采收率

Based on these recognitions, by the analysis of production method, development formation division, development well grid and well spacing, single well daily rate and recovery efficiency prediction, etc, a development plan was brought to effect: it is all around affusion and made the oil-well of east fault sparse, and predicted the recovery efficiency of 55%, provide a sound foundation for the future development in the area.

在此认识的基础上，通过开采方式、开发层系划分、开发井网和井距、单井日产能力、采收率预测等研究，确立了边外注水+断层东油井抽稀，断层西少部署一排油井的开发方案，利用数值模拟方法，预测采收率为55%，完成油藏开发方案的设计，为该区下一步开发提供了有力依据。

Colloid Department of Chemistry of Beijing University trans.

作者单位：1 272113 山东济宁，济宁医学院药学系 2 102249 北京，中国石油大学进步采收率中心

The key of miscible displacement is determination of miscible pressure based on the crude components and injected solvent.

混相驱是采收率较高的开采方法之一，其采收率可达90％以上。

Injecting CO2 into the subsurface oil and gas reservoirs and coal-beds, at the moment, is the most realistic choice in reducing the CO2 emission into the atmosphere, which can not only enhance the recoveries of the oil and gas, and coal bed methane, but also can sequestrate partial CO2 within the subsurface reservoirs and coal beds permanently.

把CO2注入油气藏、煤层提高油气采收率的方法(CO2-EOR、CO2-EGR、CO2-ECBM)，因其在提高石油、天然气和煤层气采收率的同时，又能使一部分CO2永久地埋存于地下，实现油气增产和CO2减排的双赢效果，而成为当今CO2减排最具潜力的现实选择。

Through the trial regression to the ratio of unit injection well control area,unit well control area and injection-production well number ratio and shirr formula and unit injection well volume rate of change increasing with unit injection well control area decreasing,then Waterflooding reservoir macroscopica well spacing density formula c.

油藏工程理论及现场实践均表明，注水开发低渗油藏其注水方式和注采井数比对注水波及体积及水驱采收率有较大影响，通过对注水井水驱控制面积、单井控制面积与注采井数比进行了试探性回归分析，再结合谢尔卡乔夫公式，推导出了水驱采收率、驱油效率、井网指数、注采井数比与井网密度的关系式，从而建立了水驱油藏宏观井网密度公式。

In this dissertation, the weak gels with good thermal stability and/or salt tolerance for use in EOR were prepared from HPAM and aluminium citrate or the compound containing hydroxymethyl groups in aqueous solution. The gelation mechanisms, structure, and properties of the HPAM-AlCA and HPAM-PRIM gels were investigated. For the HPAM-AlCA gelling system, the effects of aluminium : citrate and pH value on the properties of AlCA were systematically studied.

本文以研制高性能价格比的提高石油采收率用聚合物材料为目标，在耐温抗盐水溶性聚合物研究工作的基础上，选择聚合物弱凝胶这一前沿课题为研究对象，对HPAM-柠檬酸铝凝胶的有关基础问题进行了研究，研制出了具有优异耐温抗盐性能的HPAM-PRIM弱凝胶，解决了采用聚合物提高石油采收率的高性能与低成本之间的矛盾。

In order to clear heterogeneous reservoirs waterflooding performance, and decreased interlayer and within-layer contradictions, and improved the water flooding recovery, experimental study should be conducted first, This paper based on Pucheng Sasan reservoir sandstone cores to study object. Multi-point pressure measurement of water flooding oil experimental apparatus was established. Through the three-layer water flooding experiment to study injection strategy, interlayer interference and recovery factors. True sandstone micro-model water flooding used newly developed color visual image analysis system researched water-drive types, forms of residual oil and waterflood efficiency. Percolation mathematical model was established, black oil simulation program was developed, long-core displacement experimental results were matched, pressure and saturation change were researched by the simulation matching results.

为了明确非均质储层注水开发动态过程，减轻由于层间和层内非均质造成的开发矛盾，提高水驱采收率，本文从实验研究出发，以濮城沙三储层岩心为研究对象，建立了一套带多测压点的多层长岩心水驱油实验装置，通过开展三层水驱油实验，研究注水方式、层间干扰以及采收率影响因素；真实砂岩微观模型水驱油实验采用最新研制的彩色可视化图像分析系统研究水驱类型、残余油形成类型以及水驱油效率；建立并求解渗流数学模型，编制黑油模拟程序，对长岩心驱替实验进行拟合，通过拟合结果研究驱替过程中油水饱和度和压力的变化情况等研究工作。

The research shows that the percent recovery of natural gas and condensate oil in core experiments are larger than one in PVT experiments; the real relative permeability curves have a significant effect on the percent recovery;. retrograded condensate oil of lower condensate oil system can not second evaporate reciprocally in low permeability cores.

研究表明，岩心衰竭实验比PVT筒中凝析油、气采收率高；相渗曲线对凝析气藏的采收率影响较大；低凝析油含量体系在低渗岩心中凝析油析出后再蒸发困难。

A 2D two phase horizontal fracture model was established when studying hydraulic fractures for the requirement of shallow reservoir stimulation in this block; and a 3D two phase model has been built for numerical simulation of a reservoir with five-spot pattern without considering vertical fracture flow. The impacts of horizontal fracture half length and flow conductivity on recovery factor and ultimate recovery factor are studied for some certain injection and production conditions. The parameters of hydraulic fracturing are optimized.

根据该区块浅层油层改造的实际需要，研究水力裂缝时建立两维两相的水平裂缝模型，不考虑裂缝垂直方向上流动，建立了五点井网条件下三维两相油藏数值模拟模型，研究了水平裂缝半长和导流能力对油井产量、注采条件下的采收率和最终采收率等指标的影响，优化了水平裂缝参数。

Besides, the organic cross-link system and dualistic organic cross-link system developed can enhance oil recovery greatly, separately enhancing recovery by about 12 and 35 percent.

应用情况表明，研制的弱交联凝胶有机交联体系和有机复合交联体系能够大幅度提高采收率，可分别提高采收率12％和35％左右。

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。