High conversion could be obtained by using the tail oil circulation process and other integrated processes.

采用尾油循环和其它组合工艺，可以得到较高的重渣油加氢转化率。

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The on-site drying method by using hot oil circulation and hot oil spray, its process and the operation result for large transformer are introduced.

介绍了采用热油循环及热油喷淋法现场干燥大型变压器的方法、过程和运行效果。

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In the exploitation process of Tahe oilfield, the phenomena of "blowout following loss circulation" appear for some oil Wells during work-over job.

前言：在塔河油田开发生产过程中，个别油井在修井作业中出现先漏后喷的现象。

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