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Many authors have talked about massive hydraulic fracturing <u>Ahmed et al</u>. in 1979, <u>Hanson, in 1981 </u>and <u>Schubarth et al. in 2006</u>. '''Massive hydraulic fracturing '''(MHF) is a primary candidate for stimulating production from the tight gas reservoirs in the U.S. MHF is a more recent application that differs from hydraulic fracturing in that more fluid and proppant are pumped to create more extensive fractures in the reservoir. Application of MHF to increase production from the tight reservoirs has provided mixed and, in many cases, disappointing results especially in lenticular reservoirs (<u>Hanson,1981</u>)... [Contd]

===Summary of Hydraulic fracturing===

Various companies are using or developing different techniques for performing hydraulic fracturing in different operating condition and reservoirs.