... In this study, a comparative analysis was conducted using the coefficient of determination and mean square error as the evaluation metrics. Models with low R 2 and high MSE values were discarded, and the model with the highest R 2 and lowest MSE values was chosen to predict porosity and bulk...

... the same physical dimensions. In the workflow we have developed, we generate three fractal volumes and normalise each of them to produce 3-D fractal maps of porosity, grain size and cementation exponent. Examples of these can be seen in Figure 3 . The 3D fractal maps can then be used to calculate...

... will be producing in spite of their nano to milli Darcy range permeability. Abstract Understanding the porosity of gas shale is of great importance in many applications such as for enhanced recovery in gas reservoir. The first step for understanding the above properties is the precise quantification...

... using x-ray diffraction analysis on core data if available. The presence of clay within a reservoir rock can cause multiple issues including: Log responses are affected Reduction in porosity and permeability Reservoir production rates Migration of fines Calculated water saturations can...

... porosity fluid property machine learning bitumen reserves evaluation empirical equation secondary recovery factor Artificial Intelligence Upstream Oil & Gas target reservoir database estimation cluster analysis permeability injection equation volumetric method principal component...

... well logging service provide unique petrophysical measurement upstream oil & gas spe 144890 real time system libya gamma ray formation evaluation ultrasonic caliper neutron porosity interpretation evaluation spectroscopy log analysis offshore environment porosity drilling...

... that rely on fluid composition. Determination of fluid equilibrium should become part of the standard procedure for reservoir connectivity evaluation. equation of state exhibition connectivity reservoir fluid pseudo component porosity equilibration gradient equilibration time upstream oil...

... history matching, and the estimation of reservoir properties using this method is known as parameter estimation and it is an inversion process. Here we apply one of the evolutionary algorithms (Particle Swarm Optimization – PSO) to estimate porosity and permeability using both production and 4D seismic...

... Abstract Formation characteristics are predicted using an advanced computational mathematical method and using hydrocarbon-gas and drilling data as input. Robust predictions of porosity and saturation are made in vertical and horizontal wells, in clastic and carbonate reservoirs. The potential...

... from this paper can be summarized into the following: The top of the reservoir cannot be accurately determined from amplitude seismic, but is resolved by the VP/VS ratio derived from optimized elastic inversion regardless of variations in reservoir porosity and/or fluid content...

... velocity data. velocity data porosity uplift basin Reservoir Characterization Slyne basin unconformity walford Upstream Oil & Gas variation velocity profile velocity field inversion seismic velocity Porcupine Basin interpretation exhumation estimate Ireland erosion geological...

... reservoir horizontal well flow in porous media liner lateral spe 123979 erosional depression permeability porosity perforation length spiralling dual lateral horizontal well fluid dynamics thin low permeability gas field hba-19ml accumulation Halfdan Northeast Location and Reservoir Geology...

... Abstract It is well-known that CSEM data are sensitive to the presence of hydrocarbons, but the diffusive energy propagation results in low resolution images. Seismic data are much better suited to resolving structure and some rock properties, notably porosity, but attempts to map fluids from...

.... chemical flooding methods enhanced recovery Upstream Oil & Gas Simulation Saline Aquifer solubility aquifer solid saturation injection permeability injection well saturation mutual solubility precipitation co 2 salinity geological environment injectivity Brine porosity reservoir...

... strength depositional environment Reservoir Characterization prediction study Exhibition sandstone qualitative reservoir data horizontal stress fluid flow rock mass rock strength determination well logging sand production porosity formation strength texture Fault Zone fracture in-situ...

... porosity compaction saturation acoustic impedance chalk reservoir seismic observation Reservoir Characterization seismic data contribution injection fracture reservoir water injection spe 108531 waterflooding quantitative analysis injection water flooding petroleum engineer relative...

... techniques and the consequences to borehole stability addressed. An example of principal stress rotation gleaned from a deepwater MEM and the consequences to borehole stability is summarized in this paper. Upstream Oil & Gas porosity reservoir geomechanics shear wave travel time orientation...

... of a tilted fault block of Lower Cretaceous limestone of the Montsia Formation. Well data indicates the limestone is intensely karstified, creating a complex and chaotic distribution of porosity within the structure. Schlumberger provided an advanced logging suite and data interpretation services...

... and claystone examples is calculated as a function of porosity, CO 2 saturation, and CO 2 -filled reservoir thickness. The dynamic temperature signal associated with the movement of CO 2 in the well and the porous rock is discussed and results of numerical simulations are presented. The detectability...

..., porosity and lithology) to predict the geopressure environment that will be encountered by the well. As the well is drilled, new information becomes available that will either confirm or refute the original geopressure prediction. This new data is well-specific and can be used to update the basin model...