Well dynamic direct-driven plunger oil-well pump

Abstract

The well power driven plunger type oil pumping pump is one lifting device for oil extracting machine in oil field. The well power driven plunger type oil pumping pump has outer tube, pump tube inside the outer tube and connected to pump tube union, fixed valve assembly, plunger and sand scraping cup inside the pump tube, upper plunger valve assembly, lower plunger valve assembly with oil intake union, link rod, motor and sieve tube. The oil pumping pump has high efficiency and low cost.

Description

Background technique:

[0001] The invention relates to a lifting device for mechanical oil recovery in an oil field, in particular to a plunger type oil well pump directly driven by downhole power. Technical field:

[0002] At present, more than 90% of oil production wells in my country use rod pump lifting devices consisting of pumping units, oil pipes, sucker rods and pumps, and only a very small number of oil production wells use rodless pump lifting devices. There are many problems in the use of the rod pump lifting device: one is that the pumping unit needs to use intermediate links such as a reducer, a four-bar linkage, and a sucker rod to change the rotational motion of the motor into a linear motion, which has poor balance and low efficiency. Low; second, high material consumption, large floor area, large investment, and high cost; third, many intermediate links, many useless work, and high energy consumption. The energy consumption of oil production equipment has acc...

Images