<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>010 - Disclosure - Property and Equipment</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>Context_6ME__30-Jun-2013</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0000086264</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2013-01-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-06-30T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="6 Months Ended" /><Label Key="Calendar" Id="1" Label="Jun. 30, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_PropertyPlantAndEquipmentAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Property and Equipment [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>verboseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="Context_6ME__30-Jun-2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt; font-weight: bold;"&gt;&lt;font style="display: inline; text-decoration: underline;"&gt;Note&amp;#160;4 &amp;#8211; Property and Equipment&lt;/font&gt;&lt;/font&gt;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block;"&gt;&amp;#160;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;Net property and equipment as of June 30, 2013 and December 31, 2012 consists of the following:&lt;/font&gt;&lt;/div&gt;
&lt;div align="right"&gt;
&lt;table style="width: 100%; font-family: times new roman; font-size: 10pt;" cellspacing="0" cellpadding="0"&gt;
&lt;tr&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;(in thousands)&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"&gt;
&lt;div style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;
&lt;div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;June 30,&lt;/font&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;
&lt;div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;2013&lt;/font&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid;" valign="bottom" colspan="2"&gt;
&lt;div style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;
&lt;div align="center" style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;December 31, 2012&lt;/font&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160; &lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td valign="bottom"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;Oil and gas properties&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" colspan="2"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#cceeff"&gt;
&lt;td valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 9.35pt;" &gt;&lt;/font&gt;Proved oil and gas properties&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;94,493&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;91,132&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="white"&gt;
&lt;td valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 9.35pt;" &gt;&lt;/font&gt;Unproved properties not subject to depletion&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new
 roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;1,743&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 25.85pt;" &gt;&lt;/font&gt;1,126&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#cceeff"&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 9.35pt;" &gt;&lt;/font&gt;Accumulated depreciation, depletion, amortization and impairment&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;(60,190&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;)&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 10.3pt;" &gt;&lt;/font&gt;(58,946&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;)&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="white"&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 36pt;" &gt;&lt;/font&gt;Net oil and gas properties&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;36,046&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;33,312&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#cceeff"&gt;
&lt;td valign="bottom" width="76%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160; &lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="white"&gt;
&lt;td align="left" style="padding-left: 0pt; margin-left: 9pt;" valign="bottom" width="76%"&gt;
&lt;div align="left" style="text-indent: -9pt; display: block; margin-left: 27pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;Furniture and fixtures, computer hardware and software, and other equipment&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td
 style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;887&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 35.85pt;" &gt;&lt;/font&gt;782&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#cceeff"&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 9.35pt;" &gt;&lt;/font&gt;Accumulated depreciation and amortization&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;(598&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;)&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 26.95pt;" &gt;&lt;/font&gt;(540&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;)&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="white"&gt;
&lt;td style="padding-bottom: 2px;" valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&lt;font style="margin-left: 36pt;" &gt;&lt;/font&gt;Net other property and equipment&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;289&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 2px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 2px solid; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;242&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 2px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#cceeff"&gt;
&lt;td valign="bottom" width="76%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160; &lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="white"&gt;
&lt;td style="padding-bottom: 4px;" valign="bottom" width="76%"&gt;
&lt;div align="justify" style="text-indent: 0pt; display: block; margin-left: 9pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;Total net property and equipment&lt;/font&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 4px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 4px double; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 4px double; text-align: right;" valign="bottom" width="9%"&gt;&lt;font
 style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;36,335&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 4px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td align="right" style="padding-bottom: 4px;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 4px double; text-align: left;" valign="bottom" width="1%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="border-bottom: black 4px double; text-align: right;" valign="bottom" width="9%"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;33,554&lt;/font&gt;&lt;/td&gt;
&lt;td style="text-align: left; padding-bottom: 4px;" valign="bottom" width="1%" nowrap="nowrap"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;&amp;#160;&lt;/font&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-indent: 0pt; display: block;"&gt;&amp;#160;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;As of June 30, 2013 and December 31, 2012, the Company had approximately $1.7 million and $1.1 million, respectively, of unproved oil and gas properties not subject to depletion.&amp;#160;&amp;#160;The costs not subject to depletion relate to unproved properties that are excluded from amortized capital costs until it is determined whether or not proved reserves can be assigned to such properties.&amp;#160;&amp;#160;The excluded properties are assessed for impairment at least annually.&amp;#160;&amp;#160;Subject to industry conditions, evaluation of most of these properties and the inclusion of their costs in amortized capital costs is expected to be completed within five years.&lt;/font&gt;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block;"&gt;&amp;#160;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;The Company capitalized overhead applicable to acquisition, development and exploration activities of approximately $234,000 and $275,000 for the six months ended June 30, 2013 and 2012, respectively.&lt;/font&gt;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block;"&gt;&amp;#160;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;Depletion expense related to oil and gas properties for the three and six months ended June 30, 2013 was approximately $642,000, or $0.88 per equivalent Mcfe, and approximately $1.2 million, or $0.90 per equivalent Mcfe, respectively. For the three and six months ended June 30, 2012, depletion expense was approximately $826,000, or $1.28 per equivalent Mcfe, and approximately $1.8 million, or $1.36 per equivalent Mcfe, respectively.&lt;/font&gt;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt;"&gt;&amp;#160;&lt;/div&gt;
&lt;div style="text-align: justify; text-indent: 0pt; display: block;"&gt;&lt;font style="display: inline; font-family: times new roman; font-size: 10pt;"&gt;An oil and natural gas property ceiling test impairment of approximately $9.9 million and $15.4 million was recognized for the three and six months ended June 30, 2012, respectively.&amp;#160;&amp;#160;Depreciation and amortization expense related to furniture and fixtures, computer hardware and software and other equipment for the six months ended June 30, 2013 and 2012 was approximately $59,000 and $48,000, respectively.&lt;/font&gt;&lt;/div&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 360

 -SubTopic 10

 -Section 50

 -Paragraph 1

 -URI http://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 360

 -SubTopic 10

 -Section 50

 -Paragraph 2

 -URI http://asc.fasb.org/extlink&amp;oid=6391110&amp;loc=d3e2921-110230



Reference 3: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 205

 -SubTopic 20

 -Section 50

 -Paragraph 1

 -URI http://asc.fasb.org/extlink&amp;oid=6360339&amp;loc=d3e1361-107760



Reference 4: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 210

 -SubTopic 10

 -Section S99

 -Paragraph 1

 -Subparagraph (SX 210.5-02.13-14)

 -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682



</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Property and Equipment</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>Property and Equipment</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.cng.com/role/DisclosurePropertyAndEquipment</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
