High-efficiency spiral-flow type sand remover for oil field wellhead

Abstract

The invention relates to the technical field of sand removers, in particular to a high-efficiency spiral-flow type sand remover for an oil field wellhead. The high-efficiency spiral-flow type sand remover comprises a barrel body, a sand unloading device, a sand discharging separation barrel and a flow guide rod, wherein a liquid inlet and a liquid outlet are respectively formed at the left end and the right end of the barrel body; the sand discharging separation barrel is fixedly arranged in the barrel body; the flow guide rod is arranged in the sand discharging separation barrel; spiral blades are fixed on the flow guide rod; and a liquid conveying channel is formed between the spiral blades and the sand discharging separation barrel. The high-efficiency spiral-flow type sand remover is rational and compact in structure and convenient to use; a sand discharging cavity is a conical cavity in which a communicating hole is used as a center and two sides are provided with narrow outer parts and wide inner parts; furthermore, the sand discharging elongated holes are distributed along the circumference in a rightward spiral manner, and the axial direction of the sand discharging elongated holes is tangent with the inner wall of the barrel body; therefore, impurity particles can be effectively concentrated at the communicating hole, and the sand discharging effect is relatively good; impurities can be prevented from being retained in the sand discharging cavity; and moreover, the sand discharging elongated holes are elongated, so that the sand discharging amount is increased, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of desanders in oilfield wellhead operations, and relates to a high-efficiency cyclone type desander for oilfield wellheads. Background technique [0002] At present, in oil field wellhead (oil production and oil testing) operations, crude oil is collected underground, transported to the surface, and then transported to the oil plant by pipelines or transport vehicles. Before this process, sand removal must be carried out through a desander, otherwise the crude oil The sand particles in the oil will wear the supporting equipment such as the transport vehicle; the ordinary desander currently used is easy to block the long sand discharge hole in the sand discharge separation cylinder, so that the impurities in the oil are not completely discharged, and the sand discharge effect is poor; at the same time In the sand discharge cavity, impurities are easy to stay and need to be cleaned frequently, which is very i...

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Problems solved by technology

[0003] The present invention provides a high-efficiency cyclone desander for oil field wellhead, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problems of poor sand removal effect, inconvenient use and low work efficiency of ordinary desanders.

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