| 1. | Drilling rigs are powered mechanically by rotating the drill pipe from above.
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| 2. | However, Heywood opted to order more drill pipe and continue to try.
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| 3. | Instead, it is turned by the rotation of the drill pipe.
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| 4. | The wedges then holds the drill pipe by the compressive force.
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| 5. | Several oilfield service companies are currently developing wired drill pipe systems.
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| 6. | The networked drill pipe can transmit data acquired by most large service companies.
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| 7. | NOV "'Grant Prideco "'is a supplier of drill pipe and drill stem accessories.
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| 8. | They're also more difficult to handle safely due to the longer drill pipe.
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| 9. | The heavy weight drill pipe applies the weight on the bit.
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| 10. | Another common reason for tripping is to replace damaged drill pipe.
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