最近,克利斯坦森公司推出一种防堵岩心管(见附图),其特点是: 1.可自动排除岩心堵塞;2.提高岩心采取率;3.提高回次进尺,4.与现有岩心管通用;5.易于操作,便于现场安装。这种防堵岩心管是在普通双层岩心管的内管上部加装防堵装置。该装置结构简单、作用可靠,在破碎地层中钻进可采 Recently, Kristensen introduced a plug-in core tube (see attached) that features: 1. It automatically excludes core plugging; 2. Improves core pick-up; 3. Increases footage, 4. Works in conjunction with existing Core tube universal; 5. Easy to operate, easy site installation. This anti-plug core tube is installed in the upper double-core pipe core anti-blocking devices. The device is simple in structure and reliable in operation, and can be taken in the broken formation