Oil Casing Technical Standards

Different types of casing are often used in oil production. Surface oil casing protects the well from contamination of shallow water and gas formations, supports wellhead equipment and maintains the weight of other layers of casing. Technical oil casing separates different levels of pressure, allowing drilling fluids to flow properly and protecting the production casing. To install explosion-proof devices, leak-proof devices and tail pipes in the well. Reservoir oil casings transport oil and natural gas from underground reservoirs. Used to protect drilling and layered drilling mud.

In this article, we will introduce the technical standards of oil casing in detail.

Petroleum casing standard: API SPEC 5CT

Length range: R1 (6.10m~7.32m), R2 (8.53~9.75m), R3 (11.58m-12.80m)

Petroleum casing steel grades: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150.

Thread type: LTC, STC, BTC, VAM, EUE, NUE

Chemical Composition:

Mechanical Properties:

Length Range: