Southwest Research Institute To Open Corrosion-Testing Facility
Southwest Research Institute (SwRI) will open a new testing facility in April, offering standard corrosion testing for oil and gas clients. Located on the Institute’s San Antonio, Texas, campus, the facility will be used primarily to test the sulfide stress cracking resistance of carbon steel alloys for oil wells and offshore drilling applications.
“Previously, our laboratory work has been predominantly fit-for-purpose testing,” Elizabeth Trillo, one of the leaders of the project, said. “Those tests simulate an environment with specific solutions, temperatures, and pressures to evaluate materials used in specific drilling environments and determine whether they can withstand those conditions. Every test is different, but our specialty is catering to the client’s end-use need.”
The goal of the facility is to provide cost-effective standardized testing as a part of SwRI’s comprehensive oil and gas sour corrosion testing portfolio.
“Few industries operate under such harsh conditions,” Trillo said. “For this facility, we’ll mainly be looking at carbon steel materials used as casings in downhole drilling applications with high hydrogen sulfide levels.”
In drilling, the casing is a large pipe inserted into the earth to protect the equipment and support the wellstream. It is usually held in place with cement and endures massive amounts of pressure, high temperatures, and corrosive liquids. To withstand this environment, durable, lasting materials are necessary.
The National Association of Corrosion Engineers (NACE International) has developed particular tests and standards for materials used in the oil and gas industry. NACE standard test method TM0177 “Laboratory Testing of Metals for Resistance to Sulfide Stress Cracking and Stress Corrosion Cracking in H2S Environments” is widely used to qualify material performance in oilfield environments.
“We’ve typically designed new test methods that give us flexibility and control over individual environmental parameters,” said James Dante, manager of SwRI’s Environmental Performance of Materials Section. “This new facility will provide us with the ability to perform repetitive TM0177, NACE A testing in a cost-effective and repeatable manner while providing our clients with the same level of service they have experienced with more complex testing.”
SwRI is in the final stages of building the laboratory, which is dedicated to the NACE A standard test method in TM0177. The facility will house multiple test cells allowing triplicate samples to be run on different materials. The proof ring cell assemblies are all housed within a customized glove box with nitrogen flow to ensure oxygen levels stay below 10 parts per billion.
“Previously, a sample would be grouped with several others and might fail early on in a 30-day test,” Senior Engineering Technologist Steve Clay said. “That could be challenging, because there was no way to initiate new tests without disturbing the other samples still under test. One of the benefits of this new facility is we’re able to test samples in isolated test cells giving us the ability to change samples without disturbing other samples still under test.”
As a matter of standard practice, the team will provide photographs of any cracks that occur during testing and will also report online environmental testing conditions including temperature and oxygen content.
Click here for more information.
Corrosion Will Occur, Whether You Like It or Not
Just like Houston’s summer heat, corrosion of metal surfaces will occur—whether you like it or not. To help you better understand corrosion, these papers describe using water surveys in a production/injection plant, testing the effectiveness of mitigation, and data evaluation using machine learning.
HDPE Liner in Carbon Steel Pipe Manages Flowline Corrosion in Giant Onshore Field
Internal corrosion has caused ADNOC to suffer loss of containment in oil flowlines in a giant onshore field. This paper describes the successful 5-year field trial program and confirmation that HDPE liner application in carbon steel pipe can be a cost-efficient way to mitigate internal corrosion.
Water Survey Assesses Souring and Corrosion at Production/Injection Plant
At a water treatment plant for an onshore oil field in northern Germany, formaldehyde injection was started in 2015 as a biocide. The goal of this study was to understand the chemical parameters and microbial distribution in the water system and whether formaldehyde injection was effective.
Don't miss out on the latest technology delivered to your email every two weeks. Sign up for the OGF newsletter. If you are not logged in, you will receive a confirmation email that you will need to click on to confirm you want to receive the newsletter.
09 September 2019
09 September 2019
10 September 2019
11 September 2019
12 September 2019