Automatic drainage and gas production equipment for coal-bed gas well of medium-high-rank coal

• Main Authors: GUO XU, LU JIA, XIN KAI, YAN DONG, JIN KEKE, YANG JINDONG, YU ZHENFENG, GUO CHEN, LI YOUYI, CHANG HUIZHEN, SONG XINYA
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• 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; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention provides automatic drainage and gas production equipment for a medium-high-rank coal-bed gas well, which belongs to the technical field of coal-bed gas drainage and production and comprises a filter box, a water-gas separator and a functional box. An air inlet pipe is installed on the filter box, a first filter screen is fixedly installed on the inner side wall of the filter box, an inner cavity of the filter box is divided into an upper cavity and a lower cavity, the air inlet pipe is communicated with the upper cavity, and the lower cavity is connected with an inlet of the water-air separator through a conveying pipe; two sliding rods are fixedly installed on the inner side wall of the filter box, the two sliding rods are slidably connected with the same sliding plate, a brush is fixedly installed on the bottom face of the sliding plate and makes contact with the surface of the first filter screen, and a translation mechanism for driving the sliding plate to move is arranged on the filter box;