Retractable cutting and fishing integrated tool for coiled tubing

• Main Authors: DU ZHEN, ZHOU WENBING, LI HENGYU, ZHANG ZHIJIE, ZHANG WUTAO, HUANG WEI, ZHANG GEN
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• 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 relates to the technical field of well repair tools in the petroleum industry, and discloses a coiled tubing returnable cutting and fishing integrated tool which comprises a guiding shoe, a barrel and an upper connector, the upper connector and the guiding shoe are connected to the two ends of the barrel respectively, a returnable slip assembly and a shearing cutter are sequentially arranged in the barrel in the direction close to the guiding shoe, and the shearing cutter is connected with the guiding shoe. The returnable slip assembly comprises a slip cylinder and a basket type slip, the outer surface of the basket type slip is provided with a reverse-rotation wide thread, the inner wall of the slip cylinder is provided with an inner reverse-rotation wide thread, the inner reverse-rotation wide thread is meshed and matched with the reverse-rotation wide thread, the inner wall of the basket type slip is provided with a trapezoidal sawtooth thread, and the inner wall of the basket type slip is pr