延长油田罗庞塬区水平井钻井液防塌技术研究

延长油田罗庞塬区块部分层段由于泥页岩、碳质泥岩和油页岩发育突出,在钻井施工中常出现定向托压、掉块普遍和地层垮塌严重等现象,针对这些技术难题进行了该区块钻井液体系研究,确定4%KCl、5%聚合醇和0.6%~0.8%SI-150作为抑制性防塌处理剂主体防塌,选择1%氧化沥青、3%超细碳酸钙(1%2000目+2%3000目)和1%弹性石墨作为封堵性防塌处理剂协助防塌,形成了适合延长油田罗庞塬区块防塌钻井液体系。该钻井液体系封堵性和抑制性良好,页岩滚动回收率保持在93%以上,极压润滑系数控制在0.07以下。该钻井液体系在罗平16井和蒲平48井2口水平井成功进行了现场应用,取得了良好效果。     

准噶尔盆地中部1区块防塌技术研究

以现有的防塌技术为依托,在分析和研究该区块已完成井坍塌掉块的基础上,重点研究该区块三工河组泥页岩防塌技术和钻井液的防塌技术,通过室内实验优选出磺化钻井液体系,结合沙11井、征11井防塌技术,从工程和钻井液两方面提出具体防塌措施,并在庄11井的现场应用,庄11井平均井径只有4.7%,已完成其他井最小为14.45%,防塌效果显著。该技术的成功应用,解决了长期困扰中部1区块钻井井壁易失稳的问题。     

神木双山区块窄密度窗口水平井钻井液技术

针对神木双山区块水平井钻井过程中泥页岩引起的水化分散、造浆、缩径、掉块和坍塌等井壁失稳以及该区块三开结构水平井"上漏下塌"的窄密度窗口安全钻进和储层保护等技术难题,开展了一系列室内试验研究,最终形成了强抑制复合盐聚合物防塌钻井液体系。室内评价结果表明,该钻井液体系抑制性强,岩屑一次回收率大于95%,二次回收率大于86%,岩芯线性膨胀量降低率高达70%,流变性和润滑性能良好,对岩芯伤害率为11.25%,有利于保护油气层。现场4口井的试验应用结果表明,该体系抑制性防塌能力强,润滑防卡效果好,易于发现油气显示,机械钻速高,和该区块前期开发的四开结构水平井相比,机械钻速提高40.9%,钻井周期缩短32%,电测一次成功率100%,很好地满足了该区块窄安全密度窗口三开结构水平井安全快速钻井施工的需求。     

垦东405-平1井钻井液技术

垦东405-平1井是由渤海钻井二公司施工的一口胜利油田沿海大位移延伸井,该井位垂比达到1:1.74,是胜利石油管理局位垂比最大的一口大位移井,并且是在浅地层施工,钻井液的优选优配是该井技术的关键.根据孤东地区的地层特点:一开配浆开钻;二开使用正电纳米抑制性钻井液;三开采用正电胶聚合物乳化润滑防塌钻井液,增强了钻井液润滑防塌性能.现场施工表明:该井所采用的钻井液体系润滑防塌能力好,携带能力强,流变参数合理,性能稳定,从而优质高效的完成了这口大位移井的施工.     

氯化钾钻井液体系在元坝气田陆相井段的应用

川东北工区元坝区块陆相地层钻井液施工主要存在以下难点:钻井液密度高、井眼大、参与循环钻井液量大、易发生井壁失稳、易漏、高压气层等,其中井壁失稳问题是多年来都未曾解决的难题之一,间接导致钻井周期长、机械钻速低。针对易发生井壁失稳的难题,学习邻区中江构造、高庙构造等区块防塌成功经验,优选了抑制剂和防塌封堵剂,形成了氯化钾防塌钻井液并在元坝多口井陆相地层得到成功应用。结果表明,90%的应用井无井壁失稳复杂情况发生,顺利钻穿陆相地层,缩短了钻井周期,提高了机械钻速。     

新型水基钻井液体系在页岩气钻井中应用探讨

目前中国页岩气水平井水平段钻井主要使用油基钻井液,但油基岩屑处理费用昂贵,急需开发和应用一种具有环境保护特性的高性能水基钻井液体系。通过室内实验,优选出适合于水基钻井液的封堵剂、降失水剂等主要处理剂,进而研制出了钾铵基聚磺成膜钻井液体系配方,并进行了抗温性、润滑性、防塌抑制性、封堵性、抗污染性性能评价实验。结果表明:钾铵基聚磺钻井液流变性能良好,抗温可达150℃;润滑性能优良,具有较好的抗盐、抗钙污染性能和防漏封堵性能,防塌抑制性强。     

塔河油田12区定向井钻井液技术

塔河油田12区是中石化西北油田分公司的主力开发区块之一,为了提高可采储量、单井采油率,在该区块所布的定向井逐步增多,这就对钻井施工过程中的钻井液技术提出了更高的要求。12区定向井钻井液施工的重难点是"上部地层防缩径,下部地层防塌、防卡和防漏",上部地层钻井液以控制流变性为主,下部地层钻井液以确保防塌能力、封堵能力和润滑能力为主,完井前以油气层保护为重点。通过对该区块定向井钻井液施工情况进行分析总结,提出了较为完善的钻井液施工方案。     

萍乡市向辉钻井助剂材料有限公司

<正>萍乡市向辉钻井助剂材料有限公司是集研发、生产、销售、技术服务为一体的钻井液添加剂专业公司。主要生产防塌、护壁、堵漏、润滑等二十几个产品,为油田、煤田、金属矿产、水文地热等地质钻探提供优质的钻井液添加剂,并有产品外销出口和国外应用经验。     

鸭西小井眼定向井钻井液技术

随着玉门油田勘探开发的深入,小井眼开窗侧钻井成为老井复苏的重要技术手段,鉴于小井眼开窗侧钻井井斜大、井眼小,一旦井下发生事故复杂,其处理难度大,因此对钻井液防塌、润滑、携岩等技术环节提出了更高的要求。依据小井眼定向井钻井的要求和玉门油田鸭西区块的地层特点,通过优选方案,解决了井壁失稳、润滑防卡、岩屑携带等一系列技术难题,较好地满足了钻井施工的各项要求。     

深层水平井双聚胺基钻井液技术研究与应用

针对大庆油田深层致密气埋藏深,储层砾岩、火山岩裂缝发育,水敏性强,钻井过程中易发生漏失、垮塌、缩径及高温钻井液性能变差等复杂,且深层水平井钻进会带来摩阻、携岩和储层污染及使用油基钻井液存在成本高、后期环保压力大等难题,在分析总结前人研究成果及经验基础上,从致密气藏地质特征及深层水平井钻井难点出发,明确了钻井液技术对策,通过开展聚胺和聚醚多元醇"双聚"抑制、封堵防塌剂的研究,配合自主研制的新型高效随钻封堵材料,研发出一套适合于深层致密气藏水平井施工的双聚胺基钻井液技术。室内研究及现场应用表明,该钻井液具有较强的封堵防塌、井眼清洁和润滑防卡能力,抗温达180℃以上,有效地解决了深层水平井漏失、垮塌、携屑、润滑问题和储层保护问题,保证了深层水平井的顺利施工,创造了大庆油田深层水平井钻井周期最短(109d),井深最深(5048 m),水平段最长(969.22 m),井底温度最高(180℃)等几项新纪录,完全满足了徐家围子地区深层致密气藏的钻探需求,为深层水平井安全、快速、高效钻井提供了技术保障。     

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     

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     

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     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。