Intermediate casing seals at the bottom of the casing spool, while production casing is suspended at the upper section. Intermediate casing sealing options include single or dual P-type, B-type, FS-type, metal seals and combined sealing structures.
Lock screws for sealing elements are provided on connections. Bolted connections can be supplied with removable valve plugs. All test ports and grease injection ports adopt metal sealing.
Product Specifications
Applications
This drilling casing spool is designed for full-cycle wellhead operations, perfectly matching drilling, well completion and production scenarios, widely used in oil & gas onshore and offshore well projects:
l Oil & Gas Well Drilling: Equipped with wear bushing and test plug, it protects wellhead during drilling, maintains wellbore integrity, and supports pressure testing through reserved test ports. The reliable intermediate casing bottom sealing prevents mud leakage and wellbore instability during drilling.
l Well Completion Operations: Realizes accurate isolation between intermediate casing and production casing via multi-type sealing structures. It stabilizes casing strings, avoids inter-layer fluid channeling, and provides qualified wellhead conditions for subsequent completion and transformation.
l Long-Term Well Production: The high-load 45° shoulder structure stably suspends production casing and tubing. It adapts to long-term continuous production working conditions, ensures stable wellhead bearing and sealing, and reduces shutdown maintenance frequency.
l Complex Condition Wells: With optional diversified sealing solutions (P-type, B-type, FS-type, metal and combined seals), It is applicable to medium and high-pressure wells, ensuring zero leakage under fluctuating pressure.
