采收率

For the present, the questions about profile modification oil displacement and combination technology are not yet quite clearly, such as compatibleness etc.

目前，调剖与驱油及组合调驱提高采收率技术还存在油藏适应性不明确等问题。

Aiming at the source and corrosiveness of carbon dioxide, the insitu carbon dioxide generation technology to enhance oil recovery was proposed.

针对CO2的气源、腐蚀等问题，提出了就地CO2提高原油采收率技术。

All process for formation and development of water and gas coning/cresting in horizontal wells should be shown by he experiments.

在底水油藏参数基本不变的情况下，研究了水平井的几何参数和生产压差对采油量和采收率的影响。

The technique of abrasive jet cutting in oil well are developed to be used in increasing oil production by abrasive two-phase jet theory.

磨料射流油井割缝增产技术是利用磨料两相射流机理开发出来的用于油田提高油井采收率的一项技术。

A method of state equation for determining minimum miscible pressure of CO_2;2. The minimum miscible pressure s of CO2,N2,natural gas and crude oil are measured.

通过气驱细管实验，在地层条件下测定了大庆油田芳48断块在二氧化碳、氮和天然气驱下原油采收率与压力的关系，由此确定了原油与二氧化碳、氮和天然气的最小混相压力。

The result indicates that all the reservoirs have the characteristics that the mineral maturity is low but the structure maturity is high; the porosity types are primal grain porosity and dissolution porosity est., The physical property is middle pore and low permeability , middle pore and very low permeability; Sedimentary environment, petrology composition and radius, composition and amount, and the digenesis are all the factors that influence the reservoirs.

结果表明：延长组储层具有成分成熟度低而结构成熟度高的特点；孔隙类型主要为粒间孔，溶蚀孔，晶间孔和微裂隙等；属于中孔，低渗型和中孔，特低渗型储层。影响储层物性的主要因素是沉积环境和沉积相，碎屑颗粒成分及粒度，填隙物成分及含量，成岩作用等。该研究对制定油田开发方案和提高油气采收率具有重要意义。

The authors analyzed the study status of flow unit, considered that the combine of exact flow unit division and quantitative remaining oil description is the best method of searching advantaged potential area.This research provides that the method is an important geological basis for the oil field development management and the improvement of oil and gas recovery

笔者在分析流动单元研究现状的基础上，认为将准确的流动单元划分与定量的剩余油描述有机结合，即"动静"结合，是寻找有利挖潜区的最佳方法，并运用实例说明了该方法在油田生产实践中的应用，对提高油田采收率具有重要的指导意义。

The new method is introduced into the analysis of a fault block in Liaohe oilfield and this application shows that it is effective for the design of developing plan and the enhancement of the recovery ratio.

利用该技术对辽河油田某断块进行了实际剩余油气分析，在开发方案设计和提高采收率方面取得了明显的效果。

The basis function of the coinjection of Nitrogen and steam is increasing the displacement volume and supply the displacement energy on the basis of Nitrogen, the result of the numerical simulation showed that, after the coinjection of Nitrogen and steam (the optional aqueous Nitrogen ratio was 1: 20～1: 50), the theamal readius increased from 30m to 55m more or less, the recovery ratio increased by 5～10％. The production effect of the high cycles steam stimulation will be improved and the pattern infill will be avoided and the economic results will be improved. 4. The poor result of steamflood is another problem. On the basis of the analysis of the foamer mechanism in the propayation, movement and stabilization, this paper showed that the main meachanism of the increasing recovery of the Nitrogen foam and steamflood was the increasing displacement factor and oil displacement efficiency.

三针对蒸汽吞吐加热半径有限（一般30m左右）而蒸汽吞吐轮次已高达5轮以上的具体情况，将氮气与蒸汽混合（套管环空中注氮气，油管中注蒸汽）进行吞吐可增加加热半径1～2倍以上；在对原油流变性研究基础上，对氮气蒸汽原油体系状态进行了分析，指出了氮气在油藏中基本上是以气相方式存在；热氮混合吞吐的基本作用为扩大波及体积和提供驱油能量；在此基础上所进行的热氮混注数值模拟研究表明：蒸汽中加入氮气后（最佳汽氮比为1：20～1：50），加热半径从30m增至55m左右，采收率可提高5～10％以上，大大改善了高轮次蒸汽吞吐的生产效果，可避免大规模井网加密，提高了经济效益。

With high quality ,thick reservoirs recovery of more than 60% and SORs of about 0.3~0.5 are obtained but in thinner, and in anisotropic reservoirs with lower oil saturations large quantities of steam are required to heat the depleted reservoir and the overburden .

蒸汽辅助重力泄油是开采超稠油油藏的一个比较有效的方法，对于均质厚层状稠油油藏，采收率可达60%以上，油汽比可达0.3～0.5，具有较高的经济效益。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。