Changes

All the patents obtained from the database were filtered to find out the most relevant patents, this process included going through the full text of the patent. A total of 125 relevant Relevant patents related to stimulation technique for tight gas formations were found. This was followed by a detailed analysis of the relevant records. All the patents were analyzed to capture the focus of the patent, stimulation technique described in the invention and the fracturing ingredients used in the invention. The analyses of the patents lead to following observations:

Schlumberger tops the assignee chart with 32 patents related to tight gas stimulation followed by , Exxonmobil and Halliburton. 3M has filed its patent feature in collaboration with Univ of texas. Sclumberger too have filed some patents in collaboration with Prad Research Institute. Hill Gilman tops the top inventors chart with 4 patents related to tight gas stimulation followed by Kaminsky Robert and Fu, Diankuithis list.