ROCKER B -M-

Oil // district 9 // lease#4855

op: JM COX RESOURCES, L.P.

cum_oil

1.1M BBL

cum_gas

0 MCF

wells

47

production

1993-01 — 2019-01

peak_month

1993-12

-- production_history

cum_oil: 1,099,411 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

6,243 BBL/mo

Di (annual)

5.5%

b-factor

0.0

EUR

1,271,965 BBL

R-squared

0.741

type

exponential

-- wells (47)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
37DISCOVERY NATURAL RESOURCES LLC28,5002021-12-30
43GRAHAM ROYALTY, LTD.28,5002021-12-30
48COX, JOHN L.17,2001997-11-26
47COX, JOHN L.17,2001997-05-22
46COX, JOHN L.17,2001996-12-02
45COX, JOHN L.17,0001994-09-22
44GRAHAM ROYALTY, LTD.17,0001991-12-06
42COX, JOHN L.17,2001985-10-23
41COX, JOHN L.17,2001985-09-10
40COX, JOHN L.17,2001985-07-30
38COX, JOHN L.17,4001985-04-22
39COX, JOHN L.17,4001985-04-22
35COX, JOHN L.17,2001984-05-15
36COX, JOHN L.17,2001984-05-15
32COX, JOHN L.17,4001984-03-26
33COX, JOHN L.17,4001984-03-26
34COX, JOHN L.17,3001984-02-16
31COX, JOHN L.17,3001984-02-14
28COX, JOHN L.17,4001983-08-09
29COX, JOHN L.17,4001983-08-09
30COX, JOHN L.17,4001983-08-09
27COX, JOHN L.17,5001983-05-04
8 XCOX, JOHN L.17,4001982-04-01
14 XCOX, JOHN L.17,5001982-03-03
20 XCOX, JOHN L.17,5001982-03-03
9 XCOX, JOHN L.17,5001982-03-03
21 XCOX, JOHN L.17,5001981-12-31
25 XCOX, JOHN L.17,5001981-12-31
4 XCOX, JOHN L.17,5001981-11-30
1042-383-10932--------
1142-383-10765--------
12D42-383-10766--------
1342-383-20246--------
1542-383-10958--------
1642-383-10868--------
1742-383-10869--------
1842-383-10878--------
1942-383-10870--------
242-383-10763--------
2242-383-10960--------
2342-383-10961--------
2442-383-10962--------
2642-383-10963--------
342-383-10786--------
542-383-10788--------
642-383-10789--------
742-383-10931--------
EOF // data source: Texas Railroad Commission // 2026