ASP-Foam flooding is a new EOR technology which is developed based on ASP flooding and foam flooding. Foam is formed in the process where ASP is injected with gas alternatively or simultaneously. Due to the extra low tension and high viscosity and the effects of gas blocking you can expected the results of high recovery and high sweep efficiency.

泡沫復(fù)合驅(qū)是在三元復(fù)合驅(qū)和泡沫驅(qū)基礎(chǔ)上發(fā)展起來的一種新的三次采油技術(shù)av日韩无码爱爱，該體系是在三元復(fù)合體系和天然氣的交替注入或同時注入過程中形成的，由于該體系具有超低的界面張力免费www你懂的网站视频、較高的粘度及泡沫的氣阻作用中国野外一级视频片，預(yù)計泡沫復(fù)合驅(qū)既能顯著提高驅(qū)油效率和波及體積91资源总站。

Therefore the chapter gives out a method to enhance the oil recovery ------surfactant flooding, choosing firstly non hydronium surfactant compound system that is due to oil permeable bed of Xing-shugang oil field, and measuring relative permeability in surfactant flooding, surfactant flooding has the purpose to reduce oil-water interface intension and add oil disperse in water.

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The dissertation includes the work as follows: Firstly, we present a random graph model with spatial reuse for a dense MANET which using directional antennas. The analytic formula of several important performance parameters for the MANET are obtained under the DSR routing protocol, such as the average flooding distance, the probability generating function of the flooding distance, the probability of a flooding route to be symmetrically valid, the average time to find a symmetrically valid route and the cost to successfully route a data packet to its destination. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effcctive in terms of the performance of the dense network with directional antenna, because the bigger is the degree of spatial reuse, the smaller is the average flooding distance.

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The produced water which was made by crude oil dehydration containing polymer, alkaline and surfactant, brought many technique problems in the water treatment process system, this made the polymer flooding and water flooding water treatment technologies difficult to suit to the disposal requirement of the special water. The developed experiment research indicated that: because of the surfactant, the semidiameter of the oil droplets in the ASP flooding is much smaller than that in polymer flooding, and the stability of the oil droplets is higher than that in polymer flooding, The viscosity and combine difficulty of the oil droplets increased, and all the changes of speciality resulted in the increased difficulty in the ASP flooding produced water disposal.

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This paper presents the authigenic CO2 flooding mechanism and selects the authigenie CO2 flooding system based on taking reaction speed and economic factors into account. Evaluation is conducted on the effect of the selected CO2 system on expansion viscosity reduction in crude oil. The flooding mechanism and effect of the system is studied by using microscopic models and physical models.

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Flooding,as a kind of disturbance events,occurred with higher and higherfrequency over the world.To investigate the effects of flooding disturbance ongrassland vegetation and the soil,a comparatively thorough study was conducted onAneurolepidium chinense grassland in Songnen plain,Northeast China.The studysite was located in Sanjiadian National Rangeland in the territory of Da'an city,Jilirprovince,which was partly flooded in 1998.On the study site,Several transectssubjected to different flooding durations and intensities were designed for thecomparative study among them on such aspects as vegetation characteristics,seedbanks,vegetative propagation of rhizomatous plants,distribution patterns ofpopulations,interspecific relations,and physio-chemical properties of soil.Theresults were as follows:(1)Of the functional group composition of the vegetation,with the elongation of the flooding duration or the increase of flooding severity,theratio of hygric and hygro-mesic plants increase,while that of mesic and mesoxericplants decrease,of Therophytes changed unimodally,of Geophytes increased,whileof Hemicryptophytes decreased.

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A series of profile numerical simulation are based on the datas of core flooding experiment, including the homogeneous profile positive rhythm section, the rhythm section, interlining profile, interlayer heterogeneity section, intraformational heterogeneity of reservoir section, the actual reservoir simulation. The the section of displacement mechanism of core flow method and the datas of core flooding experiments take into account, the EOR scheme of later stage is CO2 preslug followed by the N2 slug flooding, at last is the waterflooding or depletion type of drive..

為了進(jìn)一步分析注CO2／N2段塞驅(qū)對掃油效率的影響，在巖芯驅(qū)替實驗的基礎(chǔ)上對N2推進(jìn)CO2段塞驅(qū)進(jìn)行了均質(zhì)剖面欧美性爱调教美女视频播放三区、正韻律剖面国产综合a片一区、反韻律剖面、隔層剖面AAAA一,黄片、層間非均質(zhì)剖面国产在线视频一、層內(nèi)非均質(zhì)剖面、實際油藏剖面的數(shù)值模擬研究中国一级大黄片强奸与乱伦，通過對比研究国产第一页亚洲，初步認(rèn)為高11油田在開發(fā)中后期提高采收率技術(shù)上可選取在適當(dāng)高的壓力條件下，先注前置CO2段塞驅(qū)98欧美精品系列一区二区，后續(xù)再注N2段塞頂替驅(qū)爱搞为爱搞点激，然后再轉(zhuǎn)注水或衰竭開采的驅(qū)替方式。

In order to do research on pipe flow and pump characteristics of polymer flooding and water flooding rod-pumped well in especially high water-cut stage, rheometric test aimed at production stream from polymer flooding and water flooding rod-pumped well in especially high water-cut stage has been made, and the characteristic of production stream in especially high water-cut stage is confirmed as Newtonian fluid. Experiments using different mediums about pipe flow and pump characteristics is made. Frictional resistance and coefficient of friction resistance of annulus fluid between sucker rod and the pipe flow is calculated under different working conditions. Frictional resistance between plunger and pump barrel under different parameters is calculated based on related theory of pump characteristic and the strained analytical model of oil-well pump. Besides, using the theory of slit flow and hydraulic -clamping pressure, the frictional resistance is calculated, and the error between the result and measured value is no more than 13%.

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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.

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Soybean is sensitive to flooding and waterlogging stress, especially at early seedling stage as well as flowering and podding stages; On the other hand, there existed great difference in the tolerance to flooding or waterlogging in soybean germplasm, so utilizing tolerant cultivars is one of the most effective ways to improve the soybean production under flooding and waterlogging stresses condition.

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