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landownerPermalink Reply by Big Daddy, bcnr on June 1, 2010 at 13:57

Do you have a well serial number? Vertical depth is just that; the vertical leg only. Total depth includes the vertical leg, the horizontal lateral and the curve that transitions the two. On newly permitted wells, this may change a bit. Normally these are proposed numbers but based on all the engineering that goes into a well before a bit touches the ground, they will try to hold these depths to reach to targeted shale. I'm not an engineer, geologist, or a rig foreman, but I did sleep in a Holiday Inn Express once. Take it for what it's worth.

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Oil & Gas ProPermalink Reply by Skip Peel - Mineral Consultant on June 1, 2010 at 14:11

The TVD and the MD are permit depths which identify the well as a horizontal. In the permit both are approximations that will be amended after the well is drilled.

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landownerPermalink Reply by smith1 on June 1, 2010 at 14:15

thanks very much

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landownerPermalink Reply by Big Daddy, bcnr on June 1, 2010 at 14:23

Yeah, what he said.

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Permalink Reply by Etta Foster on June 2, 2010 at 8:41

By definition the difference between TVD and MD:

http://www.glossary.oilfield.slb.com/Display.cfm?Term=true%20vertic...

http://www.glossary.oilfield.slb.com/DisplayImage.cfm?ID=365

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landownerPermalink Reply by smith1 on June 2, 2010 at 9:03

why thanks, that really helps, appreciate everyone

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