BB Circulating Bottom Sub-Assembly
Rebco BB Circulating Bottom Sub-Assemblies for use in BF Landing Nipple are to be used with Lock Mandrels (See Section XIV) ROTS, ROTW, ROTG, and ROTM with 'API' Cross Over Mandrel or Packing Mandrel and BB Seal Unit according to the Nominal Size.
Rebco BB Circulating Bottom Sub-Assemblies for use in BR Landing Nipple are to be used with Lock Mandrels (See Section XIV) ROTZ, and ROTK with 'API' Cross Over Mandrel or Packing Mandrel and BB Seal Unit according to the Nominal Size.
Product Code: 21
Applications
Controlled fluid circulation from above in BF and BR Landing Nipple completions, covering seal bore sizes of 1.78" to 2.81."
Completions requiring downward fluid circulation while maintaining pressure isolation from below
Run-in and pull-out operations where the valve is held open to allow free fluid bypass, reducing hydraulic loading on the tool string
Compatible with Lock Mandrels ROTS, ROTW, ROTG, and ROTM in BF nipples; and ROTZ and ROTK in BR nipples
Key Benefits
The ability to hold the valve open during run-in and pull-out significantly reduces hydraulic drag on the tool string, improving operational efficiency in fluid-filled completions.
Pressure isolation from below is maintained while circulation from above remains possible, providing both isolation and fluid management in a single sub-assembly.
Compatibility across both BF and BR Landing Nipple profiles, and with multiple lock mandrel types, makes the BB a versatile bottom sub for completions using multiple nipple profiles.
Stainless and Alloy construction options available to suit service conditions.
Circulating Bottom Sub-Assembly holds pressure from below while allowing circulation from above. It can be held open to bypass fluid while running and pulling.
Product Code: 21
NOTE: When ordering Specify Lock Mandrel Size and Type to be used with, and Material to suit Down-hole conditions/requirement.
For Part Numbers and Engineering Data see Section XVI - PLUG CHOKES
TECHNICAL DATA
DET | PART NAME | QTY | ||
1 | SEAL UNIT | 1 Set | ||
2 | API Cross Over Mandrel | 1 | ||
3 | CIRCULATING VALVE | 1 | ||
4 | VALVE STEM | 1 | ||
5 | SPRING | 1 | ||
6 | RETAINER | 1 | ||
7 | SPRING | 1 | ||
8 | Type ‘A’ or ‘B’ CAGE | 1 |
For Part Numbers and Engineering Data see Section XVI - PLUG CHOKES
RELATED TOOLS
Disclaimer: Information is provided for reference only. Rebco Oil Tools, Inc. makes no express or implied warranty as to the accuracy or completeness of this information. Equipment selection, configuration, and use must be performed by qualified personnel and are subject to approved procedures, well conditions, mechanical limitations, and Rebco’s Terms and Conditions of Sale.