scholarly journals Application of plate with optical sensors in ship information systems

2021 ◽  
Vol 2021 (4) ◽  
pp. 91-97
Author(s):  
Alexander Sergeevich Bordyug
Keyword(s):  
Magnetic Fields ◽  
Optical Sensors ◽  
Optical Sensor ◽  
Oil And Gas ◽  
Fiber Optic ◽  
Oil And Gas Industry ◽  
Measuring System ◽  
Gas Industry ◽  
Field Sensor ◽  
Optic Systems

The article considers application of fiber optic devices in many devices due to their small size and high accuracy. The new fiber optic devices are equipped with a Slab Coupled Fiber (SCF) system. The SCF method uses resonant coupling between an optical fiber and a plate waveguide to create an intra-fiber device. Devices manufactured with this technology consist of polarizers, filters and sensors. Fiber optic systems have been used in torque measurement systems in the oil and gas industry and in aerospace industry. Using this system on ships is more expensive in comparison with the technologies based on strain gauges. There is offered using inexpensive optical measuring system with plate optical sensors. SCF devices use D-shaped fiber as a platform. Plate optical sensor (SCOS) devices are based on the use of an electro-optical sensor. Today, a D-fiber coupled magnetic field sensor has been developed. The device combines a magneto-optical plate waveguide with a D-fiber to measure magnetic fields. The plate coupled magneto-optical sensor (MO-SCOS) measures magnetic fields up to 2 A/m. Due to its short length the sensor can display fields with a spatial resolution of 1 mm.

Multichannel Fiber-Optic Ring Converters for Optical Sensors of Physical Quantities

2016 ◽  
Vol 39 ◽  
pp. 221-227
Author(s):  
V. Shapar ◽  
Vladimir Lysenko ◽  
Alla V. Bondarenko
Keyword(s):  
Optical Sensors ◽  
Oil And Gas ◽  
Fiber Optic ◽  
High Sensitivity ◽  
Oil And Gas Industry ◽  
Fiber Bundles ◽  
Measuring Instruments ◽  
Explosion Safety ◽  
Gas Industry ◽  
Physical Quantities

The substantial achievements in the area of manufacturing technology for optical fiber bundles and fiber-optic transducers (FOTs) stimulated interest in their application in various sensors of physical quantities as well as in measuring instruments. Being insensitive to electromagnetic interferences, FOTs demonstrated high sensitivity to measured physical quantities. They made it possible to perform contactless measurements in many cases of hindered access to the objects under investigation. Their spark-and explosion-safety as well as manufacturing simplicity make FOT-based measuring instruments especially useful for application in coal-mining and oil-and-gas industry where the safety problems are of vital importance.

scholarly journals Simulation of 500 MHz Electromagnetic Interference Effect on Electrical Equipment with Various RF Grids and Enclosures

2019 ◽  
Vol 1 ◽  
pp. 21-27
Author(s):  
I.F. Warsito ◽  
H. Widyaputera ◽  
E. Supriyanto ◽  
J. Pusppanathan ◽  
M. A. A. Taib ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Electromagnetic Interference ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Electrical Equipment ◽  
Protection System ◽  
Comsol Multiphysics ◽  
Gas Industry ◽  
Near Resonance ◽  
Electric And Magnetic Fields

This paper presents the modelling and simulation of a protection system for equipment in the oil and gas industry with various RF grids and enclosures against 500 MHz electromagnetic interference (EMI). COMSOL Multiphysics®Modelling software was used in this study. Electric and magnetic fields distributions were determined by using the Generalized Minimal Residual Method (GMRES) which was integrated into COMSOL Multiphysics® Modelling software. Simulation results indicated that larger RF grid size contributed to the higher electric and magnetic field on equipment. Furthermore, without RF grid, electric and magnetic fields on the equipment were increased significantly (up to 100x). The maximum electric and magnetic fields were found to be near resonance enclosure size (299 mm for 500 MHz frequency source). The results showed that the presence of the RF grid for the EMI protection system was essential.

scholarly journals A Review of Distributed Fiber--optic Sensing in the Oil and Gas Industry

2021 ◽  
pp. 1-1
Author(s):  
Islam Ashry ◽  
Yuan Mao ◽  
Biwei Wang ◽  
Frode Hveding ◽  
Ahmed Bukhamseen ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Fiber Optic ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Fiber Optic Sensing

scholarly journals Effect of Frequency on Hydrocarbon (HC) Detection Using 3D Finite Integral Modeling

2012 ◽  
Vol 326-328 ◽  
pp. 654-661 ◽  
Author(s):  
Hanita Daud ◽  
Majid Niaz Akhtar ◽  
Noorhana Yahya ◽  
Nadeem Nasir ◽  
Hasan Soleimani
Keyword(s):  
Magnetic Fields ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Hydrocarbon Reservoirs ◽  
Constant Current ◽  
Gas Industry ◽  
Sea Bed ◽  
Electric And Magnetic Fields ◽  
Deep Target ◽  
Target Depth

Detection of hydrocarbon in sea bed logging (SBL) is still a very challenging task for deep target reservoirs. The response of electromagnetic (EM) field from marine environment is very low and it is very difficult to predict deep target reservoirs below 2500 m from the sea floor. Straight antennas at 0.125 Hz and 0.0625 Hz are used for the detection of deep target hydrocarbon reservoirs below the seafloor. The finite integration method (FIM) is applied on 3D geological seabed models. The proposed area of the seabed model (16 km ×16 km) was simulated by using CST (computer simulation technology) EM studio. The comparison of different frequencies for different target depths was done in our proposed model. Total electric and magnetic fields were applied instead of scattered electric and magnetic fields, due to its accurate and precise measurements of resistivity contrast at the target depth up to 3000 m. From the results, it was observed that straight antenna at 0.0625 Hz shows 50.11% resistivity contrast at target depth of 1000 m whereas straight antenna at 0.125 Hz showed 42.30% resistivity contrast at the same target depth for the E-field. It was found that the E-field response decreased as the target depth increased gradually by 500 m from 1000 m to 3000 m at different values of frequencies with constant current (1250 A). It was also investigated that at frequency of 0.0625 Hz, straight antenna gave 7.10% better delineation of hydrocarbon at 3000 m target depth. It was speculated that an antenna at 0.0625 Hz may be able to detect hydrocarbon reservoirs at 4000 m target depth below the seafloor. This EM antenna may open a new frontier for oil and gas industry for the detection of deep target hydrocarbon reservoirs below the seafloor.

scholarly journals Underwater Survey for Oil and Gas Industry: A Review of Close Range Optical Methods

2021 ◽  
Vol 13 (14) ◽  
pp. 2789
Author(s):  
Bertrand Chemisky ◽  
Fabio Menna ◽  
Erica Nocerino ◽  
Pierre Drap
Keyword(s):  
High Resolution ◽  
Optical Sensors ◽  
Large Scale ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Optical Methods ◽  
Optical Systems ◽  
Limiting Factors ◽  
Gas Industry ◽  
Offshore Industry

In both the industrial and scientific fields, the need for very high-resolution cartographic data is constantly increasing. With the aging of offshore subsea assets, it is very important to plan and maintain the longevity of structures, equipment, and systems. Inspection, maintenance, and repair (IMR) of subsea structures are key components of an overall integrity management system that aims to reduce the risk of failure and extend the life of installations. The acquisition of very detailed data during the inspection phase is a technological challenge, especially since offshore installations are sometimes deployed in extreme conditions (e.g., depth, hydrodynamics, visibility). After a review of high resolution mapping techniques for underwater environment, this article will focus on optical sensors that can satisfy the requirements of the offshore industry by assessing their relevance and degree of maturity. These requirements concern the resolution and accuracy but also cost, ease of implementation, and qualification. With the evolution of embedded computing resources, in-vehicle optical survey solutions are becoming increasingly important in the landscape of large-scale mapping solutions and more and more off-the-shelf systems are now available. The issues raised in this review are mainly related to the qualification of the results produced by optical systems and their limitations to cover all the needs expressed by the oil and gas industry field. Interesting qualification works of these solutions are presented in this paper as well as the use of online processing tools such as visual odometry or VSLAM to guide the data acquisition and pre-qualified survey. Finally, it seems interesting to combine acoustic and optical technologies in order to extend the field of application of these methods to low visibility conditions, which remains one of the main limiting factors in the generalization of the use of optical sensors in high resolution underwater cartography applications.

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