... pressure information Wellbore Design orientation calculation drilling operation collapse pressure geomechanics geomechanical model well 1 quantitative risk assessment Magnitude prediction operator deviation mud weight hole section mud window principal stress 1. INTRODUCTION Traditional...

... (TSO) fracture geometry. Two-dimensional analysis or even more sophisticated computer simulations typically only model the fracture process up to the onset of TSO, and do not calculate the fracture geometry beyond the onset of TSO. This paper presents results of three-dimensional hydraulic fracturing...

... agreement and demonstrate the potential to predict petrophysical properties from core material not suited for laboratory testing (e.g., sidewall or damaged core and drill cuttings). Pore size information, NMR response and Formation factor are also calculated on the images. Empirical correlations linking...

... ABSTRACT: Based on research and model development, including a new rock strength model that considers the effects of both chemical reactions and capillarity changes, a new pressure model that calculates fluid pressure variations with water saturation, an improved nonlinearity model for rock...

... & Gas pore pressure variation overburden calculation compaction trend reservoir geomechanics shale pore pressure information calibration data shale resistivity data estimation shale pressure threshold shale line pressure estimate Reservoir Characterization normal compaction trend...

... on the elastic properties of the actual reservoir in question. The results show that accurate Biot's coefficient values are not necessarily critical to unconsolidated reservoir types for hydrocarbon reserve recovery calculations. However, the significance of accurate Biot's constant values increases as "harder...

... the influence of stresses on the wedge factor of safety can be ignored. In blocky rock masses experiencing high in situ stresses, however, such analysis can lead to conservative results. This paper discusses the incorporation of stresses calculated from boundary element analysis into the analysis of wedge...

... calculation Reservoir Characterization Upstream Oil & Gas natural gas storage storage cavern fracture mechanism creep cavern wall Simulation stress measure Munson hydraulic fracturing solution mined storage cavern kinetic equation accumulation deformation cavern particle salt fall...

... orientation is more clearly demonstrated. Reservoir Characterization calculation discontinuity jointed rock mass keyblock size orientation keyblock characteristic relative error probability maximum keyblock unit-cell method joint-set orientation rock mass approximation variation...

... vegetation soil density characterization Reservoir Characterization calculation tree species slope stability analysis earth material satellite subset Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 155 4 Application of GIs and remote sensing...

... and subjected to the action of a step tensile pulse applied at opposite dges of the plate. Several finite element discretizations are used to examine the mesh size effect. Comparisons between calculated results based on local and nonlocal formulations are made and nonlocal effects are discussed. 1 INTRODUCTION...

... Reservoir Characterization calculation convergence Upstream Oil & Gas rock salt waste management salt dome borehole investigation rock mechanical activity stability structural geology Germany Disposal subsidence rock mass safety repository uprise radioactive waste...

...Rock Mechantcs, Auberbn, Hassam & M tn (eds) ¸ 1996 Balkema, Rotterdam. ISBN 90 5410 838 X Brine release based on structural calculations ofdamage around an excavation at the Waste Isolation Pilot Plant (WIPP), Darrell E. Munson, A. Lee Jensen & Stephen W. Webb Sandia National Laboratories, (a U.S...

... equations. The incorporation of the inertia ma- trix for both static and dynamic calculations makes the global coefficient matrix well-conditioned. For DDA system, the equilibrium condition, the no-tension, no- penetration constraint conditions, and the Coulomb's friction law are satisfied at all contacts...

... is governed by the local mine stiffness stability criterion. To apply this stability criterion, a boundary-element-method computer program with a strain-softening material model calculates the local mine stiffness and the post-failure pillar stiffness. The behavior of computer simulations changes depending...

... studies to research mechanisms behind this rockburst so as to identify the existant pillars which could be the object of the same phenomenon and then, to determine the geometric onfigurations to avoid. The calculations were realized with the SUIT3D code which uses the Boundary Element Method...

..., Poisson's Ratio, and thickness. This formulation does not require specific material properties for each individual ayer, and yet it still provides a realistic suppleness to the overburden that is not possible with the classic, homogeneous i otropic elastic overburden. The program calculates tresses...

... with increasing hole size (8 - 180 mm) than for friable Castlegate sandstone. This was especially noticeable for larger holes (30 - 180 mm). This paper presents the results of a theoretical and experimental study that aimed to explain these observations. Model calculations, incorporating splitting failure near...

.... The parameter distribution functions will form the basis for numerical calculations to generate an appropriate distribution function for room closure. Also included is a table that gives the values of the parameters for individual specimens of clean salt under different stresses. mechanism steady-state...