OPERATORS · RRC 125944 · P-5 STATUS Y

Calpine Natural Gas L.P

Houston, TX

Calpine Natural Gas L.P has filed no drilling permits in the past 12 months; its most recent permit was issued October 28, 2005.

The RRC wellbore file lists 14 wells under its operatorship.

85 drilling permits have been issued to this operator number since 2002; its P-5 organization report was last filed December 8, 2006.

0: permits, last 12 months
—: vs prior 12 months (0)
0: counties, 12 months
0: producing wells, of 14 of record
19: leases it reports
—: horizontal, 12 months

WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026

From permit to spud

FROM THE DATES ON ITS W-1 PERMITS · ALL TIME

A permit is a plan, not a well. These figures count only permits old enough to have spudded, six months and more, and read the spud, cancel, and expiry dates the RRC records on each one.

72%: spud rate · 61 of 85 mature permits
18: median days permit to spud · middle half 10–39
0: spuds, last 180 days
0%: cancelled · 0 permits
24: expired undrilled
21: permits a year over 4 active years

Where

Counties by permits in the last 12 months, with all-time permits and current wells of record there.

County	12 mo	All time	Wells	Last
Webb county →	—	71	6	Sep 21, 2005
Colorado county →	—	9	0	Oct 28, 2005
Brazoria county →	—	2	0	Jan 21, 2003
Chambers county →	—	2	0	Jul 18, 2005
Live Oak county →	—	1	0	Jun 4, 2004

All 85 permits, searchable → · Leases it reports → · On the map →

Formations in its completed wells

Tops reported on completion filings for wells it operates. RRC wellbore file. About tops →

Formation	Wells	Permitted last 3 yrs
Queen City	2	0
Wilcox	2	0
Jackson	1	0
Yegua	1	0
Vicksburg	1	0
Frio	1	0
Catahoula	1	0

Production by month

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Barrels on leases where this operator filed the production report. Lease-level by design; the latest months are revised upward as late reports arrive. How production is reported →

0: bbl oil, last 12 reported months
—: vs the 12 months before
0: mcf gas incl. casinghead, last 12
62.5K: bbl oil since reporting began

No lease production reported under this operator number in the last three years.

Beyond the permit record

RRC wellbore file

Wells of record

14: on the schedule
0: producing
0: shut in
0: injection
0: temp. abandoned
14: plugged

How it got them

1: permitted itself
12: acquired from others
41: permitted, now run by others

Acquired means the well's permit names a different operator than the schedule does today. Transfers and operator numbers →

RRC UIC permits · H-10 reported volumes

Disposal and injection

0: active UIC permits of 1
0: permitted bbl/day, active
0: bbl injected, last 12 reported months
Jun 2025: reported through

By county

Webb

0 active

0 bbl/d

Permitted volume is a ceiling, not throughput. How to read it →

Permit types

Last 12 months against the prior 12, and all time. A type opens the permit history filtered to it. What the types mean →

Type	12 mo	Prior 12	All time
Drill	0	0	44
Recompletion	0	0	39
Reenter	0	0	2

Fields

RRC regulatory fields with the most wells of record under this operator. The field opens its page; the count opens this operator's wells in it.

Field	Wells	Producing
Wildcat8001	5	0
Clip (Frio Lower)19028076	2	0
B-S (Frio 3540)4842250	1	0
Benavides (Lobo Cons.)7078475	1	0
Cole E. ( Mirando 2300)19463500	1	0
Fausto (Lobo)30405400	1	0
Los Mogotes (Queen City)54976333	1	0
Clip (Miocene Lower)19028228	1	0
B-S (Frio 3380)4842200	1	0

P-5 organization report

As registered with the RRC. About the P-5 →

Registration: Status code Y; Last filed Dec 8, 2006

Address: 717 Texas Suite 2800; Houston, TX 77002

Officers and agents: National Registered Agents, Inc. · Texas Resident Agent; Calpine Natural Gas GP, LLC · General Partner; Cartwright, Peter · Ceo/Chairman; Berilgen, Bulent A. · President

Latest permits

NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES

Permit	Seen	Issued	Operator	County	Lease / well	Depth	API
608458	Oct 28, 2005	Oct 28, 2005	Calpine Natural Gas L.P.	Colorado	Gold #1	5,000	08932455
608456	Oct 28, 2005	Oct 28, 2005	Calpine Natural Gas L.P.	Colorado	R. Turner Gas Unit #1	5,000	08932456
607595	Oct 10, 2005	Oct 10, 2005	Calpine Natural Gas L.P.	Colorado	Kilimanjaro Gas Unit #1	18,500	08932452
606596	Sep 21, 2005	Sep 21, 2005	Calpine Natural Gas L.P.	Webb	Mayers Gas Unit 4 #5	9,480	47936207
606595	Sep 21, 2005	Sep 21, 2005	Calpine Natural Gas L.P.	Webb	South Callaghan Ranch #41	8,400	47935185
606325	Sep 14, 2005	Sep 14, 2005	Calpine Natural Gas L.P.	Webb	South Callaghan Ranch #58R	10,000	47935365
606325	Sep 14, 2005	Sep 14, 2005	Calpine Natural Gas L.P.	Webb	South Callaghan Ranch #58R	9,300	47935365
605943	Sep 12, 2005	Sep 12, 2005	Calpine Natural Gas L.P.	Webb	South Callaghan Ranch #52	7,850	47935333
604780	Aug 22, 2005	Aug 22, 2005	Calpine Natural Gas L.P.	Webb	Rottersman #39	10,000	47939249
604046	Aug 10, 2005	Aug 10, 2005	Calpine Natural Gas L.P.	Webb	Santos #5	10,268	47937591
604581	Aug 9, 2005	Aug 9, 2005	Calpine Natural Gas L.P.	Webb	South Callaghan Ranch #230	9,000	47939239
604048	Jul 28, 2005	Jul 28, 2005	Calpine Natural Gas L.P.	Webb	Santos #1	9,660	47932296
603490	Jul 18, 2005	Jul 18, 2005	Calpine Natural Gas L.P.	Chambers	State Tract 100 Unit #2	11,000	07132305
603300	Jul 13, 2005	Jul 13, 2005	Calpine Natural Gas L.P.	Colorado	Danklefs #1	4,800	08932432
603300	Jul 13, 2005	Jul 13, 2005	Calpine Natural Gas L.P.	Colorado	Danklefs #1	4,798	08932432

Full permit history →

About this data

Registration from the RRC P-5 organization report, refreshed weekly. Permits from the OGA049M master and daily daf420 files; wells of record from the EWA wellbore schedule; production from PDQ lease reports at the last vintage; disposal from UIC permits and H-10 reports. Summary figures are rebuilt nightly.

Developers: this page as JSON is GET /v1/data/operators/tx/125944, documented in the API reference.