发明名称 DRILLING METHOD, METHOD FOR PERFORMING A PRESSUREMETER TEST, AND CORRESPONDING ASSEMBLY
摘要 The invention relates to a method for drilling into the ground, which includes the following step: digging a longitudinal hole (6) in the ground (8), simultaneously lining the hole (6) using a tube (14) extending substantially over an entire longitudinal length of the hole (6). The tube includes an inner tube (16) and an outer tubular sheath (18) inserted between the inner tube (16) and a wall of the hole (6), the method including, after the step of digging the hole (6), a raising step during which the inner tube (16) is removed from the hole (6), the outer sheath (18) remaining in place inside the hole (6).
申请公布号 WO2016162513(A1) 申请公布日期 2016.10.13
申请号 WO2016EP57814 申请日期 2016.04.08
申请人 CALYF 发明人 COUR, Francis
分类号 E21B7/20 主分类号 E21B7/20
代理机构 代理人
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