An integrated cementing accessory and completion string
By designing an integrated cementing accessory with a built-in valve assembly to filter impurities and ensure unidirectional mud flow, the problem of excessive length in traditional float collars and float shoes is solved, achieving efficient cementing operations and a low-cost drilling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHELFOIL PETROLEUM EQUIP & SERVICES CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional float collars and float shoes increase drilling time and cost due to their excessively long tubing structure, and mud and impurities can easily enter the one-way valve system, leading to sealing failure and affecting the reliability of cementing operations.
Design an integrated cementing accessory comprising built-in first and second valve assemblies. The first valve assembly filters impurities larger than the target size, while the second valve assembly ensures unidirectional mud flow, reducing impurity intrusion. Both valve assemblies are housed within a casing for easy removal during subsequent drilling.
It improves the reliability of cementing operations, reduces drilling costs and time, reduces casing usage, and frees up more space in the producing formation.
Smart Images
Figure CN122407124A_ABST