Pioneer Natural Resources Company (NYSE:PXD) (“Pioneer” or “the Company”) today announced that severe winter weather in Texas has significantly impacted the Company’s production and drilling operations in the Spraberry/Wolfcamp, Eagle Ford Shale and Barnett Shale Combo plays. The Spraberry/Wolfcamp area has been especially hard hit as heavy icing and low temperatures have resulted in extensive power outages, facilities freeze-ups, trucking curtailments and limited access to production and drilling facilities. An extensive recovery period is expected, and it is likely to be a few weeks before the full impact of this event can be determined. This unforeseen severe weather event was not accounted for in Pioneer’s production and financial guidance for the fourth quarter of 2013, which was provided in the Company’s earnings release on November 4, 2013. Pioneer expects to update its fourth quarter guidance once the full impact of anticipated weather-related downtime and associated repairs in the areas that were affected can be determined. Pioneer is a large independent oil and gas exploration and production company, headquartered in Dallas, Texas, with operations in the United States. For more information, visit Pioneer’s website at www.pxd.com. Except for historical information contained herein, the statements in this news release are forward-looking statements that are made pursuant to the Safe Harbor Provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements and the business prospects of Pioneer are subject to a number of risks and uncertainties that may cause Pioneer's actual results in future periods to differ materially from the forward-looking statements. These risks and uncertainties include, among other things, volatility of commodity prices, product supply and demand, the costs and results of drilling and operations, availability of equipment, services, resources and personnel required to complete the Company’s operating activities, access to and availability of transportation, processing, fractionation and refining facilities, the assumptions underlying production forecasts, quality of technical data, and environmental and weather risks. These and other risks are described in Pioneer's 10-K and 10-Q Reports and other filings with the U.S. Securities and Exchange Commission (SEC). In addition, Pioneer may be subject to currently unforeseen risks that may have a materially adverse impact on it. Pioneer undertakes no duty to publicly update these statements except as required by law.