Pioneer Drilling Co. has changed its name to Pioneer Energy Services Corp. The company's common stock will continue to trade on the New York Stock Exchange but will trade under the new ticker PES. Pioneer's website is now www.pioneeres.com. "Over the last five years, we have transformed Pioneer from a pure-play domestic land contract driller to a diversified energy services provider with operations across the United States and in Colombia," said CEO Wm. Stacy Locke. "Today, approximately 50% of our revenues and operating margin are derived from our production services segment. We operate 102 well servicing rigs, 117 wireline units, 11 coiled tubing units and an array of fishing and rental tools in addition to our 66 drilling rigs. Our core services are heavily concentrated in the Bakken, Eagle Ford, Permian and along the Gulf Coast, both onshore and offshore. This new name reflects who Pioneer is today."

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