Linear magnetic force activation double-piston intelligent oil extraction pump

Abstract

The invention discloses a linear magnetic-driving double-piston intelligent oil extraction pump, which comprises a sensor integrated short-circuited component which is positioned at the center of an underground host and connected with a plurality of groups of linear magnetic-driving components at the two ends respectively, a reciprocating piston pump assembly component which passes through the host and is axially connected, a magnetic-driving heat self-circulation radiator component, an aboveground power electronic intelligent control component and an optical cable for connecting the aboveground and the underground. The original linear magnetic-driving mechanism is adopted to directly drive an underground piston rod to drive double pistons to carry out reciprocating motion and do work, so as to change the piston cavity volume and achieve the goal of pumping the underground crude oil. The host of the oil extraction pump is internally provided with temperature, pressure, and flow rate sensors which form signal collection, transmission, calculation, detection, monitoring, control and feedback adaptive closed loop systems with the aboveground control component. As novel oil extraction equipment, the linear magnetic-driving double-piston intelligent oil extraction pump is applicable to oil extraction for oil wells with complex working condition such as oil extraction for deep wells, deep oceans, deviated wells and horizontal wells, waxy and sandy viscous oil wells and the like.

Description

1. Technical field [0001] The invention belongs to the technical field of mechatronics, or relates to a downhole electric submersible reciprocating piston pump that directly converts electromagnetic energy into mechanical energy, specifically, it belongs to a numerically controlled oil production equipment based on a new type of downhole linear magnetic drive reciprocating piston pump . 2. Background technology [0002] Efficiently and economically extracting crude oil from oil reservoirs and lifting it to the ground is an important goal of oil field development. Whether it is chemical, physical or mechanical methods, it has been pursued by people for more than 100 years. The development of science and technology has brought vitality to this traditional industry. For oil well conditions such as deep wells, deviated wells, marine mining, heavy oil wells, waxy wells, and sandy wells, there are endless solutions. The ever-emerging world energy crisis has become increasingly i...

AI Technical Summary

Problems solved by technology

Chinese patent 01213951.3 discloses a "linear motor reciprocating pump", Chinese patent 200520033498.8 discloses "a linear motor oil recovery pump", and Chinese patent 200720079226.0 discloses a "high-efficiency linear motor oil recovery pump". It is an active attempt to integrate the application of the motor and the downhole plunger pump, but what cannot be avoided is that under the limitation of the limited radial size in the downhole, the energy conversion efficiency and power factor are not high, and the working mode of the power structure of the pump body is not conducive to the heat dissipation of the main engine. The small inner diameter of the pump leads to low pump efficiency, and the thrust density per unit volume of the cylindrical linear motor directly affects the depth of the pump, so the pump efficiency can only be solved by extending the limited axial length of the pump. That is to say, for deep well oil production, large flow oil production, Deviated wells and horizontal wells produce oil, and the design parameters of the pump body are difficult to meet the needs of actual oil well conditions

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