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Construction Phase 7 Types of Services
Operation Phase 7 Types of Services

Construction Phase

1.Factory Supervision 2.Nondestructive Testing (NDT)for Surface Engineering 3.Tubing & Casing Technical Services 4.Semi-Permanent Fiber Optic Deployment 5.Non-Impression Makeup & Breakout of Tool Joints 6.Wellbore and Salt Cavern Sealing Integrity Testing 7.Tubing and casing connections gas leak testing
1.Factory Supervision During both the construction and operational phases of gas storage facilities, T-ALL Inspection provides resident supervision services across multiple key areas—including equipment procurement, design planning, construction execution, operational oversight, and quality, safety, and environmental management.
2.Nondestructive Testing (NDT) for Surface Engineering
1.Conventional Nondestructive Testing (NDT) Techniques： Ultrasonic Testing (UT) Radiographic Testing (RT) Magnetic Particle Testing (MT) Liquid Penetrant Testing (PT) These techniques are well-established, widely recognized within the industry, and deliver high reliability. High sensitivity in detecting hazardous defects such as cracks, lack of fusion, and incomplete penetration Radiographic testing provides intuitive defect visualization through lmbased imaging Test results are recordable, lm negatives can be stored long-term, and support re-inspection and full traceability
2.Pipeline Circumferential Weld Inspection with PAUT + TOFD Technology PAUT + TOFD enables comprehensive inspection of pipeline welds from all angles. Automated crawler mechanism for more precise track positioning, controllable movement, and stable coupling Software interface provides more intuitive data presentation For special-process workpieces, ne defects can be rapidly detected, imaged, and accurately located
3.Acoustic Emission (AE) Testing Technology Suitable for real-time operational monitoring of large storage tanks, enhancing safety performance.
4.Eddy Current Testing (ECT) Technology Detection of surface and near-surface defects (such as cracks, corrosion, and pitting), material thickness variations, and aws beneath coatings or surface layers.
3.Tubing & Casing Technical Services Commercial inspection of tubing and casing Thread inspection of tubing and casing at surface Downhole running support for tubing and casing
4.Semi-Permanent Fiber Optic Deployment Fiber-optic cables strapped outside tubing for real-time monitoring of temperature, acoustic signals, strain, and pressure in the wellbore. High resolution, high accuracy, high sensitivity No interference with internal uid ow Real-time monitoring with early warning of abnormal conditions
5.Non-Impression Makeup & Breakout of Tool Joints Fiber-optic cables are strapped outside the tubing and deployed into the wellbore to enable real-time monitoring of temperature, acoustic signals, strain, and pressure. Precisely monitors makeup/break torque to ensure torque accuracy Captures and stores torque data during makeup/break operations Monitors operations and enables playback of tamper-proof torque records for quality traceability
6.Wellbore and Salt Cavern Sealing Integrity Testing Seal integrity is evaluated based on both leakage rate and gas-water interface analysis. Covers all phases—including pre-cavern creation, post-cavern creation, and injection/ production completion—to target seal integrity of specic components Safe, inert, residue-free testing medium that meets environmental requirements Simulates extreme working conditions to expose potential leak risks in advance
7.Tubing and casing connections gas leak testing Achieves gas tightness testing at pressures up to 120 MPa Utilizes helium leakage rate for quantitative assessment of sealing performance Single-point testing takes only 1.5 minutes Enables simultaneous testing at both factory-threaded couplings and on-site connection ends

Operation Phase

1.Asset Integrity Management 2.NDT for Station Equipment, Facilities & Retrot Projects 3.Pipeline Inspection 4.Fiber Optic Monitoring & Maintenance 5.Well Integrity Monitoring 6.Metrology & Calibration Services 7.Inspection and Maintenance of Special Gas-Tight Threaded Tubing & Casing
1.Asset Integrity Management Asset integrity management system consulting Equipment integrity assessment techniques Equipment inspection/ monitoring technology Digitalization of Asset Integrity Management
2.NDT for Station Equipment, Facilities & Retrot Projects
1.Nondestructive Testing (NDT) During Equipment Installation at Station Sites Inspection of equipment weld joints Detection of surface and internal defects in equipment Quality checks before new equipment installation
2.Nondestructive Testing During Equipment Modication Projects at Station Sites Pre-modication condition assessment Real-time monitoring of critical components during modication Post-modication safety acceptance testing
3.Pipeline Inspection Pipeline Inline Inspection Technologies Integrated Corrosion Protection Inspection Technologies
4.Fiber Optic Monitoring & Maintenance Safety Monitoring for Gas Storage Facility Operation Intelligent Oil & Gas Field Construction – Smart Monitoring Systems
5.Well Integrity Monitoring Combining distributed ber optic sensing well logging leak sealing technologies to provide comprehensive solutions for wellbore integrity challenges.
6.Inspection and Maintenance of Special Gas-Tight Threaded Tubing & Casing Oil Tubing Repair Services Oil Tubing Technical Repair Services Steel Mill Thread Processing and Repair Technical Services
7.Metrology & Calibration Services Flow measurement services Inspection and testing of security equipment

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