Manufacturing method of hook body of large hook for polar region drilling machine

A manufacturing method and technology of a manufacturing method, applied in the direction of manufacturing tools, drill pipes, drill pipes, etc., can solve the problems of affecting quality, poor reliability, and failure to reach, and achieve the effect of economy, simplicity, and improvement of reliability

Active Publication Date: 2014-08-13
RG PETRO MACHINERY GROUP
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are two disadvantages in the hook body of the casting structure. One is that the impact energy can only reach -45°C required by GB/T19190 and API 8C specifications, but the impact energy at -60°C can hardly be reached, and the performance stability is poor; the other is that The casting itself has a high probability of defects, magnetic particle flaw detection and ultrasonic flaw detection are often unqualified, the scrap rate is high, the pass rate is only 30-60%, and the reliability is poor
[0009] Welded structure, the weld becomes the weak link, the heat-affected zone and the weld cannot ...

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
  • Manufacturing method of hook body of large hook for polar region drilling machine
  • Manufacturing method of hook body of large hook for polar region drilling machine
  • Manufacturing method of hook body of large hook for polar region drilling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present invention 1: the manufacture method of the large hook hook body of the 3000-meter polar drilling rig adopts the following manufacture method:

[0035] ①.Description of design blanking: rated load 2250KN, minimum service temperature -60℃, after design calculation, the shape is shown in figure 1 , plate thickness 160mm, inner diameter of hook body pin hole 100mm, auxiliary hook square pin hole 100×180mm, safety factor 2.80, material 35CrMoA, mechanical performance requirements: σ 0.2 ≥590MPa, σ b ≥780MPa, δ 5 ≥15%, ψ≥30%, Akv (-20°C) ≥42J, Akv (-60°C) ≥27J, conduct magnetic particle inspection and ultrasonic flaw detection according to API Specification 8C.

[0036] ②. Forging process: blanking, Ф500mm 35CrMoA round steel, length 1000mm. Oil furnace heating is adopted, and the furnace loading temperature is lower than 600°C. The heating temperature and time must not only ensure that the forgings do not overheat or overburn, but also ensure the deformation ...

Embodiment 2

[0045] The present invention 2: the manufacture method of the big hook hook body of 2000 meters polar drilling rig, adopts following manufacture method:

[0046] ①.Description of design blanking: the rated load is 1350KN, the minimum service temperature is -60℃, after design calculation, the shape is shown in figure 1, plate thickness 140mm, inner diameter of hook body pin hole 90mm, auxiliary hook square pin hole 80Χ160mm, safety factor 3.0, material 35CrMoA, mechanical performance requirements: σ 0.2 ≥590MPa, σ b ≥780MPa, δ 5 ≥15%, ψ≥30%, Akv (-20°C) ≥42J, Akv (-60°C) ≥27J, conduct magnetic particle inspection and ultrasonic flaw detection according to API Specification 8C.

[0047] ②. Forging process: blanking, Ф450mm 35CrMoA round steel, length 985mm. Oil furnace heating is adopted, and the furnace loading temperature is lower than 600°C. The heating temperature and time must not only ensure that the forgings do not overheat or overburn, but also ensure the deformation...

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 provides a manufacturing method of a hook body of a large hook for a polar region drilling machine. The manufacturing method adopts the process steps of design and blanking, forging, rough machining, heat treatment and finish machining, and the hook body is processed according to requirements of GB/T19190 and APISpec8C. The forging hook body processed by the manufacturing method adopts the integral forging design, the conventional material 35CrMoA and normalizing, tempering and subcritical quenching processes are adopted, and the intensity, the impact power in the polar low-temperature environment (-60 DEG C) and other mechanical properties of the hook body are ensured. The hook body of the large hook processed by the manufacturing method is applicable to petroleum drilling machines and workover rigs in polar low-temperature environment (-60 DEG C), the safety factor is guaranteed, and sufficient low-temperature impact toughness and polar low-temperature environment resistance performance is realized.

Description

technical field [0001] The invention relates to a method for manufacturing a hook body for a polar region (low temperature -60°C) drilling rig. The hook manufactured by the method is used to lift underground drill strings, drilling tools and other drilling rig devices and materials. Background technique [0002] The proven oil reserves in the Arctic region account for about 1 / 4 of the world's total. As the world's energy demand continues to grow, oil exploration, development, and oil production continue to shift to the polar environment. As an essential equipment, oil drilling rigs are required to be able to serve in the polar low temperature environment (-60°C). The hook body is a key component on the main load path, and its function is to bear the load of the drill string and drilling tools , requiring high reliability. The Chinese national standard GB / T19190 and the American Petroleum Institute API Specification 8C have put forward very high requirements for it. Not only...

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): B23P15/00C21D9/00
CPCB23P15/00C21D9/00E21B19/04
Inventor 赵旭平李廷哲张勇刘洪泽刘屹
Owner RG PETRO MACHINERY GROUP
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