中国矿业大学主页平台系统 chenyuhua--Home-- A Model for Evaluating dynamical process the Interlayer Interference of Tight Gas and Coalbed Methane and Its Application

Abstract:
Evaluating dynamical process of the interlayer interference of reservoirs with various properties is significant for coproduction of tight gas and coalbed methane. However this issue has not received enough attention. From the productivity equation of tight gas and that of coalbed methane, a dynamical coefficient of the interlayer interference was derived for evaluating the intensity of the interlayer interference and it's tendency was analyzed with four key parameters. Then a theoretical model was created to evaluate dynamical process of the interlayer interference of tight gas and coalbed methane. After that, application steps of the created model were summarized for production layer selection and evaluating the dynamical process of interlayer interference in the realistic coproduction. For testifying the model, Well M-1 in the Qinshui basin were selected to obtain appropriate coproduction scheme of tight gas and coalbed methane and to evaluate the dynamical process of the interlayer interference. Finally, detailed analysis of drainage performance of Well M-1 indicated that the model could be applied in analyzing the actual performance of exploration.
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