Specifications

1.With API 6A and ISO9001 Certification
2.Have professional designers
3.Advanced equipment,good quality,competitive price

API 6A casing head spool / drilling spool

Casing spool is the very important equipment used in drilling process,casing spool can control the wellhead pressure,casing spool are often flange ended on the top of the casing head and connected with the bottom of the tubing head then become a part of the wellhead system of the oil well.

The casing spool has a straight bore bowl with 45°landing shoulder design which avoids damage to sealing areas by drilling tools and prevents test plug and bowl protector wedging problems when pressure is applied Casing spools are normally furnished with threaded outlets and studded outlets and also can be manufactured by request. they can be used for single completions and model of dual completions.

Features
• Versatile straight-bore design,uses a 45° landing shoulder;
• 3 different types of outlets: Line pipe, Flanged (Studded) Extended flanged outlets. 
• Allows use of lock screws to retain hanger. 
• Has a additional lock screws for Bowl protecion.. 
• Accepts a wide variety of slip and mandrel casing hangers.
• Multiple bottom sealing type, such as: PE/BG bottom,OO bottom and double "P" seal bottom.

The connection size and pressure

Top flange	Top flange	Top flange	Top flange
11"×2000psi (279.4mm×14MPa)	11"×2000psi (279.4mm×14MPa)	11"×5000psi (279.4mm×35MPa)	13-5/8"×5000psi (346.1mm×35MPa)
11"×2000psi (279.4mm×14MPa)	13-5/8"×2000psi (346.1mm×14MPa)	11"×10000psi (279.4mm×70MPa)	13-5/8"×5000psi (346.1mm×35MPa)
11"×3000psi (279.4mm×21MPa)	11"×3000psi (279.4mm×21MPa)	11"×15000psi (279.4mm×105MPa)	13-5/8"×5000psi (346.1mm×35MPa)
11"×3000psi (279.4mm×21MPa)	13-5/8"×2000psi (346.1mm×14MPa)	13-5/8"×5000psi (346.1mm×35MPa)	21-1/14"×2000psi (539.8mm×14MPa)
11"×3000psi (279.4mm×21MPa)	13-5/8"×3000psi (346.1mm×21MPa)	13-5/8"×10000psi (346.1mm×70MPa)	13-5/8"×5000psi (346.1mm×35MPa)
11"×5000psi (279.4mm×35MPa)	13-5/8"×3000psi (346.1mm×21MPa)	13-5/8"×15000psi (346.1mm×105MPa)	13-5/8"×5000psi (346.1mm×35MPa)