Abstract
Production via multi-fractured horizontal wells with specific spacing units is a common development plan in shale plays.Commonly,operators drill and complete a single well in order to hold a 1280-acre spacing unit and once the acreage is secured across the asset,infill wells at each spacing unit are drilled so,depletion from the original(parent)well can be observed within the spacing unit.This will increase the likelihood of existing wells to experience inter-communication when infill wells are hydraulically fractured which has detrimental effects.Hence,understanding the effects of well timing and spacing on the performance of the overall spacing unit is critical to choose an appropriate development plan.In this regard,rate transient analysis(RTA)is an effective way to quantify the impact of offset frac-hits,hinting the changes in reservoir properties such as stimulated reservoir volume(SRV)and well productivity.In this real-world study,we used pseudo normalized pressure versus material balance square root of time plots to determine the impact of offset frac-hits on existing wells in Williston Basin,ND.The slope of the superposition time plot is inversely proportional to the product of the contacted surface area(AJ and the square root of reservoir permeability(Vk),A
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