Hollow rod one-way air lifting drainage gas production device

• Main Authors: FENG PENGXIN, XU WENLONG, LI ZAISHUN, WANG XIANWEN, RU ZHIJUAN, LI YANBIN, WANG XIAORONG, WANG HUI, HAN YONG
• Format: Patent
• Language: Chinese; English
• Published: 12.12.2012
• 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 utility model discloses a hollow rod one-way air lifting drainage gas production device, which is designed for solving the problems that accumulated water in a shaft is recharged to a stratum and the drainage efficiency is low in the conventional air lifting operation. The device mainly comprises an oil pipe valve and a high-pressure incoming gas pipeline which are connected with a wellhead oil pipe, packers and a one-way valve which are arranged at the bottom of an underground oil pipe, a hollow rod arranged in the center of the oil pipe, a gas production pipeline valve and a gas production pipeline which are connected with the hollow rod and the like. High-pressure incoming gas annularly enters a well from a pipe rod and acts on a gas-liquid two-phase interface, and a U-shaped pipe is formed in the space of the pipe rod, so that liquid level in the rod rises. When the liquid in the pipe rod is continually discharged and the pressure in the U-shaped space is reduced to be lower than the pressure in a sle