Multi-zone stimulation technology

Due to ever rising demand of petroleum all over the globe and substantiate decrease in the discovery of new fields, it has become necessary to recover maximum amount of hydrocarbons possible from the available resources.The abundance of multiple vertically distributed discrete reservoirs or resources contained in long productive intervals is relatively high. Thus, it is inevitable to have technology for economical recovery of maximum possible hydrocarbons from this type of reservoir. Multi-zone stimulation technology is one of the important methods to increase the recovery factor for such reservoirs.Multi-zone stimulation technology involves of stimulating all zones individually. The major idea for doing so is that when operation is taking place in one zone, the other zones are not affected by it.ExxonMobil has developed the technology involving dynamic perforating and annular coiled tubing fracturing within a single cased wellbore which was awarded as most innovative commercial technology in 2005.This technology is presently under operation in Canada and United States. It has been in limelight since last decade because of its rapidity and reliability which in turn leads to improved well economics. MZST is rapid as work is done in single operation in a single trip and reliable as it is deployable in variety of unconventional resources such as tight gas, shale gas, coal bed methane, etc.Taking all aspects into consideration and analysing present scenario we anticipate that this technology will be promising for sustainable and economical field development and will help considerably to overcome the demand supply gap of hydrocarbons.