OPERATORS · RRC 125944

Calpine Natural Gas L.P

102 PERMITS · PAGE 1 OF 3 · BY ISSUE DATE

IssuedPermitTypeCountyLease / wellDepthStatusAPIOperator change
Oct 28, 2005608458DrillColoradoGold #15,000Final completion08932455Now Everest Resource Company
Oct 28, 2005608456DrillColoradoR. Turner Gas Unit #15,000Spudded08932456Now VT Vistatex Energy LLC
Oct 10, 2005607595DrillColoradoKilimanjaro Gas Unit #118,500Plugged dry hole (P&A)08932452—
Sep 21, 2005606596RecompletionWebbMayers Gas Unit 4 #59,480Final completion47936207Now Rosetta Resources Operating LP
Sep 21, 2005606595RecompletionWebbSouth Callaghan Ranch #418,400—47935185—
Sep 14, 2005606325ReenterWebbSouth Callaghan Ranch #58R10,000—47935365Now Mobil Producing TX. & N.M. Inc.
Sep 14, 2005606325ReenterWebbSouth Callaghan Ranch #58R9,300Final completion47935365Now Mobil Producing TX. & N.M. Inc.
Sep 12, 2005605943RecompletionWebbSouth Callaghan Ranch #527,850Side one multi completion47935333Now Rosetta Resources Operating LP
Aug 22, 2005604780DrillWebbRottersman #3910,000—47939249—
Aug 10, 2005604046RecompletionWebbSantos #510,268—47937591—
Aug 9, 2005604581DrillWebbSouth Callaghan Ranch #2309,000—47939239—
Jul 28, 2005604048RecompletionWebbSantos #19,660—47932296—
Jul 18, 2005603490DrillChambersState Tract 100 Unit #211,000Final completion07132305Now Rosetta Resources Operating LP
Jul 13, 2005603300DrillColoradoDanklefs #14,800Spudded08932432Now Everest Resource Company
Jul 13, 2005603300DrillColoradoDanklefs #14,798Final completion08932432Now Everest Resource Company
Jul 11, 2005603131RecompletionWebbSouth Callaghan Ranch #1928,900Final completion47938344Now Aldine Oil and Gas LP
May 11, 2005600552RecompletionWebbLilia Bruni #510,392—47932871—
Apr 15, 2005560524RecompletionWebbBruni-Summers #139,286Final completion47936979Now Arete Operating Company III LLC
Feb 28, 2005558212DrillWebbSouth Callaghan Ranch #2319,000Final completion47939040Now Rosetta Resources Operating LP
Jan 14, 2005556110RecompletionWebbS. J. Martin #B 99,550Side one multi completion47937723Now Arete Operating Company III LLC
Jan 13, 2005555941DrillColoradoWaligura Unit #110,000Spudded08932398Now Rosetta Resources Operating LP
Jan 13, 2005555941DrillColoradoWaligura Unit #110,020Final completion08932398Now Rosetta Resources Operating LP
Dec 3, 2004554234DrillChambersState Tract 100 Unit #113,540Final completion07132285Now Davis Petroleum Corp.
Nov 29, 2004554014DrillColoradoCelestina Ammann Unit #B 110,000—08932394Now Weathers Exploration Inc.
Nov 29, 2004554014DrillColoradoCelestina Ammann Unit #B 110,000Side one multi completion08932394Now Weathers Exploration Inc.
Oct 22, 2004552595RecompletionWebbSouth Callaghan Ranch #318,450—47935078—
Oct 13, 2004552090RecompletionWebbSouth Callaghan Ranch #618,000—47935398—
Oct 12, 2004552117RecompletionWebbSouth Callaghan Ranch #978,934—47935639—
Oct 11, 2004552043RecompletionWebbSouth Callaghan Ranch #988,667—47935610—
Jun 4, 2004546443RecompletionLive OakBlock 76 Unit #27,850Unperforated completion29700646Now Mobil Oil Corporation
May 28, 2004546198RecompletionWebbSouth Callaghan Ranch #69,001Final completion47933429Now Rosetta Resources Operating LP
Apr 26, 2004544822RecompletionWebbJohn Mayers #1111,000Final completion47938479Now Rosetta Resources Operating LP
Mar 22, 2004543498DrillWebbM. M. A. Cattle Co. #1111,000Final completion47938667Now Arete Operating Company II LLC
Mar 22, 2004541984RecompletionWebbCookie McKendrick #19,416Final completion47937100Now White Oak Operating Company LLC
Feb 19, 2004542215DrillWebbSouth Callaghan Ranch #2298,000Unperforated completion47938639Now Rosetta Resources Operating LP
Feb 18, 2004542099RecompletionWebbSouth Callaghan Ranch #777,547Final completion47935459Now Rosetta Resources Operating LP
Feb 17, 2004542048RecompletionWebbSchwarz, E. H. #199,200—47937002—
Jan 23, 2004541096DrillWebbSouth Callaghan Ranch #22610,000Side one multi completion47938617Now Aldine Oil and Gas LP
Jan 22, 2004540745RecompletionWebbF. J. Gill #511,000Final completion47936880Now TX Energy Services LLC
Jan 15, 2004540767RecompletionWebbP. H. Stanford #59,100Final completion47938426Now Rosetta Resources Operating LP
Dec 23, 2003539859RecompletionWebbSouth Callaghan Ranch #20510,500Final completion47938416Now Rosetta Resources Operating LP
Dec 18, 2003539865RecompletionWebbSouth Callaghan Ranch #2008,800Final completion47938383Now Aldine Oil and Gas LP
Dec 10, 2003539478DrillWebbSouth Callaghan Ranch #2199,700Final completion47938578Now Rosetta Resources Operating LP
Dec 4, 2003538257RecompletionWebbSouth Callaghan Ranch #2098,235Final completion47938397Now Rosetta Resources Operating LP
Nov 18, 2003538625RecompletionWebbMartin Sophie J. #39,200—47932508Now Arete Operating Company III LLC
Nov 18, 2003538625RecompletionWebbMartin, Sophie J. #39,200Final completion47932508Now Arete Operating Company III LLC
Nov 7, 2003538253RecompletionWebbFausto #510,500—47937394—
Oct 10, 2003537360RecompletionWebbMayers, John #1111,000Final completion47938479Now Rosetta Resources Operating LP
Sep 16, 2003536014RecompletionWebbMartin, J. C. 111 #39,400Final completion47932375Now Michael Petroleum Corporation
Sep 4, 2003536013RecompletionWebbMartin, J. C. 111 #169,567—47936691Now Arete Operating Company III LLC