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bow spring     
相关语句
  弓形弹簧
     PERFORMANCE CHARACTERISTIC OF CASING CENTRALIZER WITH DOUBLE BOW SPRING BLADE
     双弓形弹簧片套管扶正器性能特点
短句来源
     QUALITY RELIABILITY ANALYSIS OF BOW SPRING CASING CENTRALIZER
     弓形弹簧套管扶正器质量可靠性分析
短句来源
     Casing Centralizers with bow spring blade are the most used cementing tools.
     弓形弹簧片套管扶正器是使用量最多的固井工具。
短句来源
     Casing centralizer with double bow spring blade is modified from single bow.
     使用最普遍的是单弓形弹簧片套管扶正器。
短句来源
  相似匹配句对
     Spring.
     Spring)水提物中的化学成分。
短句来源
     Spring
     春
短句来源
     QUALITY RELIABILITY ANALYSIS OF BOW SPRING CASING CENTRALIZER
     弓形弹簧套管扶正器质量可靠性分析
短句来源
     PERFORMANCE CHARACTERISTIC OF CASING CENTRALIZER WITH DOUBLE BOW SPRING BLADE
     双弓形弹簧片套管扶正器性能特点
短句来源
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  bow spring
The tool is held against the side of the borehole by a bow spring to reduce the effects of variations in hole diameter.
      


Casing Centralizers with bow spring blade are the most used cementing tools.Casing centralizer with double bow spring blade is modified from single bow.It has advantages of both elasticity centralizer and rigid characteristic.It is ideal casing centralizer for both deflecting and horizontal well.

弓形弹簧片套管扶正器是使用量最多的固井工具。使用最普遍的是单弓形弹簧片套管扶正器。双弓形弹簧片套管扶正器是单弓形的变异,它既有弹性扶正器的优点,又有刚性的特点。双弓形弹簧片套管扶正器是斜井、水平井理想的套管扶正工具。

This paper introduces the installation method and effectiveness experiment of bow spring casing centralizer.On the basis of the experimental data and experimental results,the quality reliability of bow spring casing centralizer is analysed.The results show that the centralizers adopting fixed ring or straddle collar installation has higher reliability.Meanwhile,some matters needing attention on production and design of casing centralizer are proposed.$

介绍弓形弹簧套管扶正器的安装方式及失效试验 ,通过对得到的试验数据和试验结果进行质量可靠性分析 ,得出采用固定环或跨接箍安装的扶正器可靠性较高的认识 ,同时也指出了在套管扶正器的生产和使用中应注意的一些问题。

The target of good interface cementation quality may be realized by drilling properly, controlling properties of drilling fluid, pad fluid and MTC slurry in good condition, ensuring stable hole, smooth well trajectory, high displacement rate and solidified mud cake as preconditions. Details are as follows: 1) drilling measures. In the vertical section, the hole should be drilled straightly without any inclination; in the deflecting section, the inclination should increase steadly, with no inclination more than...

The target of good interface cementation quality may be realized by drilling properly, controlling properties of drilling fluid, pad fluid and MTC slurry in good condition, ensuring stable hole, smooth well trajectory, high displacement rate and solidified mud cake as preconditions. Details are as follows: 1) drilling measures. In the vertical section, the hole should be drilled straightly without any inclination; in the deflecting section, the inclination should increase steadly, with no inclination more than 5°/30 m or dog-leg degree no more than 3°/10 m; try to drill the hole trajectory as smooth as possible, use approximate balanced drilling technology and control the filtrate less than 5 mL to ensure the hole in good condition. 2) drilling fluid. Polycol-MMH drilling fluid is recommended, because it has prominent inhibition and anti-collapse properties. 3) Cementing. Employ some surfactant to reverse the wetting characteristic of the well wall prior to cementing; centralize the casing by using dual-bow spring centralizer, rotate and move casings up and down after casing and during cementing operation; use flushing fluid(+CMC solution + additives) as the pad fluid, and prolong the interacting time of the pad fluid and the formation to more than 7 min; add enhancing agent PZW in the cementing slurry to make the slurry condensate in right-angle-thickening style. Above measures were verified successful with VDL logging result of 100% qualification rate in the second interface.

通过控制钻井措施、钻井液和前置液以及固井液性能 ,保证井身质量、井眼轨迹平滑、顶替效率高、固化井壁泥饼等 ,可以达到提高二界面胶结质量的目的。在钻井措施方面 :直井段要防斜打直 ,造斜段要增斜平稳 ,避免井斜度大于 5°/ 30m以及狗腿度大于 3°/ 10m ,使井眼轨迹平滑 ;使用近平衡技术钻井 ,并控制滤失量小于 5mL ,保证井壁稳定。在钻井液方面 :建议使用聚合醇 正电胶钻井液 ,因为该体系有很好的抑制防塌性和较强的降滤失性 ,能很好地防止缩径、垮塌掉块。固井方面 :在固井前使用表面活性剂使井壁润湿反转 ;通过加双弓弹簧扶正器提高套管居中度 ;在下完套管大排量循环时及在固井时均要上下活动套管 ;用冲洗液 +CMC溶液 +药水作为前置液 ,该前置液对井壁疏松泥饼具有一定的浸透力 ,将前置液与地层的接触时间提高到 7min以上 ;在固井液中加入PZW增强剂 ,使水泥浆直角稠化 ,并要求矿渣浆凝结顺序为从下到上和保持正压差。通过实施以上几个方面的措施 ,收到了良好的效果 ,VDL电测显示第二界面合格率达 10 0 %。

 
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