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中国南海发现深水大气田 出气区块曾被外国公司放弃

2014-09-16 07:52:16   京华时报

981平台正常作业期间人员约有180人。海洋石油工人一个工作周期是28天。在平台上的28天中他们会远离家人,没有手机信号,与大海做伴。在平台上,办公室、宿舍、餐厅、卡拉OK、健身房等设施一应俱全,并可上网、收看电视节目等。

能抵御200年一遇台风

“海洋石油981”外形强壮,最大作业水深可达3000米,最大钻井深度10000米,还装备有8台4.4万千瓦柴油发电机,发电量差不多够一个中等城市所需。它的8个推进器,每个马力都相当于5个火车头的拉力。

以前如果遇到风暴、台风,一般是撤离平台,撤离时间根据作业水深有关,通常反应时间几十个小时,而981钻井平台则可以开着船走,最大航速可达到8节,反应时间快。

981平台能抵御200年一遇的台风,这相当于遭遇17级台风,能迎战南海恶劣海况。

组合定位成为定海神针

“海洋石油981”之所以能在海上风浪较大的深水区保持不动又准确无误地打井,是因为它首次采用动力定位和锚泊定位的组合定位系统。简单说,就是在1500米水深海区,用抛锚方式固定平台;在3000米水深海区,抛锚鞭长莫及,就采用动力定位,即在精确计算的基础上,靠8个推进器的反作用力抵消风、浪、流等对船体的作用力,达到平衡定位目的。这样二位一体的组合定位,国际上没有先例。该系统让“海洋石油981”成为惊涛骇浪中的“定海神针”,确保平台全天候作业。中海油深水钻井船工程项目组项目副总经理粟京表示,世界范围内,类似“海洋石油981”的平台大约有17到18艘。论综合能力,“海洋石油981”可以处于前三。

京华时报记者祝剑禾

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