GRAHAM, B. T.

Oil // district 10 // lease#21990

op: PIONEER NATURAL RES. USA, INC.

cum_oil

268k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 2026-03

peak_month

2000-10

-- production_history

cum_oil: 268,021 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,779 BBL/mo

Di (annual)

11.5%

b-factor

0.1

EUR

203,258 BBL

R-squared

0.877

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5COX, JOHN L.29,1002000-05-12
4COX, JOHN L.19,1001997-06-10
3COX, JOHN L.29,1001987-09-14
1XCOX, JOHN L.19,3001981-03-10
EOF // data source: Texas Railroad Commission // 2026