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Prime Downhole Manufacturing

Prime Downhole Manufacturing is a Houston, Texas-based provider of engineering and precision machining services to the Oil & Gas industry, with a focus today on downhole products. Prime began operations in late 2015 and the Company’s current product offerings include contract machining of downhole tools and the manufacturing of bearings, PDC bits, and eccentric and concentric reamers. Prime also manufactures and repairs breakout machines and bucking units for assembling and disassembling threaded connections. Prime’s customer base includes onshore and offshore oilfield service (OFS) providers.

https://vikingpt.com/
Initial Investment: 2018
Realized Date: December 2025
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  • Broken Oak Investments LLC
  • Switchgrass E&P, LLC
  • SandRidge Energy, Inc.
  • Bayou Well Services
  • Rimrock Resource Operating
  • Breitburn Energy Partners L.P.
  • Moriah Henry Partners
  • Oryx Midstream Services II
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  • Maverick Brothers Energy
  • Permian Resources
  • RAM Energy Resources
  • Post Oak Minerals III
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  • Ichthys Energy Partners
  • Linn Energy, LLC
  • UpCurve II
  • Cornerstone Petroleum Resources
  • PetroEdge Energy III
  • Balcones Energy Holdings
  • CPX Piceance, LLC
  • National Specialty Alloys
  • Crown Oil Partners V/ BC Operating
  • Tri-C Energy Partners, LLC
  • Post Oak Minerals II
  • Chaparral Energy
  • Mavros Minerals
  • Layne Water Midstream
  • Nadel and Gussman NV, LLC
  • Richland-Stryker Generation, LLC
  • Quantent Energy Partners, LLC
  • Core Minerals Management II
  • Midway Energy Partners
  • Crown Oil Partners VI/ BC Operating
  • Mavros Minerals II
  • EV Energy Partners
  • UpCurve Energy
  • Atlas Energy Resources, LLC
  • Prime Downhole Manufacturing
  • Tiburon Oil & Gas Partners, LLC
  • Black Oak Resources, LLC
  • PetroEdge Energy IV
  • Post Oak Minerals I
  • Refinery Specialties, Inc.
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  • Petro Peak Energy
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