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Pioneer Natural Resources Alaska Inc
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Pioneer Natural Resources Libya ltd
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Pioneer Southwest Energy Partners USA LLC
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Westpan Resources LLC
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Pioneer Natural Resources (Tierra Del Fuego) S.R.L.
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DMLP CO
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Mesa Environmental Ventures Co
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Parker & Parsley 90 Spraberry Private Development LP
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Pioneer Natural Resources South Africa ltd
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TDF Holding Company LDC
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Pioneer NR Nigeria ltd
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Long Canyon Gas Company, LLC
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Petroleum South Cape Ltd
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Pioneer Southwest Energy Partners LP
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Pioneer Natural Resources Tunisia Ltd
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Mesa Offshore Royalty Partnership
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Pioneer Natural Resources Ventures Ltd
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Pioneer Natural Resources West Africa ltd
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Pioneer Resources Gabon ltd
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Pioneer Southwest Energy Partners Midstream LLC
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Parker & Parsley 87 A Conv. Ltd
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Pioneer Natural Gas Company
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Pioneer Natural Resources Equatorial Guinea ltd
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Pioneer Shelf Properties Incorporated
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Westpan NGL LLC
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Lorencito Gas Gathering, LLC
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Pioneer Natural Resources Nigeria Ltd
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Parker & Parsley Private Investment 89, L.P.
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STAT Land Co
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Pioneer Natural Resources Morocco ltd
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Pioneer Uravan Inc
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LF Holding Company LDC
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Parker & Parsley Argentina, Inc
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Midkiff Development Drilling Program, Ltd
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Pioneer Southwest Energy Partners USA LLC
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Pioneer Natural Resources UK ltd
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Pioneer Resources Africa ltd
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Pioneer Natural Resources Anaguid Ltd
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Pioneer International Resources Co
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Pioneer JDZ ltd
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Pioneer Nigeria Deepwater ltd
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Pioneer Natural Resources Foundation
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MESA OPERATING CO
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Pioneer Natural Resources Properties LLC
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Pioneer Natural Resources Algeria ltd
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Pioneer Retained Properties Company LLC
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Pioneer Natural Resources GP LLC
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Parker & Parsley Private Investment 88 LP
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