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, L.L.C., 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, L.L.C. (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, L.L.C. (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, L.L.C. (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, L.L.C. (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, L.L.C. (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, L.L.C., a Delaware limited liability company—100% indirect subsidiary—100% owned by Pioneer Wireline Services Holdings, Inc.
14. Pioneer Well Services, L.L.C., a Delaware limited liability company—100% indirect subsidiary—100% owned by Pioneer Production Services, Inc.
15. Pioneer Fishing & Rental Services, L.L.C., a Delaware limited liability company—100% indirect subsidiary—100% owned by Pioneer Production Services, Inc.