Petrora

LEASES · O-10-35613 · OIL · DISTRICT 08

Sullivan Unit

Reporting

Caroil, LLC · Pecos County · Brown & Thorp (Clear Fork) field

Sullivan Unit is an RRC oil lease (O-10-35613) in Pecos County operated by Caroil, LLC, with 30 wells completed on it.

It has reported 151K barrels of oil since January 1998, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 3.37K barrels of oil, down 9% on the year before; the lease peaked at 1.35K barrels in April 1998.

7 operators have filed production on it, most recently Caroil, LLC since April 2017.

151K
bbl oil, all reported
0
mcf gas incl. casinghead
3.37K
bbl oil, last 12 reported
-9%
vs the 12 before
30
wells completed on it
1.35K
peak month, bbl (Apr 1998)

PDQ LEASE REPORTS · FIRST JAN 1998 · LAST VOLUME APR 2026 · STATEWIDE DATA THROUGH APR 2026

Oil by month

Barrels reported on Form PR for the whole lease. The latest months are revised upward as late reports arrive.

Last 12 months 3,368 · prior 12 3,700(-9%)

02004006002017201820192020202120222023202420252026

Decline curve
None shown. Petrora fits an Arps curve only when the last ten years of oil reports follow one decline closely enough to project (R² of 0.7 or better over at least a year since the peak). This lease's recent history does not, so a projection would be a guess dressed as a number.

Who reported it

Each run of months one operator filed the production report, oldest first.

  1. BC Operating, Inc.Jan 1998 → Feb 1998 · 2 mo
  2. Taurus Exploration U.S.A., Inc.Mar 1998 → Nov 1998 · 9 mo
  3. Energen Resources CorporationDec 1998 → May 2003 · 54 mo
  4. Hodges Oil & GasJun 2003 → Jan 2016 · 152 mo
  5. El Jefe Oil & GasFeb 2016 → Dec 2016 · 11 mo
  6. El Jefe Oil and Gas, LLCJan 2017 → Mar 2017 · 3 mo
  7. Caroil, LLCApr 2017 → Jul 2026 · 112 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

30

wells completed on the lease

Producing
13
Injection
11
Shut In
3
Plugged
3

Operates them now

Caroil LLC
14
Taurus Exploration U.S.A. Inc.
11
Energen Resources Corporation
5

Newest permits

All 30 wells, searchable →

About this data

Monthly oil, gas, and casinghead from the RRC PDQ production dump, which lags the reporting month by two to three months; figures shown through Apr 2026. Wells from completion reports; operator runs from who filed each month's report.

Developers: this page as JSON is GET /v1/data/leases/tx/o-10-35613, documented in the API reference.