RUMBAUGH "67"

Oil // district 8 // lease#26557

op: TETRAGON INVESTMENTS, LLC

cum_oil

357k BBL

cum_gas

0 MCF

wells

11

production

1993-01 — 2026-03

peak_month

1993-11

-- production_history

cum_oil: 356,517 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

7,275 BBL/mo

Di (annual)

41.2%

b-factor

0.2

EUR

264,721 BBL

R-squared

0.611

type

hyperbolic

-- wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HRUBETZ OIL COMPANY36,5751996-09-05
1AHRUBETZ OIL COMPANY36,5751996-09-05
11CLEAR FORK, INCORPORATED13,7001996-04-12
10CLEAR FORK, INCORPORATED13,7001991-01-17
8HRUBETZ OIL COMPANY26,4001985-03-19
202HRUBETZ OIL COMPANY13,8001983-07-01
203HRUBETZ OIL COMPANY13,5651983-07-01
7HRUBETZ OIL COMPANY14,0001983-02-10
5HRUBETZ OIL COMPANY15,5901982-12-09
4HRUBETZ OIL COMPANY16,4901982-11-22
3HRUBETZ OIL COMPANY16,5001982-10-26
EOF // multi-state drilling data platform // 2026