Borehole wall tensile caving instability in the horizontal well of deep brittle shale
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DOI: 10.1177/00368504211002330
Abstract: Introduction: With the increasing drilling depth of shale formation, downhole collapse is a frequent occurrence, which often manifests as borehole wall caving. Methods: We used the deep shale of the Longmaxi Formation to conduct the… read more here.
Keywords: acoustic velocity; borehole wall; wall; caving instability ... See more keywords