Liner Hanger & Completion Accessories
Stage Cementing Collars
Stage Cementing Collars for controlled opening and closing of casing ports for multi-stage primary cementing operations. Review tubular interfaces, load and pressure envelopes, operating sequence, materials, validation and records before requesting a comparable quotation.
RFQ selection reference
Reference fields for quotation comparison. Final values must be confirmed in the signed manufacturer datasheet.
| Selection field | Typical input | Typical input | Typical input | Buyer note |
|---|---|---|---|---|
| Casing match | Burst, collapse and axial requirements | Casing OD, weight, grade and connection | — | Match approved casing design |
| Operating sequence | Opening, closing and test pressures | — | Plug/dart and port arrangement | Attach cementing program and pressure limits |
| Materials and drill-out | — | Body and internal drillable materials | Temperature, fluids and sour service | Define post-cement cleanout and verification |
Product scope
Stage Cementing Collars are presented as a quotation-ready equipment family for controlled opening and closing of casing ports for multi-stage primary cementing operations. This page supports technical offer comparison; it does not promise one model, inventory position, downhole performance or certification. The selected manufacturer must confirm the equipment against the well design, load cases, pressure/temperature envelope, interface drawings, governing standard editions and signed datasheet.
Selection basis
The main RFQ inputs are casing size, weight, grade and connection, drift and burst/collapse requirements, setting depth and deviation, opening and closing method, plug or dart sizes, operating pressures and tolerances, circulation rate, cement and spacer chemistry, temperature, port area, sleeve travel and lock, rotational requirement, material grade, sour service, pressure testing, drill-out material, bump-pressure indication and contingency if the collar does not shift. Downhole completion equipment cannot be selected from nominal casing size or appearance alone. Provide the well schematic, casing and tubing tally, grades and connections, drift restrictions, depth, trajectory, pressure and temperature profile, fluid composition, sour-service requirement, load cases, operational sequence and contingency plan. For replacement or tieback work, include original maker, part number, serial number, completion records and measured seal-bore or profile condition.
Trade and industry context
The cited UN Comtrade record is a broad drilling-machinery-parts export proxy used only to prioritize internationally traded product families. It is not an oilfield-only market size, a search-volume estimate or a shipment claim for this equipment. API references identify relevant design, validation and documentation boundaries; they do not prove that an unnamed supplier is licensed, certified, authorized or holding stock.
Documents and inspection
Define signed datasheets, well and completion schematics, interface drawings, design and load calculations, material and heat-treatment certificates, dimensional and drift records, connection inspection, NDE, pressure and function tests, validation or qualification reports for the stated envelope, assembly and running procedures, redress records, certificate of conformity, traceability, manuals and recommended spares. Verify the actual manufacturer, facility, certificate scope and standard edition before order release.
RFQ checklist
- •Equipment family, quantity, new/replacement scope and delivery target
- •Casing, liner, tubing, workstring and tool connection interfaces
- •Depth, deviation, pressure, temperature, loads and fluid composition
- •Setting, shifting, circulation, cementing or cleanout sequence
- •Materials, sour service, validation, inspection and test records
- •Destination, Incoterm, packing, preservation and handling limits
- •Target unit or package price and acceptable technical alternatives
Upload the well schematic, tubular program, operational procedure, interface drawings and project specification with the inquiry. Close every dimensional, operational, material and certification deviation before comparing price or releasing the order.
Technical reference trail
These public references support the equipment family and selection context. They do not imply dealership, authorization or a guaranteed order specification.
Frequently Asked Questions
What information is required to quote Stage Cementing Collars?
Provide casing size, weight, grade and connection, drift and burst/collapse requirements, setting depth and deviation, opening and closing method, plug or dart sizes, operating pressures and tolerances, circulation rate, cement and spacer chemistry, temperature, port area, sleeve travel and lock, rotational requirement, material grade, sour service, pressure testing, drill-out material, bump-pressure indication and contingency if the collar does not shift, quantity, destination, delivery target and required records. Attach the well schematic, tubular details and operating procedure.
Does an API reference prove that an offered tool is certified?
No. The RFQ must state the required standard and edition. Verify the actual manufacturer's license or qualification scope and the product-specific validation, material and test records before order release.
How should an equivalent completion tool be evaluated?
Compare dimensions, connections, drift, loads, pressure/temperature, materials, setting or shifting sequence, intervention contingencies, validation envelope, records and every stated deviation before comparing price.
Technical and RFQ References
Check common units, standards and purchasing terminology, then build a structured request for this equipment.
Submit RFQ for Stage Cementing Collars
Send product, quantity, specification and destination details so the requirements can be reviewed with potential suppliers.
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