长度因次

The study shows that the pressure transient curve of fractured wells in closed circular formation can be divided into six different flow regimes. In condition of the same fracture opening width and fracture length, compared to rectangular fracture, the pressure drop with tapered fracture is bigger, and the dimensionless pressure and pressure derivative curves are higher. In condition of the same fracture opening permeability, compared to linear declining and constant conductivity fractures, the pressure drop with exponential declining conductivity fracture is the biggest, and the dimensionless pressure and pressure derivative curves are the highest.

研究结果表明：圆形封闭地层压裂井的压力动态曲线可以划分为6个流动阶段；在相同裂缝开口宽度和相同裂缝长度的条件下，与矩形裂缝相比，楔形裂缝压力消耗大，表现为无因次压力及压力导数曲线越高；在相同裂缝开口渗透率的条件下，与导流能力呈线性降低的裂缝以及常导流能力裂缝相比，导流能力呈幂指数降低的裂缝压力消耗最大，表现为无因次压力及压力导数曲线最高。

Breed of terrier known for its superb senses of sight, hearing, and smell while hunting fox, weasel, European polecat, otter, badger, rat, and other small game; medium-length coat is slightly curly, hard, wiry, and dense; it is black and tan and often comes in a saddle pattern; ears are set high on head and fold forward in a V-shape; tail is thick, short, and carried erect; eyes are small, dark, and sparkling; adult stands 22 23 in.(56 58 cm) tall at shoulders and weighs 40 50 lbs (18 23 kg); dutiful and courageous demeanor yet with a sweet disposition toward children and its master; served the Red Cross during World War I and World War II to locate wounded soldiers and carry messages; developed by Yorkshire hunting class to be used on river-valley hunting jaunts

艾尔谷犬是小猎犬的一支，因其在追踪狐狸、黄鼠狼、欧洲臭鼬、水獭、灌熊，老鼠，和其他小家伙中表现出来的卓越的视觉，听觉和嗅觉而为人所知；适中长度的毛发轻微的卷曲，坚硬，结实而密；耳朵长在脑袋上部，向前笼罩成"V"型；尾巴厚、短、坚挺；眼睛小、暗、机智；成年站立肩高56—58厘米，重18—23公斤；举止顺从、无畏，对于主人和孩子有着可爱的个性；跟随红十字会服务于第一、二次世界大战搜寻伤员，传递信息；艾尔谷小猎犬是由约克郡的猎户改良出来，用于在河谷中的短途打猎旅行。

Theequivalence percolation resistance law is accurate enough to be used in productivitycalculation of horizontal well pattern.(3) Productivity of mixed well pattern of horizontalwell or multilateral horizontal well and vertical well is constructed and formulae are simpleenough to be used in the oilfield. The patterns include 5-spot pattern,7-spot pattern and9-spot pattern.(4) Productivity formula of united rectangular well pattern of horizontaland vertical wells is constructed. By this formula, the calculation results show that fora horizontal well length, there is a shape factor at which the productivity of the patternis biggest. So optimum method of the well pattern is proposed.(5) A new concept ofdimensionless length of horizontal well is advanced and the relationship of optimum shapefactor of the rectangular well pattern against dimensionless length of horizontal well ispresented. The influences of length of the horizontal well, area of the well pattern unitand the thickness of reservior are concerned.

利用该公式计算表明：当水平井长度一定时，存在一个最优井网形状，使得水平井的产能最大，在此基础上提出了水平井井网的优化方法；(5)提出了水平井无因次长度的概念，给出了联合井网最优井网形状因子与水平井无因次长度的关系式，并对水平井长度、油层厚度及井网面积对产能的影响进行了分析；(6)推导出了一无限水平井井排在XY 平面内势的解析解，为不同水平井整体开发井网或水平井和直井井网整体开发渗流理论的研究奠定了理论基础；(7)建立了交错式水平井与直井整体开发渗流理论，给出了拟三维条件下井网产能的精确解析解及该井网最优井网形状因子与水平井无因次长度的关系，并对产能的影响因素进行了分析；(8)建立了水平井与水平井正排列井网、交错排列井网条件下渗流理论及井网产能在拟三维条件下的精确解析解，给出了交错井网条件下最优井网形状因子与水平井无因次长度的关系，通过与正方形井网对比，说明优化井网可大幅度提高开采效果；(9)建立了分支水平井和直井面积井网水油两相非活塞驱替条件下渗流问题的解析解，给出了见水前后无因次产量与无因次时间的关系式以及见水时间等。

The velocity vectors of the flow field are also calculated. Finally, on the basis of experimental data and dimensional analysis, the effects of Reynold number and Froude number on the reattachment length decreases as Re or Fr increases, and the regression formulas are following

最后将实验数据及参数加以无因次分析，探讨雷诺数及福禄数对复合长度之影响，发现无因次复合长度随著雷诺数及福禄数之增加而减短，其回归公式如下

It analyses the characterization of typical type curve and the influential factor of well-test curve ,which includes non-dimensional offsetting, non-dimensional length of horizontal welk equivalency pressure point, interporosity flow coefficient, storativity ratio and the boundary condition.

分析了双重介质水平井典型曲线特征以及影响水平井试井曲线特征的因素，得到了其影响因素主要有无因次偏心距、无因次水平井长度、等价压力点、储能系数、窜流系数以及油藏的边界条件。

The arrangement of braces is X type. The braces is H175x175x11x7.5, same as the second test of TCBF. Because of additional knife plates, the braces length in this test is a little shorter than the second TCBF test. The gusset plate design use the UFM instead of ellipse bending design method.

试体高6.66公尺，宽6.7公尺，斜撑排列形式为大X形，斜撑尺寸为H175x175x11x7.5，与第二次TCBF试验采用之斜撑相同，但本研究因需配置额外的连接板而使得斜撑长度略短，接合板则采用规范建议之UFM进行设计，与第二次TCBF椭圆形凹折设计不同。

Breed of terrier known for its superb senses of sight, hearing, and smell while hunting fox, weasel, European polecat, otter, badger, rat, and other small game; medium-length coat is slightly curly, hard, wiry, and dense; it is black and tan and often comes in a saddle pattern; ears are set high on head and fold forward in a V-shape; tail is thick, short, and carried erect; eyes are small, dark, and sparkling; adult stands 22 23 in.(56 58 cm) tall at shoulders and weighs 40 50 lbs (18 23 kg); dutiful and courageous demeanor yet with a sweet disposition toward children and its master; served the Red Cross during World War I and World War II to locate wounded soldiers and carry messages; developed by Yorkshire hunting class to be used on river-valley hunting jaunts

艾尔谷犬是小猎犬的一支，因其在追踪狐狸、黄鼠狼、欧洲臭鼬、水獭、灌熊，老鼠，和其他小家伙中表现出来的卓越的视觉，听觉和嗅觉而为人所知；适中长度的毛发轻微的卷曲，坚硬，结实而密；耳朵长在脑袋上部，向前笼罩成&V&型；尾巴厚、短、坚挺；眼睛小、暗、机智；成年站立肩高56—58厘米，重18—23公斤；举止顺从、无畏，对于主人和孩子有着可爱的个性；跟随红十字会服务于第一、二次世界大战搜寻伤员，传递信息；艾尔谷小猎犬是由约克郡的猎户改良出来，用于在河谷中的短途打猎旅行。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。