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Drilling rig maintenance service

Technical Scope – What Our Drilling Rig Maintenance Service Covers

Our drilling rig maintenance service covers all major rig systems. Below is our standard service scope:

System Preventive Maintenance Corrective Repair Overhaul / Recertification
Drawworks Oil analysis, brake adjustment, bearing vibration monitoring Drum resurfacing, gear replacement, brake caliper rebuild Complete teardown, new bearings & seals, API recert
Mud pumps Liner & piston inspection, valve seat replacement, fluid end NDT Crosshead repair, pin replacement, pulsation dampener rebuild Fluid end replacement, crankshaft inspection
Rotary system Table bearing grease, swivel packing replacement, torque checks Bearing replacement, bushing repair, washpipe replacement Full swivel rebuild with API 8C test
Hoisting (block & hook) Sheave bearing check, latch function test Sheave replacement, latch spring replacement Load test & recertification
Mast & substructure Pin lubrication, crack inspection (dye pen), bolt torque check Pin replacement, weld repair (certified), straightening Full structural inspection & report
Top drive Gear oil analysis, IBOP function test, cooling system check Gearbox repair, motor replacement, IBOP rebuild Factory‑level overhaul
Mud system Shaker screen condition, centrifuge balance, agitator gearbox oil Screen frame repair, centrifuge bowl resurfacing, pump seal replacement Full centrifugal & shaker rebuild
Controls & electrical PLC battery check, VFD capacitor test, sensor calibration Card replacement, display repair, wiring harness Control system upgrade (to modern PLC)
BOP & well control Ram seal inspection, indicator switch test, hydraulic fluid analysis Seal replacement, bonnet repair, cylinder repacking Full BOP recert per API 16A


Service Types – Drilling Rig Maintenance Service Levels

We offer four service tiers to match your budget and operational requirements:

  1. Basic Preventive Maintenance (PM) – Monthly or quarterly visits: lubrication, visual inspections, oil sampling, vibration checks, minor adjustments. Ideal for rigs with low utilization or new rigs under warranty.

  2. Comprehensive PM + Condition Monitoring – Our technicians install permanent sensors and collect data weekly. We provide a dashboard of component health, predict failures 2‑4 weeks in advance. Best for high‑utilization rigs where unplanned downtime is very costly.

  3. On‑Call Corrective Repair – You call when something breaks. We dispatch a technician with spares. Emergency surcharge applies. Good backup for rigs with internal maintenance crews.

  4. Full‑Scope Maintenance Contract – Our team takes complete responsibility: scheduled PM, 24/7 emergency response, spare parts supply, major overhauls. Fixed monthly fee or cost‑per‑operating‑hour model. We guarantee uptime.

  5. Component Overhaul & Exchange – Send us your worn drawworks, mud pump fluid end, or rotary table. We rebuild to OEM specs, test, and return with warranty. Exchange program reduces downtime.

  6. Rig Upgrade & Modernization – Add AC VFD, install walking system, upgrade driller’s cab, retrofit automatic driller. Done by the engineers who originally designed the systems.

  7. Training & Documentation – On‑site maintenance training for your crew. We also review your existing maintenance manuals and update them to current standards.

Applications – Where Our Maintenance Service Has Proven Itself

Our drilling rig maintenance service has kept rigs running in:

  • Remote desert operations – Middle East, North Africa. Our mobile service trucks carry enough spares and tools for 2‑week self‑sufficiency. On‑site machining saves shipping heavy components.

  • Arctic / Siberia – Cold‑weather maintenance including heated service enclosures, low‑temperature lubricants, and battery/electronics testing. Proven on 11 Rosneft rigs.

  • Offshore platforms – Service teams with offshore survival certification (BOSIET). Compact tooling and spare parts logistics for platform cranes and tight deck space. South China Sea experience.

  • Multi‑well pad drilling – High utilization (moving between wells weekly). Our predictive maintenance catches wear before it fails during a move.

  • Aging rig fleets – Many rigs built in the 1990s‑2000s are still working. We provide obsolescence management, replacement parts for discontinued components, and structural recertification.

  • New rig commissioning & warranty support – We also service rigs we did not build. We can take over warranty support from the original manufacturer after expiration.

Why Choose SJ Petro for Drilling Rig Maintenance Service?

  • OEM expertise – We built the rigs. Our service engineers are the same people who designed the drawworks, programmed the VFDs, and certified the masts. No generic mechanics.

  • Global service footprint – Regional hubs in Dubai (Middle East, Africa), Singapore (Asia‑Pacific), and service partners in Houston (Americas). We can reach most drilling sites within 48 hours.

  • Factory‑backed spare parts supply – As a manufacturer, we have direct access to original drawings and casting patterns. No waiting for third‑party brokers.

  • API & ISO certified processes – Our maintenance procedures follow API RP 8B (Recommended Practice for Hoisting Tools) and API 7G (Drill String Design). We provide certified inspection reports.

  • Predictive maintenance technology – We use vibration analysis (FFT), oil analysis (spectrometry), thermography, and borescope inspections. You get a dashboard of rig health.

  • Cost‑effective exchange program – Swap your failed mud pump fluid end for our rebuilt unit. Your downtime goes from 4‑6 weeks to 2‑3 days.

  • Flexible contract terms – Pay per visit, monthly retainer, or cost‑per‑operating‑hour. We work with your budget.

  • Training included – Every long‑term maintenance contract includes quarterly training sessions for your crew. We teach you how to extend component life.

  • Transparent reporting – After every service, you receive a digital report with photos, measurements, recommendations, and parts used. No surprises.

Frequently Asked Questions (FAQ)

Q1: Do you only service SJ Petro rigs?
No. While we are the OEM for SJ Petro rigs, we also service rigs from other manufacturers (National, Ideco, Honghua, Baoji, Lanzhou, etc.). We have reverse‑engineered many common components and maintain cross‑reference data. For very old or obscure rigs, we may need a pre‑service survey.

Q2: What is your typical response time for an emergency repair?
From your call to a technician arriving on site: within 24‑48 hours for locations near our regional hubs (Middle East, Southeast Asia, China). For very remote locations (e.g., interior Siberia), 48‑72 hours. We can ship spare parts ahead of the technician via airfreight.

Q3: Do you offer a preventive maintenance program for a single rig, not a fleet?
Yes. We serve small contractors with one rig just as we serve large national oil companies. No minimum fleet size.

Q4: Can you recertify a mast or substructure for continued service?
Yes. Our structural engineers perform a full inspection (visual, dye penetrant, ultrasonic thickness) and load test if required. We provide a certified report that regulatory authorities accept. We also repair cracks and replace worn pins.

Q5: What is the cost‑per‑operating‑hour model for full maintenance contracts?
We charge a fixed rate per hour that the rig is actually drilling or tripping (not standby). The rate covers all scheduled maintenance, emergency repairs, spare parts (excluding major components like engines or top drives), and technician travel. You pay only for productive time. Contact us for rates.

Q6: Do you provide remote diagnostics without sending a technician?
Yes. We can connect to your rig’s PLC and VFDs via VPN (with your permission). Our engineers can often diagnose electrical or control system issues remotely and guide your local crew through repairs.

Q7: How do I know if my rig needs an overhaul vs. ongoing repairs?
We can conduct a condition assessment (cost applied to future contract). We inspect major components, review maintenance history, and provide a report: green (OK), yellow (monitor), red (overhaul needed within 6 months). Many rigs benefit from targeted overhauls rather than full rebuilds.

Q8: Do you offer warranties on your repair work?
Yes – 12 months on repairs and replacement parts. If the same component fails again due to our workmanship, we fix it at no charge, including travel.

Q9: Can you train my local maintenance crew during a service visit?
Absolutely. We include basic training in every service visit. For formal training courses (3‑5 days classroom + hands‑on), we offer separate programs. Ask about our "Train the Trainer” package.

Q10: How do I schedule a maintenance service or request a quote?
Email service@sjpetro.com with:

  • Rig make, model, and year of manufacture

  • Your location (nearest city, distance from paved road)

  • Type of service needed (emergency repair, PM, overhaul, upgrade)

  • Any known issues or recent failures
    We will respond within 24 hours with an initial assessment and cost estimate.

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