... variation in pore pressure threatened the commercial success of the project. This paper elaborates how geomechanical information along with BHA design and chemicals was integrated into the decision-making process during well design and drilling operations to avoid wellbore instability issues. Wellbore...

... damage in gas wells. This improved understanding will ultimately enhance the application of core flooding as a tool for identifying formation damage in gas wells. production monitoring Fluid Dynamics co 2 Reservoir Surveillance pore pressure formation damage flow in porous media Brine...

... overburden MPa pore pressure well deformation boundary shear strength elastic length deformation Introduction Abstract There are a lot of reports of formation induced damage of wells world-wide. Despite extensive literature on the subject, formation induced damage is not a standardized part...

.... Stresses in the MEM were initialized from wellbore stress estimates and reservoir simulation pore pressures. One way and two way coupled simulations were performed using a compositional hydrodynamic flow model and geomechanical solvers. Coupled simulations were performed on history matched primary...

... With regard to the application of unsaturated poroelastic theory to civil engineering, we notice that the average pore pressure p * is defined as the sum of product of Bishop's parameter χ and phase pressures to simulate the coupling of multiphase flow and deformation of a porous medium...

... temperature pore pressure thermally-induced secondary fracture development clay pore equation pore balance equation shale formation water invasion membrane efficiency concentration coefficient Introduction Hydraulic fracturing water invasion has long been recognized as a formation damage...

... The components of the pore pressure system such as valves, tubing and Swagelok fittings are rated to 5,000-10,000 psig. These components hold an additional but small volume for the gas storage. Estimation of this dead volume ( V d ) is important for the accuracy in our measurements especially...

... Reservoir Characterization data quality Wellbore Design wellbore integrity pore pressure orientation strength reservoir geomechanics Upstream Oil & Gas wellbore stability model incident fracture image log horizontal section mud weight window Drilling anisotropy Bowland Shale...

... with impermeable clastics. Stress determination has been a key challenge as initial minifrac interpretations showed significant scatter in stress and pore pressure results. But with more consistent processing and interpretation constant effective stress ratios could be defined over large areas and depth sections...

... initially in ideally triaxial conditions where Normal Stress regime was taking place. At late times of injection, the initial stress regime has been totally reversed (RF). Pore pressure increase causes pore extraction and tensile stress while the temperature (T) decrease create tensile load and thermal...

... permeability. In this study, series of experiments were designed and performed on three shale samples to study the simultaneous effects of slippage and stress at five different pore pressures and four net stresses. The experimental data were used to obtain a general slip plot, which quantifies the effect...

... mathematical modelling as performed for the field conditions shows that the proposed method yields around 6-times increase in productivity index. coal bed methane coalbed methane coal seam gas flow in porous media complex reservoir concentration particle graded proppant injection pore pressure...

... of increase in pore pressure on the generation of micro-fractures are discussed. The simulation results show excellent agreement with the previous experimental observations, and indicate that the water leak-off greatly depends on composition of shale matrix and concentration of different components...

... multifunctional biopolymer simplifies cement slurry design and operations contributing to higher quality cement jobs. cement property drilling fluids and materials upstream oil & gas drilling fluid selection and formulation drilling fluid formulation pore pressure drilling fluid chemistry...

..., pore pressure and effective stresses around a borehole. These data sets can be used as input to borehole stability analysis. From the results of this study it was revealed that the effect of plasticity on stress relaxation around the wellbore is a major concern during underbalanced drilling...

... results of low borehole pressure during inflow to the wellbore. At the wellbore wall the pore pressure is equal to the wellbore pressure, a penetrating situation. (4) σ 3 ' = P W − P o = 0 Equation 3 will for this condition reduce to: (5) σ 1 ' = 2 τ o...

... hydrates in the formation behind the casing. Water and gas resulted from gas hydrate dissociation cannot flow away if the permeability of the formation is very low causing high pore pressure to trap behind the casing. The trapped pore pressure in combination with the casing eccentricity may endanger...

... model to account for strain rate dependent reservoir compaction during depletion, re-pressurisation and waterflooding. The constitutive deformation model is driven by pore pressure and watersaturation calculated in a reservoir flow model and imported into the geomechanics model. It will be described...

... the proposed method and the discrete fracture method (DFM) shows its ability to adequately determine the displacement and fluid pore pressure distribution within a fractured domain. flow in porous media artificial intelligence numerical method matrix international journal equation fracture...

... of a hydrocarbon reservoir can ideally be predicted by estimating the effective stress acting on it. The effective stress is the difference between the total stress and a fraction (effective stress coefficient) of pore pressure. The effective stress coefficient is thus relevant for studying reservoir deformation...