Static Rose Run reservoir pressure was 9.3 MPa, and fracture gradient under injection was 13.6 MPa/km, suggesting step-rate testing before CO 2 injection, and subsequent pressure monitoring to ensure confinement. A step-rate test was conducted in a mechanically-isolated 18.6-m interval bracketing the Rose Run. Triaxial compressive strength measured in core plugs found the Rose Run and Beekmantown fractured at mean axial stresses of 156.5 MPa and 282.2 MPa, respectively, confirming the Beekmantown as suitable for confining CO 2 injected into the Rose Run. The cutoffs can be determined on rock samples in the lab. In sandstones, the boundary between BVI and BVM is usually chosen at 32 or 33 ms, but in carbonates the cutoff could be much higher (80 to 120 ms) and varies with lithology. Mean Young's modulus and Poisson's ratio values of the Rose Run were 45 GPa and 0.23, respectively, whereas Young's modulus and Poisson's ratio values were 77.1 GPa and 0.28, respectively, in the overlying Beekmantown dolomite, suggesting the Rose Run may fracture if overpressured during CO 2 injection but be confined by the Beekmantown. The T2 cutoff for the boundary between CBW and BVI is often chosen at 3 ms.
The gas saturation cutoff of volcanic lava in this gas field is defined at 40, based on the changing trend and porosity cutoff of 6.5. The Rose Run elastic geomechanical properties were calibrated to values measured in core plugs to evaluate its fracturing risk as a CO 2 storage reservoir. The crossplot of maximum mercury intrusion saturation versus porosity suggests that the initial gas saturation of volcanic reservoirs has a positive correlation with effective porosity. Wellbore fractures in dolomites underlying and overlying the Rose Run follow the contemporary N53☎ Appalachian Basin stress field. Maximum vertical stress gradient calculated in the wellbore was 26 MPa/km. The results showed that overpressure for.
#Rokdoc crossplot cutoff software#
Average porosity and permeability measured in core plugs were 9.1% and 44.6 mD, respectively. software ROKDOC was used to analyze the data set from the composite well logs and comparison with repeat formation tester (RFT) log data was established. In areas of complex geology, especially where fractures are present, commonly used Tilted Transverse Isotropy (TTI) may not be sufficient for describing moveout variations with azimuth. A 9.8-m thick section of the Rose Run was penetrated at 1000 m drilled depth and a whole-diameter core and rotary sidewall cores were taken. Orthorhombic imaging consists of a set of tools that allow azimuthal anisotropy to be incorporated into velocity model building and pre-stack depth migrations. Geomechanical properties of the Rose Run sandstone (upper Ordovician Knox group) were tested for its suitability as a storage reservoir.
Petrel Quantitative Interpretation enables true integration of multidisciplinary seismic with well and geological data.
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