MCLAUGHLIN ACCT-4

Oil // district 11 // lease#66956

op: SIMMONS, L.B. ENERGY, INC.

cum_oil

135k BBL

cum_gas

0 MCF

wells

10

production

1993-01 — 2026-03

peak_month

2015-09

-- production_history

cum_oil: 135,358 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,092 BBL/mo

Di (annual)

67.9%

b-factor

0.4

EUR

60,473 BBL

R-squared

0.847

type

hyperbolic

-- wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
152PARALLEL PETROLEUM LLC27,5002017-07-31
145PARALLEL PETROLEUM LLC14,5002014-09-26
118SIMMONS, L.B. ENERGY, INC.24,3001993-09-14
3BSIMMONS, L.B. ENERGY, INC.12,5721993-04-12
1BSIMMONS, L.B. ENERGY, INC.12,5851993-04-01
2BSIMMONS, L.B. ENERGY, INC.12,5721993-04-01
103SIMMONS, L.B. ENERGY, INC.34,0001992-09-16
31SIMMONS, L.B. ENERGY, INC.23,9001992-06-25
2ASTARKEY OILFIELD SERVICE, INC.22,6501985-09-23
1ASTARKEY OILFIELD SERVICE, INC.22,7501985-06-21
EOF // data source: Texas Railroad Commission // 2026