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Economical Sulfate Reducing Bacteria Corrosion-resistant Seamless Gathering and Transportation Line Pipe and Manufacturing Method

The technology of a gathering pipeline and a manufacturing method, which is applied in the field of seamless gathering and transportation pipelines and their manufacturing, can solve the problems of high oilfield cost and lack of resistance to sulfate reducing bacteria corrosion, and achieve low cost and excellent sulfate resistance. The effect of reducing bacterial corrosion performance, good strength and toughness

Active Publication Date: 2021-07-16
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 Bacteria Corrosion-resistant Seamless Gathering and Transportation Line Pipe and Manufacturing Method
  • Economical Sulfate Reducing Bacteria Corrosion-resistant Seamless Gathering and Transportation Line Pipe and Manufacturing Method
  • Economical Sulfate Reducing Bacteria Corrosion-resistant Seamless Gathering and Transportation Line Pipe and Manufacturing Method

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 bacteria corrosion-resistant seamless gathering and transportation line pipe. : 0.15-2.0%, Ni: 0.1-1.5%, V: 0.02-0.3%, RE: 0.05-0.1%, and the balance is Fe and other unavoidable impurities. The invention also discloses a manufacturing method of the above-mentioned economical sulfate-reducing bacteria corrosion-resistant seamless gathering and transportation line pipe, which includes the steps of: (1) preparing the pipe blank; (2) making the pipe blank into a waste pipe; (3) manufacturing After heating the completed waste pipe to 900-960°C, according to the wall thickness of the waste pipe, keep it warm for a certain period of time and then air cool it. The economical sulfate-reducing bacteria corrosion-resistant seamless gathering and transportation line pipe of the invention has low cost, good strength and toughness, and excellent sulfate-reducing bacteria 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 Patents(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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