Interpretation of trunk pipeline infrastructure

Customer

Oil and gas company

Project's objective

Source Data:

Deciphering aerospace images plays an important role in organizing geotechnical monitoring of main pipelines. Main pipelines are complex technical systems, so a thorough development of the decryption technology for infrastructure elements allows for the effective processing of remote sensing materials to support the operation of main oil pipelines, including monitoring tasks for engineering systems in complex natural and climatic conditions. Since the main task was to analyze various remote sensing materials to meet the production needs of oil and gas companies, satellite images with resolutions of 1.5 m and 0.5 m and UAV (Unmanned Aerial Vehicle) materials with a resolution of 0.1 m were selected. Vector data on the location of infrastructure objects were also provided by the customer.

Work Stages:

Stage 1: Preliminary material processing. Initially, primary processing of the survey materials was carried out, including radiometric, geometric, and atmospheric corrections. To improve the spatial alignment of the images, orthorectification was performed using reference points and the AW3D 30m digital elevation model. Color correction was also applied to enhance the interpretability of the images. As a result, orthophotoplans with a standard deviation of no more than 2 meters were obtained.

Stage 2: Deciphering terrain objects. The technological scheme for visually deciphering the infrastructure objects of main pipelines from high and very high-resolution satellite images involves recognizing objects of the natural and technical environment and then graphically highlighting them in the image. The informativeness largely depends on the spatial resolution of the images. An analysis of the feasibility of deciphering various objects in images with different spatial resolutions was conducted at this stage. Scanex Image Processor software was used in this phase.

Stage 3: Comparison of decryption results. After the completion of Stage 2, a comparative analysis of the deciphering capabilities of the oil and gas infrastructure objects was conducted. The main part of the report consisted of a list of objects recognizable in aerospace images with different spatial resolutions. The work on deciphering aerial survey materials showed that aerial images with a resolution of over 0.1 m/pixel allow deciphering the composition of objects in accordance with the requirements for 1:500 scale topographic plans. Aerial images with a resolution of 0.5 m/pixel, when accompanied by operational documentation, provide the ability to decipher the composition of objects in accordance with the requirements for 1:2000 scale topographic plans. Images from space with a resolution of 0.3 m/pixel make the recognition of main pipeline infrastructure objects more certain. In cases where the informativeness of the obtained schematics is insufficient and some objects or their characteristics cannot be identified, such as underground utilities, vegetation types, building purposes, etc., this data can be obtained during on-site terrain surveys and selective instrumental topographic surveys of the corresponding scale. Aerial images with a spatial resolution of 1.5 m/pixel can also be used for solving production tasks, such as creating simplified spatial data maps, which, nevertheless, can be extremely useful for populating corporate geoinformation systems and geoprotals. Currently, it is advisable to use materials from aerial surveying systems with high and medium spatial resolutions, as well as UAV and VLS (Very Low-Level Satellite) materials, in combination with height data obtained through precise leveling during geotechnical monitoring for populating corporate GIS.

Completed work

Example of interpretation of trunk pipelines infrastructure using 0.5 m/pix satellite image

Work description

Resolution of RS Data			Resolution	PD Class
1.5 m/pixel	0.5 m/pixel	0.1 m/pixel	Resolution	PD Class
Data with a resolution of 1.5 m/pixel and larger are suitable for deciphering the listed objects.	Data with a resolution of 0.5 m/pixel and larger are suitable for deciphering the listed objects.	Data with a resolution of 0.1 m/pixel and larger are suitable for deciphering the listed objects.	<1.5 m/pixel	Sites (NPS, LPDS, UZA, SOD CP, etc.)
			<1.5 m/pixel	Sites (schematic outline)
			<1.5 m/pixel	Tower and mast structures
			<1.5 m/pixel	Truss poles
			<1.5 m/pixel	Protective and anti-erosion embankments
			<1.5 m/pixel	Buildings
			<1.5 m/pixel	Bridges
			<1.5 m/pixel	Road and street axes
			<1.5 m/pixel	Technological estacade axes
			<1.5 m/pixel	Along-road passage axes
			<1.5 m/pixel	MT technical corridors
			<1.5 m/pixel	Overhead power line crossings
			<1.5 m/pixel	Along-road passage crossings
			<1.5 m/pixel	Hydrographic object crossings
			<1.5 m/pixel	Large vertical cylindrical reservoirs
			<1.5 m/pixel	Large structures
			<1.5 m/pixel	Technological equipment (SOD CP, etc.)
			<1.5 m/pixel	Technological equipment (outlines)
Data with a resolution of 1.5 m/pixel are not suitable for confident deciphering of the listed objects.			<0.5 m/pixel	Venturi tees
			<0.5 m/pixel	Top/bottom platform fill
			<0.5 m/pixel	Lightning rods
			<0.5 m/pixel	Large-diameter valves
			<0.5 m/pixel	Protective cases
			<0.5 m/pixel	Pressure tapping pits
			<0.5 m/pixel	Lighting masts
			<0.5 m/pixel	Fences
			<0.5 m/pixel	Power line supports (poles)
			<0.5 m/pixel	MT axes
			<0.5 m/pixel	Pedestrian pathway axes
			<0.5 m/pixel	Service platforms
			<0.5 m/pixel	Coverings
			<0.5 m/pixel	Equipped MT crossings
			<0.5 m/pixel	Small rectangular reservoirs
			<0.5 m/pixel	Technological estacades
			<0.5 m/pixel	Technological equipment (structures)
	Data with resolutions of 0.5 and 1.5 m/pixel are not suitable for confident deciphering of the listed objects.		<0.1 m/pixel	Anchor blocks
			<0.1 m/pixel	Mileage values of mainline valves
			<0.1 m/pixel	Road signs and markers
			<0.1 m/pixel	Drainage pipes, troughs
			<0.1 m/pixel	Small-diameter valves
			<0.1 m/pixel	Mileage markers
			<0.1 m/pixel	EHFs (SCS, CIS, CHP, GAS)
			<0.1 m/pixel	Monolithic benchmarks with protective pits
			<0.1 m/pixel	Coverings
			<0.1 m/pixel	Coverings of equipped crossings over MT
			<0.1 m/pixel	Fence supports
			<0.1 m/pixel	Technological pipelines
			<0.1 m/pixel	Technological equipment (details)
			<0.1 m/pixel	Stairs, steps, structural elements
			<0.1 m/pixel	Drainage troughs
			<0.1 m/pixel	Pits
			<0.1 m/pixel	Cables and communication lines or power lines
			<0.1 m/pixel	Security signs

Results

Resolution of RS Data			Resolution	PD Class
1.5 m/pixel	0.5 m/pixel	0.1 m/pixel	Resolution	PD Class
Data with a resolution of 1.5 m/pixel and larger are suitable for deciphering the listed objects.	Data with a resolution of 0.5 m/pixel and larger are suitable for deciphering the listed objects.	Data with a resolution of 0.1 m/pixel and larger are suitable for deciphering the listed objects.	<1.5 m/pixel	Sites (NPS, LPDS, UZA, SOD CP, etc.)
			<1.5 m/pixel	Sites (schematic outline)
			<1.5 m/pixel	Tower and mast structures
			<1.5 m/pixel	Truss poles
			<1.5 m/pixel	Protective and anti-erosion embankments
			<1.5 m/pixel	Buildings
			<1.5 m/pixel	Bridges
			<1.5 m/pixel	Road and street axes
			<1.5 m/pixel	Technological estacade axes
			<1.5 m/pixel	Along-road passage axes
			<1.5 m/pixel	MT technical corridors
			<1.5 m/pixel	Overhead power line crossings
			<1.5 m/pixel	Along-road passage crossings
			<1.5 m/pixel	Hydrographic object crossings
			<1.5 m/pixel	Large vertical cylindrical reservoirs
			<1.5 m/pixel	Large structures
			<1.5 m/pixel	Technological equipment (SOD CP, etc.)
			<1.5 m/pixel	Technological equipment (outlines)
Data with a resolution of 1.5 m/pixel are not suitable for confident deciphering of the listed objects.			<0.5 m/pixel	Venturi tees
			<0.5 m/pixel	Top/bottom platform fill
			<0.5 m/pixel	Lightning rods
			<0.5 m/pixel	Large-diameter valves
			<0.5 m/pixel	Protective cases
			<0.5 m/pixel	Pressure tapping pits
			<0.5 m/pixel	Lighting masts
			<0.5 m/pixel	Fences
			<0.5 m/pixel	Power line supports (poles)
			<0.5 m/pixel	MT axes
			<0.5 m/pixel	Pedestrian pathway axes
			<0.5 m/pixel	Service platforms
			<0.5 m/pixel	Coverings
			<0.5 m/pixel	Equipped MT crossings
			<0.5 m/pixel	Small rectangular reservoirs
			<0.5 m/pixel	Technological estacades
			<0.5 m/pixel	Technological equipment (structures)
	Data with a resolution of 0.5 and 1.5 m/pixel are not suitable for confident deciphering of the listed objects.		<0.1 m/pixel	Anchor blocks
			<0.1 m/pixel	Mileage values of mainline valves
			<0.1 m/pixel	Road signs and markers
			<0.1 m/pixel	Drainage pipes, troughs
			<0.1 m/pixel	Small-diameter valves
			<0.1 m/pixel	Mileage markers
			<0.1 m/pixel	EHXs (SCS, CIS, CHP, GAS)
			<0.1 m/pixel	Monolithic benchmarks with protective pits
			<0.1 m/pixel	Coverings
			<0.1 m/pixel	Coverings of equipped crossings over MT
			<0.1 m/pixel	Fence supports
			<0.1 m/pixel	Technological pipelines
			<0.1 m/pixel	Technological equipment (details)
			<0.1 m/pixel	Stairs, steps, structural elements
			<0.1 m/pixel	Drainage troughs
			<0.1 m/pixel	Pits
			<0.1 m/pixel	Cables and communication lines or power lines
			<0.1 m/pixel	Security signs

order TK

Need for consultation?

Fill the form and we will contact you

Contact phone*

Full Name*

Area of interest*

Task description*

By clicking the «Send» button, you give your consent to the processing of your personal data, in accordance with Federal Law No. 152-FZ of July 27, 2006 «On Personal Data», on the conditions and for the purposes specified in the Consent to the processing of personal data.