Gas-preventing oil well lifting system
A technology of gas prevention and oil well, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problem of limited volume of gas prevention oil well pump, poor gas prevention effect of oil well lifting system, and is not conducive to improving oil well pump Pump efficiency and other issues, to prevent casing spray and casing wax deposition, reduce pump leakage, and reduce density
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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0054] It should be noted that the oil casing annulus involved in the embodiment of the present invention refers to the annular space between the oil pipe and the casing.
[0055] The embodiment of the present invention provides an oil well lifting system for gas prevention, as shown in the attached figure 1 As shown, the system includes: a casing 1, an oil pipe 2, and the oil pipe 2 is sleeved in the casing 1; further, the system also includes: a heavy ball pump 3, an anti-gas device 4, and a tail Pipe 5; oil pipe 2 is provided with gas lift valve 6, and the lower port of oil pipe 2 communicates with the discharge port of heavy ball pump 3; gas-proof device 4 is used to separate crude oil and gas in the oil jacket annulus, and the gas...
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