Real-time electronic monitoring of a pitted and leaking gas gathering pipeline

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · Mater. Performance; (United States)

OSTI ID:7198661

Asperger, R G; Hewitt, P G

Hydrogen patch, flush electrical resistance, and flush linear polarization proves wre used with flush coupons to monitor corrosion rates in a pitted and leaking sour gas gathering line. Four inhibitors were evaluated in stopping the leaks. Inhibitor residuals and the amount and ratio of water and condensate in the lines were measured at five locations along the line. The best inhibitor reduced reduced the pit-leak frequency by over a factor of 10. Inhibitor usage rate was optimized using the hydrogen patch current as a measure of the instantaneous corrosion rate. Improper pigging was identified as a cause of corrosion transients. This problem is discussed in relation to the pigging of pipelines in stratified flow where moving fluids are the carriers for continuously injected corrosion inhibitors.

• Research Organization: Petrolite Corp., St. Louis, MO 63119
• OSTI ID: 7198661
• Journal Information: Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 25:8; ISSN MTPFB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
CHEMICAL REACTIONS
CLEANING
CONDENSATES
CONSUMPTION RATES
CONTROL SYSTEMS
CORROSION
CORROSION INHIBITORS
ELECTRIC CONDUCTIVITY
ELECTRIC PROBES
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN
HYDROGEN COMPOUNDS
LEAK DETECTORS
LEAKS
MONITORING
NATURAL GAS
NONMETALS
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PIPELINES
PITTING CORROSION
POLARIZATION
PROBES
REAL TIME SYSTEMS
TRANSPORT
WATER