1) Ballasted 2) Evened 3) Leveledout 4) Stabilised 5) Stable 6) Steadied 1) Made stable or firm 2) Stabilised 3) Stable 
a well is considered 'stabilized' when, in the case of a flowing well, the rate of production through a given size of choke remains constant, or, in the case of pumping well, when the fluid column within the well remains constant in height. 
[adj] - made stable or firm
stabilised adjective made stable or firm