天钢80ksi钢级抗硫抗挤毁石油套管钢的生产实践

为满足市场对高强度高抗挤毁套管的需求,天津钢铁集团有限公司开发了80ksi钢级抗硫抗挤毁石油套管钢27CrMo圆坯。介绍了该石油套管钢的生产工艺路线,通过对钢中的磷硫含量、全氧含量、五害元素及气体含量的控制,使圆坯产品实现了生产。经检验,成品石油套管的抗硫性能和抗挤毁性能完全满足相关标准的要求,化学成分稳定,铸坯质量良好。     

抗挤毁性能分析及高抗挤毁P110套管的设计

对包钢P110钢级石油套管抗挤毁性能及其主要影响因素(套管抗挤毁性能、材料力学性能、残余应力、尺寸精度等)进行了试验研究与分析.并针对正在开发的包钢P110钢级高抗挤毁石油套管BT-110T的各项主要技术指标进行了设计,明确了BT-110T的开发方向.     

TP150TT高强度高韧性抗挤毁套管研制开发

介绍了①177．8×12．65mm规格深井用高强度高韧性TP150Tr抗挤毁套管的开发情况。研究了与高强度高韧性抗挤毁套管生产相关的纯净钢冶炼技术、高精度无缝管轧制技术、高韧性套管材料的热处理技术及强韧化机理。该产品的屈服强度达到1100MPa以上,同时横向冲击功在120—140J,纵向冲击功140～160J,管体实际抗挤毁强度在20000Psi以上。     

经济型抗CO2腐蚀油套管用低合金钢的研究

在油套管CO2腐蚀失效分析基础上,研究了不同成分和组织钢在模拟不同油田采出液介质中的抗CO2腐蚀性能和腐蚀行为.针对油田特定的腐蚀环境,优选出抗CO2、Cl-腐蚀性能良好的经济型低合金钢种.     

中原油田盐层段用TP155V钢级特殊规格石油套管的开发

在分析中原油田地质特点及前期套管使用情况的基础上,设计了中原油田盐层段用TP155钢级特殊规格石油套管.通过控制屈服强度、残余应力及几何尺寸等影响套管抗挤毁性能的因素,在大幅度减少套管壁厚的情况下,确保了超高的抗挤毁强度.检验结果表明,生产的TP155V套管各项性能指标能够满足设计要求,套管尺寸精度高,残余应力低,抗挤毁性能高,能够完全满足中原油田盐层段使用要求.     

低碳-低锰系油井套管用钢抗硫化氢应力腐蚀开裂性能

 对621MPa(90ksi)级抗硫化氢腐蚀油井套管用钢的合金设计、热处理工艺以及组织和性能关系进行了研究,分别设计了0.08C-0.8Mn和0.20C-0.8Mn 2种低碳-低锰试验钢,并重点研究了经调质处理后试验钢的位错、析出物和碳化物对SSCC性能的影响。研究结果表明,采用低碳-低锰,结合Nb、V、Ti和B的微合金设计,通过适当的调质热处理工艺可以获得优良的力学性能、韧性和抗硫化氢应力腐蚀开裂性能,满足相关标准的要求。研究结果还表明,不共平面的位错群、细小的析出物以及弥散的高球化率碳化物,可以使钢具有很好的抗硫化氢应力腐蚀开裂性能。     

套管的残余应力对抗挤毁强度的影响

运用弹性力学理论,建立了石油套管的力学模型.通过理论和有限元计算,得到了残余应力与石油套管的抗挤毁强度间的关系.研究表明,残余应力在很大程度上影响着石油套管的抗挤毁强度.为提高石油套管的使用寿命,必须根据管体受力状态使残余应力最佳化,以提高套管的抗挤毁强度.     

超高强度φ141.3×11.3mm钢管产品的开发

由于岩盐层的蠕动,井壁失稳易造成套管失效,会给油田勘探和开采工作带来巨大损失.东濮凹陷地区岩层发育的特征要求所用套管的抗挤强度达到168 MPa,以适应苛刻的地质环境.实验室开发出160 kpsi钢级高强度高韧性的新材料,进而制造出φ141.3×11.3 mm非API规格、抗挤强度超过170 MPa的抗挤套管,并成功应用于中原油田.与原来使用的φ152.4×16.9 mm厚壁管相比,新开发的套管不仅能够提高生产安全系数,而且还能给油田带来巨大的经济效益.     

P110抗挤毁套管材料成分的设计

从材料的设计原则入手,通过对合金元素作用的分析,拟定两种材料的设计思路,通过实验室试验和工业性试验,最终确定了生产P110抗挤毁套管的材料的化学成分.经过批量生产验证,确定的材料生产的抗挤毁套管,质量优良,完全满足标准和用户要求.     

宝钢抗腐蚀系列油井管的开发

结合油气田硫化氢、二氧化碳及氯离子等的腐蚀特点,针对石油天然气工业开采开发过程出现的油井管腐蚀类型和危害,系统介绍了宝钢一般抗硫管、高抗硫管、抗硫钻杆、低Cr经济型抗二氧化碳和硫化氢腐蚀管、高抗二氧化碳的13Cr油套管和Ni基合金油套管系列产品的研发及应用情况,并结合用户的需求与宝钢钢管品种发展的战略,对下一步宝钢抗腐蚀油井管的研究开发提出了设想.     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.