EX-21.1 3 dex211.htm SUBSIDIARIES OF PIONEER DRILING COMPANY Subsidiaries of Pioneer Driling 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, 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.

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%).

 

  6.

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

 

  7.

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

 

  8.

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

 

  9.

Pioneer Wireline Services, L.L.C., a Delaware limited liability company — 100% indirect subsidiary — 100% owned by Pioneer Wireline Services Holdings, Inc.

 

  10.

Pioneer Well Services, L.L.C., a Delaware limited liability company — 100% indirect subsidiary — 100% owned by Pioneer Production Services, Inc.

 

  11.

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