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Permalink Reply by Les Bamburg on January 11, 2011 at 4:15

ETH, this will require separate wells for the Cotton Valley formation - both the vertical section and horizontal lateral.

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Permalink Reply by Terry L. Antee on January 11, 2011 at 4:49

Les they were doing stacked horizontals in the james. A geologist friend of mine and they were doing three.

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Permalink Reply by Les Bamburg on January 11, 2011 at 7:40

Terry, James Lime is a completely different animal (same for the Austin Chalk) as those probably were not multi-stage frac'ed laterals.  Can your geologist friend provide the well API numbers or some other identifying information. 

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Permalink Reply by easttxhaynesville on January 11, 2011 at 5:52

Hey les tha ks for they reply when they stack them how does that impact well spacing if at all

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Permalink Reply by Les Bamburg on January 11, 2011 at 7:43

ETH, generally there is no impact on well spacing especially if the formations are in different units.  For the Haynesville Shale and Bossier Shale there are special rules to address the well spacing problem since both formations are typically included in the same unit. 

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Permalink Reply by Terry L. Antee on January 12, 2011 at 5:31

Les the wells were drilled by Elloria and Trindad was the contractor. I will ask the geologist.

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Permalink Reply by Les Bamburg on January 12, 2011 at 11:26

Terry, I did a little checking and there have been wells drilled in Shelby County drilled into the E Bridges (James Lime) field with as many as four stacked laterals in a single well.  Because the depth is only ~ 6000 ft and the laterals are not multi-stage frac'ed this is technically feasible.  Again, very similar to the Austin Chalk wells that up to 6-8 horizontal laterals per well.  By the way, all the laterals are drilled into the same formation with very little vertical separation between laterals.

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