Blackswan..read this it says it all basically..the lower fracs damaged the well so cant be re entered..talis had already did a pre drilled cellar on the same pad..less cost!..the lower formation sle knew held more gas ...........from rns
Following the highly-encouraging testing results from the Lewino-1G2 vertical well, San Leon is preparing to drill a 1,500 metre horizontal well with a multi-staged frac programme. Successful developments of shale in Poland will likely use wells of this design. Long horizontal multi-fracced wells have a number of advantages over vertical wells in terms, not only of higher production rates and recovery, but also of their physical ability to clean up after fraccing, and for that clean up to be performed in a far more economical manner.
The existing well pad and a pre-prepared drilling cellar will be utilised, reducing cost and time. San Leon already has good-quality 2D seismic across the Lewino area. Some seismic lines were deliberately acquired in the most likely direction for horizontal drilling based upon regional stress directions, meaning that the well will have seismic data coverage across its entire length. Limited faulting with relatively minor offsets is expected, and the trajectory has a very slight upward dip from heel to toe. Subject to operational feasibility, the existing Lewino-1G2 wellbore will be used as a downhole listening post for microseismic data acquisition during the multiple fracs in the horizontal well.
The final frac on Lewino-1G2 provided a step-change insight into the frac design which works in this play. Proppant was emplaced very easily, without any material increase in treatment pressure. This was in-line with the final frac design and provides scope for further modification and optimisation in future fracs. This gives us confidence that fracs can be designed in the horizontal well to cover the whole of the Ordovician net pay interval, and be kept open with high proppant concentrations. Design work continues, but it is likely that the horizontal well will be landed towards the top of the lower Ordovician, providing frac initiation in the optimal zone, while also accessing the upper Ordovician.
had minimal impact on a sustained recovery. Even with my hedged view I thought that maybe a slither of hope that this year isnt a total wet blanket like 2013. I wonder if Joel has his next speech prepared for market as some serious questions will be thrown his direction after his Sept 13 dross
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