CNOOC Shenzhen Branch Enping 15-1 Oilfield Cluster Project

Overview

China National Offshore Oil Corporation (CNOOC) Shenzhen Branch Enping 15-1 Oilfield Cluster is the first offshore carbon capture, utilization, and storage (CCUS) well in China. Over the next decade, the project is expected to inject over 1 million tons of carbon dioxide into subsea formations while enhancing oil recovery, playing a vital role in ensuring energy security and advancing carbon peak and neutrality goals.

Enping 15-1: Asia’s New Offshore Powerhouse

Located about 200 km southwest of Shenzhen in waters averaging 90 meters deep, the Enping 15-1 cluster comprises 4 new oilfields with 48 planned production wells. It features Asia’s largest offshore oil production platform—Enping 15-1—and the first offshore CO₂ storage facility of China. At peak production, the cluster will yield nearly 5,000 tons of crude oil per day, bolstering economic growth in the Guangdong-Hong Kong-Macao Greater Bay Area.

As the core facility of the cluster, the Enping 15-1 platform stands 160 meters tall, weighs over 30,000 tons, and has a deck area equivalent to 10 basketball courts. Equipped with nearly 600 systems—twice that of a standard platform—it integrates drilling, remote operations, CO₂ injection, power generation, and oil-gas-water processing, making it Asia’s most advanced and largest offshore production platform.

Typhoon-Proof & Future-Ready: Unmanned Production Unleashed

"Frequent typhoons in summer and autumn pose major challenges to offshore operations. The Enping 15-1 cluster is CNOOC’s first new project to adopt unmanned production during typhoons, enabling remote shutdown, pipeline purging, and swift resumption of operations, ensuring safety during extreme weather.”

Deng Changhong

Deputy General Manager

CNOOC Shenzhen Branch

From Waste to Worth: CO₂ Storage Breakthrough

The Enping 15-1 cluster pioneers offshore CO₂ storage by reinjecting captured emissions into subsea formations instead of releasing them. CNOOC developed the offshore supercritical CO₂ compressor and molecular sieve dehydration skid using cutting-edge technologies, achieving breakthroughs in equipment manufacturing and establishing a complete CO₂ management system.

"This facility captures and permanently stores associated CO₂ underground, achieving near-zero emissions and setting a benchmark for green offshore development. At peak capacity, it will store 300,000 tons of CO₂ annually, totaling 1.5 million tons—equivalent to planting 14 million trees or taking 1 million cars off the road.“

Zhang Lin

Production Manager

CNOOC Enping Oilfield

Solution

Powering Intelligent Offshore Operations

As a primary supplier, HollySys has delivered a range of systems including Distributed Control Systems (DCS), Emergency Shutdown Systems (ESD), Fire and Gas Detection Systems (FGS), Safety Instrumented Systems (SIS), Asset Management Systems (AMS), cybersecurity solutions, remote control capabilities, as well as fire and gas detection systems for all four platforms. The DCS features over 6,000 I/Os, while the SIS system—comprising ESD, FGS, and SIS—exceeds 6,300 I/Os. This system employs a distributed network architecture that integrates the Central Control Room (CCR), Field Assemble Rack Room (FAR), and onshore terminals. It is equipped with 4 engineering workstations, 10 operator stations, and 48 equipment cabinets to ensure efficient operations alongside robust safety management protocols.