丰卤1井堵漏及盐膏层钻井液技术

丰卤1井是位于邛崃市道佐乡万福村4社的一口非油气重点勘探井,该井设计井深5300m,完钻井深5345m,主要钻探目的是探明三叠系雷口坡组层位卤水实际含量。丰卤1井钻遇地层复杂,蓬莱镇组至遂宁组井段软泥岩地层易缩径、钻头易泥包、起下钻易遇阻,自流井组至须家河须一段同一裸眼段钻遇多套压力系统地层、且地层裂缝发育承压能力低,多次发生孔隙渗透性漏失甚至洞穴裂缝型大型漏失,防漏堵漏难度大,目的层存在高压盐水层和不同厚度的盐层、盐膏层,极易发生盐岩溶解、吸水膨胀垮塌、蠕变缩径,造成坍塌掉块和卡钻等事故,钻井液维护处理困难。丰卤1井二开采用空气泡沫钻井液转化为聚合物钻井液体系,三开井段采用聚磺钻井液体系,四开井段采用聚磺钻井液体系转化为NaCl盐水聚磺钻井液体系。针对钻井过程中出现的井下复杂情况和事故,不断优化钻井液性能,并采取相应的工程技术措施,确保了丰卤1井顺利钻达目的层。     

下扬子地区望江坳陷页岩气地质调查皖望地4井钻井技术

为查明下扬子地区望江坳陷白垩系-二叠系地层岩性和层序、验证地球物理信息、评价油气资源潜力,中国地质调查局部署了大口径页岩气地质调查井皖望地4井,完钻井深2503.9 m。针对钻遇地层多变、软硬互层、大段多层膏岩层等复杂情况,通过钻头适应性优化、钻具组合稳斜纠斜、稳定可靠的钻井液体系等钻探工艺技术的实施,实现防斜打直快速穿越,保证了岩心采取率,实现了钻井目的。该井钻井技术可为周边地区油气钻探提供有益经验。     

减振技术在博孜区块砾石层钻井的应用

库车山前博孜区块等地质条件极为复杂,存在大段含砾石地层,可钻性差,钻进过程中易憋跳钻、断钻具等复杂情况发生,通过对在砾石层钻具损坏因素分析,进行钻具组合优化、工具安装位置优化等技术研究,现场用于3口井,有效地保护钻井提速工具和钻头,延长了使用寿命,对于该区域砾石层等复杂地层钻井提速具有较好的借鉴意义。     

叶舞凹陷ZKX井深部盐层钻井液技术研究

叶舞凹陷ZKX井位于叶县盐田范围内,该钻探的目的是河南叶舞凹陷盐矿的普查,该井设计井深2630 m,在2000~2400 m连续取心,主要钻遇以泥页岩、砂岩、含盐膏层及盐岩为主的沉积岩地层,钻进过程中存在防塌、护心、井壁稳定等方面的问题和难点。针对ZKX井的钻井难点,在钻井液体系优化的基础上,根据不同地层分别采用了防塌钻井液体系、欠饱和盐水钻井液体系和饱和盐水钻井液体系,解决了水敏性泥页岩钻进的防塌及盐岩地层连续取心的钻井液技术难点,探索出了一套适用于盐膏层取心钻进的低成本钻井液技术思路。     

S/D-2井欠饱和盐水钻井液技术

S/D-2井在井深2480 m以后钻遇了大段复杂的盐膏层,由于盐的溶解而造成井径扩大及盐析而结晶造成卡钻。针对上述问题,应用了聚磺欠饱和盐水钻井液体系,解决了钻遇盐膏层后的井壁失稳、钻井液污染等技术问题。详细介绍了该井聚磺欠饱和盐水钻井液的应用技术。     

资阳1井钻井液技术

资阳1井是中石化西南油气田分公司部署在四川盆地川中隆起兴隆场鼻状构造顶部较低部位的一口海相预探井,以寒武系龙王庙组和震旦系灯影组二段为主要目的层,设计井深5383m,完钻井深5346m。该井钻至古老的震旦系地层,设计和实钻地层差别较大,地温梯度异常,达到2.5℃/100m,预计完钻井底温度达到170℃~190℃,分别在三叠系须家河组、寒武系筇竹寺组和寒武系麦地坪组钻遇大段页岩,龙王庙组和灯影组二段孔缝发育,雷口坡组和嘉陵江组有大段石膏层,嘉陵江组有盐层。经过室内大量实验,优选出适合本井的氯化钾聚磺钻井液体系,选用抗温、抗膏盐和防漏处理剂,成功穿过以上复杂层段。     

油田盐膏层钻井技术

分析了巨厚盐膏层在复杂的压力系统及高温高压下发生塑性蠕动、井径缩小，易发生埋钻、卡钻、下套管困难等严重复杂情况；探讨了盐膏层钻井有关承压堵漏、钻盐膏层的钻井液、钻盐膏层随钻扩孔、盐膏层井径稳态蠕变率测定工艺等问题。     

库车山前砾岩层钻井提速技术探索

库车山前砾岩层岩石可钻性差,钻井过程中引起钻具憋跳,导致稳定器磨损加速和钻铤的疲劳破坏,严重影响机械钻速和钻井周期。通过对库车山前砾石层空气钻井、涡轮+孕镶钻头、带减震器常规钻具的现场应用情况分析,得出前两种钻井技术在库车山前砾石层可大幅度提高砾岩层钻井速度,但仍具有一定的局限性。空气钻井在地层出水条件下,井壁失稳易引起事故复杂;涡轮+孕镶钻头钻具防斜效果欠佳,钻具磨损严重,钻速慢。随后对两口在砾石层应用液力推动器的钻井实例进行分析,得出此工具可有效延长钻头的使用寿命,提高机械钻速,同时可保护钻具。因此针对库车山前砾岩层的钻进,提出钻井提速措施:二开井段,在地层无出水条件下,首选空气钻井,反之,建议使用液力推力器;进入库车组,砾岩减少,井斜稳定,建议使用涡轮钻井技术;三开井段地层倾角趋于平缓,使用涡轮钻井技术,提高钻井机械钻速,同时带定向接头,控制井身质量。     

麦盖提区块钻井关键技术研究及应用

塔里木盆地麦盖提地区异常地应力发育、古近系盐膏层易蠕变挤毁套管、二叠系火山岩钻井速度慢、古生界地层岩性复杂钻头选型难、三开井眼井壁稳定性差、奥陶系裂缝性地层涌漏风险高,为此开展了断裂带异常地应力分布规律、井身结构优化、高效破岩工具研制、刀翼式孕镶钻头研发、井壁稳定高效钻井液、欠平衡钻井等关键技术研究,提出了非常规井身结构优化设计系列,研制了高效破岩工具和刀翼式孕镶金刚石钻头,研发了高效抑制性防塌钻井液体系。在此基础上形成了钻井提速配套技术系列,完钻井平均机械钻速提高17.89%,钻井周期缩短34.55%。     

塔河油田TK1105井盐膏层钻井液技术

塔河油田TK1105井阿克库勒凸起西南斜坡巴楚组含有大段盐膏层，盐膏层易塑性变形，并造成缩径卡钻，盐层的溶解易造成井径扩大和钻井液性能不稳定，盐泥页岩中的盐的溶解和泥页岩的水化分散作用易造成井壁不稳定。承压堵漏技术和欠饱和盐水钻井液体系解决了该井钻盐膏层的疑难问题，保证了该井的顺利施工。     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

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