介绍了川合139井各井段钻井施工难点及主要技术措施。

This paper presented the drilling problems and main techniques in each interval of Chuanhe 139 Well.

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本文通过分析川合100井的油管腐蚀实例，认为CO_2是腐蚀的主要原因。并提出了预防腐蚀的方法。

On the basis of the example of pipes corrosion in Chuanhe Well-100, the author considers the corrosion is mainly caused by CO_2 through analysing, and puts forward the method of preventive corrosion.

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20岁的川合光是这套文胸的模特。她说：“我仔细地读完了每一句话，我知道了世界上所有人都在支持我们。”

"I read each message myself, and I realized that everyone around the world is sending their support," said 20-year-old Hikaru Kawai, who modeled the outfit.

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