Evaluation of the service life of a rotary drilling line is of great importance to ensuring safe drilling and reducing drilling cost.

钢丝绳使用寿命评定对确保钻井安全与降低钻井成本具有十分重要的意义。

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In the process of drilling, calculation of formation temperature while drilling has significance for rapid and safe drilling and geological exploration.

在钻井过程中，随钻计算地层温度对快速、安全钻井和地质勘探具有极其重要的意义。

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It has less effect on the filter loss in increasing viscosity and shear, thus meeting the demands of fast and safe drilling relatively well. 1.

在提粘、提切的情况下，对滤失量影响较少，能较好地满足快速安全钻井的要求。

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This method of drilling is not federally supervised under the Safe Drinking Water Act.

VOA: special.2009.10.23

With that in mind, the Environmental Defense Fund, Southwestern Energy and other progressive gas producers and environmental groups are working to develop a model regulatory framework for safe drilling that can serve as the foundation for better operations.

WSJ: Is Natural Gas the Road to a Clean Energy Future?

In fact, our oil production last year reached its highest level since 2003, and we want to encourage more safe, responsible drilling where we can.

WHITEHOUSE: Weekly Address: Gas Prices & Energy Security

This insures that drilling occurs in a safe and responsible manner, and that spills resulting from drilling are uncommon, if not entirely unheard of here.

FORBES: EPA is Obama's Offshore Drilling Ace in the Hole