Fuelling Efficiency and Growth for Oil and Gas, Chemical and Petrochemical Clients.
Effective extraction, production, transmission, and distribution systems are crucial for oil and gas operations. Whether repairing a pipeline or upgrading a facility, having a design partner who understands your needs and minimizes disruptions is essential. At Ayesa, we deliver durable, high-quality solutions that optimize upstream, midstream, and downstream assets and processes while adhering to rigorous safety standards.



High-value solutions that bring new perspectives


Production Facilities and Pipelines
We offer comprehensive services in the design, upgrade, and management of production facilities and pipelines. Our extensive experience includes enhancing critical assets such as offshore and onshore extraction facilities, terminals, processing plants, substations, refineries, LNG facilities, compressors and pumping stations. We also integrate renewable energy solutions to maximize efficiency and sustainability in these critical infrastructures.
Multi-disciplinary Approach
Our multidisciplinary approach ensures that studies and feasibility analyses form the foundation of our solutions. We provide storage solutions for various types of oil and gas, including renewable gases, and manage associated pipelines. We specialize in integrating pipelines and infrastructure across all stages of the supply chain while incorporating renewable energy to enhance infrastructure efficiency and sustainability.
Industrial Engineering Heritage
With over 20 years of experience, Ayesa is deeply rooted in industrial engineering within the oil, gas, chemical, and petrochemical industries. We excel in complex chemical reaction processes and unit operations, utilizing advanced calculation and simulation tools to ensure precision and efficiency. Whether working independently or with leading international licensees, our services guarantee that projects are completed safely, reliably, and in compliance with regulatory standards. Our extensive experience enables us to enhance efficiency, optimize processes, and drive innovation across these industries.
Trusted by Global Oil and Gas Clients
Our robust matrix structure and global presence allow us to efficiently manage projects up to 250,000 man-hours. Our reputation for excellence is reflected in the trust placed in us by leading oil companies such as Repsol, Cepsa, Enagás, Petroperú, and Petrobras.
Environmental and Sectoral Considerations
Ayesa provides flexible solutions to help clients in the oil, gas, and chemicals industries address environmental and sustainability guidelines, including monitoring and assessment.


Cutting-edge oil and gas solutions


Upstream Advisory
Ayesa provides comprehensive services for exploration and production companies, drilling operators, and field development projects. Our services include:
- Engineering Development: We manage major investment projects for existing and new production plants, covering basic, conceptual, and detailed engineering, FEED (Front End Engineering Design), detail engineering, HAZOPs (Hazard and Operability Studies), construction supervision, and plant enhancement.
- Production Plant Upgrades: We install new reactors, exchangers, and stripper disks and modify plants to handle a diverse range of crude oils, including naphthenic, sweet, sour, light, and heavy crudes. Our services include updating valves, pumps, pig traps, interconnection lines, and electrical substations to ensure optimal performance.
- Facility Installation: We oversee the installation of new crude oil tanks and modernize coagulation areas. This involves detailed design and engineering across multiple disciplines, including power systems, civil engineering, instrumentation, automation, piping, mechanical systems, and steel structures.
- Construction Supervision: We provide procurement and construction supervision for offshore and onshore facilities, encompassing process engineering, mechanical equipment, piping, civil works, and electrical and instrumentation systems.
Midstream Advisory
In the midstream sector, Ayesa delivers comprehensive solutions for transportation and storage, including:
- Pipeline Projects: We design and supervise pipelines including oil pipelines and gas ducts. Projects such as the North Peru Pipeline span over 1,000 kilometres and traverse complex terrain.
- Crude Oil Unloading: We support the transfer of crude oil unloading operations to new facilities, including designing control rooms and installing booster pumps.
- Storage and Distribution: We design and construct storage and distribution terminals and tanks, incorporating essential fire suppression systems to ensure safety and compliance with industry standards. These systems detect, control, and extinguish fires, protecting valuable assets and minimizing risk.
Downstream Advisory
Ayesa assists clients in refining, distribution, and energy efficiencies through:
- LNG Filling Stations: We offer comprehensive engineering services for LNG filling stations, supporting applications such as marine bunkering, vehicle refuelling, industrial processes, power generation, and commercial use. Our services include process design, mechanical specifications, civil works, electrical design, and instrumentation.
- Thermal Energy Recovery: At LNG regasification plants like the one in Barcelona, Spain, we capture and reuse cold energy from the regasification process. This includes installing central cooling units and managing piping and control systems.
- Retrofitting Distribution Plants: We specialise in retrofitting distribution plants to replace traditional fuel systems with renewable forms of energy including renewable gases. This process includes upgrading infrastructure, modifying existing systems, and ensuring a seamless transition to more sustainable energy sources.
Key Assets include
- Piping and Terminal Facilities: Designing and upgrading piping systems and new terminal facilities.
- Pump Stations: Engineering and design for new pump stations, including capital maintenance like pump replacements and equipment upgrades.
- Gas and Liquids Facilities: Designing gas compressor stations, metering facilities, district regulation stations, and systems for regulation, odorization, heating, and metering.
- Power and Control Systems: Designing power substations and control systems.