Global Oil and Gas IMR Service Market 2026 by Company, Regions, Type and Application, Forecast to 2032
1 Market Overview
- 1.1 Product Overview and Scope
- 1.2 Market Estimation Caveats and Base Year
- 1.3 Classification of Oil and Gas IMR Service by Type
- 1.3.1 Overview: Global Oil and Gas IMR Service Market Size by Type: 2021 Versus 2025 Versus 2032
- 1.3.2 Global Oil and Gas IMR Service Consumption Value Market Share by Type in 2025
- 1.3.3 Inspection
- 1.3.4 Maintenance
- 1.3.5 Repair
- 1.4 Classification of Oil and Gas IMR Service by Operational Environment
- 1.4.1 Overview: Global Oil and Gas IMR Service Market Size by Operational Environment: 2021 Versus 2025 Versus 2032
- 1.4.2 Global Oil and Gas IMR Service Consumption Value Market Share by Operational Environment in 2025
- 1.4.3 Offshore Facility IMR
- 1.4.4 Subsea IMR
- 1.4.5 Onshore Oil & Gas Field IMR
- 1.5 Classification of Oil and Gas IMR Service by Operational Equipment
- 1.5.1 Overview: Global Oil and Gas IMR Service Market Size by Operational Equipment: 2021 Versus 2025 Versus 2032
- 1.5.2 Global Oil and Gas IMR Service Consumption Value Market Share by Operational Equipment in 2025
- 1.5.3 Diver-operated type
- 1.5.4 ROV-operated type
- 1.5.5 AUV-operated type
- 1.5.6 UAV-operated type
- 1.5.7 Robot-operated type
- 1.6 Classification of Oil and Gas IMR Service by Contracts and Business Models
- 1.6.1 Overview: Global Oil and Gas IMR Service Market Size by Contracts and Business Models: 2021 Versus 2025 Versus 2032
- 1.6.2 Global Oil and Gas IMR Service Consumption Value Market Share by Contracts and Business Models in 2025
- 1.6.3 One-off Specific-project Contracts
- 1.6.4 Annual Maintenance Contracts
- 1.6.5 Long-term Framework Agreements
- 1.6.6 Full Lifecycle Services
- 1.7 Global Oil and Gas IMR Service Market by Application
- 1.7.1 Overview: Global Oil and Gas IMR Service Market Size by Application: 2021 Versus 2025 Versus 2032
- 1.7.2 Oil
- 1.7.3 Gas
- 1.8 Global Oil and Gas IMR Service Market Size & Forecast
- 1.9 Global Oil and Gas IMR Service Market Size and Forecast by Region
- 1.9.1 Global Oil and Gas IMR Service Market Size by Region: 2021 VS 2025 VS 2032
- 1.9.2 Global Oil and Gas IMR Service Market Size by Region, (2021-2032)
- 1.9.3 North America Oil and Gas IMR Service Market Size and Prospect (2021-2032)
- 1.9.4 Europe Oil and Gas IMR Service Market Size and Prospect (2021-2032)
- 1.9.5 Asia-Pacific Oil and Gas IMR Service Market Size and Prospect (2021-2032)
- 1.9.6 South America Oil and Gas IMR Service Market Size and Prospect (2021-2032)
- 1.9.7 Middle East & Africa Oil and Gas IMR Service Market Size and Prospect (2021-2032)
2 Company Profiles
- 2.1 TechnipFMC
- 2.1.1 TechnipFMC Details
- 2.1.2 TechnipFMC Major Business
- 2.1.3 TechnipFMC Oil and Gas IMR Service Product and Solutions
- 2.1.4 TechnipFMC Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.1.5 TechnipFMC Recent Developments and Future Plans
- 2.2 Oceaneering International
- 2.2.1 Oceaneering International Details
- 2.2.2 Oceaneering International Major Business
- 2.2.3 Oceaneering International Oil and Gas IMR Service Product and Solutions
- 2.2.4 Oceaneering International Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.2.5 Oceaneering International Recent Developments and Future Plans
- 2.3 DOF Group ASA
- 2.3.1 DOF Group ASA Details
- 2.3.2 DOF Group ASA Major Business
- 2.3.3 DOF Group ASA Oil and Gas IMR Service Product and Solutions
- 2.3.4 DOF Group ASA Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.3.5 DOF Group ASA Recent Developments and Future Plans
- 2.4 Subsea 7
- 2.4.1 Subsea 7 Details
- 2.4.2 Subsea 7 Major Business
- 2.4.3 Subsea 7 Oil and Gas IMR Service Product and Solutions
- 2.4.4 Subsea 7 Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.4.5 Subsea 7 Recent Developments and Future Plans
- 2.5 Helix Energy Solutions
- 2.5.1 Helix Energy Solutions Details
- 2.5.2 Helix Energy Solutions Major Business
- 2.5.3 Helix Energy Solutions Oil and Gas IMR Service Product and Solutions
- 2.5.4 Helix Energy Solutions Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.5.5 Helix Energy Solutions Recent Developments and Future Plans
- 2.6 DeepOcean
- 2.6.1 DeepOcean Details
- 2.6.2 DeepOcean Major Business
- 2.6.3 DeepOcean Oil and Gas IMR Service Product and Solutions
- 2.6.4 DeepOcean Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.6.5 DeepOcean Recent Developments and Future Plans
- 2.7 Offshore Oil Engineering Co., Ltd
- 2.7.1 Offshore Oil Engineering Co., Ltd Details
- 2.7.2 Offshore Oil Engineering Co., Ltd Major Business
- 2.7.3 Offshore Oil Engineering Co., Ltd Oil and Gas IMR Service Product and Solutions
- 2.7.4 Offshore Oil Engineering Co., Ltd Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.7.5 Offshore Oil Engineering Co., Ltd Recent Developments and Future Plans
- 2.8 Boskalis
- 2.8.1 Boskalis Details
- 2.8.2 Boskalis Major Business
- 2.8.3 Boskalis Oil and Gas IMR Service Product and Solutions
- 2.8.4 Boskalis Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.8.5 Boskalis Recent Developments and Future Plans
- 2.9 Reach Subsea
- 2.9.1 Reach Subsea Details
- 2.9.2 Reach Subsea Major Business
- 2.9.3 Reach Subsea Oil and Gas IMR Service Product and Solutions
- 2.9.4 Reach Subsea Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.9.5 Reach Subsea Recent Developments and Future Plans
- 2.10 Bourbon Offshore
- 2.10.1 Bourbon Offshore Details
- 2.10.2 Bourbon Offshore Major Business
- 2.10.3 Bourbon Offshore Oil and Gas IMR Service Product and Solutions
- 2.10.4 Bourbon Offshore Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.10.5 Bourbon Offshore Recent Developments and Future Plans
- 2.11 Fugro
- 2.11.1 Fugro Details
- 2.11.2 Fugro Major Business
- 2.11.3 Fugro Oil and Gas IMR Service Product and Solutions
- 2.11.4 Fugro Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.11.5 Fugro Recent Developments and Future Plans
- 2.12 Cyan Renewables
- 2.12.1 Cyan Renewables Details
- 2.12.2 Cyan Renewables Major Business
- 2.12.3 Cyan Renewables Oil and Gas IMR Service Product and Solutions
- 2.12.4 Cyan Renewables Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.12.5 Cyan Renewables Recent Developments and Future Plans
- 2.13 Asso.subsea
- 2.13.1 Asso.subsea Details
- 2.13.2 Asso.subsea Major Business
- 2.13.3 Asso.subsea Oil and Gas IMR Service Product and Solutions
- 2.13.4 Asso.subsea Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.13.5 Asso.subsea Recent Developments and Future Plans
- 2.14 Prysmian Group
- 2.14.1 Prysmian Group Details
- 2.14.2 Prysmian Group Major Business
- 2.14.3 Prysmian Group Oil and Gas IMR Service Product and Solutions
- 2.14.4 Prysmian Group Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.14.5 Prysmian Group Recent Developments and Future Plans
- 2.15 Baker Hughes
- 2.15.1 Baker Hughes Details
- 2.15.2 Baker Hughes Major Business
- 2.15.3 Baker Hughes Oil and Gas IMR Service Product and Solutions
- 2.15.4 Baker Hughes Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.15.5 Baker Hughes Recent Developments and Future Plans
- 2.16 Bhagwan Marine
- 2.16.1 Bhagwan Marine Details
- 2.16.2 Bhagwan Marine Major Business
- 2.16.3 Bhagwan Marine Oil and Gas IMR Service Product and Solutions
- 2.16.4 Bhagwan Marine Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.16.5 Bhagwan Marine Recent Developments and Future Plans
- 2.17 International Ocean Group
- 2.17.1 International Ocean Group Details
- 2.17.2 International Ocean Group Major Business
- 2.17.3 International Ocean Group Oil and Gas IMR Service Product and Solutions
- 2.17.4 International Ocean Group Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.17.5 International Ocean Group Recent Developments and Future Plans
- 2.18 Kongsberg Maritime
- 2.18.1 Kongsberg Maritime Details
- 2.18.2 Kongsberg Maritime Major Business
- 2.18.3 Kongsberg Maritime Oil and Gas IMR Service Product and Solutions
- 2.18.4 Kongsberg Maritime Oil and Gas IMR Service Revenue, Gross Margin and Market Share (2021-2026)
- 2.18.5 Kongsberg Maritime Recent Developments and Future Plans
3 Market Competition, by Players
- 3.1 Global Oil and Gas IMR Service Revenue and Share by Players (2021-2026)
- 3.2 Market Share Analysis (2025)
- 3.2.1 Market Share of Oil and Gas IMR Service by Company Revenue
- 3.2.2 Top 3 Oil and Gas IMR Service Players Market Share in 2025
- 3.2.3 Top 6 Oil and Gas IMR Service Players Market Share in 2025
- 3.3 Oil and Gas IMR Service Market: Overall Company Footprint Analysis
- 3.3.1 Oil and Gas IMR Service Market: Region Footprint
- 3.3.2 Oil and Gas IMR Service Market: Company Product Type Footprint
- 3.3.3 Oil and Gas IMR Service Market: Company Product Application Footprint
- 3.4 New Market Entrants and Barriers to Market Entry
- 3.5 Mergers, Acquisition, Agreements, and Collaborations
4 Market Size Segment by Type
- 4.1 Global Oil and Gas IMR Service Consumption Value and Market Share by Type (2021-2026)
- 4.2 Global Oil and Gas IMR Service Market Forecast by Type (2027-2032)
5 Market Size Segment by Application
- 5.1 Global Oil and Gas IMR Service Consumption Value Market Share by Application (2021-2026)
- 5.2 Global Oil and Gas IMR Service Market Forecast by Application (2027-2032)
6 North America
- 6.1 North America Oil and Gas IMR Service Consumption Value by Type (2021-2032)
- 6.2 North America Oil and Gas IMR Service Market Size by Application (2021-2032)
- 6.3 North America Oil and Gas IMR Service Market Size by Country
- 6.3.1 North America Oil and Gas IMR Service Consumption Value by Country (2021-2032)
- 6.3.2 United States Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 6.3.3 Canada Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 6.3.4 Mexico Oil and Gas IMR Service Market Size and Forecast (2021-2032)
7 Europe
- 7.1 Europe Oil and Gas IMR Service Consumption Value by Type (2021-2032)
- 7.2 Europe Oil and Gas IMR Service Consumption Value by Application (2021-2032)
- 7.3 Europe Oil and Gas IMR Service Market Size by Country
- 7.3.1 Europe Oil and Gas IMR Service Consumption Value by Country (2021-2032)
- 7.3.2 Germany Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 7.3.3 France Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 7.3.4 United Kingdom Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 7.3.5 Russia Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 7.3.6 Italy Oil and Gas IMR Service Market Size and Forecast (2021-2032)
8 Asia-Pacific
- 8.1 Asia-Pacific Oil and Gas IMR Service Consumption Value by Type (2021-2032)
- 8.2 Asia-Pacific Oil and Gas IMR Service Consumption Value by Application (2021-2032)
- 8.3 Asia-Pacific Oil and Gas IMR Service Market Size by Region
- 8.3.1 Asia-Pacific Oil and Gas IMR Service Consumption Value by Region (2021-2032)
- 8.3.2 China Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 8.3.3 Japan Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 8.3.4 South Korea Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 8.3.5 India Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 8.3.6 Southeast Asia Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 8.3.7 Australia Oil and Gas IMR Service Market Size and Forecast (2021-2032)
9 South America
- 9.1 South America Oil and Gas IMR Service Consumption Value by Type (2021-2032)
- 9.2 South America Oil and Gas IMR Service Consumption Value by Application (2021-2032)
- 9.3 South America Oil and Gas IMR Service Market Size by Country
- 9.3.1 South America Oil and Gas IMR Service Consumption Value by Country (2021-2032)
- 9.3.2 Brazil Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 9.3.3 Argentina Oil and Gas IMR Service Market Size and Forecast (2021-2032)
10 Middle East & Africa
- 10.1 Middle East & Africa Oil and Gas IMR Service Consumption Value by Type (2021-2032)
- 10.2 Middle East & Africa Oil and Gas IMR Service Consumption Value by Application (2021-2032)
- 10.3 Middle East & Africa Oil and Gas IMR Service Market Size by Country
- 10.3.1 Middle East & Africa Oil and Gas IMR Service Consumption Value by Country (2021-2032)
- 10.3.2 Turkey Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 10.3.3 Saudi Arabia Oil and Gas IMR Service Market Size and Forecast (2021-2032)
- 10.3.4 UAE Oil and Gas IMR Service Market Size and Forecast (2021-2032)
11 Market Dynamics
- 11.1 Oil and Gas IMR Service Market Drivers
- 11.2 Oil and Gas IMR Service Market Restraints
- 11.3 Oil and Gas IMR Service Trends Analysis
- 11.4 Porters Five Forces Analysis
- 11.4.1 Threat of New Entrants
- 11.4.2 Bargaining Power of Suppliers
- 11.4.3 Bargaining Power of Buyers
- 11.4.4 Threat of Substitutes
- 11.4.5 Competitive Rivalry
12 Industry Chain Analysis
- 12.1 Oil and Gas IMR Service Industry Chain
- 12.2 Oil and Gas IMR Service Upstream Analysis
- 12.3 Oil and Gas IMR Service Midstream Analysis
- 12.4 Oil and Gas IMR Service Downstream Analysis
13 Research Findings and Conclusion
14 Appendix
- 14.1 Methodology
- 14.2 Research Process and Data Source
According to our (Global Info Research) latest study, the global Oil and Gas IMR Service market size was valued at US$ 6097 million in 2025 and is forecast to a readjusted size of US$ 11131 million by 2032 with a CAGR of 8.9% during review period.
Oil and Gas IMR (Inspection, Maintenance, and Repair) services are specialized technical services provided for oil and gas fields, offshore platforms, subsea production systems, oil and gas pipelines, and related energy infrastructure. These services encompass asset condition monitoring, preventive maintenance, corrective repairs, and integrity management. Their core objective is to promptly detect issues—such as corrosion, cracks, leaks, erosion, structural fatigue, and equipment degradation—without interrupting production (or while minimizing downtime). This helps mitigate the risks of production shutdowns, environmental incidents, and safety accidents, while extending the service life of oil and gas facilities. In a narrow sense, oil and gas IMR focuses on offshore and subsea facilities; in a broader sense, it also includes the inspection and maintenance of onshore oil fields, refining and petrochemical units, storage and transport terminals, and long-distance transmission pipelines. In the offshore sector, IMR services cover assets such as fixed production platforms, semi-submersible platforms, FPSOs, subsea trees, wellhead systems, manifolds, umbilicals, risers, flexible pipes, subsea pipelines, and mooring systems. Typical services include visual inspections (via ROV or divers), ultrasonic thickness gauging, non-destructive testing (NDT), corrosion and cathodic protection assessment, marine growth removal, leak detection, valve operation, pipeline repair, connector replacement, and subsea structural reinforcement. With the expansion of deepwater and ultra-deepwater oil and gas development, service methods are shifting from manual diving to the use of work-class ROVs, AUVs, underwater robots, and remote digital monitoring. In the onshore oil, gas, and refining sectors, IMR primarily covers wellhead equipment, drilling and production machinery, storage tanks, pressure vessels, heat exchangers, compressors, pumps, valves, and transmission pipelines. Services include in-line inspection (ILI), wall thickness measurement, weld and crack inspection, corrosion monitoring, equipment cleaning, turnaround/major overhauls, seal repair, rotating equipment maintenance, and risk-based inspection (RBI). Key clients include national oil companies, international oil and gas corporations, independent operators, offshore engineering contractors, pipeline operators, and refining/petrochemical enterprises. Procurement models typically involve long-term framework agreements, annual maintenance contracts, specific overhaul projects, and emergency repair services.
A vast number of global oil and gas platforms, subsea production systems, risers, umbilicals, and pipelines have entered their mid-to-late operational stages, with risks such as corrosion, fatigue, seal degradation, marine growth, and structural damage increasing over time. Compared to constructing new assets, operators increasingly prefer to extend the economic life of existing fields through periodic inspection, preventive maintenance, component refurbishment, and localized repairs, while simultaneously mitigating the risks of unplanned shutdowns and environmental incidents.
The continued expansion of oil and gas development into deepwater, ultra-deepwater, and complex subsea environments is driving demand for specialized vessels, ROVs, and diverless operations. As production extends into deeper waters and more challenging environments—where traditional manual diving is constrained by depth, safety concerns, and operational time limits—work-class ROVs, AUVs, magnetic wall-climbing robots, and specialized subsea tools will increasingly handle tasks such as visual inspection, non-destructive testing (NDT), valve operation, cleaning, cutting, and pipeline repair. Service providers must also equip themselves with dynamic positioning (DP) IMR vessels, lifting equipment, control systems, and subsea intervention tools to establish comprehensive service capabilities integrating vessels, robotics, and engineering expertise.
Digital monitoring and predictive maintenance will drive the evolution of IMR from periodic overhauls to condition-based services. While traditional IMR typically relies on fixed schedules for deploying vessels and personnel for inspections, future operations will increasingly utilize permanent sensors, online corrosion monitoring, intelligent pigging, digital twins, robotic data acquisition, and AI-driven analysis to continuously assess equipment status and failure risks. By integrating historical inspection records with real-time operational and environmental data, operators can proactively identify leaks, corrosion, abnormal vibrations, and performance degradation, allowing them to focus limited maintenance resources on high-risk areas.
Report Scope
This report is a detailed and comprehensive analysis for global Oil and Gas IMR Service market. Both quantitative and qualitative analyses are presented by company, by region & country, by Type and by Application. As the market is constantly changing, this report explores the competition, supply and demand trends, as well as key factors that contribute to its changing demands across many markets. Company profiles and product examples of selected competitors, along with market share estimates of some of the selected leaders for the year 2025, are provided.
Key Features:
Global Oil and Gas IMR Service market size and forecasts, in consumption value ($ Million), 2021-2032
Global Oil and Gas IMR Service market size and forecasts by region and country, in consumption value ($ Million), 2021-2032
Global Oil and Gas IMR Service market size and forecasts, by Type and by Application, in consumption value ($ Million), 2021-2032
Global Oil and Gas IMR Service market shares of main players, in revenue ($ Million), 2021-2026
The Primary Objectives in This Report Are:
To determine the size of the total market opportunity of global and key countries
To assess the growth potential for Oil and Gas IMR Service
To forecast future growth in each product and end-use market
To assess competitive factors affecting the marketplace
This report profiles key players in the global Oil and Gas IMR Service market based on the following parameters - company overview, revenue, gross margin, product portfolio, geographical presence, and key developments. Key companies covered as a part of this study include TechnipFMC, Oceaneering International, DOF Group ASA, Subsea 7, Helix Energy Solutions, DeepOcean, Offshore Oil Engineering Co., Ltd, Boskalis, Reach Subsea, Bourbon Offshore, etc.
This report also provides key insights about market drivers, restraints, opportunities, new product launches or approvals.
Oil and Gas IMR Service market is split by Type and by Application. For the period 2021-2032, the growth among segments provides accurate calculations and forecasts for Consumption Value by Type and by Application. This analysis can help you expand your business by targeting qualified niche markets.
Market segmentation
Market segment by Type
Inspection
Maintenance
Repair
Market segment by Operational Environment
Offshore Facility IMR
Subsea IMR
Onshore Oil & Gas Field IMR
Market segment by Operational Equipment
Diver-operated type
ROV-operated type
AUV-operated type
UAV-operated type
Robot-operated type
Market segment by Contracts and Business Models
One-off Specific-project Contracts
Annual Maintenance Contracts
Long-term Framework Agreements
Full Lifecycle Services
Market segment by Application
Oil
Gas
Market segment by players, this report covers
TechnipFMC
Oceaneering International
DOF Group ASA
Subsea 7
Helix Energy Solutions
DeepOcean
Offshore Oil Engineering Co., Ltd
Boskalis
Reach Subsea
Bourbon Offshore
Fugro
Cyan Renewables
Asso.subsea
Prysmian Group
Baker Hughes
Bhagwan Marine
International Ocean Group
Kongsberg Maritime
Market segment by regions, regional analysis covers
North America (United States, Canada and Mexico)
Europe (Germany, France, UK, Russia, Italy and Rest of Europe)
Asia-Pacific (China, Japan, South Korea, India, Southeast Asia and Rest of Asia-Pacific)
South America (Brazil, Rest of South America)
Middle East & Africa (Turkey, Saudi Arabia, UAE, Rest of Middle East & Africa)
Chapter Outline
Chapter 1, to describe Oil and Gas IMR Service product scope, market overview, market estimation caveats and base year.
Chapter 2, to profile the top players of Oil and Gas IMR Service, with revenue, gross margin, and global market share of Oil and Gas IMR Service from 2021 to 2026.
Chapter 3, the Oil and Gas IMR Service competitive situation, revenue, and global market share of top players are analyzed emphatically by landscape contrast.
Chapter 4 and 5, to segment the market size by Type and by Application, with consumption value and growth rate by Type, by Application, from 2021 to 2032.
Chapter 6, 7, 8, 9, and 10, to break the market size data at the country level, with revenue and market share for key countries in the world, from 2021 to 2026.and Oil and Gas IMR Service market forecast, by regions, by Type and by Application, with consumption value, from 2027 to 2032.
Chapter 11, market dynamics, drivers, restraints, trends, Porters Five Forces analysis.
Chapter 12, the key raw materials and key suppliers, and industry chain of Oil and Gas IMR Service.
Chapter 13, to describe Oil and Gas IMR Service research findings and conclusion.