1) double-packer
双封
1.
Retrievable double-packer recovery string technology is a new one developed upon needs for reperforation, recovery of another payzone, machinery blocking water and some other stimulation in deep wells.
可取式双封采油管柱技术是在深层油田补孔改层、机械卡堵水等增产措施条件要求下开发出来的一种新技术。
2) single stage double plugging
单级双封
1.
The contradiction between cement density,cementing quality and leak in the hole can be solved by using the technology of single stage double plugging.
为提高固井质量,保证各开套管安全下送到位,采用内插法固井解决了超大套管固井的窜槽问题;采用单级双封固井工艺解决了超长易漏封固段固井质量、水泥浆密度与漏失的矛盾;采用先悬挂后回接的固井工艺实现超长管柱固井作业;采用塑性防窜超低密度水泥浆体系解决了恶性漏失地层的固井漏失问题;采用防塌、防气窜、抗高温水泥浆体系,解决了超深井段所固有的超高压、超高温引发的固井难题。
3) double seals
双重密封
1.
Aimed at the insufficient seal problems of monolayer mechanical seal and flexible seal, the double seals are applied in four 5×104 floating roof ta nks at Zhenhai station and Baishawan stationof Yong-Hu-Ning crude oil pipeline.
针对浮顶油罐单层机械密封和软密封存在的不足,在甬-沪-宁原油管道镇海、白沙湾等站场新建的4座10万m3浮顶油罐上采用了双重密封。
5) Double Seal Dam
双密封坝
6) dual-sealing
双道密封
补充资料：登封窑珍珠地双虎纹瓶
登封窑珍珠地双虎纹瓶 宋代登封窑瓷器精品。北京故宫博物院藏。高31.9厘米。侈口圆唇，颈短细，腹体呈橄榄型，平底，制作规整，线条优美。灰褐胎，上施白色化妆土。饰以两只猛虎，搏斗于草丛中，花纹空隙处满划珍珠纹铺地。上罩以白釉。珍珠地划花瓷器，为登封窑名产，河南其它地方也争相仿效。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条