hey!

i am currently trying to set up a multilateral water injection well in prosper, but i am not getting quit the expected results.

the well i am working on is, as of now, a vertical injector. due to insufficient injectivity, it is planned to implement radials as a pilot. therefore, radial jetting technology shall be utilized to place four radials on the same level with a radius of curvature of just 30 cm. now i am modeling the new well with prosper to estimate the expected increase in injectivity.

i have set up the prosper model as a water injector (options summary) and placed the four radials by using a multilateral well model. though, i don't get a proper IPR curve. instead of having a positive slope, the IPR curve has a negative one (as for a production well).
my question now is: is it possible that prosper is not able to model a multilateral water injection well properly? or may you have some advise?

thx & KR