April 31, 2007 – SAN ANTONIO, TEXAS – Pioneer Drilling Company (AMEX: PDC) announced today that it intends to release the financial results for its fiscal fourth quarter of 2007 on Thursday, May 17, 2007 at 6:00 a.m. eastern time. In conjunction with the upcoming release, Pioneer Drilling has scheduled a conference call, which will be broadcast live over the Internet, on Thursday, May 17, 2007 at 11:00 a.m. eastern time (10:00 a.m. central).

What: Pioneer Drilling’s Fiscal Fourth Quarter Conference Call

When: Thursday, May 17, 2007 – 11:00 a.m. eastern time

How: Live via phone - By dialing (303) 262-2139 and asking for the Pioneer Drilling call 10 minutes prior to the start time. Or live over the Internet by logging on to the web address below.

Where: http://www.pioneerdrlg.com www.pioneerdrlg.com. For more information,&E at 713-529-6600  or email dmw@drg-e.com.

Pioneer Drilling provides land contract drilling services to independent and major oil and gas operators drilling wells in Texas, Louisiana, Oklahoma and in the Rocky Mountain region. Its fleet consists of 66 land drilling rigs that drill in depth ranges between 6,000 and 18,000 feet.

For those who cannot listen to the live call, a replay will be available through May 24, 2007, and may be accessed by calling (303) 590-3000 using pass code 11089300#. Also, an archive of the webcast will be available shortly after the call on please contact Donna Washburn at DRG