MARSTON, EDGAR J. JR. TRUST.-B-

Oil // district 10 // lease#25355

op: WATERBRIDGE TEXAS OPERATING LLC

fields: RHODA WALKER (CANYON 5900)

cum_oil

21k BBL

cum_gas

0 MCF

wells

2

production

1993-01 — 2026-03

peak_month

1999-10

-- production_history

cum_oil: 21,110 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

260 BBL/mo

Di (annual)

35.7%

b-factor

0.0

EUR

8,688 BBL

R-squared

0.619

type

exponential

-- wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-475-32737	EXXON CORP.	1	6,700	1982-11-15
1	42-475-31820	EXXON CORP.	1	6,750	1979-02-01