Okwu izugbe maka usoro ịgba ọgwụ na-eji kemịkalụ pụrụ iche iji melite mgbake mmanụ, wepụ mmebi nguzobe, perforations egbochiri ma ọ bụ n'ígwé nhazi, belata ma ọ bụ gbochie corrosion, kwalite mmanụ crude, ma ọ bụ okwu okwu mmesi obi ike nke mmanụ crude.Enwere ike ịgbanye ọgwụ mgbochi mgbe niile, na batches, na olulu mmiri injection, ma ọ bụ mgbe ụfọdụ n'olulu mmiri mmepụta.