The Liuhua 11-1/4-1 Oilfield Secondary Growth Undertaking within the japanese South China Sea started producing heavy crude, CNOOC Ltd. stated Thursday.
The state-backed firm expects the venture, which consists of oilfields Liuhua 4-1 and Liuhua 11-1, to achieve about 17,900 barrels of oil equal a day (boed) in peak manufacturing in 2026. CNOOC Ltd., majority-owned by China Nationwide Offshore Oil Corp. (CNOOC), goals to fee 32 wells.
Liuhua 11-1/4-1 is the primary oil venture in Asia “to be developed with the ‘Deepwater Jacket Platform + Cylindrical FPSO’ mode”, CNOOC Ltd. chief govt and president Zhou Xinhuai stated in an organization information launch. The manufacturing amenities embrace a brand new deepwater jacket platform and a cylindrical floating manufacturing, storage and offloading (FPSO) unit. Liuhua 11-1/4-1 has a median water depth of round 305 meters (1,000.7 ft), in line with the oil and fuel exploration and manufacturing firm.
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“The Firm has overcome varied technological challenges to finish the venture”, Zhou stated.
“Whereas revitalizing the deepwater oilfields with authentic oil in place over 100 million tons, the brand new mode has considerably diminished the development and manufacturing prices.
“It gives a Chinese language resolution for the environment friendly improvement of comparable deepwater oil and fuel fields”.
CNOOC Ltd., listed on the Shanghai Inventory Alternate and the Hong Kong Inventory Alternate, operates the venture with a one hundred pc stake.
Earlier this month it stated it had put on-line the Wushi 17-2 Oilfields Growth Undertaking, situated within the Beibu Gulf in common water depths of round 28 meters (91.9 ft).
CNOOC Ltd. expects the venture, which produces mild crude, to attain roughly 9,900 boed in peak output in 2026. It plans to fee 43 improvement wells, 28 of which might be manufacturing wells, in line with a press launch September 4.
CNOOC Ltd. operates the venture with an 80 p.c curiosity.
Within the first half of 2024 CNOOC Ltd. produced 362.6 million boe, a 9.3 p.c year-on-year enhance and the corporate’s highest manufacturing within the January–June interval.
Earlier than the 2 initiatives put onstream this month, CNOOC Ltd. began up three initiatives in 2024: the Suizhong 36-1/Luda 5-2 Oilfield Secondary Adjustment and Growth Undertaking, the Bozhong 19-6 Gasoline Discipline 13-2 Block 5 Properly Website Growth Undertaking and the Wushi 23-5 Oilfields Growth Undertaking.
“Technological breakthroughs made the Firm extra aggressive available in the market”, CNOOC Ltd. stated in a monetary report August 28. “Progress in exploration concept and know-how guided the invention of a number of oil and fuel fields resembling Lingshui 36-1, Bozhong 8-3 South and Longkou 7-1.
“By way of improvement and building, Liuhua 11-1/4-1 Oilfield Secondary Growth Undertaking adopted the revolutionary mode of ‘deep-water jacket platform + cylindrical FPSO’, making a brand-new resolution for the environment friendly improvement of deepwater oil and fuel fields in offshore China.
“For drilling and completion, the Firm drilled an ultra-deep further prolonged attain effectively in Enping 21-4 oilfield, the primary one in all its kind, setting new data for the deepest offshore drilling depth and horizontal size in offshore China. The effectively would considerably enhance manufacturing effectivity of the venture”.
On September 10 CNOOC Ltd. declared “the primary main exploration breakthrough in ultra-deepwater carbonate rocks offshore China” after drilling almost 3,000 meters (9,842.5 ft) deep into the Pearl River Mouth Basin.
Testing of the Liwan 4-1 effectively yielded a manufacturing price of 430,000 cubic meters (15.2 million cubic ft) per day of absolute open-flow pure fuel, it stated.
The effectively sits in a water depth of almost 1,640 meters (5,380.6 ft) within the Baiyun Sag, the most important hydrocarbon sag within the Pearl River Mouth Basin. The whole depth was almost 4,400 meters (14,435.7 ft). A fuel pay zone of round 650 meters (2,132.5 ft) confirmed within the horizontal part, CNOOC Ltd. stated.
“Beforehand, exploration in China’s ultra-deepwater areas primarily targeted on clastic rocks”, the corporate’s chief geologist, Xu Changgui, stated then. “The success of this effectively has, for the primary time, revealed the large potential of carbonate rocks in China’s ultra-deep waters, marking important breakthroughs in each exploration understanding and operational methods”.
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