This project includes massive data processing and graphics drawing, complex fluid flow in
wellbore, heat conduction in formation and non production layer, heat flow coupling between
wellbore and formation, acoustic data interpretation method and comprehensive evaluation
method of optical fiber test data.
Drawing massive data processing and graphics.
By using CADOProvider, we can efficiently read the massive depth
temperature data, and form the temperature distribution cloud images and three-dimensional
dynamic distribution maps of different depths at different times, which can be used for
multi-scale observation of temperature change and temperature cross-section distribution
The establishment of wellbore heat flow coupling model and the
initial and boundary conditions are determined.
The basic data of wellbore and fluid are imported from various
data files. Considering the influence of different velocity, flow pattern and physical
property of fluid in wellbore on the heat transfer of fluid, the heat flow coupling model of
different pipe flow pattern is established. The solution of continuity equation, momentum
equation and energy equation in steady state is taken as the initial condition, and the
velocity distribution at the wellhead is taken as the boundary condition.
Heat flow coupling between wellbore and formation is established
The heat exchange model between wellbore and formation is
established, and the equation of state of fluid between wellbore and formation is
The physical properties of fluid mechanics and thermodynamics are
Determine the viscosity and other physical parameters of wellbore
and formation fluid, as well as the specific heat capacity, thermal conductivity and other
thermodynamic parameters; determine the formation parameters of pay formation and non pay
formation area; determine the thermal conductivity, specific heat capacity and other
thermodynamic parameters of pay formation and non pay formation area.
The solution method of temperature pressure coupling model in
wellbore flow and formation seepage is established.
Numerical simulation method is used to solve the temperature and
pressure coupling equations in wellbore and formation. Numerical simulation involves mesh
generation, equation discretization and large sparse matrix solution. In terms of grid,
one-dimensional grid is used in the wellbore and axisymmetric two-dimensional grid is used
in the formation. The temperature and pressure are discretized by finite volume. The large
sparse matrix is solved by GMRES method.
The distributed acoustic data interpretation method is explored
The data processing and interpretation software of optical fiber
test is developed by using component technology.