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Keywords: borehole breakout
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Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47237-MS
... Abstract Analysing borehole breakouts is a well known method for obtaining horizontal stress directions. In this study dipmeter data from 46 wellbores in the Tampen area in the northern North Sea were analyzed for breakouts. The analysis identified a large problem of differentiating borehole...
Proceedings Papers

Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, July 8–10, 1998
Paper Number: SPE-47282-MS
... stress, which reduces the difference between the principal stresses perpendicular to the borehole, and results in a minimum stress concentration around the borehole. Such guidelines are based on an effort to reduce the required borehole pressure to maintain zero breakout. Research on borehole breakout...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28050-MS
... Abstract Laboratory testing of granite blocks containing a circular borehole was carried out with uniaxial and biaxial loading conditions, and with borehole diameters ranging from 5 to 103 mm. Borehole breakouts were also investigated in situ using borehole diameters ranging from 75 to 3500...
Proceedings Papers

Paper presented at the Rock Mechanics in Petroleum Engineering, August 29–31, 1994
Paper Number: SPE-28072-MS
.... 1 INTRODUCTION Borehole breakouts have been used for many years as an indicator of the in-situ stress field (e.g., Bell and Gough, 1983; Shamir and Zoback, 1992). Although the orientation of such breakouts can be used to determine the in-situ stress tensor orientation in the case of a hole drilled...

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