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At the super-low permeable reservior sandstone of Fu and Yang in Daqing Oilfield, many pore throats exist a lot in the types of compacted and restored flakes and curved lamellas while the pore volume of micropore and the thin, compacted and shrunken throat that contribute little to flow take large scale in the total pore space. Thereof high filtrational resistance is caused by much trouble including high content of reservoir shale, serious sensibility to pressure at waterflooding, remarkable effects of undersaturation and water blocks in micropore. A method with laboratory experiment, theoretical confirmation and field application included was adopted to analyze the non-linear flow characteristics, to reveal the deep mechanism of pinhole enveloping macropore and to provide a new technology of improving the development effect. The outcomes aquired are as follows: Multiple cores with different low and super-low permeability were selected to perform seepage experiments by gas, water and oil. Three fields of flow were observed in the reservoir at different low and super-low core permeability. They are pseudo- elastic flow, transition flow and plastic creep flow. So the concept that there was no correlation of rocky absolute permeability with fluid properties that pasted itself was broken up. Two-phase seepage of water displacing oil in uniform super-low permeability shows that the two-phase seepage zone is narrow.

针对大庆油田扶、杨特低渗透油层砂岩孔隙喉道的大小和形态以压实再生型片状、弯片状喉道分布较广,压实、缩小型细喉道型,微孔不可流动的孔隙体积所占总孔隙体积的比例较大的特点;及储层泥质含量高,注水开发中压力敏感性强、微孔隙欠饱和及水锁效应显著,导致流体渗流阻力增大的问题,本文采用室内实验、理论推证和矿场应用相结合的方法,研究、分析了流体非线性渗流特征,更深刻地揭示出小孔包围大孔的机理及产生原因,并提供了改善开发效果的新的技术方法,取得如下成果:选择不同渗透率的低渗透、特低渗透岩心,进行了气、水和油单相渗流实验,揭示出当岩心渗透率不同时,油层内的流体呈现出拟弹性流变、过渡流变、塑性蠕变三种流变区,从而打破了岩心的绝对渗透率与通过岩心流体性质无关的观点;同类特低渗透岩心的水驱油两相渗流实验表明,两相渗流区较窄。

Golikov as the general and single-valued criterion for evaluating the acoustics of rooms and auditori- ums have been critically examined,with detailed discussionsconcerning:(1) the empirical foundation of the articulation-Q"functional relationship A= f,(2)the derivation of the"particular criterion"or the optimum re- verberation condition form Q",(3)the meaning of a time integration of the "noise-interference factoras viewed from the theorey of auditory perce- ption...

主要内容有:(1)以在不同的条件(如语言、测试人员、宣读方式以及声学场所等)之下的清晰度测验结果来验证 A=f函数的适用性,(2)判断了从Q&来推求以体积为参数的最佳混响时间的可能性,(3),从听觉理论来讨论&混响干扰因子&对时间积分的意义,(4)讨论了原作者对&噪声因子&的看法,指出了&噪声因子&定义中的一些值得存疑之处。

To solve those problems in extended reach wells and horizontal multibranch wells and ease the "bottleneck" of domestic pointthebit of rotary steerable drilling technology, combining theory with practice, we summarize the rotary steerable drilling technology at home and abroad, introduce two typical and popular bottom hole closed loop rotary steerable drilling tools, namely MRST and GeoPilot.

为解决在钻大位移井、水平分支井等复杂结构井时出现的种种难题以及国内指向式旋转导向钻井技术的&瓶颈&问题,将理论与实践相结合,对旋转导向钻井技术的国内外研究现状做了分析;介绍了目前国内外运用比较广泛且典型的推靠式MRST和指向式GeoPilot井下闭环旋转导向钻井工具。

Look in him, because mode of industry net alliance gathered together,industrial catenary swims up and down numerous link, can offer for traditional business include a domain name to register, build station, information to push send, attestation of online and network sale, interactive, aptitude, trade match those who wait inside is one-stop electronic business affairs serves, and the partner of industry net alliance also can be used in the ascendant be based on " 1P " academic tripartite pays cost mode, acquire the reasonable interest such as redound of sale of sale promotion, product, investment, accordingly, mode of industry net sale is expected to become afterwards in future after the member makes sale pattern another mainstream mode.

在他看来,由于行业网联盟模式汇聚了产业链上下游众多的环节,并可为传统企业提供包括域名注册、建站、信息推送、网络营销、在线互动、资质认证、交易匹配等在内的一站式电子商务服务,而行业网联盟的合作伙伴亦可利用方兴未艾的基于&1P&理论的第三方付费模式,获得营销推广、产品销售、投资回报等合理利益,因此,行业网营销模式在未来可望成为继会员制营销模式之后另一个主流模式。

The nonlinear mechanical model of contact between soil particles was established based on the effects of liquid bridges on mechanical microstructure of soil and the basic Distinct Element Method theory. The dynamic behaviors of dry soil ahead of the bulldozing plate with different cutting angles were simulated by DEM.

根据液桥对土壤微观力学结构的影响,在传统离散单元法理论的基础上,建立了土壤颗粒接触非线性力学模型,并对不同切土角推土板前端干土壤的动态行为进行了离散元模拟。

We present a general density evolution-based procedure which finds the optimal puncturing of a base code.

本节根据非规则码的密度进化理论推导出RC-LDPC码的密度进化公式。

The mathematical model by which the forming time can be precisely calculated is ratiocinated. This model shows that in SLS the scanning "delay" phenomenon can make the actual forming time greatly exceed the theoretical time, and the total number, total length of the scanning lines and the scanning speed have different effects on the scanning "delay".

本文推导出了SLS成型时间精确计算的数学模型,该模型显示在SLS加工中的扫描&延时&现象会造成实际成型时间远远大于理论时间,并且扫描线条数、扫描线总长和扫描速度对扫描&延时&有不同程度的影响。

This thesis collects 21 refurnishing work samples, using SPSS program and by means of regression analysis to estimate the generation coefficient for refurnishing waste, it's 0.139t/m2 or 0.231m3/m2 (assume the density of waste is 0.6t/m3), based on the building area. We can also use the coefficient mentioned above to calculate the theory quantity for refurnishing works.

有关装修工程营建废弃物产生量的推估模式,本研究经访谈业者,汇整筛选21笔装修工程样本数据,利用SPSS统计套装软体,以建物面积为基底,经回归分析得到装修工程营建废弃物产生系数为0.139 或0.231 (设废弃物密度为0.6 ),此系数可作为估算装修废弃物之「理论数量」的参考数据。

It indicates every literary work is a matter of convention and a reworking of old works.

6?1克丽斯蒂娃根据巴赫金的&对话性&和&复调&理论推演而来的,指文学本身存在着互涉关系,任何作品都存在着对传统文化的承袭和对以往作品的模仿。

Therefore, if we had not made any other changes, we figured the result would be just enough classes to bring the buffs, and then stacking the rest of the raid with very high dps classes like rouges.

要是我们继续坚持那个DPS理论的话,你们大概会带上一些只用来提供BUFF的人,然后剩下的全是DPS机器去推BOSS,比如盗贼。

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推荐网络例句

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。