Axial oscillating tool for drill string

An oscillating tool and axial technology, applied in vibration drilling, liquid/gas jet drilling, etc., can solve the problems of limited drilling footage in the horizontal section, poor ability to transmit drilling pressure, and small size of coiled tubing, etc., to improve mechanical drilling. High speed, strong axial vibration ability and simple structure

Inactive Publication Date: 2012-04-18
SOUTHWEST PETROLEUM UNIV
View PDF7 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small size of coiled tubing, large flexibility, and poor ability to transmit WOB,...

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
  • Axial oscillating tool for drill string
  • Axial oscillating tool for drill string
  • Axial oscillating tool for drill string

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 , figure 2 with image 3 As shown, a drill string axial oscillation tool is composed of two parts: a stator-rotor unit 14 and a valve unit 15, the stator-rotor unit 14 is composed of a stator housing 2, a stator rubber 3 and a rotor 4; the valve unit 15 It consists of a valve housing 5, a valve body 8, a valve body nut 7, a valve seat 10, a valve seat nut 11, a valve seat support body 12, and a valve seat seal 9. It is characterized in that: the inner wall of the stator housing 2 is vulcanized with stator rubber 3. The stator rubber 3 and the rotor 4 form a sealed cavity, and the lower end of the rotor 4 is provided with a flow channel oblique hole 6, and the valve body 8 is fixed to the lower end of the rotor 4 through the valve body nut 7; and the valve seat 10 is connected to the valve seat through the valve seat nut 11 On the support body 12, a valve seat seal 9 is installed between the valve seat 10 and the valve seat nut 11, and the valve seat ...

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 relates to an axial oscillating tool for a drill string, which is used for improving extension and drilling capacities of a horizontal section during drilling of a directional well, a horizontal well and a large-displacement well. The technical scheme is that: the axial oscillating tool for the drill string consists of a stator and rotor unit and a valve unit, wherein an inner wall of a stator is adhered to stator rubber; the stator rubber and a rotor form a sealed chamber; the lower end of the rotor is provided with a flow passage inclined hole; a valve body is fixed to the lower end of the rotor through a valve body nut; a valve seat is connected to a valve seat support body through a valve seat nut; the valve seat support body is arranged in a valve shell through threads; the valve seat is matched with the valve body to form opening and closing of the valve along with movement of the rotor; and the valve shell is in threaded connection with a stator shell. The axial oscillating tool for the drill string has the advantages of high axial oscillation capacity, simple structure, safety and the like; and the extension and drilling capacities of the horizontal section of the directional well, the horizontal well and the large-displacement well can be improved.

Description

technical field [0001] The invention relates to a drilling string axial oscillation tool used for improving the extended drilling ability of the horizontal section in the drilling of directional wells, horizontal wells and extended displacement wells. Background technique [0002] With the deepening of the exploration and development process, the proportion of directional wells, horizontal wells and extended reach wells is increasing. Long horizontal section drilling technology has been widely used at home and abroad, mainly due to its good input-output ratio. At present, the drilling cost of horizontal wells in foreign countries has been reduced to 1.2 to 2 times that of vertical wells, while the output is 4 to 8 times that of vertical wells. As a potential new technology, horizontal well technology mainly has the following advantages: restoring the productivity of old wells, developing complex types of oil and gas reservoirs, facilitating exploration and development evalu...

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
IPC IPC(8): E21B7/24E21B7/18
Inventor 祝效华贾彦杰童华
Owner SOUTHWEST PETROLEUM UNIV
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