多分支

According to mechanism of ECBM/CO2 sequestration, a mathematical model was developed. In the mathematical model, two-phase flow, multiple gas components and mixed gas sorption, impact of coal matrix shrinkage and swelling on permeability, pressure loss in wellbore were studied.

给出了多分支井模拟CO2注入开采数学模型，模型考虑了气水两相流动、多组分气体吸附、煤基质膨胀和收缩对渗透率的影响以及分支水平井井筒压降；根据数学模型得到了相应的数值模型和计算程序，进行了模拟计算对比。

Of course, the JMP only gets executed if the condition is satisfied.

识别多分支条件代码块的基本方法与上一节中识别双分支条件代码的方法是基本一致的。

Pinnate horizontal multilateral wells have great potential in the exploitation of coalbed methane, the result of which lies in well pattern optimization.

羽状多分支井在煤层气开采中具有巨大的潜力，其井型的优化布置是多分支井成功开发煤层气的关键。

Analytic branch amount and branch angle are right produce can influence discovery: Mi Qian is planted increase of number of branch of? of You of that a pavilion or house on a terrace of joyous ǖ of Сざ sew, produce can reduce somewhat, think branch well should not seek overmuch branch amount, with 2~3 branch is advisable; branch angle increases, the yield of much branch well also can increase, but addition extent decrescent.

分析分支数目和分支角度对产能的影响发现：在总分支长度一定的情况下，分支数目增多，产能略有降低，认为分支井不应追求过多的分支数目，以2~3个分支为宜；分支角度增大，多分支井的产能也增大，但增加的幅度变小。

Therefore, based on numerical calculation of a multibranch well's productivity, the influences of the branch angle, branch interspaces and branch length on the gas yield are investigated. The results show that a.

为此，以多分支井产能数值计算方法为基础，研究了多分支井的分支角度、分支间距和分支长度对产能的影响。

Based on this model, the impact is analyzed of the branch wellbore parameters, including the length, angle and number, on the productivity of multibranch horizontal gas wells.

利用该模型分析了气藏中多分支水平井井型参数（分支长度、分支角度、分支数目）对单井产能的影响。

For a higher yield, the multibranch well bore should be perpendicular to the direction of maximum principal permeability, b. for a given coalbed methane reservoir, there is an optimal interspace, by which a bigger control area and the interaction among the branches can be obtained, and c. with the extension of the branch, gas yield becomes obviously higher, while the branch length should be an appropriate value on account of the influence of coal bed boundary and wellbore pressure drop. The research results have guiding significance for well pattern optimization and efficient development of coalbed methane gas.

结果发现：为了获得较高的产能，多分支井的井筒应垂直于最大主渗透率方向；对于给定的煤层气藏，存在一个最优的分支间距，既能保证较大的控制面积，又能保证分支间的互相影响；随着分支长度的增高，产气量也显著增大，但是考虑到煤层边界和井筒压降的影响，分支长度也应该有一个比较合理的值。

The algorithm encodes the XML document and XML query tree, disjoints the multiple branch pathes into single paths, queries the singe paths and uses the stack to match the single pathes which have the same ancestors in the process of matching the single paths to the multiple branch pathes.

该算法首先对XML文档树进行编码，然后对多分支路径各结点进行编号，编号后将多分支路径拆分成单路径并对单路径进行查询，利用栈匹配具有共同祖先结点的单路径查询结果，最后得到多分支路径查询结果。

Therefore, based on numerical calculation of a multi-branch well's productivity, the influences of the branch angle, branch interspaces and branch length on the gas yield are investigated. The results show that a.

为此，以多分支井产能数值计算方法为基础，研究了多分支井的分支角度、分支间距和分支长度对产能的影响。

In order to solve the above problems, a scalable multicast routing protocol with QoS constraints is proposed in this dissertation at first. It could absolutely make distributed computering into realization and then solve the problems successfully by the integration with local search and global search、single-branch search and multi-branch search.

本文从研究现有多播通信模型以及QoS约束的多播路由协议和算法出发，首先提出了可扩展的QoS多播路由协议MRPQoS(Multicast Routing Protocol with QoS constraints)，它将局部搜索与全局搜索、多分支搜索与单分支搜索有机的结合在一起，有效解决了同类协议消息复杂度高、寻路成功率低以及连接建立时间比较长等问题。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失