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Title: Strategic petroleum reserve corrosion: site-specific aspects and failure analysis of corroded pipes from the Bryan Mound site

Abstract

This report covers the site-specific aspects of corrosion in the SPR program. The most noteworthy observation was that large differences in the conditions exist from site to site. Some sites should have relatively minor corrosion problems, whereas other sites at which deep caverns and acidic groundwaters exist may have severe corrosion problems. Laboratory tests of aerated brines have shown unacceptably high corrosion rates which may lead to failures long before the anticipated lifetime of various components is reached. The high corrosion rates may be reduced to tolerable levels by the use of SO/sub 2/ to deoxygenate the brine. However, the possible reduction of sulfates by anaerobic sulfate-reducing bacteria may lead to even more severe sulfide corrosion. No SO/sub 2/ injection is recommended until suitable tests refute the sulfide corrosion problem. Rust samples from three types of pipes from the Bryan Mound depository and a piece of a severely corroded (completely perforated) pipe were subjected to x-ray energy dispersive analyses and failure analysis at Sandia Laboratories. Service histories of the pipes were unknown except the 5-1/2 in. pipes were stated to have carried brine at 100/sup 0/F. Two large pipes showed minimal corrosion and were characterized by loose, flaky rust whichmore » contained traces of some foreign elements such as calcium, silicon, chlorine which could be attributed to either dissolved species in near-surface groundwaters or cement which coated the 11'' pipe. These pipes were guessed to have been casings, and it was concluded that they were probably not exposed to sulfur-bearing waters. The 5-1/2 in. brine pipe was of very poor quality steel and was analyzed in detail. It was concluded that the brine was extremely corrosive and led to the extensive corrosion observed. Although the pipe was used many years ago, the same conditions may prevail and could lead to serious problems.« less

Authors:
Publication Date:
Research Org.:
Sandia Labs., Albuquerque, NM (USA)
OSTI Identifier:
5931054
Report Number(s):
SAND-79-1469
DOE Contract Number:
EY-76-C-04-0789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 36 MATERIALS SCIENCE; BRINES; CORROSIVE EFFECTS; PIPES; CORROSION; STRATEGIC PETROLEUM RESERVE; WELL CASINGS; CORROSION PRODUCTS; FAILURES; STEELS; ALLOYS; CHEMICAL REACTIONS; IRON ALLOYS; IRON BASE ALLOYS; RESERVES; RESOURCES; 024000* - Petroleum- Storage- (-1989); 360105 - Metals & Alloys- Corrosion & Erosion

Citation Formats

Douglass, D.L. Strategic petroleum reserve corrosion: site-specific aspects and failure analysis of corroded pipes from the Bryan Mound site. United States: N. p., 1979. Web.
Douglass, D.L. Strategic petroleum reserve corrosion: site-specific aspects and failure analysis of corroded pipes from the Bryan Mound site. United States.
Douglass, D.L. Sat . "Strategic petroleum reserve corrosion: site-specific aspects and failure analysis of corroded pipes from the Bryan Mound site". United States. doi:.
@article{osti_5931054,
title = {Strategic petroleum reserve corrosion: site-specific aspects and failure analysis of corroded pipes from the Bryan Mound site},
author = {Douglass, D.L.},
abstractNote = {This report covers the site-specific aspects of corrosion in the SPR program. The most noteworthy observation was that large differences in the conditions exist from site to site. Some sites should have relatively minor corrosion problems, whereas other sites at which deep caverns and acidic groundwaters exist may have severe corrosion problems. Laboratory tests of aerated brines have shown unacceptably high corrosion rates which may lead to failures long before the anticipated lifetime of various components is reached. The high corrosion rates may be reduced to tolerable levels by the use of SO/sub 2/ to deoxygenate the brine. However, the possible reduction of sulfates by anaerobic sulfate-reducing bacteria may lead to even more severe sulfide corrosion. No SO/sub 2/ injection is recommended until suitable tests refute the sulfide corrosion problem. Rust samples from three types of pipes from the Bryan Mound depository and a piece of a severely corroded (completely perforated) pipe were subjected to x-ray energy dispersive analyses and failure analysis at Sandia Laboratories. Service histories of the pipes were unknown except the 5-1/2 in. pipes were stated to have carried brine at 100/sup 0/F. Two large pipes showed minimal corrosion and were characterized by loose, flaky rust which contained traces of some foreign elements such as calcium, silicon, chlorine which could be attributed to either dissolved species in near-surface groundwaters or cement which coated the 11'' pipe. These pipes were guessed to have been casings, and it was concluded that they were probably not exposed to sulfur-bearing waters. The 5-1/2 in. brine pipe was of very poor quality steel and was analyzed in detail. It was concluded that the brine was extremely corrosive and led to the extensive corrosion observed. Although the pipe was used many years ago, the same conditions may prevail and could lead to serious problems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 1979},
month = {Sat Sep 01 00:00:00 EDT 1979}
}

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  • This report describes nekton communities off Freeport, Texas prior to brine disposal based on trawl studies in the period October 1977 to February 1980. Trawling was conducted aboard chartered commercial shrimp trawlers along a transect in depths of 3 to 25 fathoms to describe the general background of nekton communities off Freeport. An array of stations were occupied at the diffuser site in 12 fathoms of water to describe in detail nekton communities near the diffuser. Collections at each station, in general, were made once a month during the day and once a month at night, cruises being about twomore » weeks apart in time. Projected diffuser locations, stations occupied, etc., changed during the course of the project, and the Materials and Methods (Section 4.2) should be consulted for details.« less
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