What is the most common drilling problems?

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:

• Pipe sticking
• Loss of circulation
• Hole deviation
• Pipe failures
• Borehole instability
• Mud contamination
• Formation damage
• Hole cleaning
• H2S-bearing zones
• Shallow gas zones
• Equipment and personnel-related problems

1. pipe stuck.

2. lost circulation.

3.Borehole inestability

• Pipe sticking
• Loss of circulation
• Hole deviation
• Pipe failures
• Borehole instability
• Mud contamination
• Formation damage
• Hole cleaning
• H2S-bearing zones
• Shallow gas zones
• Equipment and personnel-related problems

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.

VENU DE GAZ   

coincement

h2s

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