The selection and master design of guide drill tool are important problems usually met by field drilling operator and manufacturer.

导向钻具的选型与总体设计，是现场钻井工作者与制造厂家经常碰到的重要问题。

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Of course, Doug is ignoring that while drilling, the operator temporarily lost control of the well and a flare occurred that lasted over two hours, a pretty good sign that a lot of gas was flowing up the well.

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Think about what this advancement has meant just in terms of access to the resources: When drilling into a hydrocarbon bearing formation 100 feet thick, vertical drilling would allow an operator to contact 100 feet of rock, which would limit your potential recovery to whatever oil or gas would flow into that length of pipe.

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It is increasing its interest in properties it knows well because it is the operator controlling the drilling in most of them.

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