At high speed, asphaltene plugging is more serious with increase of flow rate. The damage degree of asphaltene plugging is higher in low permeability core than in high one.
在较高流速下，随速度升高，沥青所造成的孔喉堵塞更加严重，在低渗岩心中沥青堵塞引起渗透率伤害程度大于高渗透岩心。
It is indicated that the technique of shielded temporary plugging is quite effective for reservoir protection of viscous oil fields with high permeability and low pressure in Bohai Sea.
实践证明，屏蔽暂堵技术是目前对渤海高渗、低压、稠油油田实施储层保护的一项行之有效的技术。
For the cores with different permeability, its water plugging rate was higher than 85%, oil plugging rate was lower than 20%, and-selectivity was good.
对不同渗透率的岩芯，堵水剂的堵水率大于85%，堵油率小于20%，具有良好的选择性。
In this paper, the modified starch polymer gel system is investigated for fracture plugging in the low permeability reservoir of Chang 6 in Zhengjin oilfield.
本文以镇泾油田长6低渗透油藏为例，选取改性淀粉聚合物凝胶体系进行地下成胶封堵裂缝实验研究。
The permeability increased a little in the reservoirs with poor physical property. And the permeability even decreased in the poorest reservoirs for formation pollution and plugging.
物性差的储层，渗透率增加幅度小，更差储层由于地层污染、堵塞，甚至存在渗透率降低现象。
Since pure foaming agent with short half-value period causes a poor plugging effect for high-permeability reservoir with water channeling, this paper studies on gel foam sysem.
针对纯发泡剂半衰期较短、对已形成注入水窜流通道的高渗透储层封堵效果较差的实际问题，开展了凝胶泡沫体系的研究。
Swelling, cracking, dispersion, migration and plugging of clay minerals are the main factors of the reservoir damage in high-pressure low-permeability reservoirs.
粘土矿物的膨胀、破裂、分散、运移和堵塞是对高压低渗油藏储层伤害的主要因素之一。
HAGS can increase oil recovery by adjusting the permeability variation through plugging the higher permeability layer and forcing the injected water to flow into the lower permeability layer.
HAGS通过封堵高渗层，调整模型的渗透率差异，使液流转向低渗层，从而达到提高采收率的目的。
The results showed that, the permeability of water phase decreased 85% at least, the permeability of oil decreased no more than 25%. PDZ-1 has high selective plugging and a nice flushing resistance.
结果表明，该堵剂可使水相渗透率下降85%以上，油相渗透率下降25%以下，具有明显的选择性封堵作用及优良的耐冲刷性。
Laboratory test shows that core plugging rate by using the agent is over 90%, recovered rate of permeability is over 85% after washing with water for a long period of time.
室内实验表明，该堵剂可使岩心堵塞率达到90%以上，用地层水长时间冲刷后，渗透率恢复值在85%以上。
Therefore, it is important to optimize the gel plugging system and study the character of the system and its effect for development of low permeability reservoir.
因此，选取合适的凝胶封堵体系，研究该体系的性能和裂缝封堵效果，对于低渗透油藏开发具有十分重要的意义。
The results showed that the plugging agent had high water - plugging rate and good resistance to flushing. It plugged water selectively by entering the well stratum with high permeability first.
试验结果表明，FD- 2型封堵剂的堵水率高，耐冲刷能力强，并可首先进入渗透率较大的井段，实现选择性堵水。
The results showed that the plugging agent had high water - plugging rate and good resistance to flushing. It plugged water selectively by entering the well stratum with high permeability first.
试验结果表明，FD- 2型封堵剂的堵水率高，耐冲刷能力强，并可首先进入渗透率较大的井段，实现选择性堵水。
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