Device and method for restraining vortex-induced vibration of marine riser through upward-going energy of drilling fluid

A technology of energy suppression and vortex-induced vibration, applied in drill pipes, drilling equipment, drill pipes, etc., can solve the problems of increasing flow resistance, consumption, changing the weight of pipe strings, etc., to achieve zero energy consumption and low cost.

Inactive Publication Date: 2016-11-09
SOUTHWEST PETROLEUM UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Active suppression has not been adopted in actual engineering due to the need to consume additional energy
Although passive suppression can achieve a certain suppression effect, the added auxiliary structure

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
  • Device and method for restraining vortex-induced vibration of marine riser through upward-going energy of drilling fluid
  • Device and method for restraining vortex-induced vibration of marine riser through upward-going energy of drilling fluid
  • Device and method for restraining vortex-induced vibration of marine riser through upward-going energy of drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Examples:

[0023] The device of the present invention can be used as a basic unit, and multiple units are arranged on the riser 1 at a certain interval according to actual needs, so as to realize the segmented suppression of the vortex-induced vibration of the riser 1. During the actual installation, first open two circular holes arranged axisymmetrically on the pipe wall of the riser 1, and extend one end of the worm 4 from the circular hole into the annular space between the riser 1 and the drill pipe 2, and in the annular space The impeller 3 is installed at the end of the worm 4. Then, the gap between the worm 4 and the circular hole on the pipe wall of the riser 1 is filled with a sealed bearing 6. Two upper and lower collars 7 are sleeved on the outer wall of the riser 1 at intervals, and a rotating bearing 10 is arranged in the bearing seat 9 at the end of the supporting rod 8 of the collar 7. Insert the small diameter cylinder at the upper end of the spoiler rod...

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 a device and method for restraining vortex-induced vibration of a marine riser through upward-going energy of drilling fluid. The device is composed of a transmission system, a supporting system and flow disturbing rods. The flow disturbing rods are arranged in an axial symmetry mode with respect to the axis of the marine riser. Impellers of the transmission system are mounted in the annular space between the marine riser and a drill column. The impellers are driven to rotate when drilling fluid goes upwards, the impellers drive worms to rotate, the worms then drive worm wheels to rotate, and the worm wheels finally drive the flow disturbing rods to rotate. The flow disturbing rods are supported and fixed through the supporting system. Through rotation of the flow disturbing rods on the two sides of the marine riser, the wake region behind the marine riser is narrowed, detour flow lift force and resistance on the marine riser from ocean currents are lowered, and therefore vortex-induced vibration is restrained. The flow disturbing rods are driven to rotate through kinetic energy generated when drilling fluid goes upwards, externally provided energy is not needed, and the purposes of low cost and zero energy consumption are achieved.

Description

technical field [0001] The invention belongs to the technical field of offshore oil and gas engineering, and in particular relates to a device and a method for suppressing vortex-induced vibration of a water riser by utilizing the upback energy of drilling fluid. Background technique [0002] In offshore oil drilling, the riser is one of the core components. It constructs the transmission channel between the drilling platform and the underwater wellhead. Exercise etc. play an important role. The riser is subject to complex marine environmental loads such as wind, waves, and currents, and is prone to fatigue failure. Among them, the vortex-induced vibration of the pipe body caused by the flow around the wave flow is the main cause of the fatigue damage of the riser. Vortex-induced vibration is a complex fluid-solid coupling problem. Especially when the frequency of vortex shedding is close to the natural frequency of the pipe string, it will also cause vortex-induced resona...

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): E21B17/10
CPCE21B17/10
Inventor 朱红钧孙兆鑫汤连东牛义康
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