Replies to This Discussion

Permalink Reply by king john on March 2, 2010 at 4:33

thanks les. at the point where the driller is going to make the turn for the lateral leg is there something placed downhole to turn the bore? or is it completly done from the surface ,using tourqe.
kj

Permalink Reply by Steven Rouse on March 3, 2010 at 10:18

To answer your question, drilling the curve has nothing to do with torque or an object being placed downhole. The Directional Driller uses a device called a mud motor which is placed directly above the bit. This motor is bent from 0-3 deg. Through the use of MWD hands with there mud pulse technology, they can tell the DD which way the motor is pointed. The DD then drills in the desired direction (called sliding) which means the rotary is stop. Those Directional Drillers are some smart cookies and thus must make plenty of money!

Permalink Reply by Les Bamburg on March 3, 2010 at 10:23

KJ, it is my understanding that drillers utilize a downhole mud motor with steering tool to drill the bend and lateral. This is what allows the sharp turns and precise location of the well path. I also believe the vertical section is still drilled using surface torque and a rotating drill string.

Permalink Reply by Henry on March 3, 2010 at 13:19

Les, Steven, or KJ (or anyone else),
Can you explain (only to satisfy my curiosity) how the driller, who is two miles up, knows where the drill bit is? And exactly how precisely does he know wher the bit is? Thanks in advance.

Permalink Reply by Les Bamburg on February 28, 2010 at 14:42

VSC, the two formations can be produced simultaneously using separate wells.

Permalink Reply by Les Bamburg on February 28, 2010 at 14:38

VSC, the two formations are separated by enough thickness that there will be no interference between wells. It may be that some Bossier Shale wells are drilled at the same time as the Haynesville Shale wells in unit. The timing for future development wells may vary by operator and region.

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