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Subsea cleaning made simple

The field proven, cost efficient way to clean subsea equipment with no hoses, no topside support, 100% environmentally friendly. Used daily in the North Sea and elsewhere in the world

Explore SolidCitric
01

Install

ROV mounts the adapter and places the SolidCitric cartridge onto the interface.

02

Leave

The acid dissolves on its own, releasing acid downwards while your ROV is free to do other tasks.

03

Return

The ROV removes the adapter and waterjets the surface to clear loosened scale and surface corrosion.

What is SolidCitric?

Instead of running hoses from topside or using ROV compensators, a SolidCitric cartridge dissolves underwater, releasing a controlled downward flow of acid that loosens scale and corrosion within the adapter. It’s cleaner, safer and designed for real offshore conditions.

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Team

Team Jupa

Founded in 2012, Jupa is a Norway based privately owned solution provider to the international oil & gas industry. Jupa largely comprises highly skilled subsea engineers with a background from Equinor (Statoil), Subsea 7 and the aerospace industry among other things. An interesting fact is that 3 out of the 7 employees in Jupa are licensed pilots!

Endre Birkeland

Managing Director

+47 958 28 155
endre@jupa.no

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Hallvar Møller

Commercial Manager

+47 971 64 938
hallvar@jupa.no

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John Harald Schjelderup

Engineering Manager

+47 482 05 241
john@jupa.no

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Anton Ueland

Project Engineer

+47 479 40 240
anton@jupa.no

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John-Reidar Hov

Project Engineer

+47 988 67 229
john-reidar@jupa.no

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Magnus Dolmen

Project Engineer

+47 480 73 427
magnus@jupa.no

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Kathrine Pedersen

Logistics

+47 942 87 039
kathrine@jupa.no

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Some of our customers

Forsvaret

Jupa means “a great depth in the sea” when spoken in the west coast area of Sunnmøre, Norway.

Despite harsh weather and an unforgiving sea, small communities along the Norwegian coast have accomplished great achievements through hard work and relentless creativity. This is our heritage and we shall strive to work, behave, and build our company culture based on these same values.

In Jupa, we have high focus on reviewing our produced documentation and designs in order to ensure that they are practical, to-the-point, and easy to understand.

Our main goal is to ensure that our procedures and products cause zero harm to personnel and the environment, and no damage to equipment. Jupa has developed a quality management system, which helps us to stay on track while doing this, for every project. Feedback from customers and personnel offshore is also highly valued and helps us maintain a continuous improvement.

Questions we often get

How much time can I save by using SolidCitric?

It depends – poor answer, we know. The severity of the lime scaling affects the time one will save, but in reality, the most important factor is whether you have other things you would rather be doing with the ROV instead of acid cleaning. The best answer we can give you is that you must look at your past operations and determine how much time you typically spend on acid cleaning.

Assuming that you have other things to do with your operational time then please consider nearly all the time you have spent on acid cleaning today as time you would have saved by using our product.

We have heard that our clients have saved 12 hours in some instances, other times 6 hours. It really varies on a case‐to‐case basis, as stated earlier above. However, imagine 12 hours saved with a stuck valve on for instance a rig at a million dollar day rate; your shareholders should love that!

We like to say, “Let it work as long as possible”. At a very minimum, it should be allowed to work for 2-4 hours.

Very important point follows: It would be very sad the moment a vessel, rig or ROV has a hold-up in operations because they are waiting for our product to work. This defies the entire winning purpose with our product. We believe that with good operational planning the acid can work for a long time if it is put to work as early as possible after arriving in field.

An Example: A Client installed our product at Field A before continuing to Field B. When they later returned to do work at Field A everything they needed cleaned was finished.

Another example: Install our product as the first point on the list during an as-found survey. Later on, once this is complete, then for instance valves that are to be operated during a commissioning sequence will have been cleaned and will less likely require high breakout torque values.

This mainly depends on three factors.

1) The enclosed volume of water that can be saturated with acid. If this volume is small and there is little loss to the environment, then the acid will stop dissolving once the enclosed volume has reached full saturation.

2) The ambient water temperature. Like sugar, it dissolves faster in warm water than in cold water.

3) The water depth. Greater depth means greater hydrostatic pressure. A Polycarbonate tube that is open in one end encloses our acid. Due to this, it dissolves at an initially steady rate. However, external water pressure will create “channels” into the solid crystalline grains and hence increase the area exposed to water. Greater water depth will accelerate the dissolving rate.

An operational example: In the North Sea, at typically 200m water depth, our 6 kg acid cartridge will dissolve in approximately 2‐3 hours if allowed to dissolve into an unlimited volume. Our 12 kg acid cartridge will dissolve in approximately 4‐6 hours under the same conditions.

Important note: Tests in our workshop revealed that the pH value in the entrapped water around the asset interface drops rapidly just a few minutes after the acid starts dissolving. In other words, the water does not need to be fully saturated before the treatment becomes effective.

Yes. SolidCitric is manufactured from 100% citric acid that is even approved for human consumption, although not recommended in larger quantities.

Citric acid has been used for subsea acid cleaning purposes for decades. It is listed as a “green” PLONOR chemical with the relevant authorities, both in Norway and abroad. We have a SolidCitric MSDS as well as HOCNF and CEFAS* documentation available upon request. It can be used subsea without any limitations.

*SolidCitric is registered in CEFAS as number 28132 and it is classified as a group E & PLONOR product.

To date, we do not know if there are any limitations. We know that our clients use it at more than 1500 meters water depth without any problems. The important thing is that one does not remove the protection cap before the installation of the cartridge is imminent. Waving the cartridge around in the ROV manipulator without the protection cap will lead to a “wash out” of some of the SolidCitric acid; this is an unnecessary loss that should be avoided.

Just regard our SolidCitric cartridge to be the equivalent of a dish washing tablet. It’s a homogenous solid which dissolves slowly in water. No moving parts, just chemistry in action. It’s also fully autonomous and it negates the need for a subsea compensator (i.e. spring-loaded tank) or hoses from the deck of a rig or vessel. Any ROV crew will confirm that our product is nothing but a pleasure to work with.

First, please check our website and see if we already have an adapter for your particular interface in our portfolio. If we don’t – no worries – get in touch with us, send us a drawing and we will do the following:

Design an adapter which will fit your interface and send you a drawing along with a quote. If it is a common interface (i.e. likely to be requested by someone else in the future) then we are happy to rent it to you. If it is highly unusual then you will need to buy it as it will not add any value to our rental pool.

If you after receiving a quote would like to proceed then we will start manufacturing the adapter which you require. In addition to designing, we also manufacture* most parts ourselves, inhouse. This ensures that we maintain the consistently good quality and fast delivery time which our customers require.

* We currently own and operate the following CNC machines;
3-axis Multicam Apex router
4-axis mill/turn lathe (Haas ST-30Y)
3-axis vertical mill (Okuma Genos 560Ve)

Our SolidCitric cartridge releases a steady trickle of acid which is negatively buoyant in seawater and for it to work we deliver “adapters” which directs the acid to the exact location where you want to clean.

These adapters are also designed to minimize the volume which requires saturation and minimize leakage/loss to the ambient seawater on the outside. Reference is made to our animation on our website.