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Economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe and manufacturing method thereof

A technology for gathering and transportation pipelines and manufacturing methods, which is applied in the field of seamless gathering and transportation pipelines and its manufacturing, can solve the problems of lack of corrosion resistance to sulfate-reducing bacteria and high oil field costs, and achieve excellent corrosion resistance to sulfate-reducing bacteria , low cost, good strength and toughness effect

Active Publication Date: 2019-11-26
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gathering line pipe has a yield strength of 350MPa~450MPa and can be used in the acidic environment of hydrogen sulfide, but it does not have the corrosion resistance of sulfate reducing bacteria
[0005] In addition, the CO-resistant 2 -H 2 S-SRB corroded seamless line pipe, free of CO 2 and H 2 The oil field cost of S working condition is higher

Method used

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  • Economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe and manufacturing method thereof
  • Economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe and manufacturing method thereof
  • Economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-3

[0037] Table 1 lists the mass percent of each chemical element in the economical sulfate-reducing bacteria corrosion-resistant seamless gathering and transportation line pipes of Examples 1-6 and Comparative Examples 1-3.

[0038] Table 1. (wt%, the balance is Fe and unavoidable impurities other than P and S)

[0039] serial number C Si mn P S Cu Ni V RE Example 1 0.12 0.48 1.17 0.012 0.003 1.81 1.20 0.23 0.07 Example 2 0.10 0.18 0.15 0.018 0.003 0.23 0.88 0.22 0.09 Example 3 0.10 0.47 0.78 0.015 0.004 0.88 1.39 0.05 0.10 Example 4 0.07 0.21 1.01 0.014 0.002 0.64 0.91 0.06 0.08 Example 5 0.12 0.29 0.76 0.013 0.002 1.31 0.82 0.27 0.06 Example 6 0.07 0.19 1.25 0.019 0.003 0.94 0.22 0.22 0.09 Comparative example 1 0.05 0.18 0.6 0.015 0.002 0.06

0.9 0.05 0.08 Comparative example 2 0.25

0.28 0.9 0.015 0.002 0.8 0.8 0.22 0.05 Comparative e...

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Abstract

The invention discloses an economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe. The chemical elements of the economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe comprise, by mass, 0.05%-0.15% of C, 0.10%-0.5% of Si, 0.10%-1.5% of Mn, 0.15%-2.0% of Cu, 0.1%-1.5% of Ni, 0.02%-0.3% of V, 0.05%-0.1% of RE and the balance Fe and other unavoidable impurities. The invention further discloses a manufacturing method of the economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe. The manufacturing method comprises the steps that (1), a pipe blank is manufactured; (2), the pipe blank is manufactured into a pierced billet; and (3), after the manufactured pierced billet is heated to 900-960 DEG C, heat preservation is conducted for a certain time according to the wall thickness of the pierced billet, and then air cooling is conducted. The economical sulfate reducing bacterium corrosion resisting seamless gathering and transporting pipeline pipe is low in cost, has the good strength and toughness and has the excellent sulfate reducingbacterium corrosion resistance.

Description

technical field [0001] The invention relates to a gathering line pipe and a manufacturing method thereof, in particular to a seamless gathering line pipe and a manufacturing method thereof. Background technique [0002] Gathering pipelines are pipelines used to connect oil and gas wells and comprehensive oil and gas treatment devices. They transport oil and gas that have not undergone pretreatments such as dehydration, desalination, and desulfurization. The service conditions of gathering and transportation pipelines are relatively harsh. In addition, with the deepening of oil and gas field exploitation, the corrosion and perforation of gathering and transportation pipelines caused by the increase of water content and the corrosion of sulfate reducing bacteria (SRB) are becoming more and more frequent. In recent years, frequent leakage accidents of gathering pipelines caused by sulfate-reducing bacteria corrosion have brought great economic losses and environmental pressures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/16C22C38/08C22C38/12B21C37/06C21D9/08
CPCB21C37/06C21D9/08C22C38/005C22C38/02C22C38/04C22C38/08C22C38/12C22C38/16
Inventor 齐亚猛刘耀恒张忠铧
Owner BAOSHAN IRON & STEEL CO LTD
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