Steel oil casing pipes are typically seamless or welded and come in various sizes and lengths to fit different drilling requirements. They are designed to form a protective barrier around the wellbore, ensuring the stability and integrity of the well during drilling, completion, and production phases. The main purpose of oil casing pipes is to prevent the wellbore from collapsing, to isolate different formations, and to control the flow of oil or gas to the surface. These pipes also provide support for the drilling equipment and facilitate the installation of other completion components such as casings, tubing, and packers.Steel oil casing pipes are primarily used in the oil and gas industry for various applications, including: Wellbore stability: Casing pipes are installed during drilling operations to provide structural integrity to the wellbore. They act as a support and prevent the collapse of the well walls, ensuring the stability and safety of the drilling process. Containment of drilling fluids: Casing pipes help to control the flow of drilling fluids (such as mud and cement) during drilling operations. They prevent the fluids from seeping or contaminating the surrounding formations or aquifers. Preventing well blowouts: Casing pipes play a critical role in preventing well blowouts, which can be dangerous and costly. The casing provides a barrier between the wellbore and the surrounding formations, preventing the uncontrolled release of oil, gas, or drilling fluids. Fluid production and extraction: Casing pipes are used to extract oil, gas, and other fluids from the reservoirs. They are equipped with perforated or slotted sections that allow the fluids to flow from the reservoir into the wellbore. Corrosion protection: Casing pipes are designed to withstand corrosive environments encountered in oil and gas drilling operations. They are coated or painted with anti-corrosion materials to protect against the corrosive effects of the drilling fluids and surrounding environment. Pressure containment: Casing pipes are engineered to withstand high-pressure environments encountered during drilling and production operations. They provide a barrier against the high pressures exerted by the reservoir fluids, ensuring the safety and integrity of the well. Cementing and zonal isolation: Casing pipes are used in the cementing process to create a seal between the wellbore and the surrounding formations, preventing fluid migration between different zones. This helps to maintain well integrity and prevents cross-contamination of fluids. Well completion: Casing pipes serve as a conduit for other completion components, such as tubing, packers, and production equipment. They facilitate the installation and operation of these components, allowing for efficient well completion and production activities.
1. Who are we? We are headquartered in Tianjin, China, and have specialized in the steel export industry for more than 10 years, with branches in the United States, Ecuador, Guatemala and other countries. 2. How do we ensure quality? There are always pre-production samples before mass production; Always conduct final inspection before shipment; 3. What can you buy from us? Photovoltaic brackets, steel sheet piles, silicon steel, ductile iron pipes, steel gratings, and hundreds of other steel materials. 4. Why should you buy from us instead of other suppliers? Integrate the superior resources of China's steel industry to provide customers with high-quality steel products The price is favorable and the goods can be delivered to customers in time. 5. What services can we provide? Accepted delivery terms: FOB, CFR, CIF, EXW, FCA, DDP, DDU, Express; Accepted payment currencies: USD, Euro, RMB; Accepted payment methods: T/T, L/C, Credit Card, Western Union, Cash; Languages spoken: English, Chinese, Arabic, Russian, Korean| Products | Steel pipe/tube | ||
| Standard | API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q，L245，L360，X42，X52，X60，X70. API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125 | ||
| Material | ST37/ST45/ST52/25Mn/27SiMn/E355/SAE1026/STKM13C | ||
| Outer diameter | 114.3mm-508mm or customized | ||
| Wall thickness | 5-16mm or customized | ||
| Length | 5.8m, 6-12m or as required | ||
| Surface treatment | Black/Peeling/Polishing/Machined | ||
| Heat treatment | Annealed; Quenched; Tempered | ||
The production process of oil casing involves several stages. Here is a general overview of the oil casing production process: Steel manufacturing: The first step is the production of high-quality steel used to manufacture the casing pipes. Steel is produced in steel mills through processes like melting, refining, and solidification. Pipe manufacturing: In this step, the steel is formed into pipes through various methods, including seamless pipe manufacturing or longitudinal and spiral welding techniques. Seamless pipes are formed by piercing a solid steel billet, while welded pipes are made by joining steel strips using welding methods. Heat treatment: After the pipes are manufactured, they go through a heat treatment process to enhance their mechanical properties. Heat treatment involves heating the pipes to a specific temperature and then rapidly cooling them to improve their strength, hardness, and resistance to corrosion. Casing pipe threading: Threading is an important step in oil casing production. The ends of the casing pipes are threaded to enable connections between them during well construction. Threading can be done using various threading processes, including rotary shoulder connections or tapered thread connections. Quality control and inspection: The casing pipes undergo rigorous quality control and inspection processes. This involves dimensional checks, visual inspection, ultrasonic or magnetic particle testing, and other non-destructive testing methods to ensure the pipes meet the required specifications and quality standards. Coating and finishing: Casing pipes are often coated to protect them from corrosion and improve their longevity. Coating materials such as epoxy, polyethylene, or zinc are applied to the exterior surface of the pipes through methods like hot-dip galvanizing or coating application. This coating process provides additional corrosion resistance and ensures the pipes are ready for deployment in oil and gas wells. Packaging and shipping: Once the pipes pass the quality control and coating processes, they are packed and prepared for shipment to the customers. The pipes are typically bundled, strapped, and protected to prevent damage during transportation.
