Integration of Static and Dynamic Data to Investigate Interwell Communication - The Case of Module II of Espadarte Field, Campos Basin, Brazil (SPE-131569)

摘要

This paper describes the investigation of interwell communication in the Module II of Espadarte Field, located in the Campos Basin, offshore Brazil. The field started production in January, 2007, six months before water injection. All active wells are equipped with permanent downhole gauges (PDG) to continuously record flowing pressure and temperature. As production history became available, PDG bottom-hole pressure was extensively analyzed to infer reservoir properties, estimate its pressure and determine well parameters. A routine of injector fall-off tests was implemented. The results obtained were combined with producer pressure buildup interpretations during platform shutdowns. Additionally, in order to evaluate their level of connectivity, the reflect of topside events affecting the injectors was also investigated on the flowing pressure of the producers. A material balance model with interference was developed to represent and evaluate the degree of compartmentalization suggested by bottom-hole pressure interpretation. The results were confronted with different seismic attribute maps to identify features influencing the underground flow behavior. All this information together made possible the identification of regions with poor and good communication between injectors and producers. Conclusions have given support to the definition of injection rates. This work also highlights the importance of integration of static and dynamic data, represented by PDG measurements and seismic attributes, to the monitoring of well and reservoir performance.