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本文采用流动模拟实验方法,以渗透率损害率为评价气层损害的定量标准,对以川东石炭系为主的完井液损害程度及滤失深度进行了试验研究,并对地层损害进行了预测。     

Influence of adsorption on the measurement of diffusion coefficients by Taylor dispersion

The effect of adsorption on the measurement of diffusion coefficients by the Taylor dispersion technique is investigated by modifying the governing equation to account for reversible, nonequilibrium adsorption. The resulting two-dimensional equations are solved by an explicit finite-difference technique. Experimental data for the acridine carbon dioxide system indicated that acridine adsorbs on the walls on the tubing and these data were investigated with this model. The influence of carious parameters including the number of sites and the rates of adsorption desorption was investigated by conducting a parametric sensitivity analysis on the model. It was found that adsorption of the solute on the wall of the tubing could produce an error as high as 35% on the measured diffusion coefficient compared to the actual diffusion coellicient. Examination of the influence of each of the parameters will enable Inure investigators to reduce the effect of adsorption in the measurement of diffusion coefficients by Taylor dispersion.     

管外上升R－113流体的沸腾换热试验

详细介绍了Ｒ－１１３流体管外上升流动的沸腾换热试验，包括试验台架、流量计和温度测量的修正，以及试验数据。拟合的换热关系式为ｑ＝５２８（Ｔｗ─Ｔｓ）１．３３。     

用基团贡献法预测纯物质蒸气压

对应状态原理与基团贡献法结合，提出一个新的蒸气压估算方程（ＲＬＹＭ）。通过对烷烃、烯烃、炔烃、环烷烃、环烯烃、醇、环醇、酮、醚、芳烃、酚、萘在内的１７４种有机物质蒸气压实验数据的关联，获得了３０种基团的贡献参数值。新模型的预测精度优于现有的对应状态法，并且对高碳分子仍有较好的估算精度。总的关联误差小于１．１７％。     

Pressure Behavior for Spherical Flow in a Reservoir of Non-Newtonian Power-Law Fluids

The pressure variations during polymer flooding of oil reservoirs for oil recovery projects can be used to analyze the flow in the reservoir which is especially useful for the partially perforated reservoirs. This paper presents a relationship between the viscosity and the shear rate which is similar to forms developed for radial flow (Odeh, A. S., Yang, H. T. ([1979]). SPEJ. AIME (Jun.) 155). The power-law viscosity model is used to give the variation of the fluid viscosity with the spherical radius for a mathematical model of unsteady spherical flow for non-Newtonian fluids with wellbore storage and skin. An analytical solution for the wellbore pressure responses derived in Laplace space is used to analyze the behavior characteristics at early and later times to interpret the well-test parameters. The pressure variations are similar to those for a Newtonian fluid at the early times, but at later times, the variation of the viscosity with the power-law exponent is important, so the pressure response differs from that for a Newtonian fluid. The solution has significance for interpreting well test parameters for non-Newtonian spherical flow.     

撞击流管式反应制备超细氧化锆粉体

我国氧化锆粉体产业目前基本上“精进粗出”，迫切需要开发氧化锆粉体备新工艺，特别是具有高附加值的纳米氧化锆粉体制备技术，液相反应沉淀法具有成本低，易于工业化等优点而成为研究的热点。本文采用撞击流管式反应新工艺，撞击流接触反应强化了过程的微观混合。实现了均匀成核，使得成核过程易于控制，而管式反应器的独特设计克服了返混，因而使得反应沉淀过程易于控制，粒子分布窄。用该工艺结合醇热处理表面改性制备的超细氧化锆粉体。平均粒径约为14nm，粒度分布窄并无硬团聚发生。该方法过程简单，易于工业化大生产。     

高温延缓型有机硼OB-200交联压裂液的性能与应用

报道了实验考察高温延缓型有机硼交联剂OB 200在5g/L羟丙基瓜尔胶水基压裂液中的各项性能及其影响因素的结果,简述了在7口井上应用该压裂液的情况。OB 200/HPG压裂液在pH=11.5、温度5～35(40)℃时交联时间长达4.7～5.6min;不加破胶剂的压裂液在温度115～135℃时,8h内可完全破胶液化,讨论了OB 200体系的自动破胶机制;在135℃、170s-1条件下剪切2h,压裂液粘度>120mPa·s;高速(500s-1)剪切后,在低速下(80s-1)粘度可恢复到初始值的94.5%(95℃下)或70.0%(135℃下);在95～135℃滤失小,滤失系数为6.93×10-4～9.81×10-4m/(min)1/2;残渣含量低,135℃下破胶20h后为319mg/L,而对比硼酸盐压裂液(90℃)和有机钛压裂液(135℃)分别为364和457mg/L;在人造岩心上测得渗透率伤害率在5.74%～9.66%,平均7.32%,而对比有机钛压裂液为24.07%～29.98%,平均27.09%。在中原油田桥口和户部寨地区7口井2706～3769m井段用该压裂液压裂,施工成功率100%,获得了油、气增产效果。图5表4参3。     

转子叶片在非均匀来流条件下的流体激振特性

该文通过研究得出非均匀来流对转子叶片流体激振的三个重要特征 :非均匀来流相对于转子叶片的非定常流中主频分量是产生叶片动应力的决定因素 ;非均匀来流的非均匀度 (相当于非定常流的波幅 )大小和叶片流体激振的动应力大小成正比 ;转子叶片流体的定常压力水平与叶片动应力的水平密切相关。图 4表 2     

肯234井钻井液工艺技术

西哈萨克斯坦滨里海盆地东缘肯基亚克构造带的肯基亚克油田，因地质情况极为复杂，喷、漏、塌、卡等复杂事故频繁发生，钻井的成功率极低。完全采用中国钻井液工艺技术的肯234井，针对地层特点，选用两性离子聚合物(磺化)钻井液体系及配套技术，克服了大尺寸井眼大段泥岩的造浆、井壁稳定、高密度盐水钻井液的流变性控制、漏喷同层的压力控制等复杂问题，使该井在施工期间，井壁穗定、起下钻井眼畅通，全井事故、复杂时效均为零。通过该井的施工，初步建立了肯基亚克油田的钻井液技术方案，并对实践中出现的问题，提出了改进意见。     

Extraction of Singular Points from Dense Motion Fields: An Analytic Approach

In this paper we propose a new method to extract the vortices, sources, and sinks from the dense motion field preliminary estimated between two images of a fluid video. This problem is essential in meteorology for instance to identify and track depressions or convective clouds in satellite images. The knowledge of such points allows in addition a compact representation of the flow which is very useful in both experimental and theoretical fluid mechanics. The method we propose here is based on an analytic representation of the flow. This approach has the advantage of being robust, simple, fast and requires few parameters.