... effect on the marine intervals (e.g., the wave-dominated delta front). CO 2 injectivity is predicted to be best in the non-marine intervals (i.e., fluvial facies), but trapping is likely to be modest. Better trapping but reduced injectivity is expected to occur in the marine intervals. 7 5 2024...

... to the well-log scale. The vertical ( K v ) and horizontal ( K h ) permeability logs are evaluated by facies and compared to RCAL data from plugs and whole core samples. We hypothesize the existence of distinct hydraulic flow units for different directions in the upscaling methodology. The lack of laboratory...

... the coring borehole. Full core samples were acquired from the coring boreholes, and various core analyses were conducted manually with significant time and effort to create a detailed core description. Identification of geological facies is crucial to understanding the complicated crust-mantle transition...

... reservoir drillstem/well testing qixia formation rock type artificial intelligence hydraulic fracturing reservoir characterization fluid dynamics structural geology sedimentology sedimentary geology sedimentary rock carbonate rock drillstem testing sichuan basin facies porosity geological...

..., granitic rocks account for ~57% of the basement in terms of lithology, which provides an excellent opportunity to investigate the characteristics and distribution of basement granitic reservoirs. Here we report results from a log facies analysis of the basement granitic rocks in the PRMB based...

... exposure surfaces. Stratiform breccia intervals and pseudomorphs after nodular anhydrite indicate the former presence of platform-top evaporites. Reef structures within the Ørn Formation have been drilled in Well 7220/11-3 and Sidetrack 7220/11-3 AR. Facies encountered in core are very similar...

... and fluid concentrations. In this paper, a data-driven approach is developed to classify vuggy facies based on core and well logs from a key well penetrating the Arbuckle formation in Kansas. Three supervised machine-learning methods, namely artificial neural networks (ANN), support vector machines (SVM...

... and the uncertainties related to the mud-filtrate parameters, the invasion zone is jointly inverted with the vertical capillary equilibrium at field-scale describing the vertical water saturation profile in the reservoir for each facies. The following workflow is then used: First, the invasion is solved in the water...

... of various log measurements to arrive at the correct petrophysical solution. A review of rock physics literature is presented to highlight the underlying reasons for log behavior in silty facies. Generally, laminated rocks are evaluated from two different approaches: high-resolution, or bulk rock volume...

... distribution and state is not only desired but required for predicting reservoir performance, estimating realistic recoverable volumes, and optimizing costs for development and production. The Almond Formation is characterized by three depositional facies associations: shoreface, deltaic and fluvial-coastal...

... & Well Log Analysts log analysis well logging exponent borehole image log presalt carbonate evaluation Brazil permeability vuggy porosity porosity Rio de Janeiro University stromatolite Santos basin december 2015 petrophysics december 2015 Upstream Oil & Gas facies image log...

... reservoirs may be expressed in the near-wellbore region. A simple approach restricted to porosity log interpretation accurately characterizes the reservoir facies but misses detection of "high-flow zones" that represent thin (typically 10 to 30 cm) zones of high porosity (up to 100%) and potentially 100s...

... and distributing permeability in a facies model is important to account for the full heterogeneity of the formation. Direct measurements of reservoir permeability are usually obtained from core-plug samples; however, this data can be problematic because it may not represent the true permeability distribution...

... Fluid Dynamics pulse-decay permeability wolfcamp rock SEM image pore size Upstream Oil & Gas facies relaxation saturation petrophysics february 2015 flow in porous media petrophysical characterization permian wolfcamp rock correction core sample permeability February 2015...

... precise information about mineralogy, lithology, reservoir quality, and even depositional facies. These techniques are a valuable aid to selection of the mineral assemblage that will be used to perform petrophysical interpretations of logs. Although the data and examples presented in the paper are unique...

...D. Rose; P.M. Hansen; M.J. Raven ABSTRACT Detection of facies changes along horizontal wells in a Middle East carbonate reservoir, known to comprise several different facies, is not always possible with conventional LWD logs because the different facies have similar porosity responses. Drill-pipe...

... for Tengiz is based on simple "gross" facies defined by the main depositional areas of the field. New rock types have been defined by using Mercury Injection Capillary Pressure (MICP) measurements from 23 wells in conjunction with depositional facies and stratigraphy. This paper describes the integrated...

... borehole image and conventional log processing with calibration to core data. This approach has allowed the quantification of porosity and permeability heterogeneity in vuggy carbonate facies in the field. For example, in different vuggy zones of the San Andres Formation, with similar total porosity values...

... performed under isotropic conditions on carbonate rocks from different reservoir facies and for various oil and brine saturations. This experimental work shows that water-weakening not only affects chalk but also widely affects shallow-water carbonates with preserved or enhanced porosity. In addition...

... the dynamic properties of the reservoir. This paper investigates the integration of electrical borehole images (EBI) with other conventional logs for reservoir facies and permeability modeling in carbonate reservoirs. Due to its high resolution, electrical borehole imaging can provide important information...