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The most common drilling problems are :
1. pipe stuck.
2. lost circulation.
3. shallow gas
4. downhole pressure
5. H2S bearing zone
etc
In well planning, the key to achieving objectives successfully is to design drilling programs on the basis of anticipation of potential hole problems rather than on caution and containment. Drilling problems can be very costly. The most prevalent drilling problems include:
1. pipe stuck.
2. lost circulation.
3.Borehole inestability
Hole Stability
Pipe stucking
Directional dogleg severity
H2S
Loss circulation
etc
1- Pipe stucking.
2-Complete or partial lost circulation.
3-Natural gas kicking.
4-H2s hazards .
5-BAD casing cementing.
1. lost circulation
2. pipe stuck
3. Borehole instability
4. kicks
5. bit dogleging
Lost Circulation
Well Kick
Sticking Of Pipe
Deviating Of The Hole In DD
Caving Of The Well Wall
Uncontrol Of Down Hole Pressure
Instability Of The Hole
The Mud To Be Contaminated
Thin Gas Permeable Zones
Damage Of Formation
Bad Communication
lost circulation, stuck pipe
1. Stuck pipe
2. Circulation loss
3. Well control
4. Borehole stability