Module 5- Drillstring design Flashcards
1
Q
Name 5 components of a BHA
A
Drill collars Shock subs Drilling Jars Reamers Mud motor Drill Bit
2
Q
What does spiral drill collar prevent?
A
Sticking
3
Q
Where are stabilizers put?
A
above the bit and along the bottom hole assembly
4
Q
Why are stabilizers used?
A
To control hole deviation
Minimize dogleg severity
5
Q
What are the 2 kinds of Drill Collar?
A
Standard
Spiral
6
Q
What problem would running large diameter Drill collar minimize?
A
Deviation problems.
7
Q
If sloughing problems exist, would you run larger or small diameter drill collar?
A
Small
8
Q
what does NMDC stand for?
A
Non Magnetic Drill Collar
