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Keywords: pressure variation
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Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, October 29–30, 2020
Paper Number: SPE-200518-MS
... Summary This paper describes measured and simulated downhole pressure variations ("surge and swab") during drill pipe connections when drilling an ultra-deepwater well offshore Brazil on the Carcará field. Floating rig motion caused by waves and swell ("rig heave") induces surge and swab when...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations, March 28–29, 2007
Paper Number: SPE-108346-MS
... Abstract One of the main limitations in deep water drilling and drilling in depleted reservoirs is the low margin between the fracture and the pore pressure gradients. Drillstring tripping causes additional pressure variations in the borehole. The use of a Mobile Offshore Drilling Unit (MODU...
Proceedings Papers

Paper presented at the IADC/SPE Underbalanced Technology Conference and Exhibition, March 25–26, 2003
Paper Number: SPE-81634-MS
... pressure estimation production control ensemble kalman filter production monitoring reservoir pressure pressure variation drillstem/well testing kalman filter estimation reservoir property reservoir characterization drilling downhole pressure vector upstream oil & gas covariance matrix...

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