mirror of
https://github.com/OPM/opm-simulators.git
synced 2024-12-23 16:00:01 -06:00
220 lines
8.1 KiB
C
220 lines
8.1 KiB
C
/*
|
|
Copyright 2012 SINTEF ICT, Applied Mathematics.
|
|
|
|
This file is part of the Open Porous Media project (OPM).
|
|
|
|
OPM is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OPM is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OPM. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef OPM_NEWWELLS_H_INCLUDED
|
|
#define OPM_NEWWELLS_H_INCLUDED
|
|
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* Main OPM-Core well data structure along with functions
|
|
* to create, populate and destroy it.
|
|
*/
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** Well type indicates desired/expected well behaviour. */
|
|
enum WellType { INJECTOR, PRODUCER };
|
|
/** Type of well control equation or inequality constraint.
|
|
* BHP -> Well constrained by bottom-hole pressure target.
|
|
* RATE -> Well constrained by total reservoir volume flow rate.
|
|
*/
|
|
enum WellControlType { BHP , RATE };
|
|
/** Canonical component names and ordering. */
|
|
enum SurfaceComponent { WATER = 0, OIL = 1, GAS = 2 };
|
|
|
|
|
|
/** Controls for a single well.
|
|
|
|
* Each control specifies a well rate or bottom-hole pressure. Only
|
|
* one control can be active at a time, indicated by current. The
|
|
* meaning of each control's target value depends on the control
|
|
* type, for BHP controls it is a pressure in Pascal, for RATE
|
|
* controls it is a volumetric rate in cubic(meter)/second. The sign
|
|
* convention for RATE targets is as follows:
|
|
* (+) Fluid flowing into reservoir, i.e. injecting.
|
|
* (-) Fluid flowing out of reservoir, i.e. producing.
|
|
* The active control as an equality constraint, whereas the
|
|
* non-active controls should be interpreted as inequality
|
|
* constraints (upper or lower bounds). For instance, a PRODUCER's
|
|
* BHP constraint defines a minimum acceptable bottom-hole pressure
|
|
* value for the well.
|
|
*/
|
|
struct WellControls
|
|
{
|
|
int num; /** Number of controls. */
|
|
enum WellControlType *type; /** Array of control types. */
|
|
double *target; /** Array of control targets. */
|
|
int current; /** Index of current active control. */
|
|
|
|
void *data; /** Internal management structure. */
|
|
};
|
|
|
|
|
|
|
|
/** Data structure aggregating static information about all wells in a scenario. */
|
|
struct Wells
|
|
{
|
|
int number_of_wells; /** Number of wells. */
|
|
|
|
enum WellType *type; /** Array of well types. */
|
|
double *depth_ref; /** Array of well bhp reference depths. */
|
|
double *zfrac; /** Component volume fractions for each well, size is (3*number_of_wells).
|
|
* This is intended to be used for injection wells. For production wells
|
|
* the component fractions will vary and cannot be specified a priori.
|
|
*/
|
|
int *well_connpos; /** Array of indices into well_cells (and WI).
|
|
* For a well w, well_connpos[w] and well_connpos[w+1] yield
|
|
* start and one-beyond-end indices into the well_cells array
|
|
* for accessing w's perforation cell indices.
|
|
*/
|
|
int *well_cells; /** Array of perforation cell indices.
|
|
* Size is number of perforations (== well_connpos[number_of_wells]).
|
|
*/
|
|
double *WI; /** Well productivity index, same size and structure as well_cells. */
|
|
struct WellControls **ctrls; /** Well controls, one set of controls for each well. */
|
|
|
|
|
|
void *data; /** Internal management structure. */
|
|
};
|
|
|
|
|
|
/** Data structure aggregating dynamic information about all wells in a scenario.
|
|
* All arrays in this structure contain data for each perforation,
|
|
* ordered the same as Wells::well_cells and Wells:WI. The array
|
|
* sizes are, respectively,
|
|
*
|
|
* gpot n*NP
|
|
* A n²*NP (matrix in column-major (i.e., Fortran) order).
|
|
* phasemob n*NP
|
|
*
|
|
* in which "n" denotes the number of active fluid phases (and
|
|
* constituent components) and "NP" is the total number of
|
|
* perforations, <CODE>well_connpos[ number_of_wells ]</CODE>.
|
|
*/
|
|
struct CompletionData
|
|
{
|
|
double *gpot; /** Gravity potentials. */
|
|
double *A; /** Volumes to surface-components matrix, A = RB^{-1}. */
|
|
double *phasemob; /** Phase mobilities. */
|
|
};
|
|
|
|
/**
|
|
* Construct a Wells object initially capable of managing a given
|
|
* number of wells and total number of well connections
|
|
* (perforations).
|
|
*
|
|
* Function add_well() is used to populate the Wells object. No
|
|
* reallocation occurs in function add_well() as long as the
|
|
* initially indicated capacities are sufficient. Call function
|
|
* destroy_wells() to dispose of the Wells object and its allocated
|
|
* memory resources.
|
|
*
|
|
* \param[in] nwells Expected number of wells in simulation scenario.
|
|
* Pass zero if the total number of wells is unknown.
|
|
*
|
|
* \param[in] nperf Expected total number of well connections
|
|
* (perforations) for all wells in simulation
|
|
* scenario. Pass zero if the total number of well
|
|
* connections is unknown.
|
|
*
|
|
* \return A valid Wells object with no wells if successful, and NULL
|
|
* otherwise.
|
|
*/
|
|
struct Wells *
|
|
create_wells(int nwells, int nperf);
|
|
|
|
|
|
/**
|
|
* Append a new well to an existing Wells object.
|
|
*
|
|
* Increments W->number_of_wells by one if successful. The new well
|
|
* does not include operational constraints. Such information is
|
|
* specified using function append_well_controls(). The current
|
|
* control index is set to -1 (invalid).
|
|
*
|
|
* \param[in] type Type of well.
|
|
* \param[in] depth_ref Reference depth for well's BHP.
|
|
* \param[in] nperf Number of perforations.
|
|
* \param[in] zfrac Injection fraction (three components) or NULL.
|
|
* \param[in] cells Grid cells in which well is perforated. Should
|
|
* ideally be track ordered.
|
|
* \param[in] WI Well production index per perforation, or NULL.
|
|
* \param[in,out] W Existing set of wells to which new well will
|
|
* be added.
|
|
*
|
|
* \return Non-zero (true) if successful and zero otherwise.
|
|
*/
|
|
int
|
|
add_well(enum WellType type ,
|
|
double depth_ref,
|
|
int nperf ,
|
|
const double *zfrac ,
|
|
const int *cells ,
|
|
const double *WI ,
|
|
struct Wells *W );
|
|
|
|
|
|
/**
|
|
* Append operational constraint to an existing well.
|
|
*
|
|
* Increments ctrl->num by one if successful. Introducing a new
|
|
* operational constraint does not affect the well's notion of the
|
|
* currently active constraint represented by ctrl->current.
|
|
*
|
|
* \param[in] type Control type.
|
|
* \param[in] target Target value for the control.
|
|
* \param[inout] ctrl Existing set of well controls.
|
|
* \return Non-zero (true) if successful and zero (false) otherwise.
|
|
*/
|
|
int
|
|
append_well_controls(enum WellControlType type ,
|
|
double target,
|
|
struct WellControls *ctrl );
|
|
|
|
/**
|
|
* Clear all controls from a well.
|
|
*
|
|
* Does not affect the control set capacity. */
|
|
void
|
|
clear_well_controls(struct WellControls *ctrl);
|
|
|
|
|
|
/**
|
|
* Wells object destructor.
|
|
*
|
|
* Disposes of all resources managed by the Wells object.
|
|
*
|
|
* The Wells object must be built using function create_wells() and
|
|
* subsequently populated using function add_well().
|
|
*/
|
|
void
|
|
destroy_wells(struct Wells *W);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* OPM_NEWWELLS_H_INCLUDED */
|