Commissioned downhole intervention, completion deployment and well-integrity work for oil, gas and geothermal wells. Includes e-line and coiled-tubing conveyance, cleanout, milling, fishing, valve manipulation, plug and packer setting or retrieval, leak and annular remediation, completion engineering with deployment, and preparation for plugging and abandonment. Specific materials, access limits and partner-delivered steps qualify the intervention; equipment sales and unsupported final cementing or abandonment scope are excluded.