Factory
Supervision
Inspection
and Evaluation
Inspection
and Repair
Well Control
Equipment
Coating
Services
API Workshop Standardized
Maintenance Shop EPCC Services
Running
Service
Connection
Gas Testing
Synchronized MFL Inspection
During Tubing Tripping Operations

Factory Supervision

For casing and tubing products, our supervision process prioritizes test and product quality through:

Quality management system effectiveness verification Testing compliance and product specification conformance
Factory Inspection Scope
Casing/Tubing Body: Post-heat treatment NDT and visual inspection
Threading: Dimensional tolerance verification per API/SPEC standards and visual examination
Mechanical Properties: Chemical composition and mechanical property validation against technical agreements

Inspection and Evaluation

Providing asset evaluation services centered on casing/tubing inspection, supported by:

Technical expert teams Proprietary smart platform for dynamic asset management Auxiliary services: Storage, logistics, and operational maintenance

Inspection and Repair

Coverage: Tubing, casing, sucker rods, coupling tools, executing full-process technical services at regional bases per API/gas-tight thread standards:

Cleaning, flaw detection, thread reconditioning Sandblasting, bell mouthing, pressure testing Painting and marking

Machining Services

Providing precision machining for pipe subs and downhole tool accessories used in drilling, well testing, and surface construction operations, while fulfilling custom design and machining requirements for rotary shafts & disc components.

Service Scope
Tubing/Casing Subs & Couplings Machining Downhole Tool Accessories Fabrication Mechanical Components Processing

Coating Services

Comprehensive anti-corrosion solutions developed with Southwest Petroleum University:

Drill pipe/tubing/casing internal coatings Gathering pipeline coatings Sulfur-resistant and wax-prevention coatings

API Workshop Standardized Maintenance Shop EPCC Services

Design and construction services per API/QHSE standards:

Full-size tubular goods workshops (casing/tubing/drill pipe) Drilling/production tool workshops (downhole/wellhead equipment) Third-party resource integration platforms

Running Services

Indentation-free makeup services for all casing/tubing sizes:

Specialized equipment with precision torque monitoring
Body integrity preservation technology
Tamper-proof data recording and traceability

Connection Gas Testing

Post-makeup helium leak detection verifying gas-tight integrity of casing/tubing (2-7/8" to 18-5/8")connections under simulated downhole conditions On-site.

Max pressure: 120 MPa
Single test cycle: ≤ 1.5 minutes
Single test cycle: Detection capability at 10⁻⁷ mbar·L/s leakage rate (equivalent to 1 gas bubble/30 minutes)
Downhole Condition Simulation: Testing under axial tension/compression loads

Synchronized MFL Inspection During Tubing Tripping Operations

Real-time non-destructive testing integrated with tubing extraction processes using magnetic flux leakage technology to assess pipe integrity without interrupting rig operations.

Continuous inspection during tripping operations Dimensional/visual thread assessment Maintains inspection accuracy under contamination without surface cleaning Simultaneous ID/OD defect detection

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Product Inspection

Intelligent monitoring