... 可钻式封隔器 drillable packer 钻头行程 drill bit run 钻井钢丝绳 drill cable ...
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drill bit run
钻头行程
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Then a few more hundred feet is drilled with a narrower drill bit and then the narrower casing is run and cemented in.
FORBES: The Fracking Solution Is A Good Cement Job
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