Study on rock mechanics of deep wellbore, especially on rock drillability and rock anisotropy is a key project to resolve the problems of deep or ultra-deep well drilling.

深部井眼岩石力学的研究，特别是深部井眼岩石可钻性和岩石各向异性的研究，是解决深井、超深井钻井关键技术的重要课题。

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The study demonstrates that this method is simple, applicable, scientific, and rational, which can simulate the real bonding situation between the wellbore and the cement slurry.

研究结果表明，该评价方法简单适用，科学合理，较为真实地模拟了井壁岩石与水泥浆的胶结情况。

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ALD provides downhole density measurements, including high-quality borehole image logs, to help optimize wellbore placement through geosteering and to reduce geological uncertainties.

ALD可以进行井下密度测量，包括高质量的井眼成像测井，利用地质导向帮助作业者优化井位，减少地质不确定性。

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The reason you want that flow to continue is it alleviates pressure on the wellbore.

WHITEHOUSE: Daily Press Briefing

This meant replacing the 14-pound-per-gallon mud that was in the wellbore with 8.5-pound-per-gallon sea water.

WSJ: The Oil Disaster Is About Human, Not System, Failure

These operators also place an emphasis on appropriate casing designs and cementing practices to maintain wellbore integrity and protect the freshwater aquifers.

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