Pile shoe structure for retractable drilling platforms

A technology for drilling platforms and pile boots, which is applied in basic structure engineering, sheet pile walls, buildings, etc., can solve problems such as difficulties, and achieve the effect of solving piercing problems, solving pile pulling difficulties, and high dynamism.

Inactive Publication Date: 2011-10-26
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF5 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a retractable drilling platform pile shoe structure to solve the problems existing in the operation proce

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
  • Pile shoe structure for retractable drilling platforms
  • Pile shoe structure for retractable drilling platforms
  • Pile shoe structure for retractable drilling platforms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] There are two major risks of piercing and pile pulling difficulties in the essential pile insertion and extraction links in the jack-up drilling platform's in-place and evacuation operations, and the two risks of piercing and pile extraction are exactly contradictory. When designing the spud can of a jack-up drilling platform, it is necessary to consider the requirement that the bearing capacity of the spud can be as large as possible, but also meet the requirement that the pile pullout resistance be as small as possible. If the effective cross-sectional area of ​​the spud can is increased, its bearing capacity will inevitably increase, but the resistance when pulling out the pile will also inevitably increase. This is the focus of contradiction between the two links of pile insertion and pile extraction. The starting point of the design idea of ​​the retractable drilling platform spud can structure device is based on this contradiction focus. If the retractable drilli...

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 a pile shoe structure for retractable drilling platforms. The structure comprises a top sealing plate, a bottom sealing plate, a retractable steel skeleton, a movable shoe side-wall shell and a hydraulic device, wherein the top sealing plate is an upper foxed plate arranged below a pile leg, and the bottom sealing plate is a lower fixed plate which is arranged at the lower part of a pile shoe and formed into a pile tip of the pile shoe; the steel skeleton is arranged below the top sealing plate, and in a retractable cage structure consisting of a plurality of steel members; the movable shoe side-wall shell can cooperate with the retractable formation of the steel skeleton of the pole shoe so as to increase the pressure bearing area of the pile shoe and prevent soil bodies around the pile shoe from entering the pile shoe; and a control system of the hydraulic device is arranged at a ballasting control center of a platform, and used for transmitting a shoe retraction instruction to the hydraulic device through hydraulic pipelines laid along the pile leg, then realizing the automatic retraction of the steel skeleton through cooperating with the ballasting control of the platform. By using the pile shoe structure disclosed by the invention, the problem of puncturing existing in the process of carrying out pile driving on a self-elevating drilling platform and the problem of difficult pile extracting existing in the process of withdrawing the self-elevating drilling platform are solved.

Description

technical field [0001] The invention relates to technologies related to oil exploitation, in particular to a retractable drilling platform spud shoe applied to the pile leg structure of a jack-up drilling platform. Background technique [0002] In pile leg structures whose bearing capacity is dominated by pile tip resistance (such as truss structure legs), spud cans with a large cross-sectional area are widely used at the bottom of the pile legs to increase the pile tip resistance and ensure that the pile The requirements of the ultimate bearing capacity of the legs. The frictional resistance of the pile side increases continuously with the increase of the depth of the pile into the mud (theoretically, it is the accumulation of segmental integrals), and there is no risk of piercing. The pile tip resistance is different from the pile side friction resistance. The pile tip resistance depends on the stratum corresponding to the depth of the spud can. With the layered distribut...

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): E02D5/72
Inventor 杨进徐国贤姜伟刘书杰谢梅波汪顺文黄熠
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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