--> Abstract: Flow Simulations in the Context of Upscaled Fracture Networks Using Petrel 2007, by Valerie L. Smith, Thomas H. Wilson, and Alan L. Brown; #90078 (2008)

Datapages, Inc.Print this page

Flow Simulations in the Context of Upscaled Fracture Networks Using Petrel 2007

Valerie L. Smith1, Thomas H. Wilson1, and Alan L. Brown2
1Geology and Geography, West Virginia University, Morgantown, WV
2SIS, Schlumberger, Houston, TX

Characterization of fractured reservoirs in areas surrounding core wells and FMI logged boreholes represents a significant challenge. New software tools help to integrate borehole logs with other geophysical data for estimating the properties of fracture networks controlling production in tight naturally fractured reservoirs. The Petrel 3D seismic process referred to as “ant-tracking” helps identify and map the distribution of field scale fracture zones and fault networks within reservoir intervals. In this study, fracture patterns within the Pennsylvanian Tensleep Formation at Teapot Dome, Wyoming, are characterized using FMI logs to define local scale properties of the reservoir fracture network. Production within the Tensleep is controlled by a natural fracture network. The general characteristics of fracturing within the Tensleep are inferred from a set of 5 FMI logs through the Tensleep along with limited core observations. The combination of borehole and seismic scale observations are used to derive a field scale reservoir model for flow simulation. Fracture networks models are adjusted to obtain reservoir models that accurately match reservoir production histories. Model refinements rely on the implementation of an integrated workflow that incorporates iterative adjustments to network properties obtained from the Petrel “ant-tracking” process and borehole observations. Fracture characterization and flow simulation use a combination of tools present in Petrel. These include automated structural and fault interpretation workflows integrated with fracture modeling tools that simulate naturally fractured reservoirs for use in ECLIPSE dual porosity simulations. This analysis will provide better understanding of the nature of flow in naturally fractured reservoirs and help design tertiary CO2 recovery operations as well as increase carbon storage potential.

 

AAPG Search and Discover Article #90078©2008 AAPG Annual Convention, San Antonio, Texas