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	<id>http://earthwise.bgs.ac.uk/index.php?action=history&amp;feed=atom&amp;title=OR%2F15%2F066_Executive_report_summary</id>
	<title>OR/15/066 Executive report summary - Revision history</title>
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	<updated>2026-05-12T17:00:05Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>http://earthwise.bgs.ac.uk/index.php?title=OR/15/066_Executive_report_summary&amp;diff=32674&amp;oldid=prev</id>
		<title>Dbk: 1 revision imported</title>
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		<updated>2017-09-25T14:13:13Z</updated>

		<summary type="html">&lt;p&gt;1 revision imported&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 15:13, 25 September 2017&lt;/td&gt;
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		<author><name>Dbk</name></author>
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		<id>http://earthwise.bgs.ac.uk/index.php?title=OR/15/066_Executive_report_summary&amp;diff=32673&amp;oldid=prev</id>
		<title>Ajhil at 12:33, 28 July 2017</title>
		<link rel="alternate" type="text/html" href="http://earthwise.bgs.ac.uk/index.php?title=OR/15/066_Executive_report_summary&amp;diff=32673&amp;oldid=prev"/>
		<updated>2017-07-28T12:33:33Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;__NOTOC__&lt;br /&gt;
{{OR/15/066}}&lt;br /&gt;
{| cellspacing=&amp;quot;8&amp;quot; cellpadding=&amp;quot;8&amp;quot;&lt;br /&gt;
|- style=&amp;quot;vertical-align:top;&amp;quot;&lt;br /&gt;
| style=&amp;quot;width: 1100px;&amp;quot; |&lt;br /&gt;
[[Image:OR15066topbanner.jpg|frameless|center|800px|]]&lt;br /&gt;
----&lt;br /&gt;
|}&lt;br /&gt;
&amp;lt;center&amp;gt;&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
| style=&amp;quot;background-color: #dcdcdc;&amp;quot; | &amp;lt;p align=&amp;quot;center&amp;quot;&amp;gt;&amp;#039;&amp;#039;&amp;#039;Executive report summary    &amp;#039;&amp;#039;&amp;#039;&amp;lt;/p&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
| This report summarises the current state-of-the-art knowledge of the hydraulic fracturing process used by the shale gas/oil industry using open peer-reviewed literature and from government commissioned research reports. This report has been written to make statements on our knowledge of the following questions:&lt;br /&gt;
&lt;br /&gt;
* How do hydrofractures form?&lt;br /&gt;
* How far do hydrofractures extend during stimulation?&lt;br /&gt;
* What dictates where hydrofractures propagate?&lt;br /&gt;
* How do hydrofractures interact with the existing fracture network?&lt;br /&gt;
* Can the size and distribution of hydrofractures be controlled?&lt;br /&gt;
&lt;br /&gt;
Gaps in our knowledge have been highlighted, with the largest of these resulting from differences between North American and European shale rocks.    &lt;br /&gt;
|}&lt;br /&gt;
&amp;lt;/center&amp;gt;&lt;br /&gt;
[[Category: OR/15/066 Hydraulic fracturing: a review of theory and field experience | 03]]&lt;/div&gt;</summary>
		<author><name>Ajhil</name></author>
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