... or stimulation). Equation 4 can also be used for mixed flow of dead oil (pressure above oil bubble point pressure) and water provided the productivity index and flow efficiency are for the mixture of the two liquids. For single phase gas flow, average reservoir pressure is computed as 9 (5) p...

... Abstract We compare four approaches for efficient placement of acid in matrix-acidization treatments: MAPDIR, particulate diverting agents, viscous acids, and foams. For each process, we develop analytical equations for flow into each reservoir interval and resulting skin factor. We consider...

... calculations are also discussed. stress analysis natural frequency plane axis drillpipe procedure drillstring design hole wall evaluation stiffness upstream oil & gas curvature configuration loading spe 27976 calculation effective tension equation unit length torque-drag...

... Abstract In the last five years many new concepts and tools have been developed to increase the flexibility of reservoir simulation. The most important ones are: a) PEBI (or Voronoi) and Median grids with the use of the Control Volume Method (Integral formulation of the fluid flow equations); b...

.... In this paper, a new dual porosity modeling approach is presented for oil/water flow in fractured reservoirs. In the formulation, matrix blocks are also discretized. The resulting finite-difference equations for the matrix blocks, however, are mathematically decoupled from the fracture equations. The equations...

... spe 27959 pressure drop equation upstream oil & gas phase flow modeling spe 27959 multiphase flow modeling liquid production control slug flow stratified flow reservoir surveillance mechanistic modeling Introduction In the solution of engineering problems one can identify four...

... of bubble and slug lengths. We shall therefore continue to talk about the UC model since the equations are the same. Preliminary Definitions The inlet flow conditions will be considered constant. They are specified by the mass flow rates of each phase: (1) m k = ρ k j k...

... information society of petroleum engineers exploration spe 27960 reservoir surveillance upstream oil & gas bp exploration slug holdup slug frequency slug catcher flowrate slug length consequence equation slug flowline water cut correlation mixture velocity pipeline transient behavior...