EX-21.1 4 d366354dex211.htm SUBSIDIARIES OF PIONEER DRILLING COMPANY Subsidiaries of Pioneer Drilling Company

EXHIBIT 21.1

The following is a list of all of Pioneer Drilling Company’s direct and indirect subsidiaries:

 

  1. Pioneer Drilling Services, Ltd., a Texas corporation—100% direct subsidiary.

 

  2. Pioneer Global Holdings, Inc., a Delaware corporation—100% indirect subsidiary-100% owned by Pioneer Drilling Services, Ltd.

 

  3. Pioneer Services Holdings, LLC, a Delaware limited liability company—100% indirect subsidiary-100% owned by Pioneer Global Holdings, Inc.

 

  4. Pioneer Latina Group SDAD, Ltda., a Panama corporation—100% indirect subsidiary-owned by Pioneer Global Holdings, Inc. (99%) and Pioneer Services Holdings, LLC (1%).

 

  5. PDC Holdings de Mexico, S. de R.L. de C.V.—100% indirect subsidiary-owned by Pioneer Global Holdings, Inc. (99%) and Pioneer Services Holdings, LLC (1%).

 

  6. PDC Logistics de Mexico, S. de R.L. de C.V.—100% indirect subsidiary-owned by PDC Holdings de Mexico, S. de R.L. de C.V. (99.9%) and Pioneer Services Holdings, LLC (0.1%).

 

  7. PDC Drilling Mexicana, S. de R.L. de C.V.—100% indirect subsidiary-owned by PDC Holdings de Mexico, S. de R.L. de C.V. (99.9%) and Pioneer Services Holdings, LLC (0.1%).

 

  8. Pioneer de Colombia SDAD, Ltda., a Panama corporation—100% indirect subsidiary-owned by Pioneer Latina Group SDAD, Ltda. (99%) and Pioneer Services Holdings, LLC (1%).

 

  9. Pioneer de Colombia SDAD, Ltda., Surcusal Colombia, a Colombian branch—100% indirect subsidiary-100% owned by Pioneer de Colombia SDAD, Ltda.

 

  10. Proveedora Internacional de Taladros S.A.S—100% indirect subsidiary-100% owned by Pioneer Global Holdings, Inc.

 

  11. Pioneer Production Services, Inc., a Delaware corporation—100% direct subsidiary.

 

  12. Pioneer Wireline Services Holdings, Inc., a Delaware corporation—100% indirect subsidiary-100% owned by Pioneer Production Services, Inc.

 

  13. Pioneer Wireline Services, LLC, a Delaware limited liability company—100% indirect subsidiary-100% owned by Pioneer Wireline Services Holdings, Inc.

 

  14. Pioneer Well Services, LLC, a Delaware limited liability company—100% indirect subsidiary-100% owned by Pioneer Production Services, Inc.

 

  15. Pioneer Fishing & Rental Services, LLC, a Delaware limited liability company—100% indirect subsidiary-100% owned by Pioneer Production Services, Inc.

 

  16. Go-Coil, L.L.C., a Louisiana limited liability company—100% indirect subsidiary-100% owned by Pioneer Production Services, Inc.