膨胀管护壁工艺在四川试验成功

<正>[本刊讯]2014年11月2日,在四川宣汉县煤炭普查TZC03钻场ZK3-1地质钻探孔内,采用勘探技术研究所研发的膨胀管护壁工艺,成功解决了孔内漏失地层的钻进问题。在ZK3-1孔130m深积岩地层处,发现长度为2m左右的漏失地层,通过查看岩芯及钻孔结构,制定了膨胀管堵漏方案,定位扩孔后下入6m长膨胀管,然后裸孔膨胀护壁,膨胀管膨胀后内径大于78mm,护壁完成后起下钻正常,钻进检验锚固结     

复杂地层深孔钻探泥浆护壁技术探讨与实践

深部找矿勘探给钻探技术提出了更高的要求。钻孔越深,施工周期越长,孔内往往越复杂,施工难度越大。在复杂地层进行深孔钻探更是如此,护壁技术显得尤为重要。结合近年来进行深孔钻探所遇到的问题,对复杂地层深孔钻进泥浆护壁技术进行了较深入的探讨,并在生产实践中对PHP泥浆和新型LBM泥浆进行了试验应用,取得了较好的效果,对深孔钻探施工具有一定的借鉴意义。     

小口径膨胀波纹管护壁技术在四川煤炭普查ZK3-1孔的应用

膨胀波纹管技术在国内外石油钻井领域的应用已经颇有成效,但是针对地质钻探领域的小口径膨胀管的研究却成效甚微。为此专门研发了针对地质钻探行业的小口径膨胀管护壁技术。该技术成功应用于四川煤炭普查ZK3-1钻孔封堵漏失地层,护壁后正常钻进至终孔。此次小口径膨胀波纹管的成功应用,为地质钻探行业的事故处理提供了新方向,填补了我国在小口径膨胀管技术领域的空白。     

丰山铜矿复杂地层钻进护壁技术

通过对丰山铜矿复杂地层全面的分析，总结过去处理复杂地层钻探护壁经验，摸索出一整套完善的护壁技术，较好地解决了丰山矿区复杂地层钻进护壁技术，极大地提高了钻进效率。     

跟管钻进下套管技术在大洋钻探中的应用

大洋钻探通常采用无隔水管开路钻进,在松散破碎地层常因孔壁失稳导致孔内事故,最理想的护壁方式是下套管将不稳定地层封隔开。传统下套管方法程序复杂,作业时间长,易发生缩径、塌孔,套管不能顺利下入到预定位置,施工风险大、成本高。本文介绍了一种跟管钻进下套管技术,利用套管下扩孔器、井下动力钻具、套管送入工具等配套设备,实现钻进和下套管工序"合二为一",简化了施工程序,可显著节省施工时间,解决了深海无隔水管钻进复杂地层下套管作业困难、施工风险大、成本高等技术难题,为实现海洋深部钻探取心目标提供了技术支持。     

复杂地层金刚石取心跟管钻进技术

介绍了一种冲击式取心跟管钻进技术.采用组合钻具进行跟管钻进,通过随钻跟入的套管保护孔壁,解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题.组合钻具由扩孔张敛式跟管钻具、液动冲击器和取心工具3部分组成,适用于长孔段复杂地层岩心钻探.     

用岩样浸泡方法选配复杂地层钻进冲洗液

在复杂地层中进行钻探施工,要配制不同的冲洗液,确保复杂地层中钻进的需要。达到护壁、携带岩屑、冷却钻头、润滑钻具,减少孔内阻力,提高生产效率的目的。几年来,我们对几个不同的矿区复杂地层钻进中的冲洗液进行了优选配方,用岩样浸泡方法来观察冲洗液有否适合该地层钻进要求。实践证明,这种选配冲洗液的方法比较好,并取得了初步成     

阳山矿区严重漏失垮塌地层钻进工艺及工程实践

严重漏失、垮塌地层快速钻进工艺的研究与应用是当前固体矿产勘查地质岩心钻探亟需解决的问题之一。文章结合甘肃阳山金矿钻探工程实践,针对长孔段的严重漏失、垮塌地层,总结了一套适用于该矿区快速勘探的绳索取心钻进和全面钻进、顶漏钻进工艺,采用水泥临时封堵、套管封堵、扩孔、跟管等方式进行封堵的钻进方法,分析了其应用效果,提出了在该地层钻进的认识与思考,以期为同类型地层钻探提供参考。     

皖煤田超厚度第四系钻进与护壁技术

在皖煤田钻探施工中,由于第四系厚度大,遇复杂情况,难以采取下置套管隔离的方法处理,全孔均采用裸眼钻进.针对该类地层复杂,钻进中常有漏水、超径、缩径、掉块等现象发生,容易造成卡钻、埋钻等孔内事故,选择了合理的钻进工艺以及适应该类地层钻进的冲洗液护壁,保持了孔壁稳定,孔内安全,大大减少孔内事故,降低施工成本,保证工程质量,取得了较好的效果.     

PAM泥浆在水文钻探中的使用体会

在水文地质钻探中使用泥浆，过去水文地质规范有所限制。尤其不许在基岩破碎带含水层和断裂、溶洞等地层，用泥浆护壁钻进。如1982年我队在某地F_5断裂上施工的1~#孔，因地层极为复杂又不许使用泥浆钻进，免强维持到孔深107米处（即断裂带），孔内严重坍塌掉块，经跟管钻进和其它措施反复处理无效，最后被迫提前终孔。83年，为进一步探明该地区地下热储，在同一F_5断裂上施工5~#钻孔。经批准使用PAM泥浆护壁钻进，有效地控制了孔内大量掉块卡钻和蹩车，抑制了断裂     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586