PETE 401 Test 1 Questions & Answers 2024/2025
conservation of mass, flow equation, equation of state - ANSWERSmathematical model combines
conservation of mass - ANSWERSnet mass rate in = rate of mass accumulation
flow equation - ANSWERSDarcy's Law
equation of state - ANSWERSmodels pre...
conservation of mass, flow equation, equation of state - ANSWERSmathematical model combines
conservation of mass - ANSWERSnet mass rate in = rate of mass accumulation
flow equation - ANSWERSDarcy's Law
equation of state - ANSWERSmodels pressure, T, V or P (FVF)
initial and boundary conditions - ANSWERSwhat is required for a particular solution?
non linear - ANSWERSthe PDE is (linear or non linear)
because we have p dependent terms which we are solving for - ANSWERSwhy is PDE non linear?
interative - ANSWERSto solve PDE, an _____________ iterative procedure is required
material balance - ANSWERS_________________ _________________ for volumetric undersaturated oil
reservoir
diffusivity equation - ANSWERS_____________ _____________ for pressure transient analysis
we assume the reservoir acts like a tank and therefore no flow, constant porosity - ANSWERSwhat are
some assumptions we make for the material balance for volumetric undersaturated oil reservoirs?
, non-linear PDE in cylindrical coordinates - ANSWERSfor diffusivity equation for pressure transient test
analysis start with
compressibility, permeability, porosity, viscosity, negligible - ANSWERSfor the PDE for the diffusivity
equation we assume:
-small and constant _____________
-________________ is constant and isotropic
-constant ______________
-constant ______________
-contains terms in the DE that are _____________
linear - ANSWERSwhen there are no functions of p in the partial derivatives, the equation is
___________
more accurate, more difficult to solve - ANSWERSfewer assumptions in reservoir simulation means:
linear - ANSWERSis the diffusivity equation linear or non linear?
approximations to the PDE that enable solution - ANSWERSfinite-difference approximation make
with finite differences - ANSWERSfor finite-difference approximations replace the partial derivatives in
the PDE with
error term - ANSWERS0(delta_x) in a Taylor series expansion is the
proportional - ANSWERS0(delta_x) is _______________ to delta_x in a Taylor series expansion
truncation error - ANSWERSwhen you drop the error term you introduce
smaller - ANSWERSthe _____________ the delta_x, the more closely the FD approximates
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