| EPSRC Reference: |
GR/R35780/01 |
| Title: |
An electromagnetic telemetry system for offshore oil and gas exploitation in underbalanced drilling |
| Principal Investigator: |
Rodger, Professor D |
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| Department: |
Electronic and Electrical Engineering |
| Organisation: |
University of Bath |
| Scheme: |
LINK |
| Starts: |
01 September 2001 |
Ends: |
31 August 2004 |
Value (£): |
209,710
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Summary on Grant Application Form |
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North Sea reserves are becoming a mature resource. Almost thirty years have passed since the first production came ashore. As a result, fluid pressures in the reservoirs are becoming increasingly depleted and low pressure (underbalanced) drilling should be used. This means that traditional mud pulse methods of communication with the bottom of the well, necessary for instance for horizontal drilling, geosteering and pressure monitoring are severely compromised.Electromagnetic (EM) telemetry techniques are an attractive alternative to mud pulse but this technique suffers from a number of problems such as blind spots, depth limitations and in addition, has never been used offshore.EM telemetry involves the use of a downable generator, which produces an electrical signal. This signal can be detected at the surface as a very small voltage drop between the drill string and an electrode placed in the ground a few feet away. The signalling system depends on the voltage drop being detectable in the presence of the ambient electromagnetic noise. The prediction of this voltage drop at different depths, formation resistivity and frequency is therefore crucial and involves the solution of an electromagnetic field problem in three dimensions.The aim of the project is to develop numerical models of EM telemetry in order to improve the system to the point where it can be used in the North Sea.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.bath.ac.uk |