 |
 |
 |
Oil casing is a large caliber steel pipe used to secure the well wall of oil and gas Wells. Its main functions include supporting the well wall to prevent collapse, ensuring the circulation of drilling mud, and isolating different formation pressures to ensure safeproduction. They are classified by application as conduit, surface casing, technical casing,and reservoir casing. The surface casingprotects shallow layers from contamination, the technical casing separates pressure layers, and the reservoir casing directly exportsoil and gas.
| Product name |
Seamless Oil Pipe |
| Process |
Hot rolled and cold drawn |
| Our diameter |
1/8-30 inch(10.3-762mm) |
| Wall Thickness |
0.049*-2.5"(1.24-63.5mm) |
| Length |
Random Length, Fixed Length,SRL, DRL |
| Steel Grade |
API 5L: GR B, X42,X46, X56,X60,X65,X70 ASTM A53/A106: GR A, GR B, GR C ASME SA106: GRA, GR.B, GR.C ASME SA192: SA192ASME SA209M: T1,T1a ASME SA210: GR.A-1, GR.C ASME SA213: T2,T5, T9,T11, T12, T22 ASME SA335: P2,P5,P9,P11,P12,P22,P91 DIN17175:ST35.8, ST45.8, 15Mo3, 13CrMo44 |
| Surface |
Fusion Bond Epoxy Coating,Coal Tar Epoxy,3PE,FBE,Varnish coating,Bitumen coating,Black Oil coating as per customers requirement |
| Treatment |
Heat treatmentAnnealed: Bright annealed,Spheroidize annealed, Normalized,Stress relieved, Cold finished, Quenched and Tempered. |
| Application |
Applicable to the general structure, mechanical structure, water wall panel, economizer,super heater, boiler and heat exchanger with seamless steel tubes, and to transportliquid, gas, oil etc. |
Casing materials are mainly high-strength steel, common steel grades include J55, N80, P110, etc., which should be selectedaccording to well depth and geological conditions. Corrosion protection materials such as 3Cr and 13Cr should be used forcorrosion environment. The API 5CT standard is implemented, usually in the OD range of 114.3 mm to 508 mm, and the end machining form includesthread connection, etc. Casing is a disposable consumption material, accounting for more than 70% of oil well pipe consumption.It has high quality requirements and needs to pass strict testing such as flattening test and tensile test.
