Petrora

LEASES · O-10-30568 · OIL · DISTRICT 08

Leftfield

No volume since Jan 2021

Pioneer Natural Res. USA, Inc. · Glasscock County · Dewey Lake, S. (Strawn) field

Leftfield is an RRC oil lease (O-10-30568) in Glasscock County operated by Pioneer Natural Res. USA, Inc., with one well completed on it.

It has reported 12.5K barrels of oil and 69.7K mcf of gas since January 1993, last reporting volume in January 2021 (statewide data runs through April 2026).

No volume was reported in the last 12 months; the last was in January 2021.

10 operators have filed production on it, most recently Pioneer Natural Res. USA, Inc. since February 2021.

12.5K
bbl oil, all reported
69.7K
mcf gas incl. casinghead
0
bbl oil, last 12 reported
—
vs the 12 before
1
wells completed on it
155
peak month, bbl (May 1993)

PDQ LEASE REPORTS · FIRST JAN 1993 · LAST VOLUME JAN 2021 · 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 0 · prior 12 0

0501001502015201620172018201920202021202220232024

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

02004002015201620172018201920202021202220232024

Who reported it

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

  1. Simpson Oil CompanyJan 1993 → Feb 1994 · 14 mo
  2. Simpson Bros. Oil Co.-OdessaMar 1994 → Jan 2001 · 83 mo
  3. Simpson Oil CompanyFeb 2001 → Oct 2004 · 45 mo
  4. Simpson Oil LLCNov 2004 → Jan 2008 · 39 mo
  5. Great Basin Petroleum Serv, L.P.Feb 2008 → Jul 2008 · 6 mo
  6. Great Basin Well Service Corp.Aug 2008 → May 2015 · 82 mo
  7. Veritas Energy, LLCJun 2015 → Sep 2016 · 16 mo
  8. De Operating LLCOct 2016 → Apr 2017 · 7 mo
  9. Parsley Energy Operations, LLCMay 2017 → Jan 2021 · 45 mo
  10. Pioneer Natural Res. USA, Inc.Feb 2021 → Apr 2024 · 39 mo

Wells on the lease

FROM COMPLETION REPORTS · PRODUCTION ABOVE IS THEIR TOTAL

1

wells completed on the lease

Plugged
1

Operates them now

Pioneer Natural Res. USA Inc.
1

Newest permits

All 1 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-10-30568, documented in the API reference.