I've got a question. When a haynesville shale well has depleted its' production is it a done deal or does the shale characteristics allow for a "refracing" from the same well at a different angle or different depth? I have heard a lot about "porosity" and with shale not having the porosity of a sand formation I was wondering where it wasn't fraced if the gas would remain trapped. Any expert opinions on this would be greatly appreciated. Thanks and have a great day!

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The video is for a Cotton Valley well, I believe.
Yea, they said East Texas CV sandstone trend I believe.
You never recover all of the oil or gas. Never. There are new technologies that can boost recovery, but you still can't get it all, esp in an impermable rock like shale. Its like a spone with many tiny holes, you can squeeze it as much as you want, but it will always still have some water in it, the shale is the same, there is always some gas trapped inside the tiny pores in the shale. The newer better multistage frac tech combined with horizontal drilling are what make any significant recovery possible.
Hey Baron'
My premise was based on the additional lateral at a different depth. Not squeezing a sponge but throwing another sponge in the water.If not for the advancements in multi stage frac tech and horizontal drilling, that have been made in the last ten years or so, the Haynesville wouldnt even be a viable option right now. I certainly hope we havent peaked on technological advances in terms of research and development for these shale plays ( the future plays as well ). It would be a waste to leave 70% of OGIP underground & out of reach, IMO.

P.S. Would you care to take a stab at how much shale is disturbed through the thickness of the lateral upon fracturization ?
I agree that additional laterals at diffrent depths may be used to good effect, however, i have not seen enough real data to get an idea of how much shale is disturbed vertically in the thickness along the lateral.
I also believe that technology and the methods to employ exisitng technolgy are always improving.
But.....Just because you can extract more oil or gas with a new technology does not mean it is a commercially viable method. In the end anything done has to have the expectation that the results will justify the expense.
Point taken. But if an additional lateral can be deepened, or made shallower, from the same formation that was untouched by previous frac, wouldnt that be about the most economical process ever if it produced results as well as the first lateral. Assuming that the first frac/payout was worth trying to repeat. Cementing up and drilling another 5000' lateral. Would certainly save some time for those big, hungry, costly, triple decker rigs.

I could see where it may be somewhat riskier with a previous mulistage frac already above or below your next frac job. Especially with the difficulties that already exist with the job of fracing.
Thanks Mmmarkkk for your answer. I had always been thinking vertically and not radially. Let's hope you are right about the 40 acre spacing which means more wells and more $. Have a great day!

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