Make A Trip

c) To remove and replace the drill bit or other downhole equipment.

d) Injecting cement into the wellbore.

c) Bottom Hole Assembly (BHA)

c) Pulling the drill string out of the hole.

a) The type of drilling fluid being used.

Here is a sample plan for making a trip to replace the drill bit:

Step 1: Preparation

• Safety: Ensure all safety equipment is available and in good condition (safety glasses, gloves, hard hats, etc.). Review safety procedures with the crew.
• Time: Estimate the time required to pull the drill string, disconnect the BHA, and prepare the new bit.
• Equipment: Gather the necessary tools and equipment, including the new drill bit, wrenches, torque wrenches, hoisting equipment, and a lifting sling.
• Personnel: Assign roles to the crew members, including the driller, tool pusher, floorhand, and other specialists.

Step 2: Pulling the Drill String

• Safety: Ensure proper communication and coordination between the driller and the floorhands. Use the drawworks and hoisting system carefully and follow safety procedures for lifting heavy loads.
• Time: Factor in the time required to safely pull the drill string.
• Equipment: Use the drawworks and hoisting system to gradually pull the drill string out of the hole.
• Personnel: The driller controls the drawworks, while the floorhands monitor the drill string and assist with disconnecting the BHA.

Step 3: Disconnecting the BHA

• Safety: Use proper lifting techniques and ensure the BHA is properly secured before disconnecting.
• Time: Allow sufficient time to carefully disconnect the BHA, ensuring all connections are released safely.
• Equipment: Utilize specialized wrenches and torque wrenches to disconnect the BHA from the drill string.
• Personnel: Floorhands and tool pushers work together to safely disconnect the BHA.

Step 4: Inspection and Preparation

• Safety: Inspect the drill string, BHA, and new drill bit carefully. Wear protective gear during inspection.
• Time: Allow for thorough inspection and repair or replacement of any worn or damaged components.
• Equipment: Utilize inspection tools and equipment to assess the condition of the BHA and drill string.
• Personnel: The tool pusher and other specialists inspect the equipment and make necessary decisions about repairs or replacement.

Step 5: Re-entry and Setting Bottom

• Safety: Ensure proper communication and coordination between the driller and floorhands. Use the drawworks and hoisting system carefully and follow safety procedures for lowering heavy loads.
• Time: Factor in the time required to safely lower the drill string.
• Equipment: Use the drawworks and hoisting system to carefully lower the drill string back into the hole.
• Personnel: The driller controls the drawworks, while the floorhands monitor the drill string and assist with setting the bit on bottom.

Step 6: Confirmation and Resumption

• Safety: Ensure all connections are secure and there are no leaks or problems with the BHA or drill string.
• Time: Allow for a final check before resuming drilling operations.
• Equipment: Check all equipment is in good working order.
• Personnel: The driller, tool pusher, and floorhands work together to verify the trip is complete and the well is ready for drilling.

Potential Delays:

• Mechanical issues with the hoisting system.
• Difficulty disconnecting the BHA.
• Worn or damaged equipment requiring repairs or replacements.
• Unexpected geological formations encountered during the trip.
• Safety issues requiring immediate attention.

Note: This plan is a general outline. The specific steps, equipment, and personnel required will vary depending on the type of well, depth, and other factors. Always prioritize safety and consult with qualified professionals for specific instructions and procedures.