Oil and Gas at Your Door? (2005 Edition) - Earthworks
Oil and Gas at Your Door? (2005 Edition) - Earthworks
Oil and Gas at Your Door? (2005 Edition) - Earthworks
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Glossary<br />
title opinion<br />
A st<strong>at</strong>ement of opinion by an <strong>at</strong>torney, often in the form of a letter, as to the st<strong>at</strong>e of the title to<br />
l<strong>and</strong>, minerals, royalty, or working interests.<br />
tract<br />
Any specific area of l<strong>and</strong>.<br />
trap<br />
A geological structure in which hydrocarbons build up to from an oil or gas field.<br />
U<br />
Underground Injection Control (UIC)<br />
A program required in each st<strong>at</strong>e by a provision of the federal Safe Drinking W<strong>at</strong>er Act (SDWA)<br />
for the regul<strong>at</strong>ion of injection wells. An applicant must demonstr<strong>at</strong>e th<strong>at</strong> the well has no reasonable<br />
chance of adversely affecting the quality of an underground source of drinking w<strong>at</strong>er<br />
before a permit is issued.<br />
unit<br />
The area covered by a unitiz<strong>at</strong>ion agreement.<br />
unitiz<strong>at</strong>ion<br />
This occurs when companies pool their individual interests in return for an interest in an overall<br />
unit, which could be all or some portion of a producing reservoir. The unit is then oper<strong>at</strong>ed<br />
by a single company on behalf of group. As contrasted to "pooling," unitiz<strong>at</strong>ion involves a group<br />
of wells in an area, r<strong>at</strong>her than the pooling of leases to cre<strong>at</strong>e an enough of an area to constitute<br />
a drilling unit for one well. It commonly occurs under secondary recovery oper<strong>at</strong>ions, when<br />
a number of producers in a field recognize the need to have a field-wide str<strong>at</strong>egy to increase<br />
overall production in the field.<br />
USGS<br />
Abbrevi<strong>at</strong>ion for United St<strong>at</strong>es Geological Survey.<br />
V<br />
viscosity<br />
The resistance th<strong>at</strong> a fluid has to n<strong>at</strong>ural flow. <strong>Oil</strong>'s viscosity is usually gre<strong>at</strong>er than an oil <strong>and</strong><br />
gas mixture.<br />
VOC<br />
Abbrevi<strong>at</strong>ion for vol<strong>at</strong>ile organic compound. VOCs are compounds th<strong>at</strong> have a high vapor pressure<br />
<strong>and</strong> low w<strong>at</strong>er solubility. VOCs include benzene, toluene, ethylbenzene <strong>and</strong> xylene;<br />
trichloroethylene; fuel oxygen<strong>at</strong>es, such as methyl tert-butyl ether (MTBE); <strong>and</strong> VOCs are often<br />
components of petroleum fuels, hydraulic fluids <strong>and</strong> paint thinners. VOCs are common groundw<strong>at</strong>er<br />
contaminants.<br />
voluntary pooling<br />
pooling of leased mineral tracts willingly undertaken by all the parties involved, both working<br />
interest owners <strong>and</strong> royalty owners.<br />
valve<br />
A device used to control the r<strong>at</strong>e of flow in a line to open or shut off a line completely, or to serve<br />
as an autom<strong>at</strong>ic or semiautom<strong>at</strong>ic safety device.<br />
Glossary-16
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