Production data and prices for an oil well are given in the table. Also given are CAPEX, OPEX, production tax and depreciation. M stands for 1000.

Year	Gross Oil Production	Produced Gas-Oil Ratio	Oil Price	Gas Price	CAPEX	OPEX	Depreciation
	(MSTB)	(MSCF/STB)	($/STB)	($/MSCF)	($M)	($M)	($M)
2020	-	-	52.0	2.75	1000.0	-	-
2021	5.17	80	51.8	2.70	-	14.4	15.0
2022	2.39	105	51.9	2.65	-	14.5	14.5
2023	1.82	110	52	2.70	-	14.6	14.0
2024	1.21	120	52.1	2.74	-	14.7	13.5
2025	0.97	125	52.0	2.75	-	14.8	13.0
2026	0.70	110	52.4	2.75	45	15.0	14.0

NRI of the operator is 85%. Minimum acceptable rate of return is 10%. The operator uses mid-year accounting system.

1. Working interest =80%+ ((99)/100)%. [1]
2. The economic limit. [2]
3. Determine the likely decline model. [3]
4. The remaining oil reserves as of 1/1/2026. [3]
5. The remaining gas reserves as of 1/1/2026. [3]
6. The remaining BOE reserves as of 1/1/2026. [2] Use a reasonable BOE conversion factor. Justify.
7. Oil production rate at the end of 2030. [3]
8. The remaining life of the well. [3]
9. Ultimate recovery in BOE. [3]
10. Production rate in BOE for the year 2030. [3

can who ever do this show the eqtns used or on excel