助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   polymeric fragment 的翻译结果: 查询用时:0.007秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

polymeric fragment
相关语句
  聚合物降解产物
     Polymeric Fragment Damage and Polymeric Linkage-Specific Enzyme Breaker Technology
     聚合物降解产物伤害与糖甙键特异酶破胶技术
短句来源
  相似匹配句对
     The Polymeric Effect
     高分子效应
短句来源
     Polymeric Flocculants
     高分子絮凝剂
短句来源
     Polymeric Fragment Damage and Polymeric Linkage-Specific Enzyme Breaker Technology
     聚合物降解产物伤害与糖甙键特异酶破胶技术
短句来源
     DNA fragment were analyzed.
     做DNA片段分析 ;
短句来源
     Result The inserted fragment from E.
     结果发现阳性克隆茵E.
查询“polymeric fragment”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  polymeric fragment
The negative ion mass spectrum and the enlargements given in figures III B and C show different series of polymeric fragment ions.
      


The formation damage caused by polysaccharides in well drilling and completion and in hydrofracturing operations, in particular, and the methods of gel breakdown and polymer damage removal by using polymeric linkage-specific enzymes (LSEs) are reviewed. The 1st part of the article introduces the polymeric fragment damage and shows that low viscosity of brocken-down fluids does not indicate the fullness of backflow of the fluids from fracture packs, oxidizing and common enzyme breakers do not degrade the...

The formation damage caused by polysaccharides in well drilling and completion and in hydrofracturing operations, in particular, and the methods of gel breakdown and polymer damage removal by using polymeric linkage-specific enzymes (LSEs) are reviewed. The 1st part of the article introduces the polymeric fragment damage and shows that low viscosity of brocken-down fluids does not indicate the fullness of backflow of the fluids from fracture packs, oxidizing and common enzyme breakers do not degrade the polysaccharide sufficiently and high molar mass, water-insoluble degradation products create damages; for removing such damages, various glycosyl hydrolases can be used as gel breaker or damage removal agent. The 2nd part presents the mechanisms of degrading polysaccharides (celluloses, starches and guar). The 3rd part describes the methods and results of evaluating LSEs, mainly for guar and its derivatives: core flow tests, total carbohydrate content and molar mass determinations, and fracture conductivity test. The 4th part presents the field uses of LSEs for damage removal and as gel breaker: well selection; technologic aspects; and three well cases.

综述了钻井、完井、尤其是水力压裂作业中产生的多糖类聚合物伤害和应用糖甙键特异酶破胶、解除多糖类聚合物伤害的技术。第一节报道了聚合物降解产物造成的伤害 ,指出冻胶破胶液粘度低并不代表压裂液已从充填裂缝中充分返排 ,氧化破胶剂和普通酶破胶剂不能使多糖类聚合物充分降解 ,产生的大分子量的、水不溶的降解产物可对地层造成伤害 ,消除伤害的办法是采用对糖甙键有特异性的各种水解酶作压裂液破胶剂或伤害地层处理剂。第二节报道了各种聚合物 (纤维素、瓜尔胶、淀粉 )糖甙键特异酶降解聚合物的机理。第三节报道了糖甙键特异酶 (主要针对瓜尔胶 )的应用性能测试及结果 ,包括岩心流动实验、含糖量和分子量测定、传导性测试。第四节介绍了糖甙键特异酶消除聚合物伤害和用作压裂液破胶剂的现场应用 ,包括选井原则、实施工艺要点及 3个典型井例。

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关polymeric fragment的内容
在知识搜索中查有关polymeric fragment的内容
在数字搜索中查有关polymeric fragment的内容
在概念知识元中查有关polymeric fragment的内容
在学术趋势中查有关polymeric fragment的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社