Kick

Stuck Pipe

A problem results from the Drilling Pipe sticking inside the Hole and the inability to rotate or move inside and outside the Hole.

Topics

1. Introduction
2. Causes of Stuck Pipe
3. Operations that can reduce the Stuck Pipe.

1. Introduction

Stuck Pipe is a drilling problem that result in the inability of the Drilling String to rotate which require time over time to resolve and free the Drilling String. There are some cases of the stuck Pipe that are hard to free which results in additional financial cost. The most cases of the Stuck Pipe are in the Directional Drilling.

2. Causes of Stuck Pipe

• -The Stuck may occur due to overburden pressure.
• - It also happens if we drill in a Shale Active Formation.
• - The Stop of Drilling and Rotating for a relatively long time for maintenance or something else which causes downtime.
• - When the Hydrostatic Pressure is higher than the Formation Pressure, the Drill Pipe is pushed against Well Bore due to the high pressure difference.
• - Inadequate Hole Cleaning from Cuttings that leads to Cuttings Accumulation around the Drill String.
• - When the Dog Leg severity is too high in the Directional Drilling.

3. Operations that can reduce Stuck Pipe

• - Reducing the static time of the Drill String inside the Well.
• - Cleaning the Hole permanently and reducing the Cuttings of the solid content in the Mud.
• - Reducing the Mud Hydrostatic Pressure by decreasing the Mud Weight.
• - Reducing the Dog Leg severity.
• - Taking care while facing the layers Shale and using them appropriately in the Drilling Fluid.

⛔ In case of the Stuck, how do we free the Drill String.

1. - Inject the Diesel Oil inside the Drill Pipe.
2. - Inject the Surfactant through the Drill Pipe.
- If we can't free the Drill Pipe with the previous methods, we can retrieve the Pipe above the Stuck Point. - Inject the Surfactant through the Drill Pipe.