An exhaust sand control device for an oil well pump

Abstract

The invention relates to an exhaust sand control device for an oil well pump, which includes a plunger, a pump barrel, a joint, a fixed valve assembly, an exhaust separator, and a sand control structure assembly. The plunger is in the pump barrel, the floating valve ball is in the ball seat of the plunger valve, the lower end of the pump barrel is connected to the upper liquid outlet of the fixed valve assembly, and the sand control structure assembly is set at the liquid inlet under the fixed valve assembly; The valve assembly includes the oil outlet housing, the lower joint of the fixed valve, the fixed valve ball, and the oil outlet valve cover. The lower joint of the valve communicates with the oil outlet valve cover through the oil outlet valve guide hole, the fixed valve ball is set at the oil outlet valve guide hole, the oil outlet housing is divided into left half and right half, and the exhaust separator is hoisted on the right Half; the sand control structure assembly includes a gravity settling cylinder and a centrifugal sand settler. The invention can significantly reduce the occurrence of sand jams and air locks that often occur in the pump.

Description

Technical field: [0001] The invention relates to the field of oil production engineering devices, in particular to an exhaust sand control device for oil well pumps. Background technique: [0002] With the deepening of oilfield exploitation, some oilfields in my country have entered the "three-high" stage of high water content, sand content and gas content, which has exposed the problems of traditional oil well pumps in the process of use. The structure is simple and it is only suitable for pumping. Liquid fluid containing impurities and a small amount of gas is not suitable for the coexistence of gas-solid-liquid three-phase or even multi-phase. In this regard, it is necessary to study a kind of exhaust sand control device suitable for high solid ratio and high gas ratio when the oil well pump is working. [0003] Take the plunger oil well pump, an important facility for oilfield exploitation at present, as an example. During the working process, there is often sliding fric...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an exhaust sand control device for oil well pumps, this exhaust sand control device for oil well pumps is used to solve the problems such as sand jams and air locks that generally exist in the current oil well pump operation process, resulting in Phenomenon that the pumping efficiency and service life of the oil well pump are reduced

Images