Changes
/* Summary of Sleeve Fracturing */
===Summary of Sleeve Fracturing===
....[Contd]
==Hydrocarbon recovery by using biogenic materials combined with Pneumatic fracturing==
{|border="2" cellspacing="0" cellpadding="4" width="80%"
|align = "center" bgcolor = "#9BBB59" colspan = "4"|'''Hydrocarbon recovery by using biogenic materials combined with pneumatic 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
|align = "center"|'''Groundwater Services Inc'''
|align = "center"|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=2008041990 WO2008041990A1]</u></font>
|align = "center"|Stimulating anaerobic biologic production of methane from non-liquid hydrocarbon-bearing subsurface formations
|-
|}
These sections now concentrate on the work done by the companies or institutes.
===Groundwater Services Inc.===
[http://www.wipo.int/pctdb/en/wo.jsp?WO=2008041990 WO2008041990A1] titled "Methods and systems for '''stimulating biogenic''' production of natural gas in a subterranean formation" by Groundwater Services Inc. Conventional processes for recovery of hydrocarbon from the formation show following disadvantages such as-<br>-Heat treatment for kerogen formation method shows intensive process, requiring both an abundance of water and a ready supply of energy for producing hydrocarbon. <br>-Retorting processes shows environmental impacts, and yield undesirable by-products.<br>-Thermal in situ conversion method shows high initial capital costs and the operational costs.
A new method and systems for stimulating anaerobic biologic production of methane from non-liquid hydrocarbon-bearing subsurface formations. It comprises of subsurface formation comprising a hydrocarbon; an injection fluid disposed within the fractures; and indigenous microorganisms disposed within the formation. The advantages of the present are low energy consumption, no byproduct generation and ecofriendly bioconversion method for converting hydrocarbon to methane from these formations. This method can be used in combination with Hydraulic fracturing and Pneumatic fracturing.
===Information from the Article===
'''Lan et. al., 2010 '''of '''Drilling Research Institute of Shengli Oilfield''', Dongying, Shandong studied on application of '''bio-enzymatic '''completion fluid in the tight sand gas reservoirs of ordos Daniudi Gas field. Solid free brine completion fluid shows a little effect on the formation damage, water blocking and solid slugging with small particle. An environment acceptable and nontoxic bio-enzymatic completion fluid was prepared and tested in 15 horizontal wells of Ordos Dainiudi gas field. Excellent hydrocarbon gas production of well is higher than that of adjacent wells after stimulation. It also reduces the viscosity of drilling fluid by degrading the polymer, greatly reduce the formation water sensitivity and water blocking damages.
===Summary of Hydrocarbon recovery by using biogenic materials combined with Pneumatic fracturing===
....[Contd]
