GRE Casing is an essential material in the oil & gas industry. It’s used extensively in various applications. Casing pipes and pipe strings experience large amounts of pressure, making them susceptible to general wear and tear. Things can go south pretty fast if the two fail to operate altogether.
It is important to evaluate the viability of casing and tubing for defects, failures, and corrosion to ensure they work optimally. This helps operators make informed decisions on tubing quality and also assists in regulating the entire process. The GRE casing summary and the failure modes and analysis are summarized below:
Plastic bending deformation occurs in various applications when the casing and tubing areas are different from those of the license. Deformation failure also includes flexible deformation beyond the tensile.
Casing and tubing fracture failure can have significant negative consequences on any application. The primary fracture forms are:
- Overload fracture. This occurs when the pipeline’s speed is faster than usual, resulting in the casing and tubing snapping off when encountered with a downhole plug.
- Low-stress brittle fracture of the casing and tubing weld.
- Stress corrosion fracture. This normally happens within oil and gas wells with high sulfur content. To identify stress corrosion fractures, you must look at the fault source and the region most affected by the crack.
- Hydrogen embrittlement can lead to fractures when the tubing material has too much hydrogen, which causes problems in the tensile force. The fractured edge can be identified in a white or white light ring.
- Fatigue and corrosion fatigue fracture. This occurs when the coiled tubing is exposed to cyclic stress due to the constant import and winding of the roller.
Surface Damage Failure
Surface damage primarily comprises corrosion, including uniform corrosion, pitting corrosion, and crevice corrosion. Uniform corrosion occurs when the casing and tubing are involved in a long-time storage process. Pitting occurs in the standard method of using and storing the product, while crevice corrosion refers to the corrosion between oil pipe welds and materials.
Surface damage also includes the general wear and tear between the downhole tubing and casing, the damage between the oil pipe and grip system for the injection head, and so on. Moreover, it includes mechanical damage that occurs when casing and tubing in transit surfaces bump into each other.
With the increased demand for oil and petroleum products, there’s additional pressure on the drilling industry to constantly figure out our new reserves and carry out the excavation and pumping process. Unfortunately, pipelines are fundamental to the transportation of these fluids, and the pipes get damaged easily when exposed to long-term high temperatures and high-pressure environments.
It is important to analyze casing and tubing failures to help implement preventive measures and avoid such incidents. Prompt measures such as preventive maintenance and using the best equipment can improve product utilization efficiency, prevent economic losses, and bring greater benefits to operations.
Can Fiberglass Help?
Fiberglass is an ecologically clean and natural material that is practically harmless to the environment or human health. In addition, the added binders give it features such as water tightness and strength, making fiberglass tanks and pipes feasible for oil and gas wells.
The material boasts many unique properties, such as resistance to high temperatures, humidity, and bending. It is also non-flammable, compressive, tensile, chemical-resistant, and has a relatively low density. It offers the following advantages:
- Top-notch insulation, including thermal and electrical insulation
- Vibration resistance, making it ideal for preventing abrasions and cracks that may impact operations.
- Incombustibility and chemical-resistant properties
- Durability in oil and gas applications.
Contact CNPS to Learn More
Companies should invest in quality materials, pipes, and other equipment for any operation to succeed. CNPS offers significant cost savings with its range of non-metallic pipes, such as GRE, GRP, RTP, and FRP piping systems, GRE casing solutions, mud logging equipment, OCTG products, and geological field supplies.
Our China-based company has the experience and technology to deliver turnkey solutions for oil and gas, water, industrial, and marine & offshore. Our team possesses unrivaled precision capabilities and industry know-how to help assist companies in all concerned sectors with diverse challenges.
Reach out to learn more about our top-quality and safe mud logging units, geological tools and equipment, and fiberglass piping systems that will provide the opportunity to boost savings and enhance safety during operations.