专栏作家约翰·施密特（John Schmitt）建立在他的电缆工具弦讨论的基础上。This month, he talks about methods to pull casing.

专栏作家约翰·施密特（John Schmitt）建立在他的电缆工具弦讨论的基础上。这个月，他谈论壳牌电梯和举升机。

专栏作家约翰·施密特（John Schmitt）在他的电缆工具弦讨论中扩展了。这个月，他讲话夹具。

Columnist John Schmitt talks dart, flat-bottom and other bailers used in a cable-tool drilling program.

Growing a lasting drilling business is rooted in reliable equipment and employees. Maintaining your equipment not only nurtures your profits but also employee retention. Regional service centers provide expertise, specialty tools and drilling parts inventory to cultivating overall business health.

Columnist John Schmitt goes beyond the cable-tool string to discuss other components of a well operation.

Demand for geothermal energy has generated drilling industry growth. For many companies, geothermal drilling business is booming, while others weather fluctuations by diversifying their service lines with a single rig.

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