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PAN GEO ATLAS CORPORATION
Merged with Lane-Wells Company by Dresser Industries to form Dresser Atlas in 1968.



PECTEN INTERNATIONAL COMPANY
See Shell EP International Ventures Inc



INTERNATIONAL PEDCO ENERGY CORPORATION
Acquired by Lateral Vector Resources Inc in March 1996.



PEMBINA CORP
see Talisman Energy Inc.



PENNZENERGY COMPANY
Merged with Devon Energy Corp in May 1999



PENNZOIL EXPLORATION & PRODUCTION COMPANY
Pennzoil's exploration & production business became the PennzEnergy Co after the products business merger with Quaker State Corp in December 1998



PENZANCE PETROLEUM LTD
Acquired by Richards Oil & Gas Limited in December 2005



PEREGRINE ENERGY LIMITED
Acquired by Mahalo Energy Ltd in June 2006



PERMA RESOURCES LTD
Dissolved December 2000.



PERMIAN CORPORATION, THE
Acquired by Ashland Oil Inc in 1991 and merged with Scurlock Oil Co to form Scurlock Permian.



PETROFINA SA
Acquired in 1999 by Total SA forming Total Fina SA.



PETROHAWK ENERGY LTD
Acquired by Fox Energy Corp in November 1999.



PETROL PROPERTIES LTD
Dissolved September 1999.



PETROLE SAINT HONORE
Went out of business in mid 1993.



PETROLEOS DE PORTUGAL - PETROGAL
Reorganised into a new holding company, Galp Energia SGPS SA, in 2000.



PETROLEUM AUTHORITY OF THAILAND - PTT
Became PTT Public Company Ltd after one third of the company was offered to the public in October 2001.



VENOCO PATAGONIA LIMITED
Acquired by Petro Andina Resources Inc. in March 2004.



PETROLEUM PRODUCTION MANAGEMENT INC
Sold to Petroleum Resources Management Inc. in 1983.



PETROMET RESOURCES LTD
Acquired by Talisman Energy Inc in May 2001



PETROREP RESOURCES LTD
Acquired by Taurus Exploration Ltd in May 2000



PETROSTAR PETROLEUMS INC
Acquired by Crestar Energy Inc in June 1996



PETROVENTURES RESOURCES LTD
Dissolved March 1994.



PETROWEST MANAGEMENT SERVICES LTD
Dissolved May 1995.



PICT PETROLEUM PLC
Acquired by Premier Oil Plc in 1995.



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