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Gas field development involves the optimal selection of well number , well placement , well tubing size , and pipeline characteristics to deliver a specified contract rate (DCQ - daily contract quota) and specified contractual (plateau) period.

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  1. Gas field development involves the optimal selection of well number, well placement, well tubing size, and pipeline characteristics to deliver a specified contract rate (DCQ - daily contract quota) and specified contractual (plateau) period. • The engineering tools required are (a) reservoir material balance(s); (b) well rate equations for reservoir and tubing; and (c) pipeline rate equations. Reservoir simulation is often not necessary, but may be convenient. • Data acquisition is needed early to estimate key parameters in the calculations mentioned in (2). These include core data, log interpretation, geologic mapping, and well testing. • Field gas rate ‘swing’ considerations may be important, accounting for a seasonal variation in production rate demand (maximum in winter). • Compression design may be important during the contractual period, but almost certainly during the decline period of production. • Uncertainty analysis should focus on the parameters which are known to be important and known to be uncertain (IGIP, kh, skin, aquifer strength).

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