打捞工艺在井下卡钻事故处理中的应用

针对复杂情况下卡钻事故的处理,逐步采用了强力起拔工艺、套铣打捞工艺以及磨铣松扣工艺处理卡钻事故。并利用扩孔钻头+母锥打捞处理卡钻事故过程中打捞钻杆发生的二次断裂事故,在将断裂的打捞钻杆套出后,利用磨铣钻头成功磨铣松扣被卡定向钻杆,回收大部分被卡定向钻杆以及断裂的打捞钻杆。保证了该孔的有效性,并为后续分支孔及钻孔的施工提供了必要条件。     

超长套铣筒在鄂尔多斯盆地铀矿钻探施工处理埋钻事故中的应用

在历年的钻探施工中,由于地层原因造成埋钻或处理烧钻、卡钻时间久衍生埋钻事故,使用常规的套铣方法处理,工人的劳动强度大,公锥等材料消耗多,并且成功率低,容易产生弃孔损失。本文介绍了使用超长套铣筒处理鄂尔多斯盆地铀矿钻探中埋钻等孔内事故的方法,可大幅度缩短处理事故的时间,降低工人的劳动强度,提高机台的本质安全度,降低报废钻孔的概率,为今后钻探施工中处理埋钻等孔内事故提供一种比较快速、安全的处理方法。     

定向钻进套铣打捞钻杆的设计

通过对常用定向钻进配套钻具打捞工艺的对比分析,明确了采用套铣打捞工艺处理煤矿井下近水平定向钻进中出现的塌孔、卡钻、埋钻等孔内事故的可行性与实用性。根据其工艺施工要求,结合煤矿井下近水平定向钻进系统配套钻具具体参数,研制了能够满足额定扭矩6000 N·m钻机使用要求的定向钻进套铣打捞钻杆。成庄矿的应用表明,采用套铣打捞工艺处理近水平定向钻进时孔内事故(塌孔、卡钻、埋钻等)可行性较强,且套铣打捞钻杆结构设计合理,能满足套铣打捞工艺的使用要求。     

汶川地震断裂带科学钻探项目WFSD-4S孔卡钻事故处理

汶川地震断裂带科学钻探项目WFSD-4S孔地层复杂,钻探施工难度大,孔内缩径、坍塌、掉块事故频发,给钻探施工带来了极大的困难。就WFSD-4S孔在孔深517 m发生的卡钻事故进行了详细的阐述,分析发生卡钻事故的原因及条件,采用了强力起拔、反钻杆、可退式打捞矛打捞、套铣等手段,最终成功处理该起卡钻事故。该起事故的经验,为同类事故的处理提供借鉴及参考。     

套铣打捞钻杆的研究及应用

通过对煤矿井下打捞工艺进行分析,明确了采用套铣打捞工艺处理塌孔、卡钻、埋钻等事故的可行性与实用性。根据套铣打捞工艺施工要求,结合定向钻机及配套钻具参数,设计了能够满足额定扭矩12 000 Nm钻机使用要求的φ102 mm套铣打捞钻杆。现场工业性试验表明,采用套铣打捞工艺处理近水平定向钻进时孔内事故(塌孔、卡钻、埋钻等)可行性较强,套铣打捞钻杆结构设计合理,能满足套铣打捞工艺的使用要求。     

强力起拔工艺在煤矿井下定向钻孔卡埋钻事故处理中的应用

近年来煤矿井下定向钻进技术发展迅速,随着钻孔深度的增加卡埋钻事故发生的概率也在增加.介绍了强力起拔处理卡埋钻事故的方法,结合实例介绍了强力起拔处理事故的工艺及相关参数.最后总结了采用强力起拔处理卡埋钻事故的相关事项,为类似事故处理提供借鉴.     

套铣打捞技术在矿井钻具断裂事故中的应用

随着煤矿井下定向钻进技术的推广,由塌孔引起的卡钻、埋钻等孔内事故也逐渐增多。对煤矿井下卡钻、埋钻等造成的钻具断裂事故的处理,目前使用较多的方法是套铣处理和公锥打捞。基于套铣打捞钻具的工艺原理,结合晋煤集团成庄矿53074和53072 2个钻场的事故情况,对事故原因进行了分析,介绍了整个套铣打捞的全部过程,均实现了螺杆钻具的成功打捞。     

套铣管技术在水文钻具事故处理中的应用

在峰峰集团梧桐庄煤矿地面注浆孔施工时,因在扫孔过程中操作不当,使粗径钻铤脱扣跑钻,造成脱扣钻铤被卡事故。事故发生后,虽然对钻铤脱扣事故钻具采取了相应的措施进行处理,但均未成功。后引用了石油专用套铣管技术进行事故的处理,取得了非常理想的效果。介绍了事故处理难点及套铣管处理技术措施。     

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.     

套铣处理钻铤卡钻事故过程和技术

介绍了新疆西北油田塔河区块TK1075X井钻铤发生卡钻及套铣处理卡钻事故的经过及处理情况,详述了爆炸松扣技术、反扣钻具套铣钻铤及倒扣打捞技术,用正扣钻具切割套铣扶正器及套铣钻铤技术、震击器配合卡瓦打捞筒震击解卡打捞落鱼技术等事故处理技术在该井的成功应用,为今后同类型复杂情况和事故处理提供了借鉴。     

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