Non-core drilling device for wire line core drilling

• Main Authors: YANG YINGHUA, LI YUNFENG, JI YUPING, LIU GUOWEI, LI SHUANGJUN, WANG LIFENG, QI ZHIHU, LUO BIN, FU GAOKUI, CAO DONGFENG, SHI JIFENG, WANG YONGCAI, LIU WEIJUAN, DU WENBIN, HU XIANGZHI, YUAN ZHIJIAN, LIU KUNPENG, ZHANG XIAOANG, WANG XINMIN, XU YING, HAO DENGFENG, SHI XIMIN, JIN GUANGJUN, ZHANG ZHENLUN, LIU BO, WU SHIWEI, GUO DONGJIE, XU PEIYUAN, CAO WEI, LI YAHUI, LI XUEBIN
• Format: Patent
• Language: English
• Published: 04.02.2015
• 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

A non-core drilling device for wire line core drilling comprises an outer tube and an inner tube. The lower end of the inner tube is connected with an inner drill bit. The lower end of the outer tube is connected with a coring bit through a reamer. The inner tube is arranged in the outer tube. The inner tube and the outer tube are connected through an elastic clamp. The inner tube is sleeved with a centralizing ring, and the centralizing ring is arranged in the reamer. The coring bit is hollow. The inner drill bit is arranged in the coring bit and extends to the outside the outer drill bit by 2 cm to 3 cm. The non-core drilling device for wire line core drilling has the advantages that the inner drill bit is arranged in the coring bit of the outer tube, the inner drill bit and the coring drill bit jointly form a solid bit body, conversion between coring drilling and non-core drilling can be achieved rapidly under the condition that a drill rod is not withdrawn and only a rope coring drill is withdrawn, and the purpose that coring drilling and non-core drilling are carried out alternately can be achieved under the condition that the drill rod does not need to be taken off.