficult to ensure the core quality. In recent years, China has made great progress in the research of coring and tools for complex formations. At present, the commonly used undisturbed coring tool in China includes triple tube coring tool, single-acting double-tube half-closed tube coring tool and piston coring drill. By using special bit and drilling coring technology, undisturbed samples can be collected, and good results have been achieved in many domestic projects.

关 键 词：松软 松散 易溶 原状样 

分 类 号：P634[天文地球—地质矿产勘探]