... fracture height gradient reservoir hydraulic fracturing poisson ratio fracture length sand pressure drop equation secondary sand proppant migration model fracturing fluid permeability minimum principal stress concentration cap rock equation fracture propagation model application...

... procedure iteration application objective function history matching optimization technique steepest descent artificial intelligence reservoir simulation history simplex method algorithm optimization method gradient history data upstream oil & gas porosity reservoir model...

... to compute the pressure at the bottom of the annular gas column using the gas properties and the geothermal temperature profile. Then the pressure at the depth of the pump intake is computed using the gradient of the annular fluid below the gas/liquid interface. The Pump Intake Pressure (PIP) determined...

... Abstract One of the advantages of Managed Pressure Drilling (MPD) is to determine formation pressures and fracture gradients while drilling. However, in order to determine these pressures accurately, the rheological model of the drilling fluid and pressure losses accruing in annulus should...

... Abstract Compositional and fluid property gradients are common and documented in conventional heavy oilfields and in super heavy oil occurrences such as oil sand reservoirs. In the severely biodegraded oils of both Athabasca and Peace River oil sand reservoirs, highly non-linear vertical...

... permeability flow in porous media gas saturation gradient relative permeability average pressure differential pressure gas relative permeability system 1 upstream oil & gas experiment depletion experiment solution gas drive system 3 enhanced recovery pressure gradient...

... of the reservoir the gradient in the flow potential of the densest mobile phase is zero. It is generally not for the other phases. To restrict the flow of the other phases, their saturations must be at or below their residual or interstitial saturations. When water is injected into a reservoir originally...

..., the APL gradient is usually high, translating to a high equivalent circulating density which can lead to fracturing the formation and lost circulation. Some work has been done to improve drilling fluid rheology for slim-hole drilling, but there is much room for improvements. This study contributes...

... enhanced recovery tar sand reservoir geochemistry viscosity composition gradient compositional gradient modeling & simulation reservoir simulation porosity fluid property reservoir reservoir characterization permeability saturation biodegradation heterogeneity viscosity...

... steam injection injection thermal method instability sequence pressure gradient gradient dilation sagd fracture permeability mechanism viscous oil upstream oil & gas injection phase vapex viscosity reservoir steam-assisted gravity drainage communication enhanced recovery...

... gradient gas well flow rate fluid level measurement production monitoring traverse liquid average gradient wellbore production control gaseous liquid column gas liquid interface drillstem/well testing pressure gradient liquid column bottom hole pressure compute acoustic velocity...

... data of three times, this paper analyzes well testing characteristics of the reservoir. 1) Through comparison between observation results of flowing pressure & temperature gradients and lab analysis, it could be seen that phase behavior of flowing CO2 column has obvious difference with that of static...

... coalbed methane coal bed methane coal seam gas coal zone fracture geometry radioactive tracer log symposium fracture post fracture analysis fracture design fracture treatment hydraulic fracturing net pressure permeability fracture gradient gradient upstream oil & gas...

... uncertainties on recovery factors). If matching work on long core depletion experiments is satisfactory in terms of oil and gas productions, it fails to predict the gas saturation gradients. In this context, it has been stated that it was necessary to develop new tools in order to: Test efficiently new...

... management study determination centrifuge method lab data reservoir relative permeability flow in porous media enhanced recovery unsteady state connate water porous medium gradient correlation method oil and gas fluid dynamics 1 PAPER 2004-114 Wisely Apply Relative Permeability Data...

... of the Cretaceous section. Data set 2, used for mapping SHmin at the tops of the Banff Formation and Wabamun Group, included only measurements made in Paleozoic rocks. For each data set, the following culling procedures were applied. Micro-fracture and mini-fracture tests with SHmin/depth gradients less than 12 kPa...

... injection enhanced recovery thermal method experiment volumetric ratio steam-assisted gravity drainage steam chamber co 2 oil recovery steam co 2 steam co2 1 sagd interface carbon dioxide upstream oil & gas sagd experiment gradient reservoir viscosity non-condensable gas...

... with results to be discussed. reservoir model dynamic data optimization problem geological modeling gradient inverse problem optimization algorithm algorithm permeability map procedure artificial intelligence geologic modeling upstream oil & gas reservoir characterization construction...

... concentration profiles due to mechanisms in which the flux is proportional to the concentration gradient. Diffusion is a special case of dispersion when the velocity of the fluid is zero. The diffusion process was first recognized by Fick. Perkins and Johnston 1 suggested that dispersion in porous media...

.... Experimental data from several wells located in Lake Maracaibo were used for tune the model. LITERATURE REVIEW Several multiphase flow models have been developed to predict pressure gradients in different problems found in the oil industry. In almost all-vertical wells, gas flows along the producing liquid...