They hashed out the problem of drilling in great depth.
他们经过长时间的讨论解决了深层钻井问题。
Stop for 15-40min (depending on the depth of holes) after completion of drilling, and use the drilling rig to get out the impurities such as sand, etc. settled without controlling the mud.
钻进完成后，停15-40分钟后，（根据孔深决定时间）用钻机打捞一次沉降下去的砂子等杂质，不要控浆。
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