As a wireline engineer, we know that the smallest misstep can lead to significant setbacks. Whether it’s performing wireline well logging, cased hole wireline services, or any other task in the oilfield, the tools and procedures we use play a critical role in the success of the operation. Recently, an incident involving a missing Line Entry Guide (LEG) on a third-party pressure control equipment (PCE) tool served as a stark reminder of just how important it is to follow the best practices and ensure every piece of equipment is properly configured before starting a job.

The Incident: The Missing LEG and Its Consequences

It all started during a typical pumpdown perforation operation. The job was running smoothly until a request came in from the client to set a retrievable bridge plug (RBP) in a different well for surface valve work. When we went to use the setting sleeve for the RBP, it was immediately clear that something was different. The sleeve didn’t have the usual beveled edge we were used to; instead, it had a flat top, which increased the likelihood of it hanging on the PCE connection.

Here’s where the issue escalated. The third-party PCE provider didn’t possess a Line Entry Guide (LEG) for the specific thread pattern on the PCE connection (the 15K Stinger), meaning the connection was unprotected during the operation. Even though the winch operator held tension on the wireline as the tool was being lifted into the lubricator, the setting sleeve caught on the connection. The result? The tool was unable to stop before severing the weakpoint.

Fortunately, when the tool fell, it hung on the tool trap, preventing damage to the toolstring and, more importantly, avoiding injury to anyone near the operation. However, this incident could have been much worse, and it highlighted the importance of equipment readiness and safety procedures.

The Root Cause: Missing the Necessary LEG

The root cause of this incident was the lack of a LEG for the specific type of PCE connection we were working with. The LEG, which is essential for proper alignment and smooth entry of the tool into the lubricator, was not available because the third-party PCE provider didn’t have the right configuration for the 15K Stinger connection.

The absence of this crucial piece of equipment exposed the operation to unnecessary risks. Without the LEG, the risk of tool failure, wireline misalignment, and potential damage to the equipment and wellbore increased significantly. This situation could have easily been avoided had proper planning been done, ensuring the right tools were available for the job.

Preventive Measures: Ensuring Safety and Efficiency in Future Jobs

After this incident, we took immediate action to implement preventive measures that would avoid similar problems in the future. Here are the key steps we have put in place to ensure smoother, safer wireline operations:

1. Mandatory Use of LEG with PCE:
   The use of the LEG with any AHWS-provided PCE is now mandatory. This ensures that every operation has the necessary equipment to guide the tool smoothly and safely into place. The LEG provides the alignment needed to prevent tool hang-ups, which is especially important when using tools like perforating guns or other downhole tools that require precise placement.

2. SOP Deviation Form for Third-Party PCE Providers:
   If we find ourselves working with a third-party PCE provider that does not have a LEG for their equipment, the manager must be contacted immediately. We will complete an SOP (Standard Operating Procedure) Deviation Form to document the inherent risks of operating without a LEG. This form will be signed by the client representative, and a copy will be retained in the job packet. This ensures that all parties are fully aware of the risks involved and that safety remains the top priority.

3. Review of Pumpdown Procedures:
   To further minimize the potential for unintended pumpdown operations (UPO), we’ve referenced the AHWS Pumpdown Procedures, which include specific bump-up procedures. These procedures ensure that all steps are followed methodically to prevent errors in the field.

4. Thorough Equipment Checks Before Each Job:
   We have also strengthened our equipment inspection protocols. This includes checking that all equipment, including the LEG and PCE tools, are compatible with the well conditions and have the correct configurations for the specific job at hand. Proper checks before deployment can prevent issues during the operation and save valuable time.

The Bigger Picture: Why It’s Crucial to Follow Best Practices

This experience reinforced the importance of adhering to wireline best practices. Whether we are conducting cased hole logging, wireline perforating, or downhole pipe recovery, ensuring that every piece of equipment is ready for the job is critical.

In wireline services, precision and safety are paramount. Tools like the pipe caliper tool, logging cables, and wireline control systems require the highest level of attention to detail, and any deviation from best practices can result in costly delays, equipment damage, and even safety hazards. By following thorough pre-job checks and ensuring that the right tools are in place, we can avoid incidents like this one and improve the efficiency and safety of our operations.

Conclusion: A Commitment to Continuous Improvement

At the heart of every successful wireline operation is a commitment to continuous improvement. This incident reminded us of the importance of proper planning, maintaining quality equipment, and following established procedures. By ensuring the availability of the correct tools, like the LEG for our PCE connections, we can minimize the risk of failure and maintain the integrity of our wireline operations.

Wireline engineers are constantly faced with the challenge of balancing efficiency with safety. With the right equipment, clear procedures, and thorough training—whether it’s for wireline well logging, perforating systems, or cased hole solutions—every job can be completed safely and successfully. As we continue to innovate and refine our practices, we remain dedicated to providing the best wireline services in the industry, ensuring the highest standards of safety and performance for every operation.