China's largest offshore shallow lithologic oilfield project has been fully put into operation

On May 27, the first-phase development project of the Kenli 10-2 Oilfield Group, China’s largest offshore shallow lithologic oilfield, was fully put into operation. The oilfield’s daily crude oil output exceeds 2,800 tons, providing important support for the sustained stable production and output increase of the Bohai Oilfield, the country’s largest crude oil production base.

The Kenli 10-2 Oilfield is located in the southern waters of the Bohai Sea, with an average water depth of about 20 meters and proven geological reserves exceeding 100 million tons. The first-phase development project includes the construction of one central processing platform and two unmanned wellhead platforms, with a total of 79 development wells. The oil and gas in the oilfield are mainly stored in narrow, curved sand bodies that intertwine and interweave with each other, resembling the crisscrossing shadows of tree branches on the ground, presenting a typical "branch-like" morphology. This is the first time such a branch-like heavy oil reservoir has been developed offshore China. The successful commissioning of this oilfield group marks a further improvement in China’s technological system for developing offshore complex lithologic oilfields. As the first shallow billion ton level lithologic oilfield discovered in the depression belt of the Bohai Bay Basin, its development experience will provide a reference for the subsequent utilization of similar reserves and help enhance the oil and gas supply capacity of the Bohai Sea area.

The extraction of oil and natural gas cannot be achieved without separation equipment.

Shanghai SAGA Offshore Engineering Co., Ltd., established in Shanghai in 2016, is a modern technology enterprise integrating R&D, design, production, and service. We are dedicated to developing separation and filtration equipment for the oil, gas, and petrochemical industries. Our high-efficiency product portfolio includes de-oiling/dewatering hydrocyclones, desanders for micron-sized particles, and compact flotation units. We provide complete skid-mounted solutions and also offer third-party equipment retrofitting and after-sales services. Holding multiple proprietary patents and operating under a DNV-GL certified ISO-9001, ISO-14001, and ISO-45001 management system, we deliver optimized process solutions, precise product design, strict adherence to engineering specifications, and ongoing operational support.

Our high-efficiency cyclone desanders, renowned for their exceptional 98% separation rate, have earned recognition from international energy leaders. Constructed with advanced wear-resistant ceramics, these units achieve 98% removal of particles as fine as 0.5 microns in gas streams. This capability enables the reinjection of produced gas for miscible flooding in low-permeability reservoirs, a key solution for enhancing oil recovery in challenging formations. Alternatively, they can treat produced water, removing 98% of particles larger than 2 microns for direct reinjection, thereby boosting water-flood efficiency while minimizing environmental impact.

Our new product—The High Efficiency Ultra-Fine Particle Desander is a liquid-solid separation device that utilizes an efficient centrifugal principle to separate suspended impurities—such as solids in produced water, seawater, condensate, fine particles in high-viscosity liquids, and catalyst powder in reactors—from fluids (liquids, gases, or gas-liquid mixtures). It effectively removes solid particles with sizes down to 2 microns (at 98% efficiency) or smaller.

The High Efficiency Ultra-Fine Particle Desanderdelivers high sand removal efficiency, capable of removing solid particles down to 2 microns. The equipment features a compact footprint, requires no external power or chemical additives, and has a service life of approximately 20 years. It offers online sand discharge capability without the need for production shutdown.

Proven in major global fields operated by CNOOC, CNPC, Petronas, and others across Southeast Asia, SAGA desanders are deployed on wellhead and production platforms. They provide reliable solids removal from gas, well fluids, and condensate, and are critical for seawater purification, production stream protection, and water injection/flooding programs.

Beyond desanders, SAGA offers a portfolio of acclaimed separation technologies. Our product line includes membrane systems for natural gas CO₂ removal, deoiling hydrocyclones, high-performance compact flotation units (CFUs), shale gas desanding, Cyclonic dewatering package with produced water treatment, and multi-chamber hydrocyclones, delivering comprehensive solutions for the industry's toughest challenges.