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Chapter 18. Geologic Modeling and Reserv... > Sources of Data for Geologic Modelin...

18.2. Sources of Data for Geologic Modeling and Reservoir Characterization

There are many sources of data for geologic modeling and reservoir characterization. These depend on the stages of exploration, appraisal, and development of the reservoir. At the exploration stage, data sources are limited to seismic, analogue reservoirs, and outcrops. In the appraisal stage, data sources expand to include cores, logs, fluids, and other subsurface data acquired from wells drilled into the reservoir. During the development stage, additional data may be available from fluid production tests, and other tests designed to assess the extent and productive potential of the reservoir. These sources of data should be integrated at each stage to construct and characterize reservoir models that are based on all available data. A brief description of the various sources of data for geologic modeling and reservoir characterization is presented in this section. This list is not considered to be complete and exhaustive. It is provided as a guide to some of the data that are generally used for geologic modeling and reservoir characterization. Advancements in the technology for data acquisition from reservoirs and transformation of these data into quantities that are useful for geologic modeling and reservoir characterization are making significant progress in the industry. It is expected that the list of data sources presented in this book will continue to grow as more data sources become available in the future.

18.2.1. Seismic Data

One of the important sources of data for geologic modeling and reservoir characterization is seismic data. Seismic data can be used in geologic modeling to map the structure and stratigraphy of the reservoir, as well as designate the locations of faults, if any are present. The applications of seismic data in geologic modeling are especially important in deepwater reservoirs, where due to few well penetrations, seismic data are used almost exclusively in the construction of the geologic models.1 Another important use of seismic data is in reservoir characterization. Seismic impedance data obtained from seismic inversion processes are widely used in reservoir characterization.2,3 The seismic inversion data are typically integrated with well log and other petrophysical data to improve reservoir characterization.


  

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