It's known to all that polymer solution can increase sweep efficiency.
普遍认为聚合物溶液可有效提高波及效率。
Polymer flooding technology enhances oil recovery by increasing the sweep efficiency of water.
聚合物驱油技术是通过提高水的波及系数提高原油采收率。
Wettability not only influences sweep efficiency, but also influences remaining oil distribution.
润湿性不仅影响驱油效率，也影响剩余油分布形态。
In addition, pore channel's shape affects microscopic sweep efficiency by changing the flow situation.
另外，流道形状对流体微观波及效率的影响也是通过改变流体的流动状态带来的。
Numerical results show that higher viscoelasticity, the larger microscopic sweep efficiency of the fluid.
数值结果表明，流体的粘弹性越高，微观波及效率越高。
The study results show that the displacement efficiency and sweep efficiency play different roles in the different layers.
研究结果表明，对于非均质性严重的油藏，不同层段的波及效率和驱替效率所起的作用不同。
Relationship between the capillary number and sweep efficiency and residual oil saturation were given from laboratory tests.
通过试验给出了天然岩心驱油效率与毛管数的关系，剩余油饱和度与毛管数的关系。
In particular, discontinuous shales, acting as vertical flow barriers, affect significantly the sweep efficiency of oil reservoirs.
特别是，不连续的页岩，作为垂直的流体流动遮挡，极大影响油罐的洗油效率。
The injectivity, plugging performance and sweep efficiency of the gel system is evaluated through single and parallel core experiments.
通过单岩心和并联岩心实验对凝胶体系的注入性能、封堵性能和驱油效果进行了评价；
Pilot test of linear water injection may be carried out to improve the sweep efficiency of the injected water and improve the effect of block development.
开展线性注水先导试验，提高注入水的波及系数，改善区块开发效果。
At normal temperatures, the oil driving efficiency and the sweep efficiency of water driving are low, and the crude viscosity increases after water drive.
常温驱油效率低，水驱波及系数小，且水驱后原油黏度增加。
The results show that the sweep efficiency and displacement efficiency work different effects on different layers in the severely heterogeneous reservoir.
通过研究表明对于非均质严重的油藏，不同层段的波及效率和驱替效率所起的作用不同。
In the vertical direction, follow-up water diverted from the high-permeability layer to the low-permeability layer to enhance the vertical sweep efficiency.
在纵向上，后续水从高渗层转向低渗透层，提高纵向波及系数。
Third, in order to calculate microscopic sweep efficiency in pore models, we define sweep boundary of displacement fluid, and determine it by velocity method.
第三，为了计算孔隙模型的微观波及效率，本文给出了驱替液波及边界的定义，并采用速度法确定其在流场中的位置。
For the reservoir with high water cut, alternative injection of gas and solution can improve sweep efficiency, increase producing reserves and recovery factor.
采用气液交替注入技术可以提高高含水油藏的波及效率，改善油层的动用程度，达到提高原油采收率的目的。
The areal heterogeneity directly influences the swept area and sweep efficiency of the injected water, and thus controls the areal distribution of the remaining oil.
平面非均质性直接影响到注入水波及面积和波及效率，从而控制剩余油在平面上的分布。
The result of laboratory experiments showed that the chemicals MCA improved the displacement efficiency of hot water and the sweep efficiency of steam and hot water.
化学体系中室内实验结果表明，化学体系中MCA能提高热水的驱替效率以及蒸汽和热水的波及效率。
Lateral sweep efficiency is the function of injection-and-production system, angles between direction of injection and fractures, and the relative length of fractures.
平面波及系数是注水方式、裂缝走向夹角及裂缝相对长度的函数。
In addition, using the relationship among recovery percent, displacement and volumetric sweep efficiency, the equations for estimation of the volumetric sweep efficiency and.
利用采出程度、驱油效率和体积波及系数三者关系，给出了体积波及系数与可采储量采出程度的计算公式。
Comparing with water flooding, the viscoelasticity of polymer flooding is favorable for improving the sweep efficiency of reservoirs, but it is limited to enhance oil recovery.
与注水工艺相比，聚合物所具有的粘弹性能提高驱油效率，但其对提高采收率的贡献是有限的。
The pores with suitable coordination number will lead to high sweep efficiency. Also remaining oil can be generated easily in the pores with a large or small coordination number.
具有合适配位数的孔隙，驱油效率较高，较大或较小配位数情况下孔隙中都容易产生剩余油。
Study on optimum plugging quantity proves that the more plugging agent used, the more complete plugging of high permeable formations, and thus higher sweep efficiency and recovery.
从最佳封堵用量研究得出：堵剂用量越大，高渗带封堵得越彻底，因此波及系数越大，原油采收率越高。
Steam drive pilot test in Block Qi40 has achieved ideal development result, but the sweep efficiency is low and stable production period is short because of reservoir heterogeneity.
齐40块蒸汽驱先导试验取得了较为理想的开发效果，但由于受油藏非均质性的影响，蒸汽驱过程中出现了蒸汽波及效率低、稳产时间短等现象。
The sweep efficiency and oil displacement effect of polymer flooding in seven spot and five spot patterns for single and multizone reservoirs were simulated by numerical simulation.
用数值模拟研究手段对七点法井网、五点法井网以及单油层、多油层聚合物驱的波及系数及驱油效果进行了模拟；
What knowing about water injection sweep efficiency and oil layer's water flooded condition is an important content for dynamically analyzing development oilfield by water injection.
了解注水波及系数及油层的水淹状况是注水开发油田动态分析的一项重要内容。
The flooding pattern of a area is optimized according to the distribution rule of the fractures. Productivity and waterflooded sweep efficiency of this oil reservoir raised effectively.
根据裂缝分布规律，优化了A区注采井网，有效地提高了该油藏产能和注水波及系数。
Prepositive polymer slug displacement can decrease the effect by the formation heterogeneity, prevent the gas breakthrough and improve the displacement sweep efficiency of the injective gas.
对于地层非均质性的影响，通过注入聚合物段塞调驱，能起到防止气窜，增加注入气驱扫效率。
The sweep efficiency of an oil reservoir plays a decisive role in the course of oil production and the ultimate recovery in a large heterogeneous oil reservoir with complex geological structure.
对于地质构造复杂的大型非均质油田，油层作用波及系数对采出过程和最终采收率起着决定性作用。
The sweep efficiency of an oil reservoir plays a decisive role in the course of oil production and the ultimate recovery in a large heterogeneous oil reservoir with complex geological structure.
对于地质构造复杂的大型非均质油田，油层作用波及系数对采出过程和最终采收率起着决定性作用。
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