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&lt;tr&gt; &lt;td&gt; <pre>&lt;br&gt;High resistance to collapse destroyed the oil casing of the trial&lt;br&gt;</pre> &lt;/td&gt; &lt;/tr&gt;<br />&lt;tr&gt; &lt;td&gt; <pre>&lt;br&gt;The trial destroyed the oil casing steel pipe August 2004 33 4 30 arrows made two actual production results of inspection results are as follows. The first produce O177.80mmxl0.36mmTP110TT2.1 refined chemical composition of oil casing total 78Ot (furnace), the relevant performance of the inspection finished chemical composition shown in Table 4. Table 4 refined chemical composition (wt)% 2.2 Steel Pipe size randomly selected lO steel pipe outside diameter and wall thickness, the results are shown in Table 5. 2.3 residual stress using the slotting method to measure residual stress. The formula is as follows r = ES (1 [Do-l [Df in), (1-v) 17 E = 20.6x10MPa; S - average wall thickness. ram; D0 - slotted the average before the pipe diameter, mm; Df in - slotted the average pipe diameter,[http://www.abercrombiehamburg-fitch.com abercrombie hamburg], ram; - Poisson number of 0.30. Each furnace to take a long 600mm residual stress specimen, the measurements and the calculated results shown in Table 6. 2.4 tensile steel tube, steel pipe and impact test results of tensile and impact test results are shown in Table 7. 2.5 Steel Pipe Steel test results steel metallographic examination results in Table 8. 2.6 anti-collapse (crushing) the value of anti-collapsing (crushing) values ​​are shown in Table 9. Table 5 Pipe Size Chart 6 surface residual stress values ​​in Table 7-tensile steel and impact test results Note: The impact of the test sample size 10minx7.5mmx55mm test temperature O ℃. STEELPIPEAug. 2004, Vo1.33, No. 4 new crystal development, metallographic test results in Table 9 Table 8 steel pipe, anti-collapse (crushing) test values ​​Note: the agreement to ensure that value is 8O. 67MPa (11700psi); AP1Bul5C2 recommended values ​​58.81MPa (8530psi). 3 Conclusions (1) furnace casing strength design requirements,[http://www.abercrombiedusseldorf-de.com abercrombie online shop], and yield strength close to the upper limit of the design specifications, elongation more than 50 percent higher than the design specifications. (2) anti-collapsing strength test showed that the batch of casing collapse performance fully met the design targets, far more than the same size ● Information Management APIBul5C2 recommended values ​​(mean beyond APIBul5C2 recommended value of 40% or more ). (3) the impact absorbed energy of an average of about twice higher than the design specifications, that batch of casing in the same time with high-intensity, high toughness, strength and toughness with a reasonable, thus ensuring that the casing in the well completion perforation performance is excellent. (4) special residual stress control process measures, so that the casing has a lower distribution of residual stress. Ensure the stability of the high resistance to collapse performance (5) to take full advantage of the characteristics of the steel containing Cr, Mo,[http://www.abercrombiemunchende.net abercrombie deutschland], V and other elements, so that the product has the characteristics of anti-deep well high temperature in the underground service environment, able to maintain the required strength, toughness and resistance to collapse performance. 4 refer to the literature 1 Zhong Qianxia, ​​Wang Yan. Domestic and international oil well pipe production technology [C]. Beijing: Iron &amp; Steel Research Institute, 1993.2APISpec5CT [S]. 3APIBul5C2 [S]. (Received El period&nbsp;:2004-03-29) 1 May 2004,[http://www.abercrombie-fitch-madrid.com abercrombie españa], Russia's import and export of ferrous metallurgy products, according to Russian customs statistics,[http://www.abercrombiehamburg-fitch.com abercrombie hamburg], exports of steel products in 2004 to ~ 5,[http://www.abercrombiemunchende.net abercrombie deutschland], q copies of Russian total amount over the previous year grew by 73 percent, to $ 5.51 billion (previous year same period Russian exports of steel products amounted to $ 3.179 billion). L ~ 5, q copies of the Russian pig iron exports in 2004 was 220 ~-t,[http://www.abercrombiemunchende.net abercrombie deutschland], amounted to $ 441.5 million; carbon steel semi-finished products export volume 4817Yt, amounted to $ 1,390,[http://www.abercrombie-fitch-madrid.com abercrombie barcelona],000,000; carbon steel flat products export volume 456 ~-t, amounted to $ l8.3 billion U.S. dollars; ferroalloy exports 25.577Yt, amounted to $ 261.6 million. In addition, 2004 l ~ in May Russia also export commodities of iron ore and iron ore concentrate a total of 675 ~-t, the amount of $ 149,500,[http://www.abercrombiehamburg-fitch.com abercrombie],000: 26,390,[http://www.abercrombiehamburg-fitch.com abercrombie],000 tons of coal, the amount of $ 927,300,000; 1.45 million tons of coke, The amount of 1.7l4 billion U.S. dollars. 2004 l ~ in May Russian imports of steel products is still mainly steel pipe, the volume of imports reached 39.91 ~-t, the amount of $ 299,600,000, of which the number of steel pipe imports from CIS countries to reach 214 600 t the amount of $ 126,200,000. Trial steel pipe (Panzhihua Iron and Steel Group Chengdu Iron &amp; Steel, Co., Ltd. Du rhinoceros benefits) Li Qin: high resistance to collapsing oil casing August 2004, Volume 33, 4&lt;br&gt;</pre> &lt;/td&gt; &lt;/tr&gt;<br />相关的主题文章：<br /> <ul><br /> <br /> </ul> <p>相关的主题文章： </p> <ul> <li><a href="http://www.artisansdrink.com/activity/p/175280/" class="external text" rel="nofollow">China's steel production in January-September 2008 , operating conditions and to face the problem -</a></li> <li><a href="http://nycpeteacher.com/activity/p/61311/" class="external text" rel="nofollow">Car parts processing _463</a></li> <li><a href="http://mypetsbook.net/activity/p/689051/" class="external text" rel="nofollow">Temperature measurement sensors and temperature temperature control instrumentation _49</a></li> </ul>