Oil field wellhead device with multi-stage coupling viscosity reduction function

Abstract

The invention discloses an oil field wellhead device with a multi-stage coupling viscosity reduction function, and relates to the technical field of oil field exploitation. The oil field wellhead device comprises an access pipe, wherein one end of the access pipe is connected with a first flow measuring box; one end of the first flow measuring box is provided with an opening valve; one end of the opening valve is provided with a pump pipe; one end of the pump pipe is provided with a first steering pipe; one end of the first steering pipe is provided with a flow limiting pipe; one end of the flow limiting pipe is provided with a porous connecting pipe; a viscosity reduction pipe is arranged above the porous connecting pipe; a limiting pipe is arranged above the viscosity reduction pipe; one side of the limiting pipe is provided with a limiting disc; the limiting disc is rotationally provided with a swing disc; one end of the porous connecting pipe is provided with a limiting cylinder; and the outer part of the limiting cylinder is sleeved with a fixing block. The oil field wellhead device has the advantages that the rotation of a motor is adjusted, the two ends of the swing disc are controlled to swing up and down through an adjusting rod, a flow limiting block slides up and down in the limiting pipe to control the amount of a viscosity reducer flowing into the viscosity reduction pipe, and the viscosity of petroleum is reduced to different degrees.

Description

technical field [0001] The invention relates to the technical field of oilfield exploitation, in particular to an oilfield wellhead device with a multi-stage coupling viscosity-reducing function. Background technique [0002] The content of hydrocarbon components in heavy oil is low, the content of asphaltenes and colloids is high, and the content of straight chain hydrocarbons is low, which leads to the characteristics of high viscosity and high density in most heavy oils, and it is quite difficult to mine and transport. In the process, a viscosity reducer needs to be added to reduce the viscosity of petroleum, so as to facilitate the transportation of petroleum and subsequent refining and purification. In the process of reducing the viscosity of petroleum, a viscosity reducer is usually used for viscosity reduction; [0003] However, the existing viscosity reducing agent addition process cannot adjust the addition of additives according to the viscosity reducing effect. Se...

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Problems solved by technology

[0003] However, the existing viscosity reducing agent addition process cannot adjust the addition of additives according to the viscosity reducing effect. Secondly, when reducing the viscosity of oil, due to the large flow of oil in the pipeline, it is impossible to reduce the viscosity of oil during the process of reducing the viscosity of the oil. Grasping and controlling the extreme value of the flow rate of oil often leads to insufficient viscosity reduction effect due to too fast flow rate;

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