42-245-31431
Final CompletionM HALF CIRCLE RANCH
JEFFERSON County · District 3 · CHEVRON U. S. A. INC. · M HALF CIRCLE (10200)
Permits
4
Max Depth
11,000 ft
First Permit
1980-10-09
Latest Activity
1989-08-08
Lifespan
9 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1981-01-23
Shut-In
—
Plugged
1997-08-18
EWA / Production operator mismatch
Scheduling: CHEVRON U. S. A. INC. ≠ Production: ROCKBRIDGE OIL AND GAS, INC. (reported 1994-11)
Resolved via: scheduling → CHEVRON U. S. A. INC.
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
1993-01
Last Production
2003-08
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (9) Elevation 7 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE MIOCENE (Miocene (undifferentiated)) | 7,190 ft | -7,183 ft |
| HETEROSTEGINA | 7,640 ft | -7,633 ft |
| TOP HETEROSTEGINA | 7,640 ft | -7,633 ft |
| MARGINULINA | 8,212 ft | -8,205 ft |
| TOP MARGINULINA | 8,212 ft | -8,205 ft |
| FRIO | 8,589 ft | -8,582 ft |
| TOP FRIO (Frio) | 8,589 ft | -8,582 ft |
| MONCRIEF (HACKBERRY) | 10,203 ft | -10,196 ft |
| TOP MONCRIEF (HACKBERRY) SAND | 10,203 ft | -10,196 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (6)
| Interval | Type |
|---|---|
| 8,590–8,606 ft | Perforated |
| 9,752–9,755 ft | Perforated |
| 9,757–9,766 ft | Perforated |
| 10,203–10,207 ft | Perforated |
| 10,203–10,220 ft | Perforated |
| 10,215–10,220 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 3,049 ft | 1,880 sx |
| 7.625" | 8,998 ft | 858 sx |
| 2.375" | 10,076 ft | — |
Permit History (4)
M HALF CIRCLE RANCH · 10,902 ft
1989-08-08
M HALF CIRCLE RANCH · 10,902 ft
1988-11-22
M HALF CIRCLE RANCH · 10,902 ft
1980-10-09
M HALF CIRCLE RANCH · 11,000 ft
1980-10-09
Spud 1980-11-04
Applications (4)
Records & Logs
6 completion filings on record · 3 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 2
- Max Depth
- 11,000 ft
- Drill Type
- Vertical
- County
- JEFFERSON
- District
- 3
- Operator
- CHEVRON U. S. A. INC.
- Completed
- 1981-01-23
Operator
- Name
- TEXACO E & P INC
- Location
- MIDLAND
- P-5 Status
- Active (filed 2026-01-30)
- Cum Oil (all leases)
- 633,048,621 bbl
- Cum Gas (all leases)
- 4,264,158,043 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 9,272