module choke
    
            USE CHOKEVARIABLES 
            !USE CDataDisplayConsoleVariables, CasingPressureDataDisplay=>CasingPressure!, StandPipePressureDataDisplay=>StandPipePressure
            USE CChokeProblemsVariables
            !use CChokeControlPanelVariables, StandPipePressureChoke=>StandPipePressure
            use MudSystemVARIABLES
            USE CChokeManifoldVariables
    
    contains
    
    subroutine CHOKE_MainBody

    implicit none
    Integer I
    
    INTEGER CHNUMBER
        

      ! time2=time2+0.1
       

!=========================================================================== 
    
    !StandPipePressureChoke= STGauge_Pressure         ! from module mud system  
   ! CasingPressure   = CasingPressureDataDisplay  
   
   
    
    
!===========================================================================
!   
!                   	   HYDRAULIC CHOKE CONTROL
!                            
!===========================================================================    


    IF(ChokeControlPanel%ChokeSelectorSwitch== 1) THEN
        ChokeControlPanel%Choke1LED=1
        ChokeControlPanel%Choke2LED=0
        CHNUMBER=1
    ELSE
        ChokeControlPanel%Choke2LED=1
        ChokeControlPanel%Choke1LED=0
        CHNUMBER=2
    ENDIF
    
    
    

 if (ABS(ChokeControlPanel%ChokeControlLever)==1.0 .AND. ChokeControlPanel%ChokePanelRigAirSwitch == 1 .AND. (CHOOKE(1)%FailMalf==0 .OR. CHOOKE(2)%FailMalf==0)) then
        CALL PIPE_RAMS_CHOKE(CHNUMBER)
 end if
        
        
  


     IF (ChokeControlPanel%Choke1LED==1) THEN
         ChokeControlPanel%ChokePosition= (1 - GaugeChokePositionMailf) * CHOOKE(1)%PercentClose*10       ! display monitor
     ELSE       ! Choke2LED==1
         ChokeControlPanel%ChokePosition= (1 - GaugeChokePositionMailf) * CHOOKE(2)%PercentClose*10       ! display monitor
     ENDIF



! =================== calculating Area     
     
      ! AreaChoke=0.5
     ! .91 >> 9 percent clearance

   CHOOKE(1)%AreaChoke=0.01334635-(0.01334635* MIN(CHOOKE(1)%PercentClose / 0.91 , 1.0)) !ft^2     0.01334635 is ChokeAreaFullyOpen (ft^2)
   CHOOKE(2)%AreaChoke=0.01334635-(0.01334635* MIN(CHOOKE(2)%PercentClose/ 0.91 , 1.0)) !ft^2
   
   !write(*,*) 'CHOOKE(1)%AreaChoke= ' , CHOOKE(1)%AreaChoke
   
   

    
    HydraulicChoke1WashoutCoef= HydraulicChoke1WashoutCoef * CHOOKE(1)%WashoutMalf    
    HydraulicChoke1WashoutCoef= MIN( 0.5 , HydraulicChoke1WashoutCoef+ CHOOKE(1)%WashoutMalf*(0.5/(180.0/DeltaT_Choke)) ) ! 0.5 = maximum washout coef , 180.0 sec = 3 min duration time
            
    HydraulicChoke2WashoutCoef= HydraulicChoke2WashoutCoef * CHOOKE(2)%WashoutMalf    
    HydraulicChoke2WashoutCoef= MIN( 0.5 , HydraulicChoke2WashoutCoef+ CHOOKE(2)%WashoutMalf*(0.5/(180.0/DeltaT_Choke)) ) ! 0.5 = maximum washout coef , 180.0 sec = 3 min duration time
    

    !write(*,*) 'HydraulicChoke1WashoutCoef=' , HydraulicChoke1WashoutCoef
    
    IF (CHOOKE(1)%PlugMalf == 1) THEN
        
            Present_HydraulicChoke1Plug= Present_HydraulicChoke1Plug * CHOOKE(1)%PlugMalf 
            ! integer: HydraulicChoke1PluggedPercent,HydraulicChoke1PluggedPercent_Old,PlugTimeCounter,ChokePlugTimeDelay
            ! real: Present_HydraulicChoke1Plug,DeltaPlug1Percent
    
            !write(*,*) 'HydraulicChoke1PluggedPercent=' , HydraulicChoke1PluggedPercent
    
            if ( (HydraulicChoke1PluggedPercent - HydraulicChoke1PluggedPercent_Old) /= 0) then
                DeltaPlug1Percent = (REAL(HydraulicChoke1PluggedPercent)/100.) - Present_HydraulicChoke1Plug
                Plug1TimeCounter = 0
                !write(*,*) 'DeltaPlug1Percent, Present_HydraulicChoke1Plug  =  ' ,DeltaPlug1Percent , Present_HydraulicChoke1Plug 
            endif
    
    
            Plug1TimeCounter= Plug1TimeCounter + 1

            HydraulicChoke1PluggedPercent_Old= HydraulicChoke1PluggedPercent
    
            if (Plug1TimeCounter <= ChokePlugTimeDelay) then    !ChokePlugTimeDelay=1800
        
                Present_HydraulicChoke1Plug = Present_HydraulicChoke1Plug + CHOOKE(1)%PlugMalf* ((DeltaPlug1Percent / real(ChokePlugTimeDelay)))     ! real(ChokePlugTimeDelay)= 600.0
        
            endif
  
            !write(*,*) 'Present_HydraulicChoke1Plug=' , Present_HydraulicChoke1Plug
    
    ENDIF
    
    
    
    
    
    
    IF (CHOOKE(2)%PlugMalf == 1) THEN 

            Present_HydraulicChoke2Plug= Present_HydraulicChoke2Plug * CHOOKE(2)%PlugMalf 
            ! integer: HydraulicChoke2PluggedPercent,HydraulicChoke2PluggedPercent_Old,PlugTimeCounter,ChokePlugTimeDelay
            ! real: Present_HydraulicChoke2Plug,DeltaPlug2Percent
    
    
            if ( (HydraulicChoke2PluggedPercent - HydraulicChoke2PluggedPercent_Old) /= 0 ) then
                DeltaPlug2Percent = (REAL(HydraulicChoke2PluggedPercent)/100.) - Present_HydraulicChoke2Plug
                Plug2TimeCounter = 0
            endif
    
            Plug2TimeCounter= Plug2TimeCounter + 1

            HydraulicChoke2PluggedPercent_Old= HydraulicChoke2PluggedPercent
    
            if (Plug2TimeCounter <= ChokePlugTimeDelay) then    !ChokePlugTimeDelay=1800
        
                Present_HydraulicChoke2Plug = Present_HydraulicChoke2Plug + CHOOKE(2)%PlugMalf *((DeltaPlug2Percent / real(ChokePlugTimeDelay)))     ! real(ChokePlugTimeDelay)= 1800.0
        
            endif 
    
    ENDIF
    

    
    
    
    
   
   ! fully open area is 123/64 in^2 = 0.01334635 ft^2
   CHOOKE(1)%AreaChoke=CHOOKE(1)%AreaChoke+(CHOOKE(1)%WashoutMalf*HydraulicChoke1WashoutCoef*ChokeAreaFullyOpen/144.0)      ! Initialised in Choke Startup
   
   !write(*,*) 'CHOOKE(1)%WashoutMalf , CHOOKE(1)%AreaChoke='  ,CHOOKE(1)%WashoutMalf , CHOOKE(1)%AreaChoke
   
   CHOOKE(1)%AreaChoke=CHOOKE(1)%AreaChoke-(CHOOKE(1)%PlugMalf* Present_HydraulicChoke1Plug *CHOOKE(1)%AreaChoke)         ! Initialised in Choke Startup
   
   CHOOKE(2)%AreaChoke=CHOOKE(2)%AreaChoke+(CHOOKE(2)%WashoutMalf*HydraulicChoke2WashoutCoef*ChokeAreaFullyOpen/144.0)      ! Initialised in Choke Startup
   CHOOKE(2)%AreaChoke=CHOOKE(2)%AreaChoke-(CHOOKE(2)%PlugMalf* Present_HydraulicChoke2Plug *CHOOKE(2)%AreaChoke)         ! Initialised in Choke Startup
   !write(*,*) 'CHOOKE(2)%WashoutMalf , CHOOKE(2)%AreaChoke='  ,CHOOKE(2)%WashoutMalf , CHOOKE(2)%AreaChoke
   
   
   CHOOKE(1)%AreaChokeFinal= CHOOKE(1)%AreaChoke
   CHOOKE(2)%AreaChokeFinal= CHOOKE(2)%AreaChoke 
   
   !    144: ft^2 to in^2
    CALL SetHydraulicChock1(100 - nint((CHOOKE(1)%AreaChokeFinal/(ChokeAreaFullyOpen/144.))*100))     ! for manifold valve    
    CALL SetHydraulicChock2(100 - nint((CHOOKE(2)%AreaChokeFinal/(ChokeAreaFullyOpen/144.))*100))     ! for manifold valve     
   
   
    !write(*,*) 'CHOOKE(1)%PercentClose=' , CHOOKE(1)%PercentClose     ! close percent 0 to 100
    !write(*,*) 'ChokePosition=' , ChokePosition     ! close position 0 to 10 for display
    !write(*,*) 'CHOOKE(1)%AreaChokeFinal=' , CHOOKE(1)%AreaChokeFinal       ! Open Area (in^2) with clearance
    !write(*,*) '(ChokeAreaFullyOpen/144.)=' , (ChokeAreaFullyOpen/144.)
    !write(*,*) 'valve value=' , 100 - nint((CHOOKE(1)%AreaChokeFinal/(ChokeAreaFullyOpen/144.))*100)        ! percent close 0 to 100 with clearance
    !write(*,*) 'Valve(33)%Status=' , Valve(33)%Status       ! T : open , F: close

    
    
    
    
! =================== calculating Area   
   
   !AreaChoke= CHOOKE(1)%AreaChoke   !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< badan moteghayer 1 ya 2 shavad
   
! write(*,*)    'AreaChoke:',AreaChoke

!===========================================================================
!                        	MUD PUMP STROKES
!                   & TOTAL STROKE- CHOKE CONTROL PANEL
!=========================================================================== 
   
!************************* IN MUD SYSTEM MODULE*************************
   

    
 end subroutine CHOKE_MainBody 


    


end module CHOKE