Page 79 - 6685
P. 79

compensation.  There  are  factors  of  current  and  accumulated
          compensation.
                     A factor of current compensation - is the ratio of injected
          water to flowrates liquids that are selected, reduced to formation
          conditions per unit of time (year, month, day and etc.)
                                    Q  b
                       m            inl  w        ,                             (4.3)
                                         
                     cur
                           Q  b   Q  b   Q    k 
                          
                            oil  oil  w  w   los 
          where  Q inj    -  volume  flowrate  injected  water  under  standard
          conditions;  b w  –  volume  formation  factor  for  the  injected  water
          (b w1,01);  Q oil    -  volume  flowrate  for  the  oil  under  standard
          conditions; boil – volume formation factor for the oil; Q w - volume
          flowrate  selected  water  under  standard  conditions;  b w‟  -  volume
          formation factor for the selected water, which is different from the
          volume formation factor for fresh water; Q los – loss of water that
          escapes the contour; k - factor for the loss of water in the periodic
          work  injection  wells,  under  breaks  in  water  lines  and  other
          technological reasons. This ratio is assumed to be k = 1,1-1,15.
                  A  factor  of  current  compensation  shows  how  forcing
          compensated selection at any given time. According to the current
          values  of  the  coefficient,  compensation  can  make  the  following
          conclusions. If m cur < 1 injection behind the selection and expect
          the average formation pressure should drop. If m cur > 1 injection
          exceeds the selection and the formation pressure should rise. When
          m cur = 1 should have been the stabilization of the current formation
          pressure  at  the  current  level,  no  matter  what  it  was  in  early
          development.
                  A  factor  of  accumulated  compensation  is  the  ratio  of
          injected  water  to  flowrates  liquids  that  are  taken  to  the
          consolidated  formation  conditions  during  the  whole  period  of
          injecting











                                         79
   74   75   76   77   78   79   80   81   82   83   84