Drill Bits & Hole Enlargement
Hole Openers and Underreamers
Hole Openers and Underreamers for pilot-hole enlargement, casing-clearance creation and below-restriction underreaming in drilling and completion operations, with RFQ fields covering pilot and enlarged hole size, pass-through restriction, fixed or expandable design, activation method, cutter blocks, formation, gauge protection, flow and pressure drop, stabilizer arrangement, connection, BHA length, lost-circulation risk and retrieval contingency.
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 |
|---|---|---|---|---|
| Geometry | — | Pilot, pass-through and enlarged diameters | Fixed or expandable cutter arrangement | Confirm casing and wellhead restrictions |
| Activation and cutters | Hydraulic or mechanical activation pressure | PDC, TCI or application cutters | — | Define indication, lock and contingency features |
| BHA and hydraulics | Flow and pressure-drop window | — | Connections, stabilizers and overall length | Provide directional and hole-cleaning requirements |
Product scope
Hole Openers and Underreamers are presented as a quotation-ready product family for pilot-hole enlargement, casing-clearance creation and below-restriction underreaming in drilling and completion operations. This page supports early technical comparison; it does not identify one guaranteed model, stocked unit or universal configuration. The final supplier and manufacturer must confirm the ordered design against the buyer's datasheet, project specification, applicable code editions and signed quotation.
Selection basis
The main selection inputs are pilot and enlarged hole size, pass-through restriction, fixed or expandable design, activation method, cutter blocks, formation, gauge protection, flow and pressure drop, stabilizer arrangement, connection, BHA length, lost-circulation risk and retrieval contingency. These fields affect equipment fit, performance, safety, documentation, transport and total package price. For replacement equipment, include the installed maker, model, serial number, original part number, clear nameplate photographs and interface drawings. For a new package, attach process cases, site data, governing specifications and the latest approved standard editions.
Configuration reference
The table above is a structured RFQ reference rather than a manufacturer model list. It shows the information required to compare technically responsive quotations. Public standards and manufacturer examples identify common architecture and purchasing fields only; they do not imply dealership, authorization, stock ownership or identical performance across suppliers.
Documents and inspection
Define the document package before commercial evaluation. Depending on the equipment, request signed datasheets, process and instrumentation diagrams, general arrangement and interface drawings, design calculations, material certificates, pressure or performance test reports, NDT records, hazardous-area certificates, inspection and test plan, preservation procedure, packing list, lifting plan, marking photographs and certificate of conformity. Verify the exact code edition, certificate scope, manufacturing facility and offered model before purchase-order release.
RFQ checklist
- •Product family, service, quantity and required delivery date
- •Operating cases, pressure or load, temperature, flow and process media
- •Dimensions, connections, materials and approved standard edition
- •Site utilities, ambient conditions and hazardous-area classification
- •Required testing, third-party inspection, traceability and document language
- •Destination, Incoterm, packing, lifting and transport restrictions
- •Target unit price or budget range and acceptable technical alternatives
Upload the specification, drawing, equipment list, process data or replacement photographs with the inquiry. Open technical points and supplier deviations should be closed before price comparison and order release.
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 Hole Openers and Underreamers?
Provide pilot and enlarged hole size, pass-through restriction, fixed or expandable design, activation method, cutter blocks, formation, gauge protection, flow and pressure drop, stabilizer arrangement, connection, BHA length, lost-circulation risk and retrieval contingency, quantity, destination, delivery target and the required document package. Attach the project datasheet, process data or matching equipment drawing whenever available.
Are the displayed specifications guaranteed values?
No. They are RFQ reference fields. The final manufacturer datasheet, approved drawings, calculations, test procedure and purchase specification control the ordered equipment.
Can an equivalent configuration be quoted?
Yes, when the buyer permits alternatives. Every deviation in standard, rating, material, interface, certification, testing or delivery scope should be listed clearly for technical review.
Technical and RFQ References
Check common units, standards and purchasing terminology, then build a structured request for this equipment.
Submit RFQ for Hole Openers and Underreamers
Send product, quantity, specification and destination details so the requirements can be reviewed with potential suppliers.
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