China's CNOOC climbs after Weizhou 5-3 Oilfield commences production

About this update from Sino Geophysical Co., Ltd. Class A

** Hong Kong shares of CNOOC SSE:600938 climb 2% to HK$18.64, highest since April 3** Stock set for biggest one-day pct rise since May 12** Shanghai-listed stock SSE:600938 adds 0.9% to 26.43 yuan, highest since April 2 ** Sino Geophysical SZSE:300191 says the co and CNOOC jointly-cooperated Weizhou 5-3 Oilfield Development Project has commenced production on June 6** CNOOC says project expected to achieve a plateau production of about 10,000 barrels of oil equivalent per day in 2026 ** Says CNOOC holds 51% interest in the project and Sino Geophysical's unit Smart Oil Investment owns 49%** Sino Geophysical stock jumps 16.8% to 20.76 yuan, highest since March 24 ** In China, blue-chip CSI 300 Index SZSE:399300 and Shanghai Composite Index SSE:000001 both climb 0.3%** In Hong Kong, Hang Seng Mainland Oil & Gas Index (.HSMOGI) slips 0.1%, Hang Seng Index HSI:HSI rises 1.3%** YTD, CNOOC Hong Kong stock down 2.6%, Shanghai shares down 10.6%

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