Well Integrity Specialist / OPS

Job DescriptionWell Integrity Specialist / OPS

Report to Co-EP Manager

StatusRotation 4X4 / Based in OC

PLANNING & DRILLING PHASE

A. Pre-Spud Planning

• Review well design (surface, intermediate, and production casing programs) for compliance with company well integrity standards and local regulations (e.g.,
• NORSOK D-010, API RP 90, ARH Decree 94-43).
• Define barrier philosophy, setting depths, cement top requirements, and pressure test schedules for each casing section.
• Evaluate formation integrity test (FIT) and leak-off test (LOT) data from offset wells and new wells.
• Review and approve cementing programs, expected top of cement (TOC).
• Define wellhead & BOP configuration and barrier verification tests before spud.

B. Drilling Execution Support

• Monitor real-time well integrity parameters: annular pressures.
• Ensure primary cement barrier is achieved and verified via CBL/VDL logs, temperature logs, and pressure tests.
• Review and approve the remidial cement job, during drilling phase.
• Verify casing pressure tests, nipple-up/down BOPs, and ensure correct pressure rating hierarchy.
• Approve wellhead installation and test records, and confirm all mechanical barriers (float collars, plugs) are functioning properly.
• Investigate and document loss of integrity events, casing leaks, sustained casing pressure (SCP), annular communication.

COMPLETION & PRODUCTION PHASE

A. Handover & Initial Integrity Validation

• Conduct handover from drilling to production team, ensuring all barrier verifications and test certificates are available.
• Establish reference well integrity baseline (tubing, annulus pressures,temperature, corrosion monitoring, SCSSV test).
• Establish the well Dossier for approval from authority to put the well into production phase.

B. Routine Monitoring & Maintenance

• Monitor annulius and record trends for early anomaly detection.
• Establish the procedure for annuli pressure investigation and restoration tof their integrity.
• Review down hole safety valve (DHSV), surface safety valve (SSV), and wellhead seal tests.
• Implement corrosion and erosion monitoring (chemical injection efficiency, scale inhibitors, etc.).
• Validate pressure integrity after interventions, workovers, or stimulation operations.
• Classify well integrity status: Safe I Requires Attention I Unacceptable

C. Risk Management & Reporting

• Conduct Well Integrity Reviews and risk ranking as per ARH, NORSOK D-010 &ISO-16530.
• Maintain and update Well Integrity Database (SAP, WIMS, eWIMS, or company system).
• Recommend remedial actions for annular pressure or barrier failures (e.g., squeeze cement, mechanical plug, straddle packer).

INTERVENTION/ WORKOVER PHASE

A. Well Diagnostics

• Plan and interpret diagnostic logs: CBL/VDL, noise/temperature logs, pressure buildup tests, spinner surveys.
• Identify sources of leaks, communication paths, or barrier degradation.

B. Remedial Design & Execution

• Design repair operations such as:
  • Squeeze cementing.Patch or liner installations.
  • Bridge plug or mechanical barrier placement.
• Define barrier verification tests tagging, inflow/pressure tests, CBL confirmation.

C. Verification & Documentation

• Supervise testing of secondary barriers before returning the well to production.
• Update the Well Integrity file and close out action items in the integrity management system.

PLUG & ABANDONMENT (P&A) PHASE

A. Pre-P&A Evaluation

• Review full well history, including integrity issues, annular pressures, and barrier performance.
• Identify hydrocarbon-bearing zones, over-pressured formations, and environmentally sensitive aquifers.
• Define minimum safe abandonment depth (MSAD) and barrier strategy (rock-to­ rock cement plugs).

B. Barrier Design & Placement

• Develop permanent isolation program:
  • Primary barrier: seals the reservoir.
  • Secondry barrier: isolates intermediate formations or casing shoes.
  • Surface barrier: seals openhole/casing annuli near surface.
• Plan and verify plug lengths, placement tools (balance plugs, dump bailer, section milling, perf & squeeze), and test methods.
• Apply verification methods per NORSOK D-010: Tag, Pressure test, CBL/VDL log, Cement returns.

C. Regulatory Compliance & Reporting

• Ensure compliance with ARH Decree 94-43, NORSOK D-010, and company standards.
• Prepare Final P&A Report with:

• Barrier schematics and test evidence.
  • Plug depths, slurry volumes, and cement verification.
  • Summary of retrieved tubulars, cut & pull depths, and environmental isolation confirmation.

D7ocumentation , Auditing & Continuous Improvement

• Establish the Well Integrity Management System (Manual+ Software).
• Maintain all well integrity records (test certificates, CBL reports, annulus pressure charts, intervention logs).
• Lead or participate in well integrity audits and regulatory inspections.
• Update internal standards, checklists, and barrier design guidelines based on field experience.
• Provide training and mentoring for operations engineers and supervisors on integrity assurance practices.