科学超深井硬岩取心关键技术

Key Technology of Coring in Hard Rocks for Scientific Ultra-deep Drilling

摘要:

科学超深井是人类观测深部地球的“望远镜”。获取典型区块的原状岩心，建立高分辨率的地层剖面及其物、化性剖面，是科学钻探的最主要的目的之一。在深部钻探中，钻头驱动方式和岩心提取方法，是影响工程能源消耗、施工周期和工程经费的关键因素，从多方面阐述了科学超深井取心钻进多项关键技术和难点，并提出了针对性的解决方案和研究方向。

Abstract:

Scientific ultra-deep well is the “telescope” for human observation on the deep earth. Obtaining undisturbed core in typical block to establish high resolution stratigraphic profile and physical & chemical profile is one of the most important purposes of the scientific drilling. In deep drilling, the drill bit driving mode and coring method are the key factors to affect energy consumption, construction period and project funds. The paper discusses some key technologies and difficulties in scientific ultra-deep core drilling and puts forward the specific solutions and research direction in several aspects.