Underground self-operated ejector water discharge and gas production tool

• Main Authors: XIAO SHUQIN, YANG XUDONG, WEI YAMING, XU JIANNING, CHENG XIAOLI, LIU SHUANGQUAN, TIAN WEI, GUI JIE, ZHU DUANYIN, WANG XIONGXIONG, HAN QIANGHUI
• Format: Patent
• Language: English
• Published: 25.11.2015
• 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 provides an underground self-operated ejector water discharge and gas production tool, which mainly consists of an outer tube, a spray nozzle support pipe, a spray nozzle, a spray nozzle support seat, a throat-to-nozzle pipe, a throat pipe, a diffusion pipe, an upper joint and a hose. Main components are all formed by processing alloy steel. The spray nozzle is arranged in the spray nozzle support seat; the spray nozzle support pipe, the spray nozzle support seat, the throat-to-nozzle pipe, the throat pipe and the diffusion pipe are put in the outer tube in sequence; the hose is connected with the lower end of the outer tube through screw threads; the upper end of the outer tube is connected with the upper joint through screw threads; and the upper joint and a seat sealing hanger are connected through screw threads. The underground self-operated ejector water discharge and gas production tool has the advantages that an ejection technology is applied; and the self energy of underground natural gas and the spray nozzle of the ejector are sufficiently used for throttling and pressure reduction, so that the natural gas flow forms a differential pressure region in a mixing chamber, and accumulated liquid in a shaft can be sucked.