property of zg35crmo ( m) for oil production wellhead valve body

after an analysis of the disadvantages of the three types of casing heads-the annular plate, the simple and the normal casing heads, the st lock tightened casing head was innovated by huabei oilfield.

通过对环形钢板、简易套管头和正规套管头三种井口装置在使用过程中弊病的分析，华北油田研制成ST锁紧式套管头。

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fourth, esd emergency shut-down valve is set between manifold and well head, which can be used for instant shut in.

④在流程管汇与井口之间设置了ESD紧急关闭阀，可实现瞬时关井。

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model for prediction of crude oil water content at wellhead metering based on cpn neural network

基于CPN网络井口计量原油含水率预测模型

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fpso is neither a ship nor a wellhead platform.

FPSO既不同于船，也不同于井口平台。

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by data processing, p-wave seismic section, ps-wave seismic section can be attained and also the layer attribute can be extracted.

通过资料处理，可以得到井口附近的一段高分辨率的P波地震剖面、PS波地震剖面，也可以提取地层属性参数。

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research and development of high-pressure filter elements for pe well

PE井口高压滤芯的研究与开发

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a strong pull brought one bucket to the top while the other down to the water ．

用力一拉，一只桶就会被提到井口，另一只则会落入井水里。

中考真题- 2017 安徽 任务型阅读

analysis on ansys in shell masonry structure of single arched pithead

地下圆拱式单井口砌体薄壳结构的有限元分析

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the rate for an urgent call is twice that of an ordinary call. but the supplementary charge is not doubled.

加急电话的资费是普通电话的两倍，但是附加费不加倍。

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first we present graph theory model to problem 1, and conclude that the most wells we can use are four old ones, while using the rectangle diagonal method to problem 2, the number comes to six.

利用矩形对角线法对问题2得出最多可利用6口旧井，井号为1、6、7、8、9、11。

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the spherical magnetic mineral grains within sample 6 from b well-1 are authigenic magnetite which formed under geochemical conditions of hydrocarbon migration.

BI井6号样品中发现的典型球状磁性矿物是在烃聚集的地球化学环境中形成的自生磁铁矿。

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linking to a specific section is possible, too. just add the section name behind a hash character as known from html. this links to this section.

链接到一个特殊的区块也是可以的。仅仅在井号之后加上这个区块的名字。这个链接指向这个区块。

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kondo is not part of a breed of alpha-organizers bent on dominating the world, despite her hashtag.

尽管有那样的井号标签，但近藤并不是那种一心主导世界的顶级组织者。

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weighted sharp functions and their applications

加权井号函数及其应用

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formation fluid properties include: the sampled well name;

地层流体性质包括：取样井号；

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a more typical solution is to display the username, hostname, directory, and the dollar or hash sign, depending on the uid of the current user.

更典型的解决方案是显示用户名、主机名、目录，以及美元符号或井号（具体取决于当前用户的UID）。

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it finishes measure management, accident management, well survey management, press survey management, inspection cost management, data and report-forms disposal of well number management. these are demanded by the system.

完成了系统要求的措施管理、事故管理、测井管理、测压管理、监测费用管理、井号管理数据处理和报表处理。

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by using powerbuilder 7, inquiry through a clue of combination of conditions including structural tree, strati graphic tree, well number tree and sample number tree is realized, which meets the thinking way of geologists.

以构造树、地层树、井号树、样品编号树为数据导航线索，利用PowerBuilder7数据库开发工具，设计了符合地质人员思维观念和使用习惯的树状组合条件查询。

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the results show that the temperature rise of fluid co2 is little because of insulation measures like insulated tubing and n2 in casing annular and the temperature of co2 arriving bottom hole has larger difference as different injection rate.

计算结果表明，由于注入时间较短，且注入过程中采取使用隔热油管、环空内充氮气等保温措施，液态CO2温升较小；随着注入速度的变化，液态CO2到达井底的温度相差较大。

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using mohr coulomb criteria, the sand production model is founded. the calculating method of the critical fluid pressure of bottom hole is given.

根据Mohr-Coulomb准则，建立了相应的出砂预测模型，给出油井出砂时临界井底流压的计算方法。

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