1.   This pressure must be under control, and we control it by means of the mud which we circulate down the drill pipe.

2.   Adkins and his research associates say laymen need to let go of the idea that the steel in drill pipe is rigid.

3.   Instead, it is turned by the rotation of the drill pipe.

4.   The Houston company is showing drill pipes, well plugs and other kit to complete wells.

5.   This is the leading manufacturer of drill pipe in Mexico, and the expanding oil service sector is scrambling for supplies, he says.