Petrora

LEASES · O-13-2487 · OIL · DISTRICT 09

Cox, D. A.

Reporting

Sydri Operating, LLC · Cooke County · Walnut Bend (Cox) field

Cox, D. A. is an RRC oil lease (O-13-2487) in Cooke County operated by Sydri Operating, LLC, with 10 wells completed on it.

It has reported 5.07K barrels of oil and 3.1K mcf of gas since January 1993, last reporting volume in April 2026 (statewide data runs through April 2026).

The last 12 reported months total 369 barrels of oil, up 6% on the year before; the lease peaked at 90 barrels in September 2008.

7 operators have filed production on it, most recently Sydri Operating, LLC since July 2021.

5.07K
bbl oil, all reported
3.1K
mcf gas incl. casinghead
369
bbl oil, last 12 reported
+6%
vs the 12 before
10
wells completed on it
90
peak month, bbl (Sep 2008)

PDQ LEASE REPORTS · FIRST JAN 1993 · 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 369 · prior 12 347(+6%)

02040602017201820192020202120222023202420252026

Gas by month

Gas-well gas plus casinghead gas, mcf. On an oil lease all gas is reported as casinghead. The latest months are revised upward as late reports arrive.

Last 12 months 0 · prior 12 0

0501001502017201820192020202120222023202420252026

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. Arco Oil & Gas Co.Jan 1993 → Feb 1994 · 14 mo
  2. Vastar Resources, Inc.Mar 1994 → May 1999 · 63 mo
  3. Gruy Petroleum Management Co.Jun 1999 → Apr 2006 · 83 mo
  4. Cimarex Energy Co. of ColoradoMay 2006 → Dec 2012 · 80 mo
  5. Merit Energy CompanyJan 2013 → Nov 2020 · 95 mo
  6. Team Operating, L.L.C.Dec 2020 → Jun 2021 · 7 mo
  7. Sydri Operating, LLCJul 2021 → Jul 2026 · 61 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

10

wells completed on the lease

Shut IN
6
NO Type on File
3
Plugged
1

Operates them now

Sydri Operating LLC
9
Arco Oil & Gas Co.
1

Newest permits

  • 09701010 #43Aug 27, 2008
  • — #15A—
  • — #16—
  • — #17—
  • — #24—
  • — #27—

All 10 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-13-2487, documented in the API reference.