Wellhead Integrity

Interwell’s wellhead Integrity technology consists of unique safety solutions offering two independent barriers on the wellhead outlets, controlled access to annulus during injection or bleed-off operations, and continuous pressure & temperature monitoring of annulus even during emergency shut-down. Interwell Advanced Monitoring & Control Solutions including the VR Sensor™, MSAS™, and A-Pro™, provide unparalleled monitoring and dual barriers control of annulus pressure in dry wellheads, ensuring enhanced well integrity throughout the well lifecycle

  • Annulus Pressure Management Interwell’s annulus pressure monitoring and management system provides a cost-effective and reliable system for continuous pressure and temperature monitoring, and pressure management applications.
Casing Barrier Solutions

Leading the way in innovative barrier technology for casing applications. Our advanced solutions ensure the highest standards of safety, performance, and reliability for operational efficiency.

  • Barrier Verification Barrier verification enhances safety and compliance, reducing risks and costs over time. By implementing robust verification processes, we ensure ongoing regulatory adherence and foster a culture of continuous improvement within the industry.
  • Temporary P&A Interwell offers secure & efficient Temporary P&A solutions with advanced casing plugs, ensuring well integrity and compliance during well suspension and abandonment operations.
  • Well Testing (Pressure/Leak/Inflow Test) Detect leaks, perform pressure and inflow tests on casing, liner or BOPs with high operational efficiency and no left-hand rotation.
Completion

Interwell offers cutting-edge completion solutions that enhance production and well integrity, access and flow control. This ensures superior well performance, reliability, substantially reduced rig time during the installation phase and increased well uptime during the production phase.

  • Flow Control We offer a wide range of products during and after the completion phase. Our flow control products are tested to highest level of industry standards and provide reduced time and HSE risks.
  • Interventionless Completion Installations Interwell enhances production and eliminates intervention needs during and after completion installations by providing remotely operated completion tools.
  • Production Optimisation Prevent water influx, increase oil and gas production and extend well lifespan. Isolate zones, retrofit gas lift and optimise revenue through tailored solutions.
  • Rigless Installation of VXT The Inter Remote Bypass Valve (IRBV) enhances efficiency in subsea operations with a vertical x-mas tree (VXT). It enables batch operations and reduces costs by minimising rig time and interventions, providing a remotely controlled, pressure-cycled barrier compliant with ISO standards.
  • Scale & Corrosion Management Enhance integrity, well uptime and ensure stable and continuous Chemical Injection (CI) by utilising Interwell’s unique barrier qualified CI solutions.
  • Temporary P&A Interwell offers secure & efficient Temporary P&A solutions with advanced casing plugs, ensuring well integrity and compliance during well suspension and abandonment operations.
  • Well Testing (Pressure/Leak/Inflow Test) Detect leaks, perform pressure and inflow tests on casing, liner or BOPs with high operational efficiency and no left-hand rotation.
Intervention

Our well Intervention portfolio comprises of cutting-edge barrier products. Demonstrating the extremes of mechanical barriers; wireline deployed annular isolation to multi-functioning valves, all of which can be verified through novel means.

  • Annulus Isolation Isolate the annulus to prevent water influx, stop water production, and enhance oil and gas recovery, extending the life of your well.
  • Barrier Monitoring Log pressure and temperature below a barrier for real-time or long-term verification. Data can be monitored live or sent to the surface.
  • Completion Repair Repair old and new completions, including setting packers, leak testing and straddle operations. Achieve reduces costs, compared to a full new completion.
  • Production Optimisation Prevent water influx, increase oil and gas production and extend well lifespan. Isolate zones, retrofit gas lift and optimise revenue through tailored solutions.
  • Temporary P&A Interwell offers secure & efficient Temporary P&A solutions with advanced casing plugs, ensuring well integrity and compliance during well suspension and abandonment operations.
  • Well Integrity Re-establish well integrity, extend well lifespan and increase revenue. Efficient, cost-effective solutions compared to new completions.
  • Well Testing (Pressure/Leak/Inflow Test) Detect leaks, perform pressure and inflow tests on casing, liner or BOPs with high operational efficiency and no left-hand rotation.
  • Zonal Isolation Advanced zonal isolation solutions for complex well environments, designed to eliminate unwanted fluid migration, restore production integrity, and meet the most demanding regulatory requirements.
  • Water Shut-Off Excessive water production reduces efficiency, increases costs, and accelerates well decline. Interwell delivers tailored precision water shut-off solutions. Designed to address the root cause, not just the symptom.
Plug & Abandonment

Eliminate risk, prevent leaks and reduce environmental impact; securing your wells and safeguarding the future.

  • Barrier Verification Barrier verification enhances safety and compliance, reducing risks and costs over time. By implementing robust verification processes, we ensure ongoing regulatory adherence and foster a culture of continuous improvement within the industry.
  • Reservoir Barrier RockSolid™ Permanent Abandonment Barrier Technology.
  • Sustained Casing Pressure (SCP/SCVF) Eliminate sustained casing pressure with RockSolid™: a rigless, single-run solution that creates a permanent rock-to-rock barrier, restoring caprock integrity for eternity. Achieve more with less, ensuring unmatched well stability and performance.
  • Slot Recovery Ongoing rigless deployments with our proprietary, thermite-based solution deliver a targeted exothermic reaction removing all wellbore elements to reinstate caprock integrity in the well cross section; as nature intended and for eternity.
  • Temporary P&A Interwell offers secure & efficient Temporary P&A solutions with advanced casing plugs, ensuring well integrity and compliance during well suspension and abandonment operations.
  • Well Testing (Pressure/Leak/Inflow Test) Detect leaks, perform pressure and inflow tests on casing, liner or BOPs with high operational efficiency and no left-hand rotation.
  • Zonal Isolation Advanced zonal isolation solutions for complex well environments, designed to eliminate unwanted fluid migration, restore production integrity, and meet the most demanding regulatory requirements.
Renewables & Low Carbon

At Interwell, we are committed to a sustainable future by integrating renewable energy solutions into our portfolio of services. With expertise honed over years in the oil & gas sector, we bring a unique perspective and a robust set of skills to the renewable energy landscape.

  • Annulus Pressure Management Interwell’s annulus pressure monitoring and management system provides a cost-effective and reliable system for continuous pressure and temperature monitoring, and pressure management applications.
  • Barrier Verification Barrier verification enhances safety and compliance, reducing risks and costs over time. By implementing robust verification processes, we ensure ongoing regulatory adherence and foster a culture of continuous improvement within the industry.
  • Barrier Monitoring Log pressure and temperature below a barrier for real-time or long-term verification. Data can be monitored live or sent to the surface.
  • Completion Repair Repair old and new completions, including setting packers, leak testing and straddle operations. Achieve reduces costs, compared to a full new completion.
  • Flow Control We offer a wide range of products during and after the completion phase. Our flow control products are tested to highest level of industry standards and provide reduced time and HSE risks.
  • Sustained Casing Pressure (SCP/SCVF) Eliminate sustained casing pressure with RockSolid™: a rigless, single-run solution that creates a permanent rock-to-rock barrier, restoring caprock integrity for eternity. Achieve more with less, ensuring unmatched well stability and performance.
  • Scale & Corrosion Management Enhance integrity, well uptime and ensure stable and continuous Chemical Injection (CI) by utilising Interwell’s unique barrier qualified CI solutions.
  • Temporary P&A Interwell offers secure & efficient Temporary P&A solutions with advanced casing plugs, ensuring well integrity and compliance during well suspension and abandonment operations.
  • Well Integrity Re-establish well integrity, extend well lifespan and increase revenue. Efficient, cost-effective solutions compared to new completions.
  • Zonal Isolation Advanced zonal isolation solutions for complex well environments, designed to eliminate unwanted fluid migration, restore production integrity, and meet the most demanding regulatory requirements.
  • Retrievable Bridge Plugs We provide reliable temporary isolation in the most demanding wells, from high-pressure and high-temperature operations to complex geometries. Designed to pass through tight wellbore restrictions and set in larger casing.
  • Plug & Abandonment RockSolid™ is a new alternative to slot recovery and permanent abandonment (P&A) of wellbores. The technology is based on thermite which melts all well elements and solidifies to reinstate caprock integrity.
  • Plugs & Packers We provide reliable wellbore isolation in demanding environments, from high-pressure operations to complex well geometries. Offering both retrievable and permanent options, they ensure secure sealing and anchoring for temporary or long-term needs. These solutions help minimise downtime, protect reservoirs and optimise well performance during interventions and workover operations.
  • Glass Barrier Plugs Explore our portfolio of Glass Barrier Plugs including the Inter Remote Bypass Valve (IRBV) and Inter Remote Shatter Valve (IRSV). These tools improve well performance and safety, reduce wireline interventions, ensure seamless completions and withstand extreme conditions; offering flexible and cost-effective solutions.
  • Straddle Solutions Interwell’s Straddle Solutions offer flexible tools for well intervention, including production control and safety valve retrofitting. The Anchored Production Straddle (APS) features a slim design for workover applications and gas-lift system retrofitting. The Insert Valve Carrier (IVC) repairs safety valve nipples cost-effectively, while the Injection Safety Valve (ISV) stabilises water injection. These solutions ensure optimal well performance and reduced costs.
  • Flow Control Interwell’s Flow Control Solutions boost well efficiency and integrity. The Injection Safety Valve (ISV) stabilises water injection and prevents inflow, reducing chattering with adjustable pressure and API 14A compliance. The Intelligent Barrier Valve (IBV) provides reliable, remote-controlled operation; reducing risks, costs and meets ISO 14310 V0 standards.
  • Setting Tools Setting tools are essential for installing downhole isolation devices and enhancing well interventions & completions. Interwell’s tools, like the Electronic Setting Tool (EST) and Hydraulic Running Tool (HRT), offer control, versatility and efficiency. They simplify operations, reduce risks and ensures cost-effective well management.
  • Data Acquisition Interwell's data acquisition technologies enable real-time wireless monitoring and control to ensure well integrity and efficiency. Delivering continuous downhole data, these systems simplify operations, reduce costs and enhance safety with easy deployment via slickline, electric line or coiled tubing. Our acoustic communication ensures secure data transmission without affecting barriers. With monitoring capabilities of up to 10 years, these tools are ideal for barrier verification, pressure logging and integrity management; supporting long-term well performance with fewer interventions.
  • Plug & Packer Add-Ons Interwell’s Plug & Packer Add-Ons enhance well integrity and streamline operations. They ensure secure well isolation, manage flow direction and handle high pressures while collecting debris. Advanced control features and reliable temporary barriers optimise well performance, reduce intervention needs and improve operational efficiency.
  • Chemical Injection Interwell’s Chemical Injection Systems, like the SureFlo™ range, tackle U-tubing effects and unstable flow; enhancing well performance. Key benefits include anti-U-tubing protection and dual back check systems, ensuring efficient chemical injection and reliable operation. Integrated design tools and software optimised performance, boosting efficiency and well reliability throughout the field life.
  • Side Pocket Mandrels Interwell’s Side Pocket Mandrels, including the NexLift™ Series, are designed for modern gas lift operations. Our mandrels improve well integrity, simplify valve handling and boost gas lift efficiency; reducing intervention needs.
  • Gas Lift Solutions Improve production efficiency and well integrity with Interwell’s gas lift solutions. Designed for challenging wells and environments, our gas lift technologies reduce operational interventions and support reliable performance. Gas Lift Valves (GLVs) handle scale, erosion and high pressures; helping to minimise downtime. Our retrofit systems provide an efficient alternative to recompletions, allowing upgrades while maintaining well integrity. Interwell’s approach supports long-term well performance.
  • Annular Sensor System Interwell’s Annular Sensor Systems monitor wellhead integrity with continuous pressure and temperature checks. They ensure safety under impact, reduce costs by eliminating traditional valves and provide both autonomous and manual pressure management. These systems enhance well safety and efficiency throughout the well lifecycle.
  • Surface Annular Systems Our Surface Annular Systems ensure wellhead integrity by addressing sustained annulus pressure (SAP) and enhancing barrier integrity. The Master Surface Annulus Safety Valve (MSAS™) and Hydraulic Surface Annulus Safety Valve (HSAS™) create independent barriers, meet regulatory standards and mitigate risks. These systems enhance safety, reduce lifecycle costs and improve operational reliability. Discover our portfolio of Surface Annular Systems below.
  • Annular Isolation Solutions Interwell’s Annular Isolation Solutions enhance well performance and extend field life. The CannSeal ZonalSeal uses patented epoxy technology to create precise annular seals in a single run, reducing water production. Compatible with standard electric wireline, it's ideal for vertical and horizontal wells, improving recovery and efficiently prolonging well life.
Wellhead Integrity

Interwell’s wellhead Integrity technology consists of unique safety solutions offering two independent barriers on the wellhead outlets, controlled access to annulus during injection or bleed-off operations, and continuous pressure & temperature monitoring of annulus even during emergency shut-down. Interwell Advanced Monitoring & Control Solutions including the VR Sensor™, MSAS™, and A-Pro™, provide unparalleled monitoring and dual barriers control of annulus pressure in dry wellheads, ensuring enhanced well integrity throughout the well lifecycle

Well location
Casing Barrier Solutions

Leading the way in innovative barrier technology for casing applications. Our advanced solutions ensure the highest standards of safety, performance, and reliability for operational efficiency.

Well location
Completion

Interwell offers cutting-edge completion solutions that enhance production and well integrity, access and flow control. This ensures superior well performance, reliability, substantially reduced rig time during the installation phase and increased well uptime during the production phase.

Well location
Intervention

Our well Intervention portfolio comprises of cutting-edge barrier products. Demonstrating the extremes of mechanical barriers; wireline deployed annular isolation to multi-functioning valves, all of which can be verified through novel means.

Well location
Plug & Abandonment

Eliminate risk, prevent leaks and reduce environmental impact; securing your wells and safeguarding the future.

Well location
Renewables & Low Carbon

At Interwell, we are committed to a sustainable future by integrating renewable energy solutions into our portfolio of services. With expertise honed over years in the oil & gas sector, we bring a unique perspective and a robust set of skills to the renewable energy landscape.

Well location
Choose Product type
  • Retrievable Bridge Plugs We provide reliable temporary isolation in the most demanding wells, from high-pressure and high-temperature operations to complex geometries. Designed to pass through tight wellbore restrictions and set in larger casing.
  • Plug & Abandonment RockSolid™ is a new alternative to slot recovery and permanent abandonment (P&A) of wellbores. The technology is based on thermite which melts all well elements and solidifies to reinstate caprock integrity.
  • Plugs & Packers We provide reliable wellbore isolation in demanding environments, from high-pressure operations to complex well geometries. Offering both retrievable and permanent options, they ensure secure sealing and anchoring for temporary or long-term needs. These solutions help minimise downtime, protect reservoirs and optimise well performance during interventions and workover operations.
  • Glass Barrier Plugs Explore our portfolio of Glass Barrier Plugs including the Inter Remote Bypass Valve (IRBV) and Inter Remote Shatter Valve (IRSV). These tools improve well performance and safety, reduce wireline interventions, ensure seamless completions and withstand extreme conditions; offering flexible and cost-effective solutions.
  • Straddle Solutions Interwell’s Straddle Solutions offer flexible tools for well intervention, including production control and safety valve retrofitting. The Anchored Production Straddle (APS) features a slim design for workover applications and gas-lift system retrofitting. The Insert Valve Carrier (IVC) repairs safety valve nipples cost-effectively, while the Injection Safety Valve (ISV) stabilises water injection. These solutions ensure optimal well performance and reduced costs.
  • Flow Control Interwell’s Flow Control Solutions boost well efficiency and integrity. The Injection Safety Valve (ISV) stabilises water injection and prevents inflow, reducing chattering with adjustable pressure and API 14A compliance. The Intelligent Barrier Valve (IBV) provides reliable, remote-controlled operation; reducing risks, costs and meets ISO 14310 V0 standards.
  • Setting Tools Setting tools are essential for installing downhole isolation devices and enhancing well interventions & completions. Interwell’s tools, like the Electronic Setting Tool (EST) and Hydraulic Running Tool (HRT), offer control, versatility and efficiency. They simplify operations, reduce risks and ensures cost-effective well management.
  • Data Acquisition Interwell's data acquisition technologies enable real-time wireless monitoring and control to ensure well integrity and efficiency. Delivering continuous downhole data, these systems simplify operations, reduce costs and enhance safety with easy deployment via slickline, electric line or coiled tubing. Our acoustic communication ensures secure data transmission without affecting barriers. With monitoring capabilities of up to 10 years, these tools are ideal for barrier verification, pressure logging and integrity management; supporting long-term well performance with fewer interventions.
  • Plug & Packer Add-Ons Interwell’s Plug & Packer Add-Ons enhance well integrity and streamline operations. They ensure secure well isolation, manage flow direction and handle high pressures while collecting debris. Advanced control features and reliable temporary barriers optimise well performance, reduce intervention needs and improve operational efficiency.
  • Chemical Injection Interwell’s Chemical Injection Systems, like the SureFlo™ range, tackle U-tubing effects and unstable flow; enhancing well performance. Key benefits include anti-U-tubing protection and dual back check systems, ensuring efficient chemical injection and reliable operation. Integrated design tools and software optimised performance, boosting efficiency and well reliability throughout the field life.
  • Side Pocket Mandrels Interwell’s Side Pocket Mandrels, including the NexLift™ Series, are designed for modern gas lift operations. Our mandrels improve well integrity, simplify valve handling and boost gas lift efficiency; reducing intervention needs.
  • Gas Lift Solutions Improve production efficiency and well integrity with Interwell’s gas lift solutions. Designed for challenging wells and environments, our gas lift technologies reduce operational interventions and support reliable performance. Gas Lift Valves (GLVs) handle scale, erosion and high pressures; helping to minimise downtime. Our retrofit systems provide an efficient alternative to recompletions, allowing upgrades while maintaining well integrity. Interwell’s approach supports long-term well performance.
  • Annular Sensor System Interwell’s Annular Sensor Systems monitor wellhead integrity with continuous pressure and temperature checks. They ensure safety under impact, reduce costs by eliminating traditional valves and provide both autonomous and manual pressure management. These systems enhance well safety and efficiency throughout the well lifecycle.
  • Surface Annular Systems Our Surface Annular Systems ensure wellhead integrity by addressing sustained annulus pressure (SAP) and enhancing barrier integrity. The Master Surface Annulus Safety Valve (MSAS™) and Hydraulic Surface Annulus Safety Valve (HSAS™) create independent barriers, meet regulatory standards and mitigate risks. These systems enhance safety, reduce lifecycle costs and improve operational reliability. Discover our portfolio of Surface Annular Systems below.
  • Annular Isolation Solutions Interwell’s Annular Isolation Solutions enhance well performance and extend field life. The CannSeal ZonalSeal uses patented epoxy technology to create precise annular seals in a single run, reducing water production. Compatible with standard electric wireline, it's ideal for vertical and horizontal wells, improving recovery and efficiently prolonging well life.
Image 31 mars 2025 12 58 03

Microleak Remediation & Gas-Lift Reinstatement with APS and GoLift HPHT

A microleak at a tubing connection kept a high-producing well in Norway shut down for an extended period. Due to rig-up height limits, a single-run HPHT APS straddle sealed the leak, followed by a multi-run GoLift straddle that reinstated gas lift, restored well integrity, and brought production back online.

2026

Year

NCS

Region

Challenge

A microleak in the completion string caused a high-producing well to be shut down for a long period of time. The initial investigation indicated a leak at the gas lift mandrel, which continued after installing the 425-550 HPHT multi-run (MR) GoLift straddle. A leak detection tool was then run and identified the leak at the tubing connection below the gas lift mandrel. A shorter single-run (SR) straddle was urgently required due to the rig-up height limitation on the rig.

A solution was proposed using a single-run (SR) straddle, run on tractor, to seal off the leaking connection. A few contingency scenarios were reviewed and kept on standby in case of issues reaching the required depth or the need to retrieve the single-run straddle due to rig-up height limitations. This was followed by a 425-550 HPHT MR GoLift straddle run to isolate the existing side pocket mandrel and reinstate gas lift in the completion for production, with an unloading valve preinstalled in the GoLift sub. The additional 
equipment required for the SR straddle solution was provided at short notice. Both straddles were successfully deployed and installed in the well, isolating the leak as per program and allowing production to continue using the planned unloading valve in the GoLift straddle.

Single-run APS

Value Created

Both straddle systems, the 425-550 APS HPHT SR and MR, were successfully installed in the well using an e-line stroker and precisely positioned at the determined depths. The systems isolated the leak point in the completion and brought production back online in a timely manner, without any equipment failures. The solution also re-established well integrity, which was a key objective for this well. The intervention demonstrates how a targeted retrofit solution can extend well life and enable production recovery.

Key Capabilities

→ ISO 14310 V0 qualified fully retrievable single-run and multi-run HPHT APS
→ Multi-run APS with GoLift sub, with unloading valve to restore gas lift functionality 
→ Cost efficient by avoiding an expensive sidetrack or workover

Related Products

Gas Lift Solutions

GoLift™

  • Cost-effective
  • No workover needed
  • Incorporates barrier qualified GLV and V0 packer
GoLift Retrievable Gas Lift Straddle enables controlled gas lift retrofits within production tubing, avoiding costly workovers
Application area
Production Optimisation Rigless Installation of VXT
Straddle Solutions

Custom Straddle

  • Slim design, large ID. Ideal for workover applications and flow capabilities
  • Modular design for versatile and various applications
  • Barrier qualified to highest standard
Application area
Completion Repair Production Optimisation Temporary P&A Well Integrity +1

Custom Solutions

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