The main characteristics of Gunan 131 fault block oil reservoir in Gudao oilfield are deep burial, low permeability, difficult water injection, low recovery percent and low recovery efficiency.
孤岛油田孤南131断块油藏的主要特征是埋藏深、渗透率低、注水困难、采出程度低、采收率低。
The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.
采用组合钻具进行跟管钻进，通过随钻跟入的套管保护孔壁，解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题。
It was indicated that MARS had such distinctive advantages as: high phenol disposal efficiency, high phenol recovery rate, slow membrane fouling, simple installation, easy maintenance, low cost.
实验表明MARS具有高效处理高浓度苯酚废水，设备简单，维护方便，膜污染程度低，苯酚回收率高，处理成本低廉等优点。
The preparation method of the photocatalyst with high catalyst efficiency and magnetic recovery capability of the invention has simple operation and low requirement on equipment.
本发明的高催化效率、可磁性回收的光催化剂的制备方法，操作简单，对设备要求较低。
The apparatus has the advantages of simple structure, low cost, continuous operation, high work efficiency, and high ammonia recovery rate as high as above 98 percents after test.
装置简单，成本低，由于可连续工作，因此工作效率高，经测试，氨的回收率可高达98%以上。
Pumping recovery well has a low efficiency in system generally at present.
抽油机井目前普遍存在系统效率偏低的问题。
The reason why the recovery efficiency of cleaning is low is that the classification effect of cyclone is not good and the technical equipment is backward.
精选回收率低的主要原因是旋流器分级效果差及工艺设备落后。强调铜钼分离作业是精选工艺降铜排泥的关键环节。
Municipal solid waste was landfilled without being separated in Kunming. However, the resource recovery efficiency was very low, resulting in environmental pollution secondly.
昆明市采用原生垃圾卫生填埋的单一方式处理垃圾，资源化程度低，同时对环境造成了严重的二次污染。
With the progression of recovery, the efficiency of enhanced recovery is low, which is disadvantageous for improving technical and economic benefits in the high water-cut stage(over 80%) of oilfield.
随着开采过程的延伸，在油田高含水后期开发（综合含水率大于80%）中采用强化开采方式是低效的，不利于提高油田开采的经济效益和技术效果。
Recovery efficiency of oil reservoir is not high for thin oil-water two-phrase region and low movable oil saturation.
油水两相区区域较窄，油藏可动油饱和度较低，油藏采收率不高；
The efficiency of oil recovery with water flooding process is poor in low-permeability oil reservoirs.
低渗透油藏注水开发效果差、采收率低，而采用气驱技术是动用此类难采储量的有效方法之一。
The breakthrough of gas usually occur during low permeability reservoir development, that lead to recovery efficiency fall.
低渗透油藏注气开发极容易发生气窜，导致采收率降低。
Producing condition of poor reservoir is bad, which makes waterflood efficiency, conformance factor and final recovery efficiency low, and the development effect is bad.
差油层动用状况较差，导致油田水驱效率和波及系数较低，最终采收率低，开发效果差。
To modify the original and low time efficiency management models, the rapid reaction system was early established in 4th oil Recovery Company of North China Oilfields.
为改变原始、时效性差的生产管理模式，华北油田分公司第四采油厂率先建立了快速反应机制。
To modify the original and low time efficiency management models, the rapid reaction system was early established in 4th oil Recovery Company of North China Oilfields.
为改变原始、时效性差的生产管理模式，华北油田分公司第四采油厂率先建立了快速反应机制。
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