Teapot dome dataset

We test the proposed workflow by using the Teapot Dome seismic and well-log dataset that were made available by the U.S. Department of Energy and RMOTC. Approximately 1300 wells have drilled into the structure targeting nine reservoirs between 300 and 5500 ft MD (Harbert, 2012). The well log dataset contains 900 wells, and we select a subset of 26 wells to test our methods. Also available is a 3D seismic dataset (188 crosslines, 345 inlines, sampled at 0.002s) that is acquired over the selected wells. Figure 1 is a time slice through the 3D seismic volume at 0.72 seconds illustrating the extent of the 3D seismic data and shows the location of each well. From the time slice, we observe the dome structure and several faults that bisect the structure. These structures are obvious in the crossline shown in Figure 2 and will result in different depth tops and thicknesses among rock units between wells. An overview of the dataset is presented by Harbert (2012).

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basemap
Figure 1.
Time slice through seismic data at 0.72 seconds. The stars indicate the location of each well. The purple well is used as the reference well for missing log data interpolation.
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inline3a
Figure 2.
Crossline 126 from available 3D seismic data. The dome structure and several faults that bisect the structure can be observed.
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As discussed later in this paper, not all wells contain sonic and density logs which are required to relate well log data (in depth) to seismic data (in time), making integration of well log and seismic datasets challenging. Additionally, as the number of wells increases, it becomes more challenging to ensure consistency and accuracy between multiple well ties. Our workflow addresses these limitations and provides a method for validating the results.


2019-05-07