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    BG155P超高強(qiáng)度高韌性射孔槍管的研制及其微觀組織分析

    Development and Microstructure Analysis of BG155P Ultra-high Strength High Toughness Tube for Perforating Gun

    • 摘要: 根據(jù)深井、超深井用射孔槍技術(shù)特點(diǎn)對(duì)合金化技術(shù)和制造工藝進(jìn)行優(yōu)化，開(kāi)發(fā)出具有優(yōu)異強(qiáng)韌性的BG155P超高強(qiáng)度高韌性射孔槍管。檢測(cè)BG155P超高強(qiáng)度高韌性射孔槍管的各項(xiàng)力學(xué)性能，并進(jìn)行射孔試驗(yàn)；采用光學(xué)顯微鏡和電子背散射衍射等微觀分析手段，分析BG155P超高強(qiáng)度高韌性射孔槍管的微觀組織。試驗(yàn)結(jié)果表明：BG155P超高強(qiáng)度高韌性射孔槍管可以滿足200℃和200 MPa環(huán)境下射孔槍的使用要求；該射孔槍管管體的晶粒度達(dá)到10級(jí)以上，有效晶粒平均尺寸2.6 μm，細(xì)小的晶粒是保證其具有優(yōu)異強(qiáng)韌性的主要原因。

       

      Abstract: Alloying technique and manufacturing process are optimized basing on technical characteristics of perforating guns uesd in deep and extra-deep wells,and so the BG155P extra-high strength high toughness tube for perforating gun is developed.Mechanical properties of this type of tube are tested,and perforating tests are conducted.Microanalysis methods such as optical microscope(OM)and electron backscatter diffraction(EBSD)etc.are adopted to analyze the microstructure of the BG155P tube.The test results shows that the BG155P extra-high strength high toughness tube for perforating gun can meet the requirements of a perforating gun using in the environment of 200℃ and 200 MPa.The tube has a grain size above level 10,and an average effective grain size of 2.6 μm;and this type of fine grain is the main reason for its excellent strength and toughness.

       

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