Applications of a commercial numerical reservoir simulator1  to several large tight-sand compartmented gas reservoirs are illustrated. The applications include connecting well-pipelines networks with intermediate gathering and compression stations connected to gas transmission line nodes. The study was focused on a large gas fields-complex, which has 550 wells producing from 840 completions, and a surface gathering network with more that 1300 kilometers of pipelines. The applications of integrated reservoir-surface network simulation were oriented to support the field production strategy by designing long term forecasting and modification and/or allocation of additional surface facilities.

The results showed that an advantage of this integrated reservoir-network modeling is that it takes into account the effect of several reservoirs sharing a surface network on the field and wells deliverability. Conventional reservoir simulation generally ignores these effects. Integrated simulation offered useful insights in planning and support of the reservoir management in developing tight gas reservoirs in the North of Mexico.

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