TXL '21'

Oil · District 7C · Lease #17975

Operator: WINN OPERATING, LLC

Cum Oil

334k BBL

Cum Gas

1.7M MCF

casinghead

Wells

6

Production

2012-05 — 2026-04

Peak Month

2013-07

Production History

Cum Oil: 333,708 BBL Cum Gas: 1,666,288 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,226 BBL/mo

Di (annual)

35.8%

b-factor

0.2

EUR

260,348 BBL

R-squared

0.742

type

hyperbolic

Operator History (from monthly production reports)

2025-06 — 2026-07 WINN OPERATING, LLC 14 mo
2012-05 — 2025-05 COG OPERATING LLC 157 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3SM ENERGY COMPANY112,0002013-02-27
11WINN OPERATING, LLC112,0002013-01-30
12WINN OPERATING, LLC112,0002012-06-21
2WINN OPERATING, LLC112,0002012-05-08
16WINN OPERATING, LLC112,0002012-02-22
15SM ENERGY COMPANY112,0002012-02-10