CPTDC Drilling Rig and Workover Rig Parts

1

XJ400S-A

High-strength alloy steel, nitrile rubber (seals)

1. Long-term high-load operation exceeding rated capacity; 2. Hydraulic oil contamination causing valve core wear; 3. Abrasion from drilling fluid solids.

1. Strictly control load within rated 400kN; 2. Replace hydraulic oil every 200 operating hours and clean filters; 3. Inspect seals weekly for leakage.

2

XJ550

Chromium-molybdenum steel, fluorine rubber (high-temperature seals)

1. High-temperature operation (over 120℃) aging seals; 2. Torque fluctuations damaging transmission components; 3. Corrosion from acidic drilling fluid.

1. Monitor hydraulic oil temperature, stop working if over 70℃; 2. Stabilize torque during operation; 3. Apply anti-corrosion coating to key parts monthly.

3

XJ450

Carbon steel (structural parts), polyurethane (wear pads)

1. Friction between moving parts without sufficient lubrication; 2. Impact load during well tripping; 3. Outdoor exposure causing rust.

1. Lubricate moving parts every 8 hours; 2. Reduce tripping speed to minimize impact; 3. Clean and paint structural parts quarterly.

4

XJ650

Alloy steel (load-bearing parts), silicone rubber (seals)

1. Overload during heavy well workover; 2. Hydraulic system pressure instability damaging cylinders; 3. Sand dust blocking oil passages.

1. Equip overload alarm and stop operation when triggered; 2. Calibrate pressure gauge monthly; 3. Clean air filters daily in dusty environments.

5

XJ1000S-A

High-tensile alloy steel, viton rubber (seals)

1. High-power operation causing fatigue damage to transmission shafts; 2. Drilling fluid contamination leading to bearing wear; 3. Vibration during long-term operation loosening fasteners.

1. Inspect transmission shafts for fatigue cracks monthly; 2. Use filtered drilling fluid meeting API standards; 3. Tighten fasteners before daily operation.

6

XJ250

Mild steel (auxiliary parts), natural rubber (seals)

1. Low lubrication efficiency causing bushing wear; 2. Temperature changes (outdoor) damaging seals; 3. Improper operation leading to component collision.

1. Check lubricant level daily and refill as needed; 2. Replace seals seasonally in extreme temperature areas; 3. Train operators to follow standard procedures.

1

ZJ20

Manganese steel (drill pipes), alloy steel (derrick parts)

1. Rock impact during drilling damaging drill pipe joints; 2. Fatigue from repeated lifting/lowering; 3. Saltwater corrosion in offshore operations.

1. Inspect drill pipe joints for cracks after each well; 2. Rotate drill pipes periodically to distribute load; 3. Use anti-corrosion grease in offshore environments.

2

ZJ30

Chromium steel (bearings), high-strength alloy (winch parts)

1. High-torque drilling damaging winch gears; 2. Bearing overheating from poor ventilation; 3. Drilling fluid intrusion causing internal corrosion.

1. Monitor winch gear temperature during operation; 2. Clean ventilation ducts weekly to ensure heat dissipation; 3. Replace damaged oil seals promptly to prevent fluid intrusion.

1

ZP205

Alloy steel (gears), chrome-plated steel (shafts), nitrile rubber (seals)

1. Gear meshing without sufficient lubrication; 2. Foreign particles (sand, metal chips) entering the rotary table; 3. Uneven load causing shaft deformation.

1. Use industrial gear oil meeting ISO 68 standards; 2. Install a debris filter and clean it weekly; 3. Calibrate rotary table level before drilling.

2

ZP175

Carbon steel (housing), stainless steel (bearings)

1. Low-temperature operation (below -10℃) reducing lubricant viscosity; 2. Seal aging leading to lubricant leakage; 3. Vibration loosening gear fasteners.

1. Use low-temperature lubricant in cold areas; 2. Inspect seals monthly and replace if cracked; 3. Tighten gear fasteners every 10 operating days.

3

ZP275

High-strength alloy steel (gears), ceramic (bearings for high load)

1. High-load drilling exceeding rated capacity; 2. Lubricant degradation from high temperature; 3. Drill pipe eccentricity causing uneven wear.

1. Strictly follow rated load limits; 2. Replace lubricant every 150 operating hours; 3. Align drill pipe to avoid eccentricity before rotation.

1

KW-75t

High-tensile steel (lifting parts), polyurethane (wear-resistant pads)

1. Overload beyond 75-ton capacity; 2. Friction between lifting parts and heavy equipment; 3. Outdoor exposure causing rust and material fatigue.

1. Equip load sensor to avoid overload; 2. Install wear pads between lifting parts and equipment; 3. Conduct non-destructive testing (NDT) every 6 months.

Do these parts fully comply with CPTDC rig specifications?

Yes, all parts are customized to match CPTDC’s XJ/ZJ/ZP series and KW-75t rigs, adhering to API Q1, 4F, 7K and GB/T 23505 standards, ensuring 100% compatibility and no modification required during installation.

How to determine the replacement cycle of key parts?

Replacement cycles depend on operation hours and environment: hydraulic seals (200-300 hours), gears (1500-2000 hours), bearings (1000-1500 hours). For harsh environments (desert/offshore), shorten cycles by 30% and conduct weekly inspections.

Can customized parts be provided for special working conditions?

Yes, we offer customized parts for extreme conditions (high temperature, low temperature, high corrosion) by adjusting materials (e.g., ceramic bearings, anti-corrosion alloys) and structural designs, fully meeting field-specific requirements.