查询词典 permeability

The testing results show that the core porosity, permeability, compressibility of low-permeability core are sensitive to confined pressure, and there are exponential degression relation among them.

研究结果表明，低渗岩心渗透率、孔隙度及压缩系数对有效应力变化较为敏感，随着有效应力的增大呈指数递减。

Numerical model tests show that the method proposed by this paper is as accurate as nine-point finite-difference when permeability tensor is in diagonal form, and it can simulate more complicated cases when permeability is in full-tensor form.

CVFE网格是非正交网格，本文混合运用有限差分和有限元方法计算折算压力梯度，得到与有限差分和PEBI网格不同的离散形式，提出了根据流量符号判定上游的方法，使模型更为合理。

Numerical model tests show that the method proposed by this paper is as accurate as nine-point finite-difference when permeability tensor is in diagonal form, and it can simulate more complicated cases when permeability is in full-tensor form. Its application prospect is more extensive in fine detailed reservoir simulation.

模型计算表明，对于形式简单的对角渗透率张量，本文方法可以与九点差分格式相比，精度是可靠的，并且该方法还能模拟完全各向异性渗透率张量，对于精细油藏数值模拟，其应用范围将更为广泛。

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。

In Xing shu gang oil-field, low permeability, weak physical characteristic, high content of clay cause serious formation damage. On research of the study of low permeability formation and damage characteristic of Xing shu gang oilfield, we acquire why the injection wells have problems of little hygroscope thickness and low hygroscope capacity.

本文针对杏树岗油田薄差层渗透率低、物性差、粘土含量高、吸水能力较差的问题，通过对杏树岗油田薄差层储层敏感性评价和储层伤害机理的研究，详细分析了造成该油田注水井吸水能力较差的原因。

With the increase of permeability ratio and advancement of inversion opportunity, the cumulative imbibition rate of low-permeability layer decreases.

摘要利用室内并联岩心物理模拟实验及渗流力学的基本定律，对聚合物驱油过程中的剖面返转规律及返转机理的研究表明，油层非均质性是剖面返转的主要原因，随着渗透率级差的增大及返转时机提前，低渗透层累积吸液比例下降。

This model can describe the linear Darcy s flow and the nonlinear flows including low-permeability and high-permeability flow in fracture.

该模型可用于双重介质或单重介质地层压裂前后生产动态的模拟，既能描述线性的达西渗流现象，又能描述低渗透和高渗透两种情况下的非线性渗流问题。

In this paper, the reasons leading to poor development effects of Chaoyanggou low-permeability oilfield are analyzed, the relational expressions between recovery efficiency and well spacing density, considering the start-up pressure, are given. In the paper, the water flooding control degree, lower limit of reservoir permeability, effectively driving factor, and other parameters are studied, and their influence on the well spacing density is presented.

中文摘要：摘要：本文分析了大庆朝阳沟低渗透油田开发效果差的主要原因，给出了考虑启动压力条件下，采收率与井网密度的关系式；研究了水驱控制程度、油藏渗透率下限、有效驱动系数等参数对井网密度的影响；确定了朝阳沟油田合理井网密度界限。

High magnetic permeability material owns a lot of features,for example:highly initial permeability,high stability and excellent impedance characteristics.

高磁导率材料，具有高起始磁导率、高稳定性的特点，并且具有良好的阻抗特性。

The results of laboratory reconstituted permeability tests show that the permeability coefficient of remolded marlite samples is greater than that of the reconstituted clay rock when their dry densities are the same with natural water content.

室内重塑渗透试验结果表明：天然含水率下相同干密度的重塑泥灰岩的渗透系数大于黏土岩，其渗透系数随干密度的增大而减小的速率小于黏土岩，且测得重塑膨胀岩样渗透系数均小于场地的原位渗透系数。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。