Fields: CALLAHAN COUNTY REGULAR
Cum Oil
101k BBL
Cum Gas
42 MCF
casinghead
Wells
13
Production
1993-01 — 2026-04
Peak Month
2007-12
Production History Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil: 100,924 BBL Cum Gas: 42 MCF
RRC production reported through Apr 2026 · recent months incomplete
Decline Curve Analysis
qi
667 BBL/mo
Di (annual)
14.4%
b-factor
0.3
EUR
73,937 BBL
R-squared
0.699
type
hyperbolic
Operator History (from monthly production reports)
Wells (13)
| WELL# | API | OPERATOR | PERMITS | DEPTH | LAST_ISSUED |
|---|---|---|---|---|---|
| 48 | 42-059-36709 | GRAYROCK ENERGY II, LLC | 1 | 4,000 | 2006-12-15 |
| 45 | 42-059-35296 | GRAYROCK ENERGY II, LLC | 1 | 3,400 | 1985-03-28 |
| 46 | 42-059-35178 | GRAYROCK ENERGY II, LLC | 1 | 3,400 | 1984-11-14 |
| 42 | 42-059-82419 | GRAYROCK ENERGY II, LLC | 1 | 4,000 | 1984-03-05 |
| 40 | 42-059-34202 | GRAYROCK ENERGY II, LLC | 1 | 3,300 | 1983-05-19 |
| 41 | 42-059-34203 | GRAYROCK ENERGY II, LLC | 1 | 3,300 | 1983-05-19 |
| 39 | 42-059-34104 | GRAYROCK ENERGY II, LLC | 1 | 3,300 | 1983-02-28 |
| 38 | 42-059-34099 | GRAYROCK ENERGY II, LLC | 1 | 3,300 | 1983-02-22 |
| 13 | 42-059-01721 | GRAYROCK ENERGY II, LLC | 1 | 3,200 | 1981-10-07 |
| 16 | 42-059-02356 | GRAYROCK ENERGY II, LLC | -- | -- | -- |
| 2 | 42-059-81347 | GRAYROCK ENERGY II, LLC | -- | -- | -- |
| 23 | 42-059-81352 | GRAYROCK ENERGY II, LLC | -- | -- | -- |
| 4 | 42-059-05969 | GRAYROCK ENERGY II, LLC | -- | -- | -- |