Halliburton disclosed a new crosslinked foamed fracturing fluids and also using foam agent in combination with microemulsion to remove any blocks of fluids in the reservoir....[Contd]
==Explosive Fracturing==
'''Table: Explosive Fracturing patent of different Companies.'''
{|border="2" cellspacing="0" cellpadding="4" width="80%"
|align = "center" bgcolor = "#9BBB59" colspan = "4"|'''Explosive Fracturing'''
|-
|align = "center" bgcolor = "#9BBB59"|'''S.No'''
|align = "center" bgcolor = "#9BBB59"|'''Assignee'''
|align = "center" bgcolor = "#9BBB59"|'''Patent'''
|align = "center" bgcolor = "#9BBB59"|'''Comment'''
|-
|align = "center" bgcolor = "#9BBB59"|1
|'''ExxonMobil'''
|align = "center"|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=2011115723 WO2011115723A1]</u></font>
|System and method for fracturing rock in tight reservoirs by explosive fracturing
|-
|align = "center" bgcolor = "#9BBB59"|2
|align = "center"|<nowiki>### </nowiki>
|align = "center"|<nowiki>****</nowiki>
|align = "center"|<nowiki>****</nowiki>
|-
|}
These sections now concentrate on the work done by the companies or institutes.
===ExxonMobil===
[http://www.wipo.int/pctdb/en/wo.jsp?WO=2011115723 WO2011115723A1] titled "System and method for fracturing rock in tight reservoirs" by ExxonMobil. A conventional hydraulic and explosive fracturing lead to pervasive, isotropic permeability increase in the rock of the formation but does not create a spatially extensive network of fractures.
Moreover hydraulic fracturing has problems of well damage when using gel based fluids and water based fluids which create a hindrance in the flow of the hydrocarbons from the formation after completion.
Multi lateral wells are drilled and explosives are placed in the lateral drilled wells.
'''Explosion fracturing is done in the lateral wells by using a squash head charge'''. Squash head charge is oriented towards the face of the wells by a frame, internal electrical bus is coupled which transmit electrical signal to detonate the squash head charge, a propellant charge propels a proppant into fractures induced in the rock face by an explosion of the squash head charge....[Contd]