..., and the permeability increases by 2 orders of magnitude at most. The physical simulation revealed that the stepped-shape pore pressure preprocessing, low temperature, and cyclic oscillation with 0.5 min have a positive impact on the dilation effects. The numerical simulation of the old well showed a good fitting...

... Geomechanical models are built by integrating the data from drilling, geology, geophysics, petrophysics and reservoir engineering disciplines. Vertical stress is estimated by integration of density log from surface to reservoir TD. Pore pressure is constrained using Normal Compaction Trend (NCT) techniques...

... Abstract Exploration onshore Niger Delta is moving into deeper HP/HT plays where pore pressure prediction is challenging due to secondary overpressure mechanisms and lack of data for calibration. Accurate pore pressure prediction is required to ensure safe and economic drilling campaign...

... Abstract Managed Pressure Drilling (MPD) and Managed Pressure Cementing (MPC) were successfully used in several recent applications to drill and perform cement jobs within a narrow pore pressure and fracture gradient window. This paper presents a recent successful case to highlight...

... run and thus is very efficient. Permeability as a function of pore pressure at a given confining stress is measured with ANP for several Eagle Ford rock samples without fractures. The permeability curve shows complex behavior: permeability initially decreases with increasing pore pressure...

... 30 simulations were done, and most input parameters were systematically varied to gain insight in their effect on result that was of most interest to us: The tendency of fault slip as a function of our operation-induced variations in pore pressure in the reservoir rocks bounding the fault, both...

... underbalanced drilling drilling operation annular pressure drilling managed pressure drilling upstream oil & gas h2s management corrosion management well-x mpd deliver unprecedented drilling performance pore pressure field-x hydrostatic head yz-limestone formation lost circulation foam system...

... the Pore Pressure at section TD. In Managed Pressure Drilling (MPD) there is often a range of mud weight solutions that can be used to drill the section, but usually one optimum mud weight that should be used, based on different risk criteria that can be evaluated. The consequences of this are that when...

... on a candidate well. By applying managed pressure drilling techniques the operator expected to drill the section with an underbalanced mud weight and maneuver the bottom hole pressure just above the pore pressure line and thereby avoid circulation losses, detect influxes early on and control influxes without...

... in reservoir and 4 wells in overburden: 1972-1996 Gas while drilling data from mudlogs Field A 2 wells with qualified data A-101(2000), A-102(2000) Field B & C 7 wells with qualified data B-3(1992); B-110(2001); C-1(1992); C-2(1992); C-102(2003); C-107(2003); C-110(2004) Pore pressure data...

... changes. The compressional P-wave first arrival time is monitored during changes in confining stress and pore pressure and is used to obtain the effective stress coefficient (ESC). In theory, the effective stress coefficient is calculated based on accurate grain and bulk modulus measurements...

... drilling operation annular pressure drilling managed pressure drilling Upstream Oil & Gas circulation bottom hole pressure pore pressure hydraulic modeling flow rate control system surge different flow rate density profile surface pressure estimation international petroleum technology...

... and materials cement chemistry drilling fluid formulation casing and cementing Upstream Oil & Gas compressibility Norwegian Water pore pressure concentration riserless drilling fluid return system nitrogen nishikawa operation cement slurry operator slurry international petroleum technology...

... Upstream Oil & Gas pore pressure worldwide implementation total loss hole section translate mud cap migration operation Implementation pressurized mud cap drilling rcd pressure bearing assembly PMCD drilling operation international petroleum technology conference injectivity LAM...

... logging while drilling data in real time allowed to identify the formations being drilled using Gamma Ray and resistivity logs anticipating the risk associated with each formation. The accurate identification of the pore pressure ramp, a consequence of using real-time MWD GR logging to correlate incoming...

... Formation pressure heterogeneity in a reservoir can represent a significant challenge when a high overbalance condition is created in a zone with low pore pressure; leading to total losses, and potential stuck pipe events which subsequently increase well costs and non-productive time...

... in the field stimulation of hydraulic fracturing, a ramp-type flux loading boundary condition at the borehole wall is adopted, and the stresses and fluid pore pressure at the wellbore wall and in the formation are calculated. Numerical analyses carried out for the most common wellbore setting in fracturing...

... boreholes is key to minimizing and/or avoiding liner deformation in deep gas wells. Reservoir Characterization reservoir geomechanics hydraulic fracturing Upstream Oil & Gas strength pore pressure Simulation liner deep gas well integrity circumference stress mechanical integrity...

... geomechanics model in order to predict drilling complex qualitatively. A full field 3D geomechanics model was built through integrating seismic, geological structure, log and core data. The 3D geomechanical model includes 3D anisotropic mechanical properties, 3D pore pressure, and the 3D in-situ stress field...

... and equivalent plastic strain under ideal conditions, e.g., lateral homogeneous formation, constant chamber pressure (equal to formation pore pressure) and blowout preventer (BOP) weight of 20 t. In these cases, the plastic zone only extends to limited area from the sidewall. Additional complexities were...