JOHNSTON

Oil // district 11 // lease#62845

op: SIERRA LIMA OIL & GAS, LLC

cum_oil

152k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 2026-03

peak_month

1999-03

-- production_history

cum_oil: 151,529 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,036 BBL/mo

Di (annual)

12.1%

b-factor

0.2

EUR

123,026 BBL

R-squared

0.955

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4DROCKER A OPERATING COMPANY13,7961995-03-02
3ROCKER A OPERATING COMPANY14,3001992-12-10
2ROCKER A WELL SERVICE, INC.14,4001982-10-04
1ROCKER A WELL SERVICE, INC.14,3001980-04-29
EOF // data source: Texas Railroad Commission // 2026