Due to serious sensitivity to water and plugging by emulsification liquid, it was difficult to convert oil well to water injection well since water flood recovery in Zhangdian Oilfield.

张店油田进入注水开发以来，由于储层存在着严重的水敏、乳化液堵等伤害，致使油井转注较为困难。

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Aiming at the oil Wells, the test of water-flood huff and puff with single well is conducted for oil recovery.

针对这类油井进行单井注水吞吐采油试验，研究发现钻遇定容封闭性油藏的油井适合单井注水吞吐开采。

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Good recovery result had once been achieved by steam flood, however, because of invasion of edge and bottom water, the ultimate recovery factor of steam soaking is low.

蒸汽吞吐曾获得很好的开采效果，但由于边、底水的侵入，最终蒸汽吞吐采收率较低。

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Ms Bokova was impressed by the post-flood recovery works and was particularly interesting in learning about the plans for restoring the historic water management system of Ayutthaya, which had been put in place by the founders of the city but was later abandoned and covered by urban housing and street constructions.

UNESCO: MEDIA SERVICES