Research on the method and system of wellbore nodal analysis for
condensate oil and gas wells
Node theory under
wellbore coupling flow including: The study of high pressure physical parameters of oil, gas
and water, the calculation theory of phase diagram of condensate gas well, the theory of
gas-liquid two-phase vertical pipe flow under wellbore condensate, the method of calculating
IPR curve of condensate gas well (gas phase), the method of calculating OPR curve of
condensate gas well, the calculation of condensate gas liquid capacity, the calculation of
erosion flow rate and the prediction of gas well hydrate. Gas well wellbore temperature and
pressure distribution calculation, gas well through nozzle throttling calculation, gas well
through critical flow calculation.
Research and system development of well testing analysis and
productivity evaluation method for condensate reservoir
Condensate gas
seepage theory, IPR productivity evaluation and well testing theory research, the contents
are as follows: The establishment of condensate gas mathematical model, considering
condensate effect definition of pseudo-pressure, dimensionless parameters/equations and
boundary conditions, dimensionless equation solution method, dimensionless plot analysis,
condensate gas well testing analysis method, formation productivity calculation method,
condensate reservoir mathematical model build (reservoir model, geological model, Wellbore
model, outer boundary model).
The software development framework design of calculation method
and technology. The main contents are as follows:
Software development
involves complex calculation (formation, wellbore and throttle valve, etc.), complex data
(fluid, formation and well parameters, etc.), software data flow, software data system,
software function optimization, output results and so on.
The internal data
management of the software based on XML; the parameters needed for software calculation; the
formatted output of the software; the core functional algorithm function of the software;
the interface of the software and the related algorithm of the output; the graphic display
and printing framework of the software; and the partial framework of the software output
system.
