9-5/8''BTC N80Q

9-5/8''BTC N80Q
9-5/8'' BTC N80Q is a common specification description in the oil and gas drilling industry, mainly used to represent the parameters of casing or tubing. Here is the detailed English description and explanation:

English Description

9-5/8 inch BTC (Buttress Thread Connection) casing/tubing, grade N80Q.

Breakdown of Each Component

  1. 9-5/8 inch
    Refers to the outer diameter (OD) of the casing or tubing, measured in inches. It is equivalent to 9.625 inches, which is a standard size in oilfield tubular products.
  2. BTC
    Stands for Buttress Thread Connection, a type of threaded connection commonly used in casing. Its design features a steep load flank and a shallow non-load flank, which can withstand high axial loads and provide good sealing performance, making it suitable for medium to deep well applications.
  3. N80Q
    • N80: Represents the material grade of the casing/tubing, indicating a minimum yield strength of 80,000 psi (pounds per square inch), which is a medium-high strength grade widely used in oil and gas wells.
    • Q: Denotes the "quench and temper" heat treatment process applied to the material. This process enhances the mechanical properties (such as toughness and strength) of the steel, making the casing/tubing more suitable for harsh downhole environments (e.g., high pressure, corrosion).