New technique monitors pipeline corrosion cracking

The Field Signature Method (FSM), a new technique for monitoring the condition of an in-service pipeline, continuously monitors corrosion taking place at a given point on the pipeline and remaining pipe wall thickness at any time. The technique, which has been field tested on a flow line on Shell Ex...

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Bibliographic Details
Published in:The Oil & gas journal 1993-12, Vol.91 (52), p.88-92
Main Author: STROMMEN, R. D
Format: Magazinearticle
Language:English
Subjects:
02 PETROLEUM
03 NATURAL GAS
032000 > Natural Gas-- Transport, Handling, & Storage
Advantages
Applied sciences
Cathodic protection
Corrosion
Crude oil, natural gas and petroleum products
DATA ANALYSIS
Electrodes
Energy
Exact sciences and technology
Field tested
Fuels
Innovations
MATERIALS TESTING
Methods
NONDESTRUCTIVE TESTING
Oilfield equipment & services
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
PATTERN RECOGNITION
PERFORMANCE TESTING
Petroleum industry
PIPELINES
Pipes
Probes
REMOTE SENSING
TESTING 022000 > Petroleum-- Transport, Handling, & Storage
Transportation and distribution of crude oils and liquid petroleum products. Ships. Pipelines. Terminals. Service stations
Values
VDTs
Video display terminals
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Description
Summary:The Field Signature Method (FSM), a new technique for monitoring the condition of an in-service pipeline, continuously monitors corrosion taking place at a given point on the pipeline and remaining pipe wall thickness at any time. The technique, which has been field tested on a flow line on Shell Expro's Dunlin A North Sea platform, combines the advantages of corrosion probes and of non-destructive testing inspection by being highly sensitive and responding to changes in corrosion of the actual pipe wall. FSM reduces costs, improves safety, and may reduce the required frequency of intelligent pigging. The method requires virtually no maintenance or replacement of consumables. FSM was developed and patented by the Center for Industrial Research in 1985-1986. The method is based on feeding an electric direct current through the selected sections of the structure to be monitored and sensing the pattern of the electrical field by measuring small potential differences set up on the surface of the monitored object.
ISSN:0030-1388
1944-9151