Topside

Interwell’s topside wellhead 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.


  • 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.
Drilling

We offer a wide range of solutions for temporary suspension, pressure testing, inflow testing and monitoring for the drilling phase.


  • 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, ensuring superior well performance, reliability and substantially reduce rig time during the installation phase and increase the well uptime during the production phase.


  • 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.
  • Production Optimization Prevent water influx, increase oil and gas production, and extend well lifespan. Isolate zones, retrofit gas lift, and optimize revenue through tailored solutions.
  • Interventionless Completion Installations Interwell enhances production and eliminates intervention needs during and after completion installations by providing remotely operated completion tools.
  • 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 minimizing rig time and interventions, providing a remotely controlled, pressure-cycled barrier compliant with ISO standards.
  • 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.
  • 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 providing the company a reduction of time and HSE risks.
  • Scale and corrosion management Enhance integrity, well uptime and ensure stable and continuous Chemical Injection (CI) by utilizing Interwell’s unique barrier qualified CI solutions.
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.


  • Production Optimization Prevent water influx, increase oil and gas production, and extend well lifespan. Isolate zones, retrofit gas lift, and optimize revenue through tailored solutions.
  • Annulus Isolation Isolate the annulus to prevent water influx, stop water production, and enhance oil and gas recovery, extending the life of your well.
  • Completion Repair Repair old and new completions, including setting packers, leak testing, and straddle operations. Achieve cost savings compared to a full new completion.
  • 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.
  • 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.
  • 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.
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 solidify to reinstate caprock integrity.


  • 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.
  • Zonal isolation 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.
  • 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.
  • 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.
New Energy

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 and 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.
  • Completion Repair Repair old and new completions, including setting packers, leak testing, and straddle operations. Achieve cost savings compared to a full new completion.
  • 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.
  • Zonal isolation 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.
  • 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.
  • Well integrity Re-establish well integrity, extend well lifespan, and increase revenue. Efficient, cost-effective solutions compared to new completions.
  • 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.
  • 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 providing the company a reduction of time and HSE risks.
  • Scale and corrosion management Enhance integrity, well uptime and ensure stable and continuous Chemical Injection (CI) by utilizing Interwell’s unique barrier qualified CI solutions.
  • P&A 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 solidify to reinstate caprock integrity.
  • Plugs and 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 minimize downtime, protect reservoirs, and optimize well performance during interventions and workover operations.
  • Completion Tools Explore our diverse portfolio of Completion Tools, including the Inter Remote Bypass Valve (IRBV) and Inter Remote Shatter Valve (IRSV), improve well performance and safety. These tools reduce wireline interventions, ensure seamless completions, and withstand extreme conditions, offering flexible, 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) stabilizes 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) stabilizes 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 and costs, and meets ISO 14310 V0 standards.
  • Setting tools Setting tools are essential for installing downhole isolation devices, enhancing well interventions and completions. Interwell’s tools, like the Electronic Setting Tool (EST) and Hydraulic Running Tool (HRT), offer control, versatility, and efficiency, simplifying operations, reducing risks, and ensuring 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 and Packer Add-ons Interwell’s Plug and 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 optimize 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 optimize 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. The NexLift SI and NexLift SI-B offer single-piece construction for enhanced strength and cost savings, while the NexLift RO features fewer welds to reduce failures. 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 minimize 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 (HSAS™) valve create independent barriers, meeting regulatory standards and mitigating 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 prolonging well life efficiently.


Topside

Interwell’s topside wellhead 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.


Well location
Drilling

We offer a wide range of solutions for temporary suspension, pressure testing, inflow testing and monitoring for the drilling phase.


Completion

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


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.


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 solidify to reinstate caprock integrity.


New Energy

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 and gas sector, we bring a unique perspective and a robust set of skills to the renewable energy landscape.


Choose Product type
  • P&A 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 solidify to reinstate caprock integrity.
  • Plugs and 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 minimize downtime, protect reservoirs, and optimize well performance during interventions and workover operations.
  • Completion Tools Explore our diverse portfolio of Completion Tools, including the Inter Remote Bypass Valve (IRBV) and Inter Remote Shatter Valve (IRSV), improve well performance and safety. These tools reduce wireline interventions, ensure seamless completions, and withstand extreme conditions, offering flexible, 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) stabilizes 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) stabilizes 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 and costs, and meets ISO 14310 V0 standards.
  • Setting tools Setting tools are essential for installing downhole isolation devices, enhancing well interventions and completions. Interwell’s tools, like the Electronic Setting Tool (EST) and Hydraulic Running Tool (HRT), offer control, versatility, and efficiency, simplifying operations, reducing risks, and ensuring 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 and Packer Add-ons Interwell’s Plug and 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 optimize 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 optimize 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. The NexLift SI and NexLift SI-B offer single-piece construction for enhanced strength and cost savings, while the NexLift RO features fewer welds to reduce failures. 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 minimize 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 (HSAS™) valve create independent barriers, meeting regulatory standards and mitigating 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 prolonging well life efficiently.
20240919 0906 Interwell Tenerife LR 09 steffenvidar jenssen fabelmedia 2

A Collaborative Approach to Maximise Recovery and Reduce Intervention Footprint

A UK North Sea operator aimed to boost oil recovery while cutting future well interventions.

North Sea

Region

2021

Year

NET 0

Maximised efficiency towards net zero

Challenge

A major UK North Sea operator was looking to maximise recovery from a subsea field during the “blowdown” stage of its lifecycle, but also reduce their carbon footprint by reducing the need for future well interventions. 

In blowdown, the gas cap will expand, and the oil and water columns will slump, requiring the completed interval of each well to be gradually moved deeper over time to enhance oil recovery. When carried out conventionally, this process requires multiple interventions over time to isolate the shallower perforations as they gas out, which in a subsea well can prove to be economically prohibitive.

The solution would need to restrict gas production from an upper zone whilst ensuring reservoir energy was maintained for oil production from the lower perforated intervals.As the operation was being carried out from a Light Well Intervention Vessel, the solution also had to be prepared with optional configurations to match production and saturation logging data gathered on location, be set in 5” liner, and be capable of passing through a 5-1/2” completion with a 4.267” minimum restriction ID.

Solution

Working in collaboration with Tendeka, Interwell proposed a custom Multi-Run Anchored Production Straddle (APS) with a 3.89” OD that would directly interface with a sub designed to house Tendeka’s FloSure Autonomous Inflow Control Devices (AICDs).

Unlike conventional Inflow Control Devices, AICDs react autonomously to the fluid properties at each perforation interval and allow initial oil production but restrict production from perforations with high gas flows as they develop by introducing an additional pressure drop.

Due to the potential risk of damage to the liner from blowdown, the operator wanted to ensure that they had sufficient primary and contingency equipment to give them the best chance of operational success, therefore a contingency Custom Multi-Run APS with a smaller 3.60” OD was also mobilised.

The AICD Subs directly interfaced with both the 3.89” and 3.60” OD APS solutions. The AICD Subs could house up to 40 AICDs with the ability to change out blanks and AICDs depending on the results of the production and saturation logging.

Prior to the APS being deployed, a Drift and Multi Finger Caliper run was carried out to identify if there were any unknown restrictions in the wellbore to ensure that the larger 3.89” OD straddle could be run to the required setting depth.

This was followed by a Production and Saturation logs run being carried out. The data from which was assessed and it was determined that the AICD Sub should be assembled with 8 AICDs.

The Mutli-Run APS lower module was run and correlated to a setting depth below the upper perforated interval determined by the logging data using eline and then set using the Electronic Setting Tool (EST) with real-time 
activation from surface.

The upper module, made up to the AICD Sub, was then run on e-line. Once the upper APS module stinger had engaged in the lower APS module female latch, the upper module was also set up using an EST with real-time activation from surface, positioning the AICD Sub with 8 AICDs over the upper perforated interval.

Key Capabilities

  • ISO 14310 V0 qualified, fully retrievable Multi-Run APS with large throughbore ID.
  • Collaborative solution with Tendeka FloSure AICDs.
  • Easily reconfigured on location to match logging data results.
  • Reduces the requirement for future well interventions and the associated emitted CO2.
  • Successfully installed in a subsea well from the LWIV.

Value Created

Once the well was brought back online, results showed that the system had successfully restricted gas and significantly increased oil production.

Surface facility production constraints were also improved resulting in anincreased oil production from the field.

The collaboration of two technologies offers a new way to reduce the intervention footprint by eliminating future well interventions, maximising efficiencies and contributing towards net zero.

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