岩心收获率

40余套工具在胜利、中原、滇黔桂和华北等油田56口井的现场使用表明，平均岩心收获率达95.68%，平均单筒进尺达7.65m，单筒进尺指标提高了48.8%。

Application shows that , by using these tools , the average core recovery reaches 95 . 68 % , and the average core run up to 7 . 65m .

井身结构优化技术是示踪剂跟踪检测技术应用情况，该井岩心收获率达100%。密闭率91.8%。

The core recovery rate of this well is100 % and the sealing rate is91.8 % .

取心井段用双心钻头扩眼，可提高再取心时的岩心收获率；加深井钻进，用双心钻头可增大环空间隙，提高固井质量。

Higher core recovery is assisted in coring operations when this kind of bit is used for hole enlargement . Prolonged drilling of completed wells can extent the annulus of the hole and enhance cementing quality .

在随后的章节里，作者进一步分析了绳索取心系统对造斜井段的适宜性及提高岩心收获率的措施、连续造斜系统的结构等关键技术问题。

In the following chapters , the author further analyzed the key technology problems , such as the feasibility of using wire-line coring in deflecting hole 、 the methods to improve the recovery of coring rate and the construction of continuous deflecting system .