...Abstract Proper maintenance of pipelines reduces the occurrences of failures due to internal corrosion to a remarkable degree. Primarily, the two methods employed in maintaining a pipeline are mechanical cleaning (pigging) and chemical treatment, (corrosion inhibitors & biocides) often used...

... more detail studies to identify the source of the solids and mitigate the threat. As immediate action, several measures were implemented (optimizing pigging frequency, changing pig design and the use of batch chemical). Meanwhile, a detailed study was conducted to eliminate the source of solids, which...

...Corrosion Management Framework Threats Barriers Corrosion Monitoring High sour high pressure Pipelines Non-intrusive technology Corrosion Inhibitor Pigging INTRODUCTION The Corrosion Management Framework is a means of implementing the corrosion control strategy, ensuring feedback between...

...RESULTS AND DISCUSSION Characterization of bioreactors before corrosion mitigation (baseline conditions) Abstract Although microbiologically influenced corrosion (MIC) in pipelines is challenging to mitigate, it is generally accepted that pigging, a mechanical cleaning process that removes water...

... estimations, solids and fluids in contact with solids received from the pigs should be used for inoculation of vials. Barnett Gathering, L.L.C In 2005, Barnett Gathering, L.L.C (Barnett Gathering) had no formalized pipeline integrity plan in place with a total of five employees, three compressor stations...

... and then allowed to cool, followed by hand kneading until smooth. Laser Scanning Experimental Setup Pipeline Cleaning Pigs In the first phase of this project, fifteen (15) pigs were acquired from a total of eight (8) suppliers. These pigs were specified to be sized for a 102 mm (4”) nominal diameter pipe...

...Inline inspection (ILI) is a popular method used for inspecting offshore pipelines and involves the inspection of a pipeline from its interior by the deploying a device capable of detecting and sizing metal loss defects by one or more NDT techniques. Some pipelines are designed with pig launch...

..., contributing to the corrosion protection. The corrosion caused by the casing gas was aggravated further by the injection of inhibited methanol for freeze protection purposes. A corrosion mitigation program was implemented that included regular pigging, the application of a corrosion inhibitor, a corrosion...

... handles High Pressure (HP) Gas in the North and West jurisdiction of the Company and accounts for about 17% of the entire Network. Based on internal corrosion monitoring results and corrosion product analysis, more frequent cleaning pigging has been initiated on selected pipelines. Corrosion inhibitor...

... cleaning pig (see Figure 2 ), consisting of a steel wire brush to effectively remove soft to medium-hard deposits from internal pits. Baseline corrosion rate measurements were also taken. The chemical treatment program started in June 2009 and is still ongoing today. Mechanical Scraping with a Cleaning...

..., magnetotatic SRB bacteria and pitting. Under deposit corrosion pits MIC Sulfate reducing bacteria MFL ILI pigging debris matrix biocides ferromagnetic magnetotatic bacteria INTRODUCTION Hunt Crude Oil Supply ⁽¹⁾ (asset owner) operates approximately 300 miles of 8, 10, 12, and 14 inch...

... to another drill site was taken out of service in June 2005 because of extensive internal corrosion. Subsequently, an aggressive in-line inspection (ILI or smart pigging) campaign indicated corrosion damage of varying extent and severity in the 47 water injection lines field-wide. Abstract To enhance asset...

... sulfide (H₂S) was detected ahead of the pig used to displace the seawater from the trunkline to an awaiting barge. When the 18 inch (45.7 cm) lateral was dewatered two months later, a similar approach was employed – pushing the dewatering pig from the new connection at the trunkline back...

... pigging K90941 S32100 stainless steel S34700 stainless steel INTRODUCTION The refinery coking process is essentially a way to upgrade heavy oil (called “resid”) into lighter products that have higher value. Resid typically consists of a mixture of crude unit vacuum tower bottoms, FCU fractionator...

...Abstract Experience with Black powder in pipelines on the Norwegian Continental Shelf (NCS) is limited to a few pipelines. The cleaning of one of the pipelines has recently started and the analysis of the dust is on-going. Pipeline cleaning or operational pigging is a part of the maintenance...

... Inspection (ILI) pigs, and causing damage to customer equipment. However, black powder may not be a problem until it starts to move due to fluid velocity. The velocity to cause movement of dry black powder in pipelines is presented for black powder in gas pipelines. Once black powder starts to move...

...This first post-Ike pig run through the 30” (76.2 cm) line was quickly followed by running a 16” (40.6 cm) pig from an upstream platform, which was not affected by Hurricane Ike, along with a small volume of methanol to prevent hydrate formation. When that pig entered the 30” (76.2 cm) trunkline...

... in movement of large quantities of solids, which can plug filters and damage downstream equipment. Pigging to clean a pipeline may also loosen solids adhering to a pipe wall, freeing them up to travel great distances down a pipeline. One important result of these calculations is that once a particle begins...

... fuel created during the pigging process, (3) working with large material and components in confined areas, (4) pump capacities and capabilities during the cleaning and smart pigging, and (5) project scheduling to meet the fleet demand at Naval Station Pearl Harbor, Hawaii. Red Hill pigging pig...

... 135 3,0 40 7.2 7 2480 135 no defect no defect 8.1 8 2630 315 4,0 40 8.2 8 2720 315 4,0 50 non-destructive testing in-line inspection pipelines pigging ultrasonics crack detection circumferential defects Prior to the inspection the tool settings are programmed according...