Underground driving ball screw oil pumping machine

A ball screw and pumping unit technology, which is applied in wellbore/well components, production fluids, earth-moving drilling and other directions, can solve problems such as hidden safety hazards, high manufacturing costs, low work efficiency, etc., to improve service life, Simple structure, no small rotation effect

Pending Publication Date: 2019-11-22
大庆拓维石油科技开发有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a downhole driven ball screw pumping unit, simplify the structure of the beamless pumping unit, and install the main mechanism of the transmission, the ball screw downhole, to solve the problems in the prior art The ball screw pumping unit has technical problems such as short stroke, low work efficiency, high failure rate, high manufacturing cost, and potential safety hazards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Underground driving ball screw oil pumping machine
  • Underground driving ball screw oil pumping machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] As shown in the figure, the downhole driven ball screw pumping unit includes the downhole driven ball screw pumping unit, including motor 1, wellhead cross 2, ball screw drive assembly and sucker rod,

[0022] The wellhead cross 2 is installed and fixed on the wellhead, the upper part of the wellhead cross 2 is fixedly connected with the upper flange 4 through bolts, and the lower part of the wellhead cross 2 is fixedly connected with the lower flange 5 through bolts; the ball wire The rod drive assembly includes ball screw 3, bearing 6, nut 7, oil pipe 8, bushing 9, upper seal sleeve 10, lower seal sleeve 11, anti-rotation guide key 12 and column anchor 13, the ball screw drive The assembly is installed underground and fixedly connected with the wellhead cross 2 through the upper flange 4 and the lower flange 5 respectively.

[0023] The wellhead cross 2 is installed and fixed at the wellhead, the upper part of the wellhead cross 2 is fixedly connected with the upper f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an underground driving ball screw oil pumping machine, and belongs to the technical field of walking-beam-free oil pumping machines. A motor, a well mouth big cross, a ball screw drive assembly and an oil pumping rod are included. The ball screw drive assembly comprises a ball screw, a bearing, a nut, an oil pipe, a casing pipe, an upper seal sleeve, a lower seal sleeve, arotation stop guide key and a pipe column anchoring device. No components except a motor and other electric control equipment are arranged on the ground, and the purposes of safety and environment protection are achieved. The motor directly drives the ball screw, and the transmission efficiency is 95% or above. The ball screw drive assembly is arranged underground, the length of an underground shaft is large, the stroke of the oil pumping machine can be increased, and the purpose of the long stroke is achieved. The whole ball screw is protected by the seal sleeves, oil water impurities and thelike cannot enter the ball screw, and the service life of the ball screw is prolonged. Due to usage of the pipe column anchoring device, in the whole machine running process, a pipe column is free ofrotation, vibration is little, and accordingly equipment running is safe and stable.

Description

technical field [0001] The invention belongs to the technical field of beamless pumping units, and in particular relates to a downhole driven ball screw pumping unit. Background technique [0002] The pumping units used for oil production in oil fields are mainly divided into two categories, namely beam pumping units and beam pumping units without beams. The beamless pumping unit has the advantages of simple structure, convenient installation, high transmission efficiency, safety and environmental protection, so it is very popular in the field. And the ball screw pumping unit of the prior art has the following defects: [0003] 1. Since the equipment is installed on the ground, the wellhead cross is limited by the height, and the stroke of the pumping unit is also limited accordingly. The stroke cannot be designed to be too long, so the work efficiency is low. [0004] 2. Since the equipment is equipped with a balance weight, the up and down movement of the balance weight ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
CPCE21B43/126
Inventor 梅东辉
Owner 大庆拓维石油科技开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap