* 100% ?. Mon Jul 16 , Q Edit View HistoryBookmarks People Window Help short lin

Question

* 100% ?. Mon Jul 16 , Q Edit View HistoryBookmarks People Window Help short link at × Ch.7 Assigned Problem x g.hecs.edu/Tacultyla oogle A. Work Visa Canada-?internship Opportu-E1 9780750677332.PDF TRT 2323 Assignment 11.pdf-POF document, 7 KB(8109 bytes) A A BOLA-Homepage /-PTRT2323 A 0 (1) The Grind i Unseen : × trt2323/ptrt2323-assignment-11/view EUs Neat-O Stat .. e Natural Gas Comp 1 of 1 + Automatic Zoom PTRT 2323 Assignment 1l The table below shows inventory of a depleted reservoir underground gas storage in billion cubic feet (MM) Total Gas in Working Gas Storage As of October 31.2004 As of April 30,2005 B The total capacity is 8.260 MMcf. Gas is produced from and injected into the well all year round. From November 1,2004 to April 30, 2005 (181 days), gas was injected into the storage at a rate of 4 MMcf/d and withdrawn at a rate of 16 MMcf/d. Calculate A, B, and C. 7457 If 1 scf of natural gas generates 1000 Btu of heat, what is the heating value of the gas in C in dekatherm? 1 dekatherm 1,000,000 Btu 59

Explanation / Answer

Solution:

Working gas is the maximum volume of gas available for withdrawn. Now, the gas is withdrawn and injected into at more-or-less constant rate round the year. From May 1 to October 31, the number of days is 184. So, as of October 31, 2004, the working gas volume is 16*184=2944 MMcf. So, A=2944.

Now, the total gas storage as of April 30, 2005, is 7457-(16*181)+(4*181)=5285 MMcf. So, B-5285.

And the working gas as of April 30, 2005, is 16*181=2896 MMcf. So, C=2896.

Now, 2896 MMcf=2896*106 Scf, which produces 2896*109 Btu heat

Since, 106 Btu=1 dekatherm

Therefore, 2896*109 Btu=2896*103 dekatherm=2896000 dekatherm.

So, the heating value of gas in C is 2896000 dekatherm.

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