<HTML>
<HEAD>
<TITLE>Stark Reality Horizon Tools Plugin</TITLE>
</HEAD>
<BODY>
<FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>All,<BR>
<BR>
Stark Reality will soon be releasing a Horizon Tools plugin in OpendTect v3.2. A preliminary release of this commercial plugin will be available before the end of 2008, with the first full release in late January or early February 2009.<BR>
<BR>
Those purchasing a license to this commercial plugin before the end of 2008 will receive a 40% discount and a year of maintenance releases.<BR>
<BR>
The first release of "Stark Reality Horizon Tools" will be accessible from the “Utilities” menu and will contain the following options:<BR>
</SPAN></FONT><UL><UL><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Dip, Azimuth, and friends
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Spatial Smoothing
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Residual Structure
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Horizon Closure - Simple
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Horizon Closure - Advanced <BR>
</SPAN></FONT></UL></UL><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'> <BR>
All of these options take an existing horizon and place the results in either a new horizon, or as surface data under the input horizon. <BR>
<BR>
The closure calculation is the most novel part of this plugin, however the spatial smoothing and residual structure options include a proprietary fast smoothing option. The compute effort of this fast smoothing routine is mostly independent of the size of the smoother. For example, a 31 by 31 box-car takes about the same time than a 3 by 3 box-car. <BR>
<BR>
The closure calculation methods makes use of a “Spill or Seal” model. In this model, certain points on the horizon are classified as either Spill points or Seal points. The routine uses these designations to determine the trapping potential of the horizon. It outputs several closure attributes as surface data. The current closure attributes are:<BR>
</SPAN></FONT><UL><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Number – Each connected closure found on the horizon is automatically assigned a unique number
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>SSLC – denotes points that Spill, Seal, Leak or are part of a Closure.
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Max Column Height – vertical distance from deepest contour to top of the closed structure
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Local Column Height - vertical distance from current contour to top of the closed structure
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Area – represents the spatial extent of entire closure
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Contour area – represents spatial extent of each closed contour
</SPAN></FONT><LI><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Cumulative area – represents spatial extent of each closed contour and those above it<BR>
</SPAN></FONT></UL><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'><BR>
The “Horizon Closure – Simple” option creates a set of “pessimistic” and “optimistic” closure attributes based on the automatic placement of the Spill and Seal points. In the “Horizon Closure – Advanced” the user will have more control over how the Spill and Seal points are determined. In a future release, a “Horizon Closure – Expert” option will allow the user to provide a map of their Spill and Seal points and/or adjust the quality of the seal based on trapped column height. Additional closure attributes and functionality will be added to meet user requests.<BR>
<BR>
The longer term goal is to use the closure calculation routines to create closure attribute volumes, instead of just closure attribute surfaces. The input for such a routine could either be an Age Volume or the horizons generated by SSIS.<BR>
<BR>
Any one interested in more information on this plugin please reply to <FONT COLOR="#0000FF"><U>starkreality@verizon.net</U></FONT> <BR>
<BR>
Sincerely,<BR>
<BR>
Tracy J. Stark<BR>
STARK Research / Stark Reality, Inc.<BR>
<BR>
</SPAN></FONT>
</BODY>
</HTML>