CYPRIDGE-MANGOLD UNIT

Oil // district 13 // lease#10752

op: STEPHENS & JOHNSON OPERATING CO.

fields: K-M-A

cum_oil

1.0M BBL

cum_gas

0 MCF

wells

34

production

1993-01 — 2026-03

peak_month

2014-05

-- production_history

cum_oil: 1,016,640 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

4,793 BBL/mo

Di (annual)

40.3%

b-factor

1.9

EUR

743,565 BBL

R-squared

0.928

type

hyperbolic

-- wells (34)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3039STEPHENS & JOHNSON OPERATING CO.33,9912013-12-05
3052STEPHENS & JOHNSON OPERATING CO.14,2002013-05-21
3051S & J OPERATING CO.14,0001993-07-27
3050S & J OPERATING CO.14,0001992-05-26
3048FINA OIL & CHEMICAL COMPANY14,0001990-03-01
3049FINA OIL & CHEMICAL COMPANY24,0001990-03-01
3047FINA OIL & CHEMICAL COMPANY14,0001990-02-27
209FINA OIL & CHEMICAL COMPANY14,0001990-01-12
3046FINA OIL & CHEMICAL COMPANY14,0001986-05-30
3045FINA OIL & CHEMICAL COMPANY14,1001985-11-22
109AMERICAN PETROFINA CO. OF TEX.13,8501985-06-07
208FINA OIL & CHEMICAL COMPANY13,9101985-06-07
3043AMERICAN PETROFINA CO. OF TEX.13,9151985-06-07
3044AMERICAN PETROFINA CO. OF TEX.13,8751985-06-07
1010AMERICAN PETROFINA CO. OF TEX.14,1001985-02-12
3041AMERICAN PETROFINA CO. OF TEX.14,1001985-02-12
3042AMERICAN PETROFINA CO. OF TEX.14,1001985-02-12
3040AMERICAN PETROFINA CO. OF TEX.13,9501984-10-23
108AMERICAN PETROFINA CO. OF TEX.13,9101984-04-30
10342-485-88159--------
10442-485-88160--------
20142-485-88161--------
20342-485-88163--------
301142-009-84437--------
301242-485-88168--------
301342-485-88169--------
301542-485-88171--------
301642-485-88172--------
30242-485-88165--------
302042-485-88173--------
303042-485-88175--------
303442-485-88176--------
303842-485-31534--------
30442-485-88166--------
EOF // data source: Texas Railroad Commission // 2026