CNOOC Ltd introduced Wednesday a “main” discovery within the Qinhuangdao 29-6 oilfield within the central Bohai Sea with estimated in-place sources of over 100 million oil equal tons.
“The primary oil-bearing play is Neogene Minghuazhen Formation, characterised by shallow burial depth”, CNOOC Ltd, majority-owned by China Nationwide Offshore Oil Corp, stated in an internet assertion. “The oil property is medium-heavy crude.
“The invention nicely was drilled and accomplished at a depth of 1,688 meters [5,538.06 feet], which encountered a complete of 66.7 meters oil pay zones and was examined to provide roughly 2,560 barrels of crude oil per day”.
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CNOOC Ltd chief geologist Xu Changgui, stated, “CNOOC Ltd has made a big discovery via enhanced analysis on hydrocarbon migration and accumulation fashions in shallow Neogene slope zones, coupled with technological innovation. This achievement challenges the traditional understanding that slope areas merely function pathways for hydrocarbons fairly than websites for substantial accumulation. It additional highlights the appreciable exploration potential of uplifted peripheral slopes in settings influenced by intense extensional-strike-slip faulting”.
“Qinhuangdao 29-6 oilfield is the second one-hundred-million-ton-class lithological oilfield found within the mature exploration space of the Shijiutuo Uplift, additional highlighting the worth of high-quality exploration and consolidating the useful resource base for growing reserves and manufacturing for the corporate”, CNOOC Ltd stated.
That is CNOOC Ltd’s second introduced discovery in 2025 to exceed 100 million oil equal tons, after the Huizhou 19-6 oilfield within the South China Sea.
“The primary oil-bearing performs are Paleogene Enping Formation and Wenchang Formation, and the oil property is mild crude”, CNOOC Ltd stated in a press launch March 31 asserting the Huizhou 19-6 discovery.
“The invention nicely HZ19-6-3 was drilled and accomplished at a depth of 5,415 meters, which encountered a complete of 127 meters oil and gasoline pay zones. The nicely was examined to provide 413 barrels of crude oil and a pair of.41 million cubic toes of pure gasoline per day”.
“In recent times, CNOOC Ltd has strengthened the analysis on exploration principle and know-how of the deep and ultra-deep performs within the South China Sea, and breakthroughs have been achieved. This discovery has confirmed the most important built-in clastic oilfield within the northern South China Sea when it comes to unique oil in place, breaking the standard theoretical understanding, and demonstrating the big exploration potential of deep and ultra-deep performs in high-temperature and extremely energetic basins offshore China”, Xu stated then.
To contact the writer, electronic mail jov.onsat@rigzone.com
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