The oil and gas inspection industry operates according to a perfect standard. They primarily strive to keep pieces of equipment running smoothly while maintaining workplace safety.

Conforming to such standards is very challenging because oil and gas inspection involves drilling (both on land and offshore) reservoir engineering, refining production services, transportation of petroleum products and other operations.

It is not only challenging to conform to the industry standards, but it is even more expensive to maintain a safe workspace and protection of mining worker from harm.

It is even necessary to equip the worker with proper training to update them and also train them on practicing about the safety procedures.

Proper training is also important to update the techniques about the oil and gas inspection.

In the oil and gas industry, it has used many non-destructive techniques and methods and in brief; we call it as (NDT).

The best NDT methods solve issues regarding equipment reliability, safety, environmental and government rules and different regulation.

The major benefits that NDT services provide are

It may inspect the main equipment for transporting petroleum products such as pipelines with no structural changes;

They do not disturb equipment during NDT; therefore, there is neither a reason to shut down or to interrupt operation.

NDT methods involve many important things like ultrasonic technique, visual inspection, radiography, thermography, laser shearography, eddy current testing, microwaves and acoustics, and visual inspections.

The 5 most popular industry techniques for the oil and gas industries are following. These are the important techniques necessary to assess the quality standards.

These main techniques are visual inspections, ultrasonic techniques, and radiography, thermography, and emission techniques.  

  1. Visual Inspection

This inspection is an inexpensive method for identifying equipment flaws and defects. An expert technician can do this work properly by detecting improper structural installations, certain impending structural failure, welding flaws, corrosion development, and cracks.  

  1. Ultrasonic techniques inspection

These inspections use a sound wave whose frequencies (50 KHz – 50Mhz) are more than the audible range from the human ear. Piezoelectric effect of an ultrasonic transducer makes it possible to transmit and receive from within the equipment. The instrument is capable to inspect the internal structure of the equipment.

The instrument can detect other faults also like thickness changes, welds, crack, voids, delamination, other types of material and structural defects. Besides this, there are few limitations to these methods is that evolution and data acquisition depends on the expertise of the technician. There it makes difficult to arrive at non-subjective and precision.  

  1. Radiography inspection technique

These inspection methods use x-ray or gamma rays (electromagnetic radiation) to detect the internal structure and integrity of the structure. As these waves have short wavelengths, therefore they can travel and penetrate through structural material like steel and metallic structure.

In the oil and gas industries, these NDT methods are useful for inspecting welds on the pipeline and pressure vessels. Radiography methods are also useful for inspecting non-metallic materials like ceramics and concrete.

Operating such types of NDT requires conformance of safety regulations.

  1. Thermography technique inspection

This inspection detects the difference between the temperature of a pipeline and the surrounding environment. The measurement during inspection helps to detect defects in the pipelines insulation and leakage of oil and gases. NDT technique and drone service make this method of inspection more cost-effective and efficient.

  1. Acoustic emissions inspection

These methods of inspection detect the presence of refraction produced by leaks in the pipelines. During the leakage of the fluid negative pressure, waves propagate in both directions within the pipeline. These acoustic waves help to detect the leakage in the pipelines.


This informative post guides you to understand the 5 popular inspection techniques, their method, implementation, and limitations. The post highlights the importance of NDT techniques in the inspection of oil and gas industries.

Oil and gas industries inspection methods allow you to eliminate costly swing stages and bosun chair. It keeps your feet firmly on the ground. It reduces cost and inspection time by over 90%. It also delivers the entire inspection data directly to the expert and engineers.

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