Jump up and you fall down. The drillstring is in a controlled fall, and does not need pushing. If you hold a wet spagetti firm in one end and continuously twist/rotate the other, at one point it is twisted enough such that the firm end will start to rotate too. Only ~100meter of the drill string is in compression regardless of well length, and the rest is in tension, meaning its just hanging there and spinning around. If you stand on the ground and start to pull yourself up, you can have tension in your arms and compression in your feet at the same time (assuming your feet still touch the ground).
Latest Answers