RICHARDSON UNIT

Oil // district 11 // lease#4610

op: CHOLLA PETROLEUM, INC.

fields: P. H. D.

cum_oil

1.5M BBL

cum_gas

0 MCF

wells

26

production

1993-01 — 2026-01

peak_month

1993-01

-- production_history

cum_oil: 1,509,417 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,571 BBL/mo

Di (annual)

14.6%

b-factor

1.2

EUR

1,814,762 BBL

R-squared

0.857

type

hyperbolic

-- wells (26)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
14CHOLLA PETROLEUM, INC.33,9002006-09-19
15CHOLLA PETROLEUM, INC.14,9992005-04-04
16CHOLLA PETROLEUM, INC.14,9992005-04-04
17CHOLLA PETROLEUM, INC.14,9992005-04-04
18CHOLLA PETROLEUM, INC.14,9992005-04-04
19CHOLLA PETROLEUM, INC.14,9992005-03-18
1WBHP PETROLEUM (AMERICAS) INC.13,8001988-10-14
2WBHP PETROLEUM (AMERICAS) INC.13,8001988-10-14
3WBHP PETROLEUM (AMERICAS) INC.13,9001988-10-14
4WBHP PETROLEUM (AMERICAS) INC.13,8001988-10-14
5WBHP PETROLEUM (AMERICAS) INC.13,4001988-10-14
6WBHP PETROLEUM (AMERICAS) INC.13,8001988-10-14
13BHP PETROLEUM (AMERICAS) INC.14,0001985-10-28
8ENERGY RESERVES GROUP, INC.14,0001985-05-14
9ENERGY RESERVES GROUP, INC.14,0001985-04-18
12ENERGY RESERVES GROUP, INC.14,0001985-04-11
10ENERGY RESERVES GROUP, INC.14,0001985-04-03
11ENERGY RESERVES GROUP, INC.14,0001985-04-03
7ENERGY RESERVES GROUP, INC.14,3051984-11-30
142-169-01040--------
1D42-169-01145--------
242-169-01045--------
342-169-01046--------
442-169-01047--------
542-169-01048--------
642-169-01023--------
EOF // data source: Texas Railroad Commission // 2026