EX-21.1 2 dex211.htm SUSIDIARIES OF PIONEER DRILLING SUSIDIARIES OF PIONEER DRILLING

EXHIBIT 21.1

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

 

  1. PDC MGMT. CO. (formerly SOTEX Exploration Company), a Texas corporation—100% Direct Subsidiary—1% general partner of Pioneer Drilling Services, Ltd.

 

  2. PDC Investment Corp., A Delaware corporation—100% Direct Subsidiary—99% limited partner of Pioneer Drilling Services, Ltd.

 

  3. Pioneer Drilling Services, Ltd. (formerly Pioneer Drilling Co., Ltd.), a Texas limited Partnership—100% Indirect Subsidiary—owned by PDC MGMT. CO. (1%) and PDC Investment Corp. (99%).

 

  4. South Texas Drilling Company, a Texas corporation—100% Direct Subsidiary.