Double-channel steam injection and oil production sand preventing and scale preventing pump

Abstract

The invention discloses a double-channel steam injection and oil production sand preventing and scale preventing pump which comprises a pump body. A steam injection outer pipe assembly is arranged onthe pump body. An oil production assembly is arranged in the steam injection outer pipe assembly. The oil production assembly comprises a pump cylinder assembly, and a long plunger assembly is arranged in the pump cylinder assembly. The lower end portion of the pump cylinder assembly is connected with a fixing valve assembly, and the pump cylinder assembly is matched with the long plunger assemblyto form a variable containing cavity. Valve ball valve seats are arranged in the fixing valve assembly and the long plunger assembly correspondingly. The fixing valve assembly comprises a core shaftpart and a lining part arranged at the outer portion of the core shaft part. The double-channel steam injection and oil production sand preventing and scale preventing pump has the beneficial effectsthat the labor intensity of frequent well repairing is lowered, the service life is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention relates to an oil production pump in an oil field, in particular to a dual-channel steam injection oil recovery pump for sand and scale prevention, which belongs to the field of oil production pumps. Background technique [0002] Heavy oil wells often use steam injection huff and puff technology to reduce the viscosity of heavy oil and increase productivity. However, there are problems with the commonly used dual-purpose injection and extraction tools: [0003] 1. During steam injection and oil pumping, the medium passes through the inner hole of the pump barrel. During steam injection, it is easy to scale on the inner wall, which will hinder the lowering of the plunger, or shorten the life of the sealed working cylinder, and even cause accidents such as stuck pump and shutdown; [0004] 2. When pumping oil, solid impurities such as sand particles in the oil liquid will easily fall into the inside of the pump barrel, causing sand grindi...

AI Technical Summary

Problems solved by technology

During steam injection, it is easy to scale on the inner wall, which will hinder the lowering of the plunger, or shorten the life of the sealed working cylinder, and even cause accidents such as stuck pump and shutdown;

[0004] 2. When pumping oil, solid impurities such as sand in the oil are easy to fall into the inside of the pump barrel, causing sand grinding, and even sand jams to stop production accidents

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