rotary shoe

Incorrect. That is the function of a drill collar.

Incorrect. That is the function of stabilizers.

Correct! Rotary Shoes are designed for this specific purpose.

Incorrect. That is the function of a depth gauge.

Incorrect. The opposite is true; its cutting surface is what makes it effective.

Incorrect. This is not a characteristic of Rotary Shoes.

Correct! This is the core principle of its operation.

Incorrect. Rotary Shoes work mechanically, not magnetically.

Incorrect. This is a common type.

Incorrect. This type offers superior durability and cutting power.

Incorrect. This is a specialized type for aggressive cutting.

Correct! While hydraulic systems are used in drilling, there is no such thing as a hydraulic Rotary Shoe.

Incorrect. Rotary Shoes are part of a range of wellbore rescue techniques.

Incorrect. While often cost-effective, it may not always be the fastest solution.

Correct! This is a major advantage of using Rotary Shoes.

Incorrect. Proper knowledge and experience are crucial for safe and effective use.

Incorrect. The heat does not burn away the object.

Incorrect. While drilling fluid viscosity is important, the heat doesn't directly increase it.

Correct! Heat softens the formation, making it easier to cut.

Incorrect. While heat management is important, this is not the primary role of the heat generated.

Here is a possible solution, keeping in mind that the specific type of Rotary Shoe and the exact steps will vary based on the actual well conditions and available equipment:

1. Type of Rotary Shoe:

For a stuck pipe at 8,500 feet, it's likely that the formation is relatively hard and abrasive. In this case, I would choose a **Diamond-Dressed Rotary Shoe**. The diamond-coated teeth offer exceptional hardness and abrasion resistance, making them ideal for challenging formations.

2. Reasoning:

The depth and potential hardness of the formation suggest that a standard Rotary Shoe might not have the cutting power needed to effectively free the pipe. Diamond-Dressed shoes are known for their ability to cut through tough materials, ensuring a more efficient and successful operation.

3. Steps for Operation:

a) **Safety Briefing:** Conduct a thorough safety briefing with the crew, emphasizing the risks involved and the importance of following procedures.

b) **Equipment Preparation:** Ensure the Rotary Shoe is properly inspected, lubricated, and prepared for operation. Check all related equipment, including the drill string, for proper function and compatibility.

c) **Rig Setup:** Configure the rig for the Rotary Shoe operation, ensuring sufficient torque and weight capacity.

d) **Running the Rotary Shoe:** Carefully lower the Rotary Shoe into the wellbore, guided by the drill string.

e) **Rotation and Milling:** Slowly rotate the Rotary Shoe, allowing the cutting teeth to engage the stuck pipe. Monitor the progress and adjust rotation speed as necessary.

f) **Monitoring and Evaluation:** Regularly monitor the wellbore conditions, drilling fluid pressure, and the Rotary Shoe's performance. This helps to ensure the operation is progressing effectively and safely.

g) **Freeing the Pipe:** Continue the milling process until the pipe is fully freed.

h) **Post-Operation Inspection:** Carefully inspect the Rotary Shoe and wellbore conditions after the operation. Make necessary repairs or adjustments as required.

Remember, this is a general outline. The specific details and procedures will need to be adapted based on the specific well conditions, available equipment, and safety regulations.