Xin Lang Cai Jing·2025-12-14 04:46Core Insights - The successful deployment of the last production well on the "Hai Ji No. 2," Asia's first deepwater jacket platform, marks the full production launch of the Liuhua oilfield secondary development project, representing a significant advancement in China's deepwater complex reservoir development [1][2]. Group 1: Project Overview - The Liuhua oilfield secondary development project is located in the Pearl River Mouth Basin and consists of the Liuhua 11-1 and 4-1 oilfields, with an average water depth of approximately 305 meters [1][2]. - The project is designed to produce from 32 production wells, and since the first batch of wells was put into operation in September of the previous year, daily crude oil production has reached 3,900 tons, setting a new production capacity record [1][2]. Group 2: Technical Achievements - The Liuhua oilfield is China's first deepwater oilfield and has the largest proven geological reserves of reef limestone oil in the country, having produced over 20 million tons of crude oil since its inception in 1996, with an estimated 140 million tons of crude oil reserves still hidden beneath the seabed [1][2]. - The development of deepwater reef limestone reservoirs is recognized globally as a highly challenging task. Key to the secondary development of the Liuhua oilfield is the control of water and stabilization of oil, which has led to a significant reduction in the comprehensive water cut of the development wells compared to design expectations, thereby greatly enhancing the recoverable reserves and recovery rates, extending the field's lifespan by 30 years [3]. Group 3: Infrastructure - Major production facilities for the Liuhua oilfield secondary development project include the "Hai Ji No. 2" platform and Asia's first cylindrical FPSO (Floating Production Storage and Offloading) unit, "Hai Kui No. 1." Crude oil extracted is initially processed on the "Hai Ji No. 2" platform before being transported 2.5 kilometers to the "Hai Kui No. 1" for further processing and storage [2][3].