Golf-type gas lift ball, gas lift oil recovery device, control system, and control method

A gas lift ball gas lift oil production device, comprising:

• a gas lift ball for lifting oil and/or gas in a gas lift tee with power provided by pressurized gas in the gas lift tee;
• a ball retrieving and pitching device;
• and
• a multistage start-up device;
• wherein the gas lift ball comprises a spherical body configured with a diameter less than inner diameters of a gas supply pipe and a gas lift pipe of the gas lift tee, and a plurality of protrusions on an outer wall of the spherical body;
• wherein the ball retrieving and pitching device comprises a housing, a ball inlet, a ball outlet, a gas outlet and an oil outlet are formed on the housing, the ball inlet is located above the ball outlet, a slide rail for the gas lift ball is formed between the ball inlet and the ball outlet, one end of the slide rail is connected with the ball inlet while the other end thereof is connected with the ball outlet, the inner diameter of the slide rail is more than the inner diameter of the ball outlet, a plurality of gaps are formed on the sidewall of the slide rail, and a pressure conversion valve is installed at an end of the ball outlet;
• and
• wherein the multistage start-up device comprises the gas lift tee, together with a plurality number of gas lift valves arranged along the length of the gas lift tee;
• the gas lift tee is in a Y shape, and comprises the gas supply pipe, the gas lift pipe and the tailpipe;
• the plurality of gas lift valves are in an H shape, and comprises a first channel, a second channel and a third channel, wherein the first channel is connected to the gas supply pipe, the second channel is connected to the gas lift pipe, the first channel and the second channel are connected together by the third channel, and the third channel is internally provided with a movable gate.