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Keywords: pressure oscillation
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Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194143-MS
... with narrow pressure windows, but rig heave is a challenge when drilling from floating drilling units. Rig heave, caused by sea waves, induces pressure oscillations downhole that may exceed the operational pressure window. These oscillations are called "surge & swab" and occur both during tripping...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2018
Paper Number: SPE-189657-MS
... Abstract In this paper, a new tool to be placed in the bottomhole assembly (BHA) is introduced for the purpose of counteracting heave-induced down-hole pressure oscillations in offshore drilling. The tool contains a control choke, sensors and computing capability, and will operate autonomously...

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