Abstract:The Granite Wash formation in Beckham County, Oklahoma and surrounding areas presents a number of unique challenges in drilling the build section from a vertical openhole to form a horizontal lateral in the productive zone. The formation is hard and abrasive and it is difficult to anticipate rock properties downhole from one well to the next. The erratic nature of the formation results in unpredictable performance by the steerable drilling assembly and drill bits particularly in the build section below 12,000 … Show more
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