孤岛油田注聚区低液井提液措施

1．注聚区低液量井原因造成注聚区油井低液量的原因很多，包括工艺选择的不合理，地层发育的差异，注采井网不完善以及生产管理不当等。     

农村农户储粮损失对比试验分析

农户储粮损失调查,对于推广科学储粮技术,保障国家粮食安全,具有重要的意义.辽宁省通过5个试验户对采用JSWG-120钢骨架距形储粮仓储藏穗玉米,与传统储藏法(地摊穗、栈子穗)进行对比试验,阐述了仓储玉米的优点和效益.     

DWY系列全液压轮斗挖掘机在国投哈密一矿的应用

介绍了DWY系列全液压轮斗挖掘机的主要构成、工艺流程及性能参数,总结了全液压轮斗挖掘机在国投哈密一矿选型、应用及发展情况,论述了全液压轮斗挖掘机在露天开采工艺中的优势及前景。     

压力脉冲解堵影响因素及室内试验研究

压力脉冲解堵在物理法采油技术中以操作简单为其显著特点,在前苏联各石油企业普遍得到推广应用,取得了明显的经济效益,然而对形成压力脉冲的机理及影响因素的研究介绍不多;介绍了室内所做部分试验成果,分析研究了形成压力脉冲的各种影响因素。对压力脉冲解堵工艺的现场应用具有一定的指导意义。     

Synthesis of colloidal LaF3： 0.04Yb^3＋, 0.01Er^3＋ nanocrystals with green upconversion luminescence

A synthesis of LaF3：0.04Yb^3＋,0.01Er^3＋ nanocrystals with oleic acid as a capping ligand was presemed. The X-Ray Diffraction （XRD） pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy （TEM） demonstrated that the average size of the nanocrystals was less than 10 nm, with a narrow size distribution. The nanocrystals were dispersible in nonpolar solvents and form a fully transparent colloidal solution, and the solution was stable for several months without any aggregates. The Yb^3＋-Er^3＋ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrystals were potentially applicable in biolabeling and bioimaging.     

Synthesis and Upconversion Luminescence of LaF3 ： Yb^3＋ , Er^＋/SiO2 Core/Shell Microcrystals

LaF3：Yb^3＋ , Er^＋ microcrystals were synthesized by a hydrothermal method, and then, the LaF3： Yb^3＋ , Er^＋ microcrystals were coated with silica. Phase identification of LaF3： Yb^3＋ , Er^＋ and LaF3： Yb^3＋ , Er^＋/SiO2 was performed via XRD. The TEM image showed that the size of LaF3： Yb^3＋ , Er^＋ was 150 nm and LaF3： Yb^3＋ , Er^＋/SiO2 presented clearly a core/shell structure with 20 nm shell thickness. The upconversion spectra of LaF3： Yb^3＋ , Er^＋ and LaF3： Yb^3＋ , Er^＋/SiO2 in solid state and in ethanol were studied with a 980 nm diode laser as the excitation source. The upconversion spectra showed that the silica shell had little effect on the properties of fluorescence of the LaF3：Yb^3＋ , Er^＋ microcrystals. At the same time, the green luminescence photo of LaF3： Yb3＋, Er3＋/SiO2 in the PBS buffer was obtained, which indicated that the LaF3： Yb^3＋ , Er^＋/SiO2 could be used in biological applications.     

一次砾石充填防砂工具的研制

针对砾石充填防砂工艺存在施工复杂和占井时间长等问题 ,研制了一种新型一次砾石充填防砂工具。这种工具主要由丢手、密封、锚定和液体转向 4大部分组成 ,实现了一趟管柱完成地层填砂、环空填砂和坐封丢手等多道工序 ,减少工人劳动强度和占井时间。 2 1口井的应用证明 ,这种充填工具充填、丢手及打捞性能良好 ;除 1口井因供液不足开井不成功外 ,其余 2 0口井均正常生产 ,施工成功率 10 0 % ,平均防砂有效期 2 0 3d ,累计产油 175 0 3t。     

提高破碎机受料仓下链板输送机驱动能力的试验研究

<正> 1 前言 1116/220型冲击锤式破碎机是西德AUBEMA公司,1986年为霍林河矿务局南露天矿地面输煤系统专门设计制造的,生产能力为2000t/h。该机的主要特点是破碎与给料合二为一,布置紧凑,物料过粉碎性小、粉尘少、     

泡沫射流冲砂解堵工艺在孤岛油田的应用

孤岛油田属于疏松砂岩油藏，微细的地层砂粒运侈堵塞防砂管柱，易造成绕丝筛管或割缝管缝隙堵塞，严重影响到油井供液能力。利用氮气产生的泡沫流体作为射流冲砂解堵介质，结合泡沫流体及高压射流解堵工艺的优点，在室内用搅拌法评价了发泡剂的性能，优选发泡剂的使用浓度为3％～5％。现场试验效果表明，泡沫射流冲砂解堵工艺能够冲出井简内和防砂工具中的颗粒堵塞物，助排效果好，能较好地解决油井砂堵问题。