应用于钻井和完井系统、钻井四通、采油树、油管头和管汇。
Should be used for well drilling sum finish well system, well drilling Sitong, Christmas tree, Oil pipe head sum administer remit.
第四，在美国，想靠疯狂的钻井机们致富的话，它们四通八达的管道如蜘蛛网般，所以能输送天然气到市场上。
And fourth, in America wildcat drillers, if they strike it rich, enjoy access to a spider's web of existing pipelines, so they can get their gas to market.
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