# SAM #RFIPP002

DOE Market Research for 24-Inch Wellbore Drilling to 6,500 Feet TVD at NNSS

**Buyer:** DOE Contractors
**Posted:** October 12, 2026
**Respond By:** November 13, 2026
**Identifier:** RFIPP002
**NAICS:** 213111, 213112

DOE market research seeks industry input on delivering a large-diameter wellbore at the Nevada National Security Site.
- **Buyer and opportunity**
  - The U.S. Department of Energy (DOE), through the National Nuclear Security Administration (NNSA), is gathering industry feedback for the Rock Valley Direct Comparison site at NNSS.
  - Mission Support and Test Services, LLC (MSTS), the NNSS operator for NNSA, is conducting the market research. The Office of Defense Nuclear Nonproliferation is identified in the attached project report.
  - This is an Expression of Interest and Request for Information, not an award. No specific commercial OEMs or equipment vendors are named.
- **Requested work**
  - Plan and deliver a 24-inch open-hole wellbore to 6,500 feet true vertical depth (TVD); the bottom 1,400 feet is specified as uncased.
  - The conceptual design includes a 56-inch conductor hole with 50-inch casing set at 125 feet TVD; a 48-inch surface hole with 42-inch casing set at 3,000 feet TVD; and a 36-inch production hole with a 28-inch intermediate liner from 2,800 to 5,100 feet TVD.
  - The anticipated work is phased: design and engineering; long-lead items, rig modifications, and procurement; then construction and drilling operations.
- **Technical considerations requested for industry feedback**
  - Drilling and casing methods, including dual-string reverse circulation for larger sections.
  - Geophysical logging, circulation and drilling fluids, loss-circulation management, water and mud storage, cementing, risks, costs, and an estimated schedule to begin drilling.
  - A geophysical logs LAS file is available upon request.
- **Attachment context**
  - An attached end-of-well report describes the UE-27a reference borehole and related characterization work, including continuous coring, geophysical logging, groundwater sampling, and downhole instrumentation. This report documents prior project work; it does not identify additional commercial products or quantities for this RFI.
- **Commercial information**
  - No contract value, fixed performance period, product part numbers, or purchase quantities are provided. The anticipated structure is a time-and-materials master agreement with a base scope and two option scopes.

### Description

<p>MSTS is issuing this Request for Information (RFI) and Expression of Interest (EOI) to conduct market research and determine which companies would be interested in participating in a solicitation for the delivery of a wellbore, including management of all necessary subcontractors, to be drilled at the NNSS. See Attachments for details. Please note, Geophysical Logs LAS file is available upon request via email.</p>

[View original listing](https://sam.gov/opp/c10771d65900474e9c557b2f09c1eb05/view)