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Well dynamic direct-driven plunger oil-well pump

A plunger-type, oil-pumping technology, used in pumps, wellbore/well components, machines/engines, etc., can solve the problems of large maintenance workload, high investment and maintenance costs, and narrow application scope, saving equipment The effect of capital investment, reducing the workload of adjusting parameters and changing pumps, and reducing mining costs

Inactive Publication Date: 2005-09-28
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low efficiency, high cost, high energy consumption, heavy maintenance work workload and high investment and maintenance cost of using rod pump lifting device in existing oil production wells. , a downhole power direct drive plunger type oil well pump provided for the narrow application range
[0004] The present invention has the following beneficial effects: 1. The present invention solves the problem of low efficiency, high cost, high energy consumption, heavy maintenance workload and the problem of using rodless pump lifting devices in existing oil production wells. There are problems of high investment and maintenance costs and narrow application range. The oil well pump combines the motor and the plunger type oil well pump into one, and uses a linear motor or a rotary motor that has been decelerated and commutated into a linear motion. The motor mover of the linear motor It can be directly connected with the plunger of the oil well pump through the connecting rod; while the rotary motor is decelerated and reversed, and the output linear motion is connected with the plunger of the oil well pump through the push rod

Method used

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  • Well dynamic direct-driven plunger oil-well pump

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specific Embodiment approach 1

[0006] Specific implementation mode one: combine figure 1 Describe this embodiment, this embodiment consists of the upper joint 1, the outer cylinder 2, the pump cylinder 7, the pump cylinder joint 6, the fixed valve assembly 8, the pump cylinder fixed joint 19, the plunger 13, the sand scraping cup 9, and the joint 12 , plunger upper valve assembly 10, plunger lower valve assembly 16, plunger oil inlet joint 17, connecting rod 18, motor stator 22, screen pipe 20, lower joint 23, motor mover 21; upper joint 1 The lower end of the outer cylinder 2 is fixedly connected with the upper end of the outer cylinder 2, the outer cylinder 2 is equipped with a pump cylinder 7, the upper end of the pump cylinder 7 is fixedly connected with the lower end of the pump cylinder joint 6, and the upper end of the pump cylinder joint 6 is connected with the fixed valve assembly 8 The fixed cover 8-1 is fixedly connected, the hole between the outer cylinder 2 and the pump cylinder 7 is fixed with...

specific Embodiment approach 2

[0007] Specific implementation mode two: combination figure 1 Describe this embodiment, the fixed valve assembly 8 of this embodiment is made up of fixed valve cover 8-1, fixed valve ball 8-2, fixed valve seat 8-3; Fixed valve seat 8-3 is contained in In the hole of fixed valve cover 8-1, fixed valve ball 8-2 is housed in the hole between fixed valve seat 8-3 and fixed valve cover 8-1. A fixed valve assembly 8 is fixed on the top of the pump barrel joint 6, and only when the lower end pressure is greater than the upper end pressure, the fixed valve ball 8-2 in the fixed valve assembly 8 can be opened, and the reverse pressure difference is then closed. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0008] Specific implementation mode three: combination figure 1 To illustrate this embodiment, the valve assembly 10 on the plunger of this embodiment is composed of a valve cover 10-1 on the plunger, a valve ball 10-2 on the plunger, and a valve seat 10-3 on the plunger; the joint The upper end of 12 is equipped with the valve seat 10-3 on the plunger, and the upper end of the valve seat 10-3 on the plunger is equipped with the valve cover 10-1 on the plunger, and the hole of the valve cover 10-1 on the plunger is equipped with There are plungers 10-2 on Verball. The valve assembly 10 on the plunger moves with the plunger 13 in the pump barrel 7. Only when the pressure at the lower end is greater than the pressure at the upper end, the valve ball 10-2 on the valve in the valve assembly 10 on the plunger can be opened. The reverse differential is closed. Other components and connections are the same as those in the first embodiment.

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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...

Claims

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Application Information

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IPC IPC(8): E21B43/00F04B47/06
Inventor 王岩楼张传绪刘遵权柴立新董经武
Owner DAQING OILFIELD CO LTD
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