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Dead leg

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Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7715
... Abstract Internal corrosion in dead legs is a leading cause for failures in pipeline facilities such as pump stations, compressor stations, and terminals. Corrosion management of dead legs is challenging because they are generally unpiggable, difficult to chemically treat, and susceptible...
Proceedings Papers

Paper presented at the CORROSION 2015, March 15–19, 2015
Paper Number: NACE-2015-5573
... Abstract In the oil and gas pipeline industry, one way to achieve continued flow while replacing a section of pipe is to introduce a stopple and insert a bypass. However, this process creates two flow-dead legs, which are segments of the original pipeline, typically several pipe diameters...
Proceedings Papers

Paper presented at the CORROSION 2012, March 11–15, 2012
Paper Number: NACE-2012-1196
... ABSTRACT: Preservation of petroleum quality and control of microbiologically influenced corrosion (MIC) in petroleum storage and transfer facilities are critical issues in the oil and gas industry. To address these issues, a model storage tank / dead-leg system has been developed and used...
Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13290
... ABSTRACT Identifying dead-legs and the related corrosion issues continues to be a challenge in the process industry. This paper presents a comprehensive program for managing corrosion in dead-legs. A three-step methodology is adopted focusing on identification, control and monitoring...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-8958
... ABSTRACT This work evaluated the effectiveness of the dewatering process after hydrotesting and examined the internal corrosion threat posed by residual water trapped in crevices and water pushed into a dead leg. A “time to dry” calculation for both cases was conducted based on pipeline...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9128
... ABSTRACT Under deposit corrosion (UDC) and microbiologically influenced corrosion (MIC) are recognized threats to dead legs and low flow/intermittent flow pipelines, particularly in facilities. A number of pipeline failures across the industry have occurred due to UDC and MIC, resulting from...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 7–10, 2016
Paper Number: SPE-183512-MS
... Abstract Dead-legs are potentially the most critical components within a piping system to assess against corrosion degradation. The root cause of the issue relates to fluid being stagnant inside a dead-leg and separated from the main flow stream which in turn creates the condition prone...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 9–12, 2015
Paper Number: SPE-177837-MS
... addresses the new strategy developed and successfully implemented by Dolphin Energy to address the challenges associated with these non-piggable pipelines, sections and dead legs. Through this paper other operating companies who face similar challenges will benefit from the experiences of Dolphin Energy...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-23965-MS
... Abstract A study was conducted to better understand the hydraulic and thermal behaviour of dead-legs within a stacked spool arrangement designed to produce two well streams from a single manifold. The study included scenarios under different rigid spool orientations and active line flow...
Images
Images
Compressor suction header with <b>dead</b> <b>leg</b> used for commissioning.
Published: 09 November 2015
Figure 7 Compressor suction header with dead leg used for commissioning. More
Images
Proposed <b>dead</b> <b>leg</b> drain modification.
Published: 09 November 2015
Figure 8 Proposed dead leg drain modification. More
Proceedings Papers

Paper presented at the CORROSION 2007, March 11–15, 2007
Paper Number: NACE-07526
... ABSTRACT Corrosion of cooling water systems has been evaluated in terms of parameters that may control microbially induced corrosion (MIC) in these systems. Results from tests on parameters such as flow and dead leg geometry suggest that mass transfer throughout a system determines whether MIC...
Proceedings Papers

Paper presented at the CORROSION 2007, March 11–15, 2007
Paper Number: NACE-07667
... ABSTRACT This paper covers corrosion occurring in a dead leg, which was the result of poor design. The common corrosion prevention methods are not effective in mitigating corrosion occurring in dead legs. INTRODUCTION Design of industrial units when their feeds are corrosive has...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, October 22–24, 2012
Paper Number: SPE-160404-MS
... of pipelines, dead legs/jumpers, start-ups, shut-downs, etc. The reported series of tests conducted in the new experimental set-up address hydrate formation risks at the top of pipelines or dead legs due to temperature gradient, amd risk of hydrate formation in the gas phase in the presence KHI during pipeline...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27916-MS
... infrastructure. The flowline length is over 10,000 ft at water depths exceeding 5,000 ft and will tie-in to a current flow loop dead leg of more than 7 miles in length. Success of the project will set a trend and allow development for future projects, i.e. infrastructure led solutions utilizing single flowlines...
Proceedings Papers

Paper presented at the CORROSION 2014, March 9–13, 2014
Paper Number: NACE-2014-3755
... ABSTRACT In a sour field, severe corrosion was observed in dead ends (or dead legs) of oily-water lines with total dissolved solids ( TDS ) up to 250 g/l and pH around 6 – 6.5. At such high TDS and salinity levels, the activity of sulfate reducing bacteria ( SRB ) and thiosulfate reducing...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 9–12, 2015
Paper Number: SPE-177704-MS
...Figure 7 Compressor suction header with dead leg used for commissioning. ...
Proceedings Papers

Paper presented at the OTC Brasil, October 4–6, 2011
Paper Number: OTC-22182-MS
... the installation loads of Lula's 2145 meters water depth. The In-Line PLET and In-Line Wye both have identical configurations that consist of Stress Joints, Pipe-in-Pipe Joints, Swivels, Wye, Ball Valve and Tie-in Hub. But the In-Line PLET's Wye straight brach leg was designed into a Dead Leg to be used...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19114-MS
... up at piping dead leg section. As a result, no sign of CO 2 solid found in the sections that equipped with mitigations measure during experiments. An inherently safer design of equipment and pipelines are very crucial especially for high CO 2 concentration, high operating pressure and low...

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