A long plunger anti-sand long oil well pump equipped with a sand-blocking liquid-passing device

Abstract

The invention relates to a long plunger sand prevention long oil well pump with a sand retarding and liquid passing device. According to the technical scheme, the lower end of a fixing valve is connected with the sand retarding and liquid passing device, the upper end of an outer barrel of the sand retarding and liquid passing device is provided with an upper connector, a first inner cone nut is installed on the inner wall of the lower end of the outer barrel, a sand retarding and liquid passing circulation plate, a sand retarding and liquid passing reflection plate, a sand retarding and liquid passing collection plate and a pressurizer are sequentially arranged in an inner cavity of the outer barrel from bottom to top, a liquid inlet hole corresponds to the sand retarding and liquid passing reflection plate, the pressurizer is provided with a conical hole, liquid passes through the sand retarding and liquid passing reflection plate through the sand retarding and liquid passing circulation plate for first-stage sand retarding, liquid flows to the sand retarding and liquid passing collection plate through the sand retarding and liquid passing reflection plate for second-stage sand retarding, and liquid passes through the pressurizer so as to improve liquid pressure, and is pumped out to a pump barrel through a valve of the fixed valve. The long plunger sand prevention long oil well pump has the beneficial effects that the sand retarding and liquid passing reflection plate and the sand retarding and liquid passing collection plate can completely retard sand, therefore, a goodsand prevention effect is achieved, and the purpose of prolonging the pump effect can be achieved.

Description

technical field [0001] The invention relates to a sand control device and method for an oil well pump used in the petroleum industry, in particular to a long plunger sand control long oil well pump equipped with a sand blocking fluid passer. Background technique [0002] At present, in oil production, due to the influence of complex geological structure, oil wells containing fine silt in the oil liquid are common in oil fields all over the country. When using conventional oil pumps for production in these oil wells, long plunger pumps are generally used. Oil pumps, however, often have defects such as sand sticking and low pump efficiency, which make the oil well pumps fail prematurely, cause oil wells to stop production, frequent operations, and increase the production cost of crude oil. [0003] The publication number of the Chinese patent document is 102146911A, and the patent name is "A Long Plunger Sand Control Oil Suction Pump". The upstream floating valve, the downstr...

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Problems solved by technology

[0002] At present, in oil production, due to the influence of complex geological structure, oil wells containing fine silt in the oil liquid are common in oil fields all over the country. When using conventional oil pumps for production in these oil wells, long plunger pumps are generally used. Oil pumps, but often have defects such as sand sticking and low pump efficiency, which make the oil pump fail prematurely, cause oil wells to stop production, frequent operations, and increase the production cost of crude oil

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