... in the Marlim Revitalization project, considering the challenges associated with the presence of an extensive section of shales followed by a sandstone reservoir, as well as the specificities of the producing and injecting wells. The proposed technical solution aimed at enabling the construction of TOT-3P...

... and shear) and bulk density of the porous frame are estimated. Shale anisotropy, which has effect on wellbore stability analysis especially in highly deviated and shale-rich wells is corrected for in the process. The in-situ static relationship for dynamic-to-static elastic moduli transform is provided...

... perimeter where they terminate against the salt faces. In Basin A, the tightness of the shales precludes such pressure drainage, thus exhibiting a relatively high build-rate of pressure with depth along a given event. Abstract Enhanced seismic velocity models (e.g. semblance or tomography) are key...

... location can point to the possible pressure transgressive intervals that can cause a sudden pressure surge (PS). Moreover, modifying the drilling tolerance window (DTW) to accommodate the expected hydrocarbon column in the prospective reservoirs reduces the potential of unexpected hard kicks at the shale...

... trends such as velocity, density, resistivity follows a compaction trend in this zone. As result of depositing shale seal in zone C, due to high stand sea level, fluid is prevented from permeating upward. This low permeable top seal is referred to as top of geopressure (TOG). The geopressured section...

... waterflooding channel sand reservoir fracture length enhanced recovery modeling & simulation stress contrast hydraulic fracturing height growth drillstem/well testing fracture propagation shale bhp reservoir injection rate upstream oil & gas fracture growth reservoir pressurization...

... with potential greater uncertainty. The present study uses well data and post-stack seismic amplitudes to estimate volumes of porosity and saturation for gas and oil sands. An advantage associated with the data set used here is that P-impedance discriminates sands and shale. Gas and oil sands, however, overlap...

... and therefore overlooked. The resistivity suppression is caused by a lack of conventional tool resolution and the presence of conductive shale lamina. This paper will describe advanced techniques for effective evaluation of the low-resistivity laminated shaly sand sequences. To accurately identify and quantify...

...OTC-26902-MS Functionalized Nanosilicas as Shale Inhibitors in Water-Based Drilling Fluids Peter J. Boul, B. R. Reddy, Matt Hillfiger, T. Pete O Connell, and Carl Thaemlitz, ARAMCO Copyright 2016, Offshore Technology Conference This paper was prepared for presentation at the Offshore Technology...

... effects. The resulting inversion outputs, acoustic and shear impedance, were used to derive shale and sand probability volumes. Well based analysis was used to determine the best relationship between acoustic and shear impedance and Young's Modulus for both sand and shale facies. Using the facies...

... correlation well logging real time system shale drilling parameter annular pressure drilling estimation eaton pore pressure artificial intelligence pore pressure estimation method offshore technology conference reservoir geomechanics pore pressure gradient upstream oil & gas...

... to RFT measurements. It is a siliciclastic section that mainly consists of poorly- consolidated sandstone, siltstone and clay in its upper part, and consolidated sandstone, siltstone and shale in its lower part. The density of the sediments varies from 2.0 to 2.4 sg, being smaller at the top and larger...

... aquifer overpressure value reservoir characterization laterally hydrodynamic system pressure regression shale offshore technology conference upstream oil & gas structural geology lateral drainage gradient swarbrick variation north sea hydrodynamic flow hydrodynamic aquifer...

... Abstract Eaton's method, the standard method of determining pore pressure from seismic velocities, has been adapted from logging techniques. It requires the use of a normal (i.e. hydrostatic) compaction trend specific to very-low-silt shales, and also that the analysis only be performed upon...

... observed breakouts. Pore pressure and stresses were combined with formation properties from well logs and laboratory rock mechanics tests to provide input for elasto-plastic (shales) and poro-elastic (sands) borehole stability models. These techniques are applicable to exploration, appraisal, or early...

... Abstract Currently, the industry relies on shale velocity and electrical resistivity trends to model compaction and pore pressure. These methods do not properly identify the interrelated shale compaction properties, important to geoscientists, as well as drillers, of porosity, pore pressure...

... extensive and vertically thick marine shales overly these potential reservoir intervals and provide an appropriate seal across the region. This petrophysical analysis was integrated with interpretations from available two dimensional seismic lines to investigate the spatial potential of the targeted...

... straight from the casing shoe at the heel of the horizontal to the planned toe of the well with no active geosteering intended. This was based on the results from the vertical exploration and appraisal wells showing massive sands with limited interbedded shale. The drilling assembly was planned as a push...

... manage hazards, one of which is what can be referred to as listening to the well (Weatherford 2008). Listening to the well is simply recognizing, integrating, and correctly interpreting all drilling dynamics, WOB, RPM, ECD, and shale shaker cuttings, to assist in making the correct decision while...

... OTC 20272 Potential for Oil Shale Development in the United States Khosrow Biglarbigi, INTEK Inc., James Killen, U.S. Department of Energy, Hitesh Mohan and Marshall Carolus, INTEK Inc. Copyright 2009, Offshore Technology Conference This paper was prepared for presentation at the 2009 Offshore...