MMR Video

Summary

This training video provides a detailed guide on the proper procedure for handling and setting a cement retainer (MMR) in wellbore operations. It covers the mounting of the MMR onto the stinger, the running procedure, and cementing process, as well as converting the MMR into a mechanical bridge plug (MMB). Emphasis is placed on proper lubrication, torque settings, and movement control to ensure safe and efficient installation. The video also explains tool modifications for converting to the MSB bridge plug, ensuring smooth and reliable cementing and wellbore sealing.

Takeaways

• 😀 Properly mount the MMR onto the MSR setting tool by ensuring the control nut is seated and slips are correctly adjusted.
• 😀 Lubricate the non-working portion of the slips and the Stinger sub for smooth operation before mounting the cement retainer.
• 😀 Carefully ensure the Stinger engages the valve collet fingers properly to avoid operational issues during setup.
• 😀 When running the MMR into the hole, maintain a running speed of 60-90 feet per minute, and apply left-hand torque periodically to seat the control nut.
• 😀 After reaching the desired setting depth, lift the tool slightly to release the slips and allow the setting sleeve to move freely.
• 😀 Once the slips are released, the cement retainer is securely set by applying proper pipe weight and tension.
• 😀 An annular test is essential after setting the retainer to confirm the pack-off is successful; repeat as necessary.
• 😀 To release the setting tool from the retainer, apply 500 pounds of tension and rotate the work string 10 turns to shear the shear screws.
• 😀 After releasing the setting tool, cement through the retainer by applying weight to open the valve and pumping cement through it.
• 😀 Converting the MMR to a mechanical bridge plug involves removing and replacing certain components, including the guide shoe and flange, with proper alignment of the bridging plug.
• 😀 The MSR to MSB conversion involves modifying the MSR tool, including the removal of the valve stinger and installation of a spacer, ported coupling, and thread protector for proper bridge plug functionality.

Q & A

What is the primary function of the MMR cement retainer?

The MMR cement retainer is used for secondary cementing operations. It can be configured to set securely in any hardness casing and is designed to be drillable after use.

What materials are used in the MMR cement retainer to ensure a superior seal?

The MMR cement retainer uses a one-piece packing element and metal backup rings to provide a superior seal. The case-hardened slips help eliminate premature setting while allowing easy drilling out.

What should you do before running the retainer into the hole?

Before running the retainer, it must first be mounted onto the stinger or setting tool. Ensure proper mounting by verifying the drag assembly, lubricating the parts, and ensuring proper engagement of the stinger and the retainer.

How should the stinger sub and the MMR retainer be prepared before installation?

The stinger sub should be lightly lubricated with grease, and the MMR retainer should be slid onto the stinger while ensuring it remains level. Special care should be taken to ensure the stinger properly engages the valve collet fingers.

What is the recommended running speed and torque to avoid issues during the operation?

The running speed should be between 60 and 90 feet per minute. During the run, care should be taken to avoid right-hand rotation and excessive left-hand torque, as this may unscrew the top sub of the setting tool.

How do you ensure that the control nut stays seated against the control nut clutch?

Left-hand torque should be placed in the work string every 10 to 15 stands to keep the control nut seated properly against the control nut clutch.

What action should be taken once the desired setting depth has been reached?

Once the desired setting depth is reached, the tool should be picked up 2 feet above the setting point, followed by right-hand rotation to release the control sleeve and setting sleeve from the control position.

What happens when the slips are released during the setting procedure?

When the slips are released, the locking dog moves outward and releases the control latch from the stinger sub body. The slips are forced outward toward the casing wall by the leaf springs inside each slip segment.

How do you test if the cement retainer has achieved proper pack off?

After setting the slips, perform an annular test to confirm pack off. If pack off is not achieved, repeat slack off and upstring movements to ensure proper sealing.

What is the process for converting the MMR cement retainer into a mechanical bridge plug (MMB)?

To convert the MMR cement retainer to a mechanical bridge plug (MMB), remove set screws, guide shoes, and lower flanges as necessary. For wireline bridge plug conversion, remove the shear stud from the guide. Once converted, install the bridging plug and ensure it is securely seated.