Single-acting double-tube coring device

• Main Authors: WANG LEI, WANG DAHAI, GUO JUNCHENG, WANG JUN, CAO AIMING, SUN LIN, YANG JICAI, RAO HU, HU GUOYIN
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention relates to a single-action double-tube coring device, which comprises an outer tube, a core taking device, a core taking device, a core taking device, a core taking device, a core taking device and a core taking device, the driving device is used for driving the outer pipe to rotate along the central axis of the outer pipe; the inner pipe is rotationally mounted in the outer pipe, and the central axis of the inner pipe coincides with the central axis of the outer pipe; the winding device is used for winding the flexible rope; the annular flexible telescopic net is arranged outside the inner pipe in a sleeving mode, the end, close to the drill bit, of the annular flexible telescopic net is turned into the inner pipe, a drawing rope is arranged in the inner pipe in a penetrating mode, and one end of the drawing rope is connected with the end, turned into the inner pipe, of the annular flexible telescopic net. The hard rock core and the soft rock core are wrapped and lifted by the annular flexible