Ensuring Wireline Integrity Through Regular Serviceability Inspections

Posted on by Crissa Fel Tawadan

Wireline performance is a critical factor in oil and gas operations. Any doubts about the condition of a wireline can lead to customer concerns, job delays, and potential failures in the field. To maintain operational reliability and assure clients of wireline integrity, serviceability inspections must be conducted on a routine basis.

Why Wireline Serviceability Inspections Matter

  • Prevents Unexpected Failures – Regular inspections reduce the likelihood of cablehead failures and wireline damage from well fluids or gases.
  • Builds Customer Confidence – Providing documented proof of wireline condition prior to operations reassures clients and prevents disputes.
  • Standardizes Safety and Compliance – Routine testing ensures all wireline units meet quality and operational standards.

Required Inspection Procedures

To maintain wireline integrity, a standardized testing process must be followed:

  • Monthly Pull Testing – Each district must conduct a wireline pull test every 30 days.
  • Data Recording and Storage – Test results are recorded in the line book, with a portion of the tested line preserved for reference.
  • Tagging for Traceability – Each tested line should be tagged with:
    • Line number
    • Truck number
    • Date of test
    • Number of wires used in the rehead
  • Proof of Condition – The 30-day test records, along with physical cable samples, serve as documented proof of wireline quality before running in a well.

Load Testing Method

The preferred method for serviceability inspections involves using the Innovative Completion Systems (ICS) Load Testing Machine. This system allows operators to:

  • Perform Load Tests on Wireline Samples – The machine pulls the cable from a cablehead while measuring and recording load conditions.
  • Capture Digital Records – A pressure transducer records data that can be saved via a USB connection to a laptop.
  • Conduct Single-Strand Pulls – The system can also test individual wire strands under straight pull or radius pull conditions for additional verification.

Pass/Fail Criteria

  • Tolerance Requirement – A tested wireline must fall within 10% of its calculated breaking strength to be considered in serviceable condition.
  • Failure Response – If a test falls outside the 10% tolerance, the district must notify the regional manager for further instructions.

Example Calculation:

  • 9 wires rated at 189 lbs. per wire = 1,701 lbs. total
  • 10% reduction tolerance = Pass threshold of 1,530.9 lbs.

Next Steps for Wireline Companies

  • Ensure Each District Has an ICS Load Testing Machine – If unavailable or in need of repair, contact the manufacturer for support.
  • Train Personnel on Proper Testing and Data Recording – Accurate documentation is key to maintaining compliance and customer assurance.
  • Maintain a Clear Testing Schedule – Monthly inspections should be conducted without exception to uphold quality standards.

Key Takeaways

Routine wireline serviceability inspections play a crucial role in minimizing failures, maintaining high service standards, and reinforcing customer trust. By implementing structured pull testing, digital record-keeping, and standardized acceptance criteria, wireline companies can ensure that their operations run smoothly and efficiently. Prioritizing these inspections is an investment in both safety and operational excellence.