The reservoir heterogeneity controlling the increase of swept volume of water flooding ;

3储层非均质性制约水驱 波及 体积的提高；

In machining process simulation the cutter 's swept volume represented by the swept polygon of the cutter 's profile is to simplify the complexity of material removal simulation .

在虚拟加工中，刀具 扫描 体被简化表示为刀具扫描体轮廓多边形，简化了仿真计算。

Pressure transient test in steam injection well is an inexpensive and effective means to determine swept volume and flowing condition of the steam zone .

注蒸汽井压力降落试并是确定蒸汽 波及 体积和了解 波及区流动情况的一种经济、有效的方法。

It has great significance to enhance oil recovery of the reservoir and ensure sustainable development of the oil field by enlarging water flooding swept volume slowing down production decrement and water-cut increase during intermediary and later development stage of the oil field .

这对于油藏注水开发中后期扩大油层 波及 体积，减缓水驱开发区块的产量递减速度和含水上升速度，提高区块采收率，确保油田可持续发展具有重要的现实意义。

A novel algorithm based on envelop theory and B-rep modeling technique was proposed aiming at the difficulties of swept volume solid modeling for manufacturing .

以实体造型仿真和工程应用为目的，基于包络理论和边界描述实体造型法，提出了旋转 体在连续路径下进行 扫描实体造型的一种新方法。

The Z-map models of workpiece and tool swept volume are established by an intersection algorithm between line and free-form surface and then update of the workpiece is realized by a boolean operation between workpiece Z-map model and tool swept volume Z-map model .

利用直线与自由曲面的求交算法实现了工件曲面和刀具扫描体曲面 Z-map模型的建立，将两个Z-map模型进行布尔运算完成了工件曲面Z-map模型的更新。

During thermal recovery to estimate swept volume with pressure fall off test is very important while hest loss effect of the formation can not be ignored during analysis of pressure fall off test .

在热采项目中用压力降试井来估算 蒸汽 波及 体积是非常重要的，而地层中热损效应在压力降试井分析中又是不可忽略的。

The Research and Realization on Geometric Modelling of Swept Volume

扫描 体几何造型的研究与实现

Results show that well pattern infilling could improve the swept volume in the low-permeability layer .

结果表明，对于低渗层，井网加密的办法可大幅度扩大低渗层的 波及 体积，提高低渗层的采收率。

In the paper the calculating of swept volume is divided into two phases : the phase of determining of candidate boundaries of the swept volume and the phase of the trimming of candidate boundaries .

笔者将 扫描 体的求解过程分为两个阶段：扫描体候选边界的确定以及扫描体边界的整理。

A large number of analytical data is extracted from well-designed experiments with which the influence of the generator simplification and the trajectory resample to the last swept volume is analyzed .

通过大量实验数据，着重分析了 扫描母体的简化和利用活动标架对 扫描路径进行重采样两个步骤对 扫描 体逼近的影响。

Finally the examples of solid swept volume are presented .

最后给出了 扫 掠 体的生成实例。

Based on research for NC machining simulation and verification we introduce a new approach-swept volume equation ( SAE ) which transfers calculation of swept volume into solution of an algebraic equation and thus calculation of swept volume of revolving solid is settled .

对于数控加工中的NC代码验证和加工仿真算法进行了研究，提出了扫描体代数方程（SAE），将 扫描 体的计算问题转化为代数方程的求解问题，解决了旋转体的扫描体的计算。

Based on envelope theory the modeling method of cutter swept volume swept envelope and instantaneous swept profile is proposed by the analysis of cutter swept volume forming process .

通过对刀具运动扫掠体形成过程的分析，根据包络理论，提出了刀具 扫 掠 体、包络面及瞬时轮廓线的建模方法，利用刀具瞬时轮廓线完成刀具扫掠体的建模。

In order to improve the speed of NC simulation system based on the compressed voxel model it introduces the multi-thread mechanism to accelerate the calculation and puts emphasis on dispersing of the swept volume .

针对基于压缩体素模型的5坐标数控加工仿真系统中仿真速度较慢的问题，引入了多线程的并行处理方法，重点研究 了 扫描 体离散的并行处理。

New generation algorithm of tool swept volume and it 's application of NC machining simulation

刀具 扫描 体生成新算法及在数控加工仿真中的应用

ISF can also largely improve production injection ratio of steam flood and achieve the depressurization production mechanism of steam flood so that steam specific volume steam swept volume steam quality and heat utilization efficiency are all increased .

同时，间歇蒸汽驱可大幅度提高蒸汽驱采注比，实现蒸汽驱过程中降压开采机理：蒸汽比容增大，增加了蒸汽 波及 体积，使蒸汽干度、热利用率得以提高。

In 5 axis machining accuracy verification of sculptured surface the intersection of normal vector on meshes of designed part with the tool swept volume is a difficult point .

在曲面的加工精度检验中，设计工件曲面的表面法矢量和刀具 扫描 体的求交算法是个难点。

A new generation algorithm of tool swept volume is introduced .

介绍一种新的刀具 扫描 体生成算法。

The intraformational heterogeneity controls and affects the swept volume of the injectant in single sand layer directly determines the waterflood efficiency and is the key factor influencing the distribution of the remaining oil .

层内非均质性控制和影响单砂层内注入剂 波及 体积，直接决定水驱效率，是影响层内剩余油分布的关键因素；

In this field the construction of swept volume of cutters have a key role to play especially in the simulation of NC milling machining .

实体数控仿真具有重要意义，刀具 扫 掠 体构造是实体数控铣削仿真的重要环节。

This paper presents a method of approximating swept volume of NURBS surfaces or solids .

提供了一种NURBS 扫描 体的逼近方法。

Intermittent steam injection can increase the specific volume swept volume and utilization ratio of heat and can improve formation of seepage in oil reservoir so as to improve flooding effect .

间歇注汽法可提高蒸汽比容，提高蒸汽 波及 体积和热利用率，改善油层渗流特征，达到改善驱油效果的目的。

Cyclic water injection increases swept volume through oil-water percolation effect and capillary pressure effect to improve water drive recovery factor .

周期注水技术主要是通过油水交渗效应、毛管压力作用，增加 注 水波及 体积，从而提高水驱采收率的技术。

Construction and Display of Tool Swept Volume in 5-Axis Machining

五轴加工中刀具 扫描 体的构造和显示

When can compact car with small swept volume welcome in spring ?

小 排量汽车何时迎来春天？

The work piece model applying the Z-map modeling method and the machining process model using the cutting off material method by tool swept volume is researched .

应用Z-map建模方法建立了虚拟工件模型；应用刀具 扫描 体材料去除原理建立了工件的切削加工过程模型。

After two and a half of regulation steam flooding pilot test achieved good results and formed a plan of steam flooding technology dynamic control limits of ultra-heavy oil for improving the steam swept volume and prevent steam breakthrough .

经过两年半的调控，蒸汽驱先导试验取得了较好的效果，并形成了一套提高蒸汽 波及 体积和防止蒸汽突破的超稠油蒸汽驱动态调控技术界限。