Drilling tool combination tool and radial drilling well completion method

• Main Authors: XU KELIANG, ZHANG JIE, ZOU NING, LI DONGMEI, WU CHUNHONG, LONG WU, MA GUORUI, ZHAO HAIYANG, WAN XIAOYONG, SONG HAI, ZHAI KEJUN, JIA XIAOBIN
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• 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 discloses a drilling tool combination tool and a radial drilling well completion method, and relates to the field of radial drilling. The drilling tool combination tool comprises a flexible drilling tool, a floating valve connector, a jar, a drill bit and a drill rod; the flexible drilling tool is composed of a plurality of drilling rod units which are sequentially hinged through hinges, and the drilling rod units can be bent by a certain angle around the hinges. The flexible drilling tool is fixedly connected with the drilling rod pipe column through a drilling rod; the specific method comprises the following steps: pigging; scraping the pipe; establishing drilling fluid circulation; feeding into a whipstock and sitting and hanging; window opening and window repairing operation; deflecting operation is carried out; performing horizontal drilling operation; a flexible screen pipe is put down; recycling the whipstock; the flexible drilling tool with high practicability is utilized, the technical