Concept

Casing (borehole)

Publications associées (10)

Flow Path Optimization for Soft Pneumatic Actuators: Towards Optimal Performance and Portability

Jamie Paik, Harshal Arun Sonar, Sagar Dattatray Joshi

Soft pneumatic actuators (SPAs) are highly desirable for interactive robotics applications owing to their unconventional properties like high compliance, safe human-machine interaction and adaptable design space. The SPA dynamic behaviour is governed by pn ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

Method and system for extending reach in deviated wellbores using selected vibration frequency

Pedro Miguel Nunes Pereira de Almeida Reis

A method for extending reach of a coiled tubing string in a deviated wellbore includes determining a frequency of vibration of the tubing string based on a function of the bending resonance of the tubing string and vibrating the tubing string at the determ ...

2018

Measurements of internal cracking in punching test slabs without shear reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz, Jürgen Einpaul

Advancing the knowledge about the punching behaviour of flat slabs has been held back by the fact that only indirect measurements of the internal failure mechanism have typically been available. In this paper, a novel experimental approach for tracking the ...

2018

The Role of Geological Barriers in Achieving Robust Well Integrity

Brice Tanguy Alphonse Lecampion

Wells play a key role in the reduction of greenhouse gas emissions. They are not only a critical element in ensuring the permanent trapping of carbon dioxide (CO2) in deep subsurface permeable formations, but they are also being recognized as an important ...

2017

Experimental Investigation of the Aeroelastic Stability of an Annular Compressor Cascade at Reverse Flow Conditions

Virginie Anne Chenaux

Compressor surge events are unsafe operating regimes yielding highly unsteady flow fields in which complex aeroelastic phenomena occur. If the blade flutter and forced response behaviour (i.e. aeroelastic stability) can be predicted reliably for normal flo ...

EPFL2012

Interface debonding as a controlling mechanism for loss of well integrity: Importance for CO2 injector wells

Brice Tanguy Alphonse Lecampion

The concept of CO2 storage relies on the long-term sealing properties of both the geological trap and the wells needed to inject and monitor CO2. Well integrity, a classical topic in the oil and gas industry, is thus critical for the performance of any CO2 ...

2011

Monitoring CO2 migration in an injection well: Evidence from MovECBM

Brice Tanguy Alphonse Lecampion

Carbon dioxide (CO2) geological storage relies on safe, long-term injection of large quantities of CO2 in underground porous rocks. Wells, whether they are the conduit of the pumped fluid or are exposed to CO2 in the storage reservoir (observation and old ...

2011

Stability of a leakage pathway in a cemented annulus

Brice Tanguy Alphonse Lecampion

The risk minimization of carbon dioxide (CO2) storage relies to some extent on well integrity assurance. While chemical reactions between the constitutive materials of the wellbore - such as cement - and stored CO 2 do not jeopardize the efficiency of a de ...

2011

Investigations of time dependent flow phenomena in a turbine and a pump-turbine of Francis type

Amirreza Zobeiri

The present work deals with time dependent phenomena, which develop in turbines and pump turbines of Francis type. These phenomena may cause serious damages to hydropower plant. The overall objective of this study is to bring a better understanding of two ...

EPFL2009

Method and system for extending reach in deviated wellbores using selected injection speed

Pedro Miguel Nunes Pereira de Almeida Reis

A method for extending reach of a coiled tubing string in a deviated wellbore includes vibrating the tubing string while the tubing string is injected into the wellbore at a first injection speed, finding the peak speed of lateral vibration of the tubing s ...

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