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• Region: All
• Date: Nov, 2021

Welltec has launched a fully revised and transformed design of the pioneering Well Tractor conveyance solution, the Well Tractor 212 CVT, equipped with Continuous Variable Tractoring technology.

To make operations faster and more efficient than ever before, the new CVT system automatically maximises speed and power at all times, optimising every conveyance run.

Welltec VP Sales & Marketing, Alex Nicodimou, commented, “The Well Tractor remains a key service that we provide, it’s the foundation of everything that we do in conveyance and a solid base for our powered mechanical interventions platform. It’s what started the entire domain of interventions on wireline.

“Now our engineers are bringing something special to the market that will ensure we continue to lead in conveyance solutions.”

In addition to the new Continuous Variable Tractoring system, the new Well Tractor offers a whole host of innovative functionality and performance features, including a heavily revised electronics package that is rated to higher temperature demands within a more robust architecture. It also allows for full two-way surface control that can send commands to the tool downhole and receive diagnostics back at surface.

Traditional conveyance platforms are driven hydraulically by a pump, and in many cases, that downhole hydraulic pump is a shared asset that powers multiple wheel sections downhole. The Well Tractor CVT is configured so that each wheel section has its own power unit. These new hydraulic units and wheel sections are shorter and more powerful than ever before, resulting in a system that operates as multiple individual tractors downhole with inherent redundancy, without compromising on overall length. In the event that any one section meets a restriction of any kind, the other sections remain free to power themselves without any detrimental effect.

Building on more than 25 years of knowledge and experience, the Well Tractor CVT is the next phase in development of Welltec’s conveyance technology.

• Region: West Africa
• Date: Nov, 2021

In March 2021 a panel of industry experts met to discuss the challenges and opportunities of riserless light well intervention (RLWI) in sub-Saharan African (SSA) and, half a year on from that spirited debate, as part of the Offshore Well Intervention West Africa 2021 conference the party reconvened to discern if anything has changed.

Sola Adekunle, CEO, Cranium Engineering reprised his role as host and began by outlining some global changes to the oil and gas market in this time. He noted that in November 2020 oil prices were sat at US$37 per barrel, rising to US$63 on 1 March. At this time, boarders were still more or less closed, lockdown restrictions were still in place and generally Covid-19 was having a huge impact on business.

Six months on, the pandemic is still here but with the distribution of vaccines in full flow the world has opened up, industries are recovering and, as of 4 October, oil prices had climbed to US$82.95 per barrel.

RLWI in a recovering market

During the last session the panellists explored the benefits of RLWI by commenting that operators can achieve the majority of their objectives at a much lower cost and this presented a significant opportunity to capture the low hanging fruits of oil production. Since then, Adekunle asked, has this been recognised in SSA? And has the region adopted this method of well intervention to alleviate it’s rapidly ageing well stock.

New member of the panel Paul Stein, Commercial Director of Baker Hughes, said, “Globally it is a bit mixed in terms of RLWI despite the oil price going up. We are certainly seeing more tendering and early engagement with clients in this space but there is a split in customers. Tried and tested customers have RLWI in their core business and some are consistently undertaking such campaigns.”

“However, particularly in West Africa there is a delay in operations taking place which is maybe a reflection on the downturn of capability and knowledge within untested companies. It is also a significant investment for operators to pitch internally and many companies do not have that pot of money set aside for interventions. Now is the time to support clients to realise the production gains that can be achieved; particularly in West Africa which has an ageing well stock. I believe RLWI has a big place in the region.”

While there has been hesitation to undertake RLWI campaigns, this has not been the case with BP. Matthew Vick, Senior Subsea Wells Engineer, BP, explained that his company had continued with these operations and had just wrapped up a campaign in Angola. For the future it had already started the leg work for another campaign in the future alongside major campaigns in the Gulf of Mexico and the North Sea. For his company, “Light well intervention has become a routine operation at this point.”

Feyisola Okungbowa, Executive Director, Baker Hughes, added that there was definitely a lot more upfront activity but this was not, as yet, really translating into actual business in the region.

She said, “We do have some operators in SSA executing currently but with the ageing stock that we spoke about last time the coverage is still not there compared to other regions. With the improved oil price we are having discussions on more oil creation and yet I am still wondering why we are not seeing the market use light well intervention ‒ a low hanging fruit which can be used to boost production.”

The panellists noted that perhaps there was an unrealistic expectation for this uptake to happen quickly and, in reality, senior executives need more time to truly understand the benefits of light well intervention. This education journey has not been helped by the long pause of operations during Covid-19.

Encouraging RLWI

With the challenges listed the panellists then turned to discussing how they can be mitigated to encourage more campaigns of this nature in the region. Picking up on education, Vick noted that the benefits of RLWI can be conveyed by communication within the industry. He said, “We love sharing out lessons and we like it when other operators share theirs. The more something is used the more efficient it becomes and this will drive uptake.”

In this vein, collaboration is also high on the list. Intervention campaigns can be very costly for less developed regions such as West Africa as often specialised equipment must be brought in and this might prove not economically viable if only a few wells are targeted. However, the panellists explained, this expenditure can be cut if split between several operators partnering on the same campaign. This would also result in longer campaigns which would, the longer they go on, drive efficiency and thus capture more value: Vick noted that the biggest return on value is usually achieved on the 5th/6th well onwards when engineers start to work through the kinks.

To achieve this, contracting strategies are paramount. Another new member, Vidar Sten-Halvorsen, Subject Matter Expert-Well Intervention at Havfram, noted, “It is important to have a clear agreement up front on who is doing what and how they are going to work together. Agree on contractual issues early and then everyone is in the same boat with the same agenda.”

Vick added, “A one-team mentality is critical and having that formally defined is very important. Make sure everyone is on the same page, has their relationships clearly defined and agree to it up front.”

Stein commented that Baker Hughes has a great track record in SSA with countries such as Ghana and is capable of conducting operations in other waters across the region as well. He noted that his company is more than happy to work with other service companies in order to unlock the RLWI commercial potential that SSA holds.

Okungbowa added that their local content strategy is second to none after spending the last three years training up local engineers. Because of this they have a great foundation from which to execute operations cheaper and faster, avoiding the need to bring in too many external personnel.

Finally, the panellists explained that with so many energy companies placing climate concerns high up on their agenda, light well intervention has the potential to help operators maintain production at a reduced carbon footprint.

Sten-Halvorsen said, “This is becoming more and more important from an operator point of view ‒ the footprint left behind after operations. Lighter vessels have lower fuel consumption and it is something that is really favouring this approach over the use of heavier units.”

A brighter future ahead?

Despite not as much uptake in the last six months as was expected, the panellists remained positive about the future of RLWI in SSA.

Sten-Halvorsen concluded, “Africa is the next big thing for well intervention and there is a huge price to win here going after intervention in West Africa.”

Stein added, “My aspiration is to be in a position to conduct multi-well campaigns in West Africa utilising the potential of light well intervention. The region could go from a place not really using this method to one that is driving. It has the potential to do that.”

Concluding another insightful session, Adekunle simply said, “It is the way to go. It is the future.”

• Region: West Africa
• Date: Nov, 2021

At the Offshore Well Intervention West Africa 2021 conference, Ejimofor Agbo, Senior Completions Engineer at Newcross Exploration and Production, presented a case study outlining his company’s new approach to wax removal.

Ejimofor began by commenting that wax production presents one of the most challenging flow assurance issues when not addressed in the well completion design stage. The problem occurs when paraffins precipitate when the production system temperate falls below the wax appearance temperature (WAT). The resulting wax deposits that form can cause blockages which reduce production rate and flowing tubing head pressure and, in some cases, can take production from 2,000 barrels down to zero.

There are three conventional methods of solving wax problems, but each has inherent issues:

-Mechanical: Utilises wax cutters and scrapers for cutting the wax and also scraping it off the metal surfaces of the tubing. This is widely used and is cost effective initially but over time it can be needed at more frequent intervals which increases the cost and risk.

-Thermal: Downhole electric heaters are used to improve the heat retention capability of the crude so that its temperature remains above the WAT. A useful solution however there is a number of associated challenges such as availability of power sources offshore, the heating up of tubulars and formation damage.

-Chemical: Utilises chemical solvents to dissolve the wax molecules and allow the crude to be flowed to the surface. The problem with this solution is it has to be treated on a case-by-case basis which means information about the reservoir must be known and it can be costly overtime. There are also issues around availability of chemicals and initial completion design to accommodate for chemical injection valve

These are the standard wax removal methods but, Agbo continued, there are alternative approaches to wax removal, you just need to be able to think outside of the box.

An alternative approach

This is how Ejimofor and the team approached one of their wells suffering from acute issues with wax deposits which he presented to the OWI WA attendees in an informative case study.

The AK-40 Well, located in an ageing field, was completed in 1992 in two non-waxy reservoirs. However in 2005 the well was recompleted as the only drainage point in X1.0 reservoir containing waxy crudes with no provisions taken to cater for wax deposition. When the well was opened in 2006 it had an oil production rate of 1,142 BOPD but subsequent production gave 1,100 BOPD with intermittent wax cutting required every six months. The start-up rate post-wax cutting activity continued to drop and the duration of production dropped from six months to three months and continued until it only lasted for a month after wax cutting intervention.

Ejimofor said, “This called for a more effective wax mitigation strategy. We needed to do something different and think outside the box to resolve this issue.”

This began with laboratory analysis by which they discovered that a solution of 60% xylene and 40% diesel was the most effective at dissolving the wax with 98% dissolution achieved. Additionally, through an oil sample, they discovered the WAT was around 91.4⁰F while a dynamic model indicated the WAT was between 94⁰F and 95⁰F. Finally, through a bottom hole pressure and temperature survey they found that the estimated depth of wax precipitation was established at 3,300 ft which corroborates with breakthrough depth in previous wax cutting interventions.

With this information, the company then turned to deciding which alternative wax removal methods they should utilise, with two available.

The first was the Wax Inhibition Tool (WIT) comprising of nine dissimilar metals combined to form an alloy. This tool acts as a catalyst which enables a change in the electrostatic potential of the fluid. It changes the electrostatic potential and produces a polarisation effect at the electron level of the molecules which prevents scale formation, corrosion of metal and paraffin wax deposition. Crude is sucked into the holes in the tool and when in contact with the alloys to break up the long chain hydrocarbon molecules thereby making the oil ‘slicker’ and flow better.

Ejimofor added in some places they call it “the wonder tool”.

The other option was a Capillary Injection System which injects chemical solvent downhole to aid in the dissolution of wax molecules and allows the crude to flow to the surface. This can only be internally installed in the tubing string and can be used in various applications including liquid loading, scale control, salt control, corrosion control, and more.

The company compared the two and, in this application, found that the Capillary Injection System was not as viable as it would require a complex deployment, multiple items would be POOH, there was a high risk of plugging, it required preventative maintenance and there would be a high installation cost.

On the other hand, the WIT had an easy deployment, only one piece would be POOH, it carried a low risk of plug, there was low maintenance required and the cost of installation was lower. It was therefore the clear choice.

Execution and results

With their solution chosen Newcross turned to the next stage and carried out tubing integrity via mechanical wax cutting on slickline followed by wellbore clean up with solvent soak (of the xylene/diesel solution) across the entire wellbore. This ensured that before the WIT was installed the entire wellbore was cleaned of wax deposits. They then ran inhole and installed the WIT at 4,000 ft (600 ft below the WAT depth previously discovered).

Ejimofor commented, “Since we have done that, in the past eight months production has been the same and we have not needed to cut wax in this time. It is flowing on its own and management has been very happy with the results.”

• Region: West Africa
• Date: Nov, 2021

At the Offshore Well Intervention West Africa 2021 conference, Todd Parker, CEO of Blue Spark Energy, explained how his company has developed a technology to utilise rapidly compressed, low-energy pulses to clear impediments in wellbores.

Since its first operation in 2011, Calgary-based Blue Spark Energy has focused on the electrification of intervention processes, including a new wireline tool that utilises compressed energy to generate a pulse for use in well intervention applications.

BlueSpark Technology utilises high-pulsed power by compressing electrical energy to create high power events. Abandoning the traditional use of power in well bore solutions, Blue Spark's solution reduces the amount of time energy is utilised in, thus increasing its output. As energy is further divided among smaller increments of time, power outputs become significantly larger.

The wireline solution utilises apprxoimately 1 kilojoule of energy compressed into a millionth of a second. This means that every time a tool is used, around 200MW is generated in a power pulse- manifested in a shockwave that can clear impediments, scale, organic materials or blockages. As well as impediment clearance, the wireline tool can be used for production stimulation.

Coaxial cables are often used for this application, with an external energy source supplying approximately 1 kilojoule (around two mobile phone batteries worth of power for an entire treatment).

Involving only a coaxial cable and power source, the solution has practically zero environmental impact, and offers a low-cost and low-footprint intervention compared to alternative methods, tackling several downhole challenges in wellbores.

Blue Spark Energy began its first operation in September 2011 and in that time it has been building up a track record to show the market that this is an effective and trustworthy tool which can solve a number of problems in the wellbore. Since 2011, the company has implemented more than 600 operations worldwide for more than 50 different companies.

Parker explained that of these 600 operations the company has acquired data from 267 oil wells. Of these, there was an average oil production increase of 262%. BlueSpark also collected data for 45 injection and disposal wells and the average change in production was a staggering increase of 413%.

In addition to being an effective tool for any type of well (including some applications within the geothermal space) Parker noted they have been working with some companies in their decommissioning operations. In this regard, the BlueSpark tool can be used for cleaning the casing prior to setting a barrier to improve the chance of it setting and sealing. This can reduce well abandonment costs by as much as 60% in complex cases and at least 20% in simpler cases.

Parker noted, “We are continuing to innovate and improve this technology. We think it is an excellent technology. This is a go-to solution and has a high degree of reliability in removing impediments affecting wellbore performance. We are now accepting more and more orders for it and we have multiple projects on the go today.”

• Region: West Africa
• Date: Nov, 2021

VAALCO Energy, Inc. (VAALCO) has completed two workovers at the Etame field offshore Gabon and added a total of approximately 1,050 gross barrels of crude oil per day.

As part of the campaign, VAALCO’s hydraulic workover unit (purchased in early 2021) was utilitied to rapidly mobilise and replace electrical submersible pump units. It was able to do this more efficiently than a drilling rig, which had cost saving benefits.

The longest producing ESP unit at Etame was replaced and upgraded in the workover of EEBOM-2H which increased production from about 500 gross BOPD (255 BOPD net) to approximately 1,400 gross BOPD (715 BOPD net).

Additionally both the upper and lower ESP units at the ET-12H well were replaced and the ESP design was configured at the same well. This restored production to 1,800 gross BOPD (920 BOPD net), an increase of approximately 150 gross BOPD (80 BODP net) compared to the average rate prior to the workover.

George Maxwell, VAALCO’s Chief Executive Officer, commented, “We are pleased with the results from these workovers, in particular, the 1,050 gross BOPD of additional production. We purchased the mobile hydraulic workover unit earlier this year to allow us to quickly and efficiently react to ESP failures and to proactively prevent ESP failures as we deemed necessary.

“This allows us to maximise production and even incrementally increase production, which is particularly attractive in the current price environment. We will continue to efficiently operate at Etame which generates strong cash flow to fund our accretive strategic initiatives.”

• Region: West Africa
• Date: Oct, 2021

At the Offshore Well Intervention West Africa 2021 conference, Rafael Bastardo, Vice President of Global Sales, Silverwell, outlined his company’s Digital Intelligent Artificial Lift (DIAL) system, designed to eliminate production uncertainty, instabilities, deferment and operational costs.

As Bastardo explained, gas lift production optimisation is crucial to the future of the offshore oil and gas industry enabling operators to capture real value on their associated assets. ExxonMobil, for example, stated that they evaluated a 22% average oil gain using an optimised gas lift programme.

Traditional legacy Injection Pressure Operated (IPO) gas lift systems (in use for a long time within the industry) have narrow operating windows, injection depth limits, difficulties in assessing lift effectiveness, requires intervention to optimise, and is very sensitive to well dynamics. For this reason, Silverwell developed and released the DIAL system.

DIAL is a production optimisation system which integrates in-well monitoring and control of gas lift well performance with surface analytics and automation. Each DIAL unit has up to six independent injection orifices (with different port sizes) which can be individually opened and closed from the surface without requiring a drop in casing pressure. The suite of tools is connected to the surface via a tubing encapsulated conductor (TEC) that provides power and communications. This allows for continuous optimisation of gas lifted fields, remotely and without intervention.

To mitigate the challenges experienced by legacy IPO systems, DIAL boasts keys features such as patented binary actuator technology; variable orifice size at any depth; pressure, temperature and flow data; remote monitoring and control; intelligent field-wide management; and no deviation limitation.

These allow operators to capture key benefits such as:
-10% to 40% uplift
-Reduce +20% gas consumption
-Mitigate instabilities
-Deeper injection
-Reduce OPEX by 20% to 30%
-Reduce HSE risk
-No deviation limit
-Multi-million dollar NPV increase
-Eliminate intervention (does not require slickline to operate or adjust).

Unit Specification:
-A collapse pressure rating of up to 6,000 psi, with a 7,500 psi pressure rating coming soon
-10,000 psi burst rate pressure
-125 degrees Celsius max rated temperature, with a 150 under development and testing
-Concentric and slimline profile
-Multiple units per well
-Binary Actuation Technology
-Maximum choked flow rate of 6mmscfd/unit
-Electron Beam welded construction.

Bastardo noted that operators can acquire real time data from each unit, control each valve independently through a sophisticated surface control system and see key information such as the status for injection rate velocity, critical flow indicators and recent events that occurred during logging operation. Operators without SCADA can use radio or satellite communication to send the DIAL system data directly to cloud services which can be accessed remotely.

Silverwell are currently in the process of advancing the technology even further and will soon release units with a fully automated gas lift production optimisation system, drawdown control and water cut management and mitigation of injection pressure instabilities.

A reliable solution

The technology is relatively new (came into the market in 2016) however the trial phase is now complete and there are 15 wells installed with DIAL units globally. They are expected to be installed in 23 wells offshore by Q1 2022.

DIAL units are designed for a lifetime of over 10 years and, Bastardo added, the estimated savings from eliminating intervention was “immense.” He presented several business cases where, in each case, the technology had been very well received by the operator and had achieved substantial returns on investment.

Bastardo added that the best candidate for this technology were those with high frequency or high-cost interventions, assets with dynamic reservoir conditions, deviated wells and ones with constrained surface injection capacity.

In 2022, Silverwell is looking at releasing the system for subsea applications with pressure rating of 10,000 psi.

• Region: North Sea
• Topics: Integrity
• Date: Oct, 2021

SRJ Technologies has announced that it has been awarded a new consulting contract and a contract extension totalling UK£100,000 by SBM Offshore.

The contract extension was won off the back of the successful completion of a previous contract to undertake detailed engineering analysis of SBM’s future FPSO designs. This was part of its Fast4ward programme.

Through the work, SBM will be able to optimise the design of machinery spaces without compromising integrity and long-term reliability. The contract extension covers additional in-depth engineering analysis to enable further FPSO design optimisation and to deliver additional cost savings.

The new consulting contract award is for a reliability analysis and maintenance optimisation to ensure safety system integrity on SBM’s FPSOs. The contract continues the consulting work SRJ has been delivering to SBM over the last year to support the ongoing implementation and roll out of a new ERP system across its fleet of FPSOs.

Alex Wood, CEO of SRJ, commented, “The SRJ consulting team is seeing great demand for its expertise in asset integrity management in all its forms – this cements our relationships with customers and gives us credibility as well as clear visibility of opportunities to sell our asset integrity solutions and products.”

• Region: Australia
• Topics: Decommissioning
• Date: Oct, 2021

The Centre of Decommissioning Australia (CODA) has appointed six industry leaders to form the organisation’s Supervisory Committee to bring increased strategic focus and expertise to the efforts to address decommissioning Australia’s aging oil and gas infrastructure.

CODA, which was established in March 2021, is uniquely positioned to drive collaboration in Australia’s oil and gas industry to collectively answer strategic questions about decommissioning options based on technical, safety and environmental knowledge. CODA's research shows there is more than $50bn of necessary offshore decommissioning work to be done — over half of which is anticipated to be started within the next ten years.

Francis Norman, CODA General Manager Decommissioning and Strategy, said the committee’s appointment marked a change of gear for CODA. He noted, “The support and input from a group of such experienced and engaged industry leaders will help accelerate CODA’s ability to work across the whole of Australian industry to build our domestic capability to address our own decommissioning needs, as well as position Australia to become a significant partner in the region’s decommissioning work.”

The committee consists of:
• Richard Perry — Decommissioning Manager, ExxonMobil Australia
• David Banks — Chief Technical & Marketing Officer, Santos Ltd
• Jay Southwell — APAC Subsea Services leader, Baker Hughes
• Brian Matthews — Marine, Subsea & Automation Manager, IAS Group
• Ineke Reyboz — Contracts and Commercial Consultant (independent member)
• Harvey Johnstone — Environment Director, International Association of Oil & Gas Producers (independent member)

“By applying research from the National Decommissioning Research Initiative, we and our industry partners will ensure Australia's future decommissioning activity will be built on independent and sound scientific research, providing the best possible outcomes for industry, environment and community,” said Norman.

Richard Perry, Decommissioning Manager, ExxonMobil Australia, said, “After an extensive history of successful resource development and energy supply across Australia, our national fields are starting to reach the end of their productive life leading to the dawn of a new industry, and with it, some fantastic opportunities.

“With the broad geographical expanse between major basins in Australia, CODA will be a crucial conduit to enable growth of this industry to be optimised for all parties throughout the supply chain and it is very exciting to be part of this journey.”

Jay Southwell, APAC Subsea Services leader, Baker Hughes, added, “The decommissioning era within Australia is swiftly gaining momentum, but it’s a complex subject. Strategic complexity requires an evolution in the way we share project and service information.

“With the launch of CODA, we now have a great opportunity to collaborate, share best global practices and make a real difference to support the Australian decommissioning sector to permit the safe removal of assets without impacting the environment.”

Contracts for CODA foundation phase projects have been recently awarded. Due for delivery in early 2022, these projects will build knowledge and understanding of the local decommissioning and recycling capability, provide Australian industry with an easily accessible digest of international best practice that can be used locally, and set out a pathway for innovation and new technologies for the industry. These include:

• Understanding the opportunity for local disposal and recycling pathways — Advisian
• Development of a decommissioning innovation and technology roadmap — Linch-pin
• Global review of decommissioning planning and execution learnings — Advisian

• Region: North Sea
• Date: Oct, 2021

Odfjell Well Services and Odfjell Energy have announced the launch of a plug and abandonment (P&A) and slot recovery alliance alongside companies within the energy industry.

The agreement has an initial duration of two years with an option to be extended. It has been titled, the ‘Odfjell Collaboration Alliance’.

The aim of this alliance is to provide a complete service offering of rig, modular rig, jacking unit, wireline, plugs and all other services needed to successfully execute projects within P&A or slot recovery operations. The focus will be initially in the Norwegian market, with ambitions to expand beyond the Norwegian Continental Shelf.

Kurt Meinert Fjell, senior vice-president of innovation and development, Odfjell Energy, commented, “We are delighted to announce the launch of this strategic alliance, a move which will provide a high-quality oil service solution within the energy market.

“Each member was chosen for their strong history, forward-thinking approach and commitment to quality, and brings their unique area of expertise to support the P&A or slot recovery activities. We are confident that the multi-operator approach will lead to cost-effective solutions that will benefit our clients.”

The Odfjell Collaboration Alliance is managed by Odfjell Energy and Odfjell Well Services. The members include TCO Group, Ardyne, Wellstrøm, Altus Intervention, Control Cutter, JWS Gruppen, Tyrfing Innovation, InterWell and Innovar Solutions.

• Region: Asia Pacific
• Topics: Integrity
• Date: Oct, 2021

One of India’s leading marine service providers, OCS Services Pvt. Ltd (OCS), has awarded Fugro a two year contract to support its asset integrity and corrosion management operations off the west coast of India.

Fugro has establish a reputation for offshore operational excellence and has cultivated a successful track record in India, both of which were taken into account when the contract was awarded. Fugro will help OCS deliver on ONGC’s Protective Coating of Process Platform Project 1 (PCPP1), an infrastructure project to maintain and refurbish 32 offshore platforms in 7 clusters.

For the first time in India, Fugro will provide survey Geo-data and positioning via remote support solutions controlled from one of its state-of-the-art remote operations centres (ROC). Fugro’s integrated digital solutions will allow OCS to identify debris, seabed features, and subsea pipelines and structures near Process Platform areas to protect the marine environment from future damage.

Remote support will also enable OCS to monitor their operations in real-time and thus enable early decision-making as the project progresses.

Sangram Dhote, Director at OCS, commented, “This collaborative approach will set a new standard to managing the safety of operations in the Mumbai High Field.”

Swaminathan Subramanian, Marine Asset Integrity Manager for Fugro in India, added, “We are very excited to be awarded this contract and are looking forward to collaborating with OCS on a successful project delivery that benefits from Fugro’s remote operations expertise and the highest safety standards.”

The project is expected to be completed by May 2023.

• Region: All
• Date: Oct, 2021

Interventek, a subsea engineering business, has launched a new API 17G qualified, in-riser subsea landing string system, named the ‘Revolution-7’.

The landing string is an advanced, 7-inch nominal, 10,000psi rated system incorporating Interventek’s unique Revolution safety valve – proven to provide superior shear-and-seal performance. The system also includes Interventek’s PowerPlus technology, which is a unique arrangement of a locally integrated, gas-accumulated power source.

The landing string incorporates lower and upper subsea test tree valves, a latch, a retainer valve and lubricator valve. A slick joint, shear sub and project specific adaptors enable space out in the BOP and interface with the tubing hanger running tool and landing string tubulars. The system components are integrated via pre-loaded connections which provide high operational performance and fatigue resistance.

The Revolution-7 landing string is market-ready and the first systems have already been dispatched to a customer.

The company believes the system is a stand-out solution, offering industry qualification to the highest standard, combined with advanced shear-seal valve technology, rapid failsafe gas-accumulated actuation, plus a range of technical, functional and cost benefits. The valve performs both cutting and sealing functions, using separate internal components, in a single rotation, reducing the need for the usual secondary valve to provide a post-cut seal.

With fewer, simpler components, the landing string system is compact and lightweight, but stronger and more fit-for-purpose. Supply lead time, redress and maintenance are faster, which in turn reduce project and lifetime costs. The system is suitable for deployment in all BOPs and its modular nature allows additional or alternative valve functions to be incorporated.

Gavin Cowie, managing director at Interventek, said, “Historically, operators requiring subsea landing string services have relied on a handful of tier one, integrated service companies that have their own fleet of proprietary systems. We work with both the operators and service companies to supply our advanced safety valves as system upgrades, where enhanced performance and functionality is demanded.

“In developing our offering, we are now delighted to be able to supply a complete subsea landing string system to a variety of customers in this market. We see a large and collaborative opportunity in providing cost-competitive and technically advanced solutions, to improve safety and operational efficiency for the wider industry.”

For subsea well completion, intervention, workover or decommissioning operations, a landing string is deployed from a floating vessel, via a marine riser, to enable safe and environmentally secure operations. The landing string system includes a subsea test tree which provides the capability to close in the well, cut any medium in the bore and disconnect in the event of an emergency.

The shear-and-seal Revolution valve technology used in the in-riser system is also compatible with open water, tree-on-tree abandonment and surface applications. Interventek is also working towards the provision of a subsea control system to complement their advanced landing string package.

Cowie added, “Our technology is modular and universal, allowing it to be scaled up or down in its configuration and capability, and integrated with other third-party equipment. We can offer simplified landing string systems, spanner joint systems, ultra-deep water systems and high-pressure, high-temperature systems depending on the field application.”

• Region: Gulf of Mexico
• Date: Oct, 2021

For the 7th edition of the Offshore Well Intervention Conference Gulf of Mexico, focus is turning to well intervention optimisation through innovative technologies in order to build a best-in-class workover strategy that suits the changing market.

Bhargava Ram Gundemoni, Global Solutions Specialist at 3M, presented at the OWI GOM virtual webinar in the lead up to the conference and revealed how his company’s innovative solution, the Ceramic Sand Control system, can allow operators to enhance their oil and gas production and increase productivity and profitability, ensuring a reasonable balance between OPEX and EOR to create value and yield.

Ram showcased field proven Ceramic Sand Screens technology with three case studies, revealing how different operators achieved a simplified sand control and the general key performance drivers in sand control selection by reducing equipment and personnel footprint, risk reduction to enhance safety and durability and finally, operational excellence - for increased productivity and increased return on investments.

Challenges and current market needs

The general market needs are to increase productivity for less cost and achieve less risk. Traditional practices used for the Sand Control Selection (SCS) process are based on mature technologies and methodologies that often fail to meet the key performance drivers. Mature technologies often rely on a metallic filter media which is used as the mechanical sand control barrier downhole. Metallics filter media metrologically has erosion limits that constrict the boundary condition of hydrocarbon productivity. If a more erosion resistant filter material can be utilised, the upper safe operational window can be extended limiting the risk of erosional failure and hot spotting of the downhole sand control system whilst optimising asset recovery where possible. In addition, offering greater longevity to downhole sand control through a material change reduces the reported millions of dollars companies employ in repairing wells with failed sand control.

Disrupting the traditional sand control approach

The solution is a change of metallic filter media to ceramic filter media of the screen. This has been achieved by integrating a full-body ceramic part in the form of rings on a pre-perforated base pipe on to which ceramic rings are stacked and hold with two end caps and with an external shroud on top. The stack of ceramic rings creates a slot opening which is designed for the application spec-in and the ceramic material at the inflow offers erosion resistance and therefore mitigating the hotspotting potential ‒ allowing the operator a wider operating window of productivity.

Ceramic Sand Screens have been proved by deployment in the industry both in green fields and in intervention wells, delivering operators operational simplicity, Reduced HSE Risk at lower Capex delivering higher productivity. In some cases, Ceramic Sand Screens has been an enabling technology to unlock production potential with faster return on investments.

Standardised field-wide approach with simplified stand-alone screen sand control

Ceramic Sand Screens unlocks the operator methodology to achieve a simplified and standardised sand control approach in wide range of reservoir conditions and well architecture as downhole sand control system in OH, cased hole on a rig or through tubing rigless applications. Ceramic Sand Screens have been deployed and delivered success in 120+ applications with homogenous, heterogeneous, well-sorted to poorly sorted, low to high fines reservoir of sand properties.

Ceramic Sand Screens are being utilised as an asset wide standard solution to stop proppant flow back in a stimulated well completion.

To learn more about this solution and the advantages it can offer for operators, Offshore Network sat down for an in-depth chat with Ram:

How does ceramic sand screen add value to hydraulic stimulated wells?
“In a hydraulic frac stimulated well completion method, proppant flow back is a challenge. If this is not controlled results in erosion of tubulars, Health Safety and Environment (HSE) issues to potential leak eventually leading to spills. Operators also face economical losses due to prolonged clean up phase post stimulation (additional rig cost due to stand-by) and increased erosion risk to the well jewellery during clean-up. The Ceramic Sand Screens offer an economical approach to dealing with proppant flowback either using rig or rigless deployment methodology.”

“We are offering the opportunity to deal with proppant mitigating the need of resin-coated gravel and in some instances need of gravel packing in stimulated wells. With our solution, the operator has flexibility to use a rigless approach to stimulate/ frac the required zone and then run ceramic sand screens on wireline/ slickline to set across the stimulated zone. The ceramic material is extremely hard in nature offering high resistance to hotspotting and erosion caused by high strength proppant material. This will protect against proppant production topside and restrict equipment from being damaged higher up. In addition to cost-saving and HSE benefits, much less energy is required for deployment, which means the operator leaves less of a carbon footprint by reducing the need of rig."

How this technology can be further utilised in conventional sand control applications by operators to gain value and unlock production potential from their existing standard well stock?
“Not only in stimulated wells, but ceramic sand screens have also extended the traditional operational envelope of ‘Stand-a-Alone’ screen application, proven in unconsolidated sandstone formation. This technology has enabled operators to unlock production potential utilisng less complex rigless deployment technique. There are many wells globally shut-in due to traditional primary sand control failures. Many thin bed reservoirs which are left behind the casing are uneconomic using a rig-based approach. Simplified Sand control methodology with Ceramic Screens can add additional cumulative hydrocarbon production from the existing well stock via an economic satisfied solution.”

Focusing on the upcoming OWI GOM conference, could you explain what operators in USA can take away from this technology to add value to their oil and gas producer fields in Gulf of Mexico?
“In the Gulf of Mexico, operators can adapt their approach with this enabling proven technology to add incremental value to their assets. This approach fits in nicely with the energy trends in the industry, especially in particular the industry thirst in looking at more effective way to address the challenges of ensuring operational excellence. Our solution is simple, flexible, can be implemented rig or rigless and can still yield high productivity proven globally.”

As of 29 September 2021, 3M has completed 121 installations for sand control with users globally consisting of 50% oil producers and 50% gas producers. The product also been qualified in alignment to ISO 17824 / API 19SS Standards.

To learn more about Ceramic Sand Screens, visit https://www.3m.com/3M/en_US/oil-and-gas-us/ceramic-sand-screens/

If interested in such a simplified solution to unlock the production potential assets by addressing sand control challenges, contact Bhargava Ram Gundemoni: This email address is being protected from spambots. You need JavaScript enabled to view it.