This manual in situ was issued to narrate or recite obviously, the important steps for how to establish an efficient bioremediation pool, for the sake of creating a safety durable environment at oil field areas in general and in Sudan in particular. The book can be considered as a guidance and usher landmark or milestone of an important approach or technique, that capable to change this repulsive grotesque or freakish environmental rebarative nightmare, that a donning horrendous an ugly cruelest environment. This reparative approach will able to restore and amend this environmental disgruntle and unsatisfying situation that emerged by oil operations (in form of oil produced water), by disrobing it from unconquerable pollutants, that dissolved in it, thru pre-emptive strike using micro-organisms, to smash any remediable ones and debilitate their effect on the environment by close its aperture or outlet for environmental risks andreturn the situation smack-dab to its normality as it was before the activities i.e. Intervene to replace negativity with positivity (re-instate the environment).