Geosteering—Are We there Yet? Part 2

My last post on geosteering took a high-level look at wellbore placement across unconventional basins. In closing I promised to next look at some problematic areas—places where out-of-zone wellbore placement occurred at a higher rate than in well-controlled areas, like the Central Basin Platform, Mid-Continent, or the Midland Basin.   Let’s start by asking the question a few questions: Does being out of zone matter? Is production impaired by landing less lateral than planned in your target zone?   Since I called the DJ Basin problematic, and I received several comments from folks who are actively placing wells in the DJ, and who reinforced the idea that structural complexity causes the out-of-zone problems, I thought we’d start there.   Of the wells in our Play Assessments app that have targeted the Niobrara B as a landing zone, and for which we have directional surveys, nearly 28% have been characterized as having less than 75% of the wellbore in zone.   Compare the map below—colored by Peak Oil rates—of the wells in the Niobrara B that have 75% or more of the lateral in zone … … with this map of the Niobrara B of wells with less than 75% of… continue reading

Continue reading Geosteering—Are We there Yet? Part 2. This article appeared first on CTRM Center.

Source: CTRM Center

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