| 输气北干线沿线土壤理化性质的概率分布模型 |
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| 引用本文： | 李大全,姚安林,蒋宏业,李又绿,姜力,王飞.输气北干线沿线土壤理化性质的概率分布模型[J].西南石油大学学报（自然科学版）,2005,27(1):86-89. |
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| 作者姓名： | 李大全 姚安林 蒋宏业 李又绿 姜力 王飞 |
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| 作者单位： | 1.西南石油学院石油工程学院,四川 成都 610500;2.中油股份西南油气田分公司 |
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| 摘 要： | 通过对输气北干线沿线地区土壤主要理化性质指标进行测定所取得的大量试验数据，应用概率统计理论进行统计分析，找出了北干线沿线土壤理化性质指标的分布规律；然后采用最小方差准则对分布规律图象进行回归处理，得出各项理化性质指标分布的概率密度函数形式，以此建立了输气北干线沿线土壤理化性质的概率分布模型。同时在一定的置信区间范围内，应用土壤腐蚀性的单因素评价准则对输气北干线沿线土壤腐蚀性作出了评判。此外，利用这些概率分布模型还能够计算输气北干线所经地区不同腐蚀性土壤区域各自出现的概率，以及可能存在的最大土壤腐蚀性等工程信息。
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| 关 键 词： | 腐蚀 土壤理化性质 概率分布模型 回归曲线 |
| 收稿时间： | 2003-12-22 |
Models of Probability Distribution of The Soil Physics and Chemical Properties of the Region Along the North Trunk of Gas Transmission |
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| LI Da-quan YAO An-lin JIANG Hong-ye et al.Models of Probability Distribution of The Soil Physics and Chemical Properties of the Region Along the North Trunk of Gas Transmission[J].Journal of Southwest Petroleum University(Seience & Technology Edition),2005,27(1):86-89. |
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| Authors: | LI Da-quan YAO An-lin JIANG Hong-ye |
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| Institution: | Southwest Petroleum Institute, Chengdu Sichuan 610500, China |
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| Abstract: | The state of carbon dioxide and its effect on corrosion of pipe string for the oil and gas well at high temperature and pressure were theoretically analysed. A new theoretical conception was presented, in which the carbon dioxide mole concentration in the system and its distribution coefficient in the medium of oil and water in the condition of total pressure were defined to describe corrosion purarox te deep stratum and pressure funnel in pipe string when carbon dioxide is in the supercritical fluid state. |
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| Keywords: | CO2 corrosion high pressure and temperature supercritical fluid CO2 corrosion film |
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