Offshore Pipeline Inspection Method using Magnethic Tomography

The system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012). 

The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).

The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.

One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods. 

Sumber :

://www.oilandgaseurasia.com/en/tech_trend/offshore-pipelines-will-be-inspected-using-method-magnetic-tomography#sthash.qXyqvK1S.dpuf

The system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).

The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).

The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.

One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.

he system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).

The system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).

The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).

The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.

One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.

The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).
The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.
One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.
- See more at: http://www.oilandgaseurasia.com/en/tech_trend/offshore-pipelines-will-be-inspected-using-method-magnetic-tomography#sthash.qXyqvK1S.dpuf

he system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).
The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).
The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.
One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.
- See more at: http://www.oilandgaseurasia.com/en/tech_trend/offshore-pipelines-will-be-inspected-using-method-magnetic-tomography#sthash.qXyqvK1S.dpuf

he system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).
The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).
The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.
One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.
- See more at: http://www.oilandgaseurasia.com/en/tech_trend/offshore-pipelines-will-be-inspected-using-method-magnetic-tomography#sthash.qXyqvK1S.dpuf

he system AQUA MTM for offshore pipeline inspection using the magnetic tomography method, a product of the joint work of the Russian company NTTs Transcor-K and Malaysian concern PETRONAS, became a winner of the “Spotlight on New Technology Award” at the International Arctic Technology Conference (Houston, USA, 2012).
The following criteria were used by the experts and jury to choose the winners: novelty; innovativeness (brand new solution); approbation; prospects of arousing broad interest from the side of oil and gas operating companies and significant role at the service market. The AQUA MTM victory was determined by a fundamentally new feature – for the first time under operating conditions, it became possible to record mechanical stresses in the areas of metal defects of any nature. This makes it possible to perform the repair work in due time and improve the reliability of the facilities, including non-pigable ones. The high correlation (over 90 %) of safety parameters (Рsaf, Tsaf) received by MTM and common methods: ASME, API, DNV was proven (See Fig.).
The 2-year project on inspection of 200 km of subsea pipelines of PETRONAS using the method AQUA MTM has been successfully completed. It has proven a high technical efficiency of the innovation in detection of potential spots of internal corrosion and sections of pipeline sag resulting from undercurrents. In addition, due to the absence of expenses for the pipeline preparation for inline inspection, a significant economic effect of the innovation was discovered because of a sharp reduction of the inspection time. Another advantage of the technology is its high safety, as there is no risk of the pipeline shutdown in case cleaning pigs or smart pigs get stuck in the reduced bore areas.
One of the important features of the MTM is its unique ability to identify pipeline operation risks in seismically active zones – both underground and underwater, and also in zones of strong undercurrents. The soil washout under the pipeline results in pipe sagging in the sections up to 15 m long. At small diameters (usually up to 500 mm), vertical displacement of the central point of the sagged section can exceed the permissible value, and additional longitudinal tensile stresses combined with circular operating stresses can exceed the metal strength characteristics and cause its destruction. It is impossible to determine the stresses of these anomalies of the stressed-deformed state using conventional non-destructive inspection methods.
- See more at: http://www.oilandgaseurasia.com/en/tech_trend/offshore-pipelines-will-be-inspected-using-method-magnetic-tomography#sthash.qXyqvK1S.dpuf

Pig Launcher

Pig launchersare used to launch the pig into the pipeline, and pig receivers

are used to receive the  pigs after they have made a successful run. The choice of these pig traps will depend on the type of pig to be run and pipeline design conditions. Provisions in the station design should include handling

equipment for pigs 20" and larger. Caution should be taken for liquid spillage from the pig traps

there are basically three reasons to pig a pipeline:

• To batch or separate dissimilar products;
• For displacement purposes;
• For internal inspection.

Utility pigs are inserted into the pipeline to remove unwanted materials, such as wax, from the line. Inline inspection pigs can also be used to examine the pipeline from the inside, and specialty pigs are used to plug the line or isolate certain areas of the line. Lastly, gel pigs are a liquid chemical pigging system.

 

 

Similar to cleaning your plumbing line, utility pigs are used to clean the pipeline of debris or seal the line. Debris can accumulate during construction, and the pipeline is pigged before production commences. Also, debris can build up on the pipeline, and the utility pig is used to scrape it away. Additionally, sealing pigs are used to remove liquids from the pipeline, as well as serve as an interface between two different products within a pipeline. Types of utility pigs include mandrel pigs, foam pigs, solid cast pigs and spherical pigs.

Inspection pigs, also referred to as in-line inspection pigs or smart pigs, gather information about the pipeline from within. . The type of information gathered by smart pigs includes the pipeline diameter, curvature, bends, temperature and pressure, as well as corrosion or metal loss. Inspection pigs utilize two methods to gather information about the interior condition of the pipeline: magnetic flux leakage (MFL) and ultrasonics (UT). MFL inspects the pipeline by sending magnetic flux into the walls of the pipe, detecting leakage, corrosion, or flaws in the pipeline. Ultrasonic inspection directly measures the thickness of the pipe wall by using ultrasonic sounds to measure the amount of time it takes an echo to return to the sensor
Specialty pigs, such as plugs, are used to isolate a section of the pipeline for maintenance work to be performed. The pig plug keeps the pipeline pressure in the line by stopping up the pipeline on either side of where the remedial work is being done.
A combination of gelled liquids, gel pigs can be used in conjunction with conventional pigs or by themselves. Pumped through the pipeline, there are a number of uses for gel pigs, including product separation, debris removal, hydrotesting, dewatering and condensate removal, as well as removing a stuck pig.
Because there now exist multi-diameter pipelines, dual and multi-diameter pigs have been developed, as well.

Sumber :
http://www.tremcopipeline.com.au/pdf/girard/launching_retrieving_procedures1.pdf
http://www.rigzone.com/training/insight.asp?insight_id=310&c_id=19
ppsa-online.com/about-pigs.php