Intelligent core taking tool while drilling test

• Main Authors: ZHAO JINGJUN, LIANG BAOCHANG, XU CHUGANG, WANG SHUAI, WANG JIA, YAN YUJIE, ZENG ZHAOQI
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2019
• 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 belong to the field of petroleum geology drilling equipment, and in particular, relates to an intelligent core taking tool while drilling test. The tool comprises an upper joint, a shortconnector, an outer cylinder, a drill bit, an inner cylinder and a rock core jaw, and further comprises a main piston, a suspension bearing module, a core cutting ball and a core taking ball; the main piston, the suspension bearing module, the inner cylinder and the rock core jaw are fixedly connected in a core taking tool outer shell through threads in sequence from top to bottom; a sealing surface matched with the core cutting ball is arranged at the upper end of the main piston; the side surface of the main piston is fixedly connected with the upper joint through a pin; and the structure of the suspension bearing module comprises an upper connecting body, a pressing cap A, a lower connecting body, a pressing cap B and a bearing, wherein the upper connecting body is connected with the main piston. A liquid pass