ORCID

Abstract

For over 50 years bridge plugs and cement have been used for well abandonment, work over, and are still the material of choice. However, the failures of cement abandonments using bridge plugs has been reported on many occasions, some of which have resulted in fatal consequences. A new patented product is designed to address the shortcomings associated with using bridge plugs and cement. The new developed tools use an alloy based on bismuth that is melted in situ using Thermite reaction. The tool uses the expansion properties of bismuth to sea the well. Testing the new technology in real field under more than 2km deep sea water can be expensive. Virtual simulation of the new device under simulated thermal and mechanical environment can be achieved using nonlinear finite element method to validate the product and reduce cost. Experimental testing in the lab is performed to measure heat generated due to thermite reaction. Then, a sequential thermal mechanical explicit/implicit finite element solver is used to simulate the device under both testing lab and deep water conditions.

DOI

10.1016/j.petrol.2015.05.010

Publication Date

2015-06-11

Publication Title

Journal of Petroleum Science and Engineering

Volume

133

First Page

192

Last Page

200

ISSN

0920-4105

Organisational Unit

School of Engineering, Computing and Mathematics

Keywords

Finite Element, Thermal, Oil well, Melting, Seal, Thermite

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