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Improved landing pipe

A technology for landing pipes and sections, applied in the direction of drill pipes, casings, drill pipes, etc., can solve problems such as life difficulties, and achieve the effects of less obstruction, lower pipe weight, and less hydraulic disturbance

Active Publication Date: 2020-07-24
GRANT PRIDECO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, it is difficult to manufacture drill string or landing string components with suitably long part life because the components in the drill string or landing string must be able to withstand high tensile and compressive loads, bend and rotate under stress, and Used in situations of frequent slip pinching, which causes pinch stress, cogging, and potential crushing of drillstring or landed tubular components

Method used

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  • Improved landing pipe
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Embodiment Construction

[0023] The present invention includes landing tubes designed to minimize weight. The present invention proposes a favorable trade-off between wall thickness and overall weight, resulting in improved resistance of ground pipes to crushing, tensile yielding, and fatigue while still controlling weight.

[0024] see figure 1 , an exemplary ground pipe includes an upper tool coupling (1), a main section, and a lower tool coupling (3), the main section including a first section (2a) (where the slips are intended to engage the ground pipe ), and a second section (2b) having a low tube wall thickness compared with the main section to reduce weight. The tool coupling may be of the pin and box type and be threaded to allow the mating of multiple landing pipes to form a drill string or landing pipe string.

[0025] In a preferred embodiment, the material used for the landing tube is a high strength low alloy (HSLA) material, such as 4100 or 4300 series alloy steel.

[0026] Exemplary ...

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PUM

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Abstract

A landing pipe is disclosed. The pipe includes a first tool joint (1), a second tool joint (3), and a main section (2) extending from the first tool joint (1) to the second tool joint (3), the main section having a first portion (2a) and a second portion (2b). The first tool joint outer diameter is greater than both the main section first portion outer diameter and the main section second portionouter diameter. The main section first portion wall thickness is greater than the main section second portion wall thickness, and the main section second portion has a length range of 40% to 85% of anoverall length of the landing pipe.

Description

[0001] This application is a divisional application of an invention patent application with an application date of November 27, 2013, an application number of 201380059738.9, and an invention title of "improved landing tube". technical field [0002] The present invention relates to tubular components for drilling and operating hydrocarbon wells and placing heavy loads in wells or on or below the seabed. The term "drill string or landing string component" means any element of substantially tubular shape intended to be connected to another element of the same or different type so as to be constructed for use in Tubular strings for drilling or performing operations in hydrocarbon oil wells or for placing heavy loads on or below the well or seabed. The invention finds particular application in other components used in drill strings or landing pipes, such as drill pipe, heavy drill pipe, drill collars, and tools called tools for connecting drill pipe, heavy drill pipe, and landing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B17/042
CPCE21B17/00
Inventor H.扬J.弗兰奇C.麦克勒穆里K.戈德克S.格兰杰
Owner GRANT PRIDECO LP