Industrial

As a result of the upgrade, production increased and performance was optimised. (Image source: CS Combustion)

CS Combustion Solutions recently enhanced the capacity and efficiency of a sulfuric acid production plant located in Africa’s Copperbelt region, where demand for sulfuric acid is crucial in mining applications such as leaching copper and cobalt

Faced with growing demand, the plant needed to increase production while reducing operational costs and improving reliability. Through targeted improvements, CS increased daily production from 2,200 to 3,000 tons and optimised the plant’s overall performance.

Challenges before optimisation

Prior to the upgrade, the plant faced several challenges, including incomplete combustion, which led to sulfur droplets fouling downstream equipment like the waste heat boiler (WHB) and catalyst beds, increasing system pressure and requiring frequent shutdowns for maintenance. Clogging issues with conventional pressure atomisers resulted in frequent, costly nozzle replacements, while poor droplet atomisation caused hotspots in the refractory lining, increasing wear and reducing reliability.

Key measures implemented

CS Combustion Solutions tackled these issues with the following measures:
1. Ultrasonic atomisation: Replacing pressure atomisers with ultrasonic nozzles reduced droplet size from 400 to 110 µm, which minimised fouling, improved combustion, and protected the refractory lining from localised heat.
2. Swirl bodies: Introducing swirl bodies created rotational motion in the combustion air, enhancing flame formation and leading to more efficient sulfur combustion.
3. VectorWall installation: Replacing the plant’s original baffle walls with a VectorWall improved mixing within the combustion chamber, reduced hotspots, and prevented unreacted sulfur carryover to downstream components.
4. CFD analysis: A Computational Fluid Dynamics (CFD) study simulated and optimized the modifications prior to implementation, ensuring targeted performance improvements.

Results and benefits

With these enhancements, the plant boosted production capacity by 30%, enabling 40 tons of sulfur incineration per hour. The new configuration allows maintenance of sulfur guns without stopping operations, reducing downtime and saving US$160,000 annually by decreasing pressure drop. Additionally, precise ultrasonic atomisation prevented sulfur buildup on the refractory, extending its lifespan.

This case study highlights the importance of innovative combustion technologies and detailed pre-implementation analysis, offering valuable insights for facilities facing similar challenges in optimising sulfuric acid production.

SandTrapXL mitigates solids production. (Image source: Halliburton)

Halliburton has launched SandTrap XL consolidation service for sand control, a chemical resin consolidation technology to stop the production of formation sand

SandTrap XL sand control service employs an externally activated, low-viscosity resin system that provides consolidation strength to the formation grains without compromising rock permeability. Unlike internally activated resin systems, there are no restrictions on pumping or activation time to allow treatment of longer intervals.

The SandTrap XL system excels in the treatment of high-clay content minerology up to 25% and adapts to various formation mineralogies. It provides thermal stability above 550°F (287°C). This allows it to control sand in heavy oil reservoirs under enhanced oil recovery methods, such as steam flooding. As part of Halliburton’s portfolio of remedial solutions, SandTrap XL mitigates solids production, including formation sand and fines migration. This approach helps ensure the long-term stability and productivity of oil wells to address the needs of operators in diverse geological environments.

“Excessive sand production remains an issue in our industry,” said Luke Holderman, vice president, Production Solutions and Pipeline & Process Services. “SandTrap XL empowers our customers to maximise asset value through enhanced well performance and extended asset life. Through customised chemical consolidation, SandTrap XL provides a reliable solution for mature fields and unconsolidated reservoirs to ensure long-term productivity and efficiency.”

The A1-96/3 well is located around 35 km from the Wafa field. (Image source: Adobe Stock)

Eni and BP have resumed their exploration activities in Libya after halting drilling operations in the onshore region in 2014, according to Libya’s National Oil Corporation (NOC)

This follows the formal revocation of force majeure status by Eni and NOC in August 2023 on exploration areas A&B (onshore) and C (offshore), where Eni is operator with 42.5% along with bp (42.5%) and Libya Investment Authority (15%), as a result of a favourable security assessment. Some of these areas are close to the Wafa gas facilities that export production to Italy.

On October 26, Eni began its exploration activities in the Area B (96/3) of Ghadames Basin, where the first exploratory well, A1-96/3 (Hasheem Prospect), was drilled. This well is the first under the contractual obligations for Area B in Ghadames Basin, according to the Fourth Bid Round Contract of 2007. Mellitah Oil & Gas, which has extensive experience in the region, particularly in developing and managing the Wafa field, is overseeing the drilling operations and all related activities for this well.

Several promising geological formations in the A1-96/3 well are set to be tested, which are expected to contain both oil and gas. The well is projected to reach a final depth of approximately 3,147 m.
The A1-96/3 well is located around 35 km from the Wafa field and approximately 650 km from the capital, Tripoli.

Eni is the leading international gas producer in Libya, where it has been operating since 1959, and currently has a large portfolio of assets in exploration, production and development. Production activities are operated through the joint venture company Mellitah Oil and Gas BV (Eni 50%, NOC 50%).

Repsol and OMV are also set to restart operations sin the Murzuq Basin and Sirte Basin respectively, NOC says.

The oil and gas industry has emerged as a significant adopter of the technology. (Image source: GlobalData)

Data and analytics company GlobalData has released a thematic report, Robotics in Oil and Gas, which highlights the role of major oil and gas companies, such as ADNOC, BP, Eni, Equinor, ExxonMobil, Repsol, Rosneft, Shell, and TotalEnergies in the development and adoption of robotics to enhance safety and productivity on the field

With the applications of robotics continuously evolving, the oil and gas industry has emerged as a significant adopter of the technology to improve safety and efficiency of operations. According to the GlobalData report, robots equipped with advanced technologies are yielding increasingly positive results, bringing a continued transformation in the operations of oil and gas companies.

Ravindra Puranik, oil and gas analyst at GlobalData, said, “Robots are proving invaluable to execute complex tasks at production facilities, thereby protecting workers from hazardous environments and reducing the likelihood of costly shutdowns. As a result, companies such as Equinor, TotalEnergies, and Shell are deploying them to work alongside humans on offshore sites. For instance, robotic automation can manage remote operations, such as those conducted on Equinor's Oseberg H platform in the North Sea. Their ability to perform repetitive and mundane tasks with minimal errors is saving time and internal resources for companies. Furthermore, it allows them to deploy field technicians on more critical issues.”

Oil and gas operations are labor-intensive and involve numerous repetitive tasks, many of which occur in hazardous environments and face various obstacles. Robotics presents an excellent solution to many challenges within the industry, as they can handle more strenuous tasks and complex procedures more effectively than humans.

Puranik said, “Robots provide greater reliability and efficiency in completing assigned tasks while also enhancing operational safety. The integration of terrestrial, aerial, and underwater robots is already playing a crucial role in several high-stakes oil and gas projects throughout the value chain. French oil major TotalEnergies, in collaboration with Oceaneering, recently conducted a pilot inspection of subsea pipelines in the North Sea using autonomous underwater vehicles (AUVs).”
Robots can access hard-to-reach areas, carry out tasks beyond human capabilities, and operate continuously without needing breaks. Hence, they are being utilized as effective solutions for conducting inspections in difficult or hazardous environments, thereby avoiding preventing human exposure to such sites. Recently, cleaning of storage tanks is emerging as another prominent use case for robotics with companies, such as Saudi Aramco, Woodside, SK Innovation, and Indian Oil Corp, exploring the potential of robotic crawlers in this application.“Advancements in technology have equipped robots to effectively replace field personnel on oil rigs. Additionally, there is an increase in collaboration between oil and gas companies and technology vendors, enabling the diversification of robotic use cases with the integration of AI, IoT, cloud, and edge computing. These developments are anticipated to drive future growth in robotics within the oil and gas sector, reducing risks to human workers who operate alongside heavy machinery in often remote and challenging environments,” said Puranik.