I. If 1 scf of natural gas generates 1000 Btu of heat, what is the heating value

Question

I. If 1 scf of natural gas generates 1000 Btu of heat, what is the heating value of 900 MMscf of the gas in dekathems? l dekatherm = 1,000,000 Btu O A. 900 B. 9,000 O C. 90,000 0 D. 900.000 0 E. 9,000,000 The table below shows inventory of a natural gas underground storage in billion cubic feet (MMc Total Gas in Working Gas As of April 30, 2006 5,400 As of October 31, 2006 The storage capacity is 9,000 MMcfand the base gas size is 50% of its capacity. From May 1, 2006 to Octob 31, 2006, gas was injected into the storage at a rate of 14 MMofid and withdrawn at a rate of 3 MMcfd 2. What is the value of A (MMc)? O A. 900 O B. 2024 O C. 2924 OD.3,376 OE. 7,424 3. What is the value of B (MMcf? O A. 900 O B. 2024 O C. 2924 D. 3.376 O E, 7,424 4. What is the value of C (MMc)? O A. 900 O B. 2024 ° C. 2924 O D. 3.376 O E. 7,424 5. A natural gas has a pseudoreduced pressure of 2 and pscudoreduced temperature of 1.45. Use the chart to determine the gas compressibility factor? OA. 0.74 ? B. 0.80 alC. 90 OD. 1.0 ? E.1.7 A gas well produces 0.697 specific gravity natural gas containing 53% nitrogen. 1% carbon dioxide, and 3% hydrogen sulfide. The average reservoir pressure is S,200 psia. Reservoir temperature is 185 F. The well was rested at two flow points: Test point I: Flow rate: 3,491 Mscfd; Bottom hole pressure: 2,000 psia Test point 2: Flow rate: 4,126 Mscfid: Bottom hole pressure: 860 psia 6. What is the gas viscosity at 900 psi and 100 F? O A. 0006301 cp ? B. 0012966 cp O C. 0013867 cp O D. 0016949 ep 7. What is the gas compressibility factor at 900 psi and 100 F O A. 0.8706 O B. 0.8890 ? ?. ? 9021 O D 0.9623 ? E. 09715 Run spreadsheet program Empirical IPR Template using the backpressure model with pressure squared approach and answer the next two questions

Explanation / Answer

1. Heating value of 1 scf = 1000 Btu

Heating value of 900 MMscf -= 900,000,000 * 1000 Btu = 900000 dekatherm

Answer is D

2. Total no. of days = 184

Net gas injected = 11 MMscf.

Answer is C

3. D

4. B

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