kong based subsidiary of cnooc . for its parent company see china national offshore oil corporation . cnooc limited native name traded as sehk 0883 nyse ceo tsx cnu industry oil and gas energy founded august 1999 headquarters hong kong china key people li fanrong ceo wang yilin chairman 1 yang hua president total assets rmb384 .26 billion 2012 2 number of employees 5 377 2012 2 parent cnooc subsidiaries nexen china oilfield services website www.cnoocltd.com cnooc limited is china s largest producer of offshore crude oil and natural gas . it is a major subsidiary of china national offshore oil corporation cnooc and has been listed in hong kong sehk 0883 and in new york nyse ceo since february 2001 . it was admitted as a constituent stock of the hang seng index in july 2001 . 2 in september 2013 it was listed on the toronto stock exchange following its acquisition of canadian oil and gas company nexen inc. contents 1 operations 1.1 competition in china 2 see also 3 references 4 external links operations edit its core domestic operation areas are in bohai the south china sea and the east china sea . internationally it has oil and gas assets in asia africa north america south america and oceania . 3 as of december 31 2011 the cnooc limited owned net proven reserves of approximately 3.19 billion barrel of oil equivalent boe and its average daily net production was 909 000 boe . 2 competition in china edit cnooc ltd s parent china national offshore oil corporation cnooc is the third largest of the big three chinese oil companies and traditionally specialised in offshore upstream exploration and production whereas cnpc group specialised in onshore upstream exploration and production and sinopec group specialised in refining and marketing . these distinctions are now increasingly blurred as the three companies compete in all areas . all of the big three have vested the majority of revenue producing assets in listed hong kong subsidiaries . cnpc into petrochina sinopec group into sinopec limited and cnooc group into cnooc limited . see also edit companies portal china national offshore oil corporation cnooc petroleum industry in china references edit nexen announces completion of acquisition by cnooc limited . yahoo finance . 25 february 2013 . a b c d about us . cnooc limited . cnooc ltd . bloomberg . retrieved 9 march 2013 . external links edit homepage wikinvest cnooc ltd. v t e oil and gas in china energy in china oil e & p companies major cnpc petrochina kunlun energy china petrochemical corporation sinopec cnooc group cnooc limited other citic resources geo jade petroleum shaanxi yanchang petroleum sinochem gas companies major china gas enn group towngas china other china natural gas shenergy china united coalbed methane corporation refining chemchina fushun petrochemical company cnpc shanghai petrochemical sinopec oilfield services china huanqiu contracting & engineering corporation cnpc china oilfield services cnooc china petroleum engineering and construction corporation cnpc china petroleum pipeline bureau china petroleum pipeline engineering corporation cnpc great wall drilling company cnpc jereh group shengli oilfield company sinopec zhongyuan petroleum engineering sinopec economy of china companies of china v t e hang seng index companies of hong kong finance hsbc holdings hang seng bank bank of east asia hkex china construction bank aia industrial and commercial bank of china ping an insurance boc hong kong holdings china life insurance company bank of communications bank of china utilities clp holdings hong kong and china gas power assets holdings china resources power property henderson land development sun hung kai properties new world development sino land hang lung properties china overseas the link reit china resources land ck property commercial and industrial ckh holdings wharf holdings hutchison whampoa swire pacific mtr corporation kunlun energy china merchants want want china citic limited china resources cathay pacific tingyi esprit holdings sinopec li & fung tencent holdings china unicom cnooc limited petrochina china mobile hengan china shenhua belle galaxy entertainment sands china lenovo mengniu v t e hang seng china affiliated corporations index companies of hong kong poly hong kong investments yuexiu property kunlun energy china merchants holdings international guangdong investment china resources enterprise sinofert shanghai industrial beijing enterprises china agri industries china overseas china unicom shougang concord international china jinmao china resources power tianjin development cnooc china mobile china taiping lenovo group china resources land cosco pacific china resources cement sino ocean land sinotruk v t e hang seng china 50 index constitutent stocks a shares h shares finance agricultural bank of china bank of china bank of communications china citic bank china construction bank china everbright bank china life insurance china merchants bank china minsheng bank china pacific insurance citic securities gf securities guosen securities guotai junan securities haitong securities industrial bank industrial and commercial bank of china orient securities people s insurance company of china picc property and casualty ping an bank ping an insurance shanghai pudong development bank shenwan hongyuan other china communications construction company china national nuclear power china railway construction ltd. china railway group limited china telecom china shenhua china shipbuilding industry corp. china yangtze power crrc china state construction ltd. daqin railway gree electric huaneng power intl. kweichow moutai petrochina saic motor shanghai port sinopec vanke wanda red chip china mobile china overseas land and investment china unicom citic limited cnooc limited others tencent v t e s & p asia 50 companies aia group boc hong kong holdings cathay financial holding china construction bank china life insurance china mobile china petroleum & chemical china steel chunghwa telecom ck hutchison holdings clp holdings cnooc limited ctbc financial holding dbs group delta electronics formosa chem & fibre formosa plastics fubon financial holding galaxy entertainment group hang seng bank hon hai precision industry hong kong and china gas hong kong exchanges and clearing hyundai heavy industries hyundai mobis hyundai motor industrial and commercial bank of china jardine matheson kb financial group keppel kia motors kt & g lg chem li & fung lippo group mediatek nan ya plastics oversea chinese banking corporation petrochina ping an insurance posco power assets holdings samsung electronics sands china shinhan financial group singapore telecommunications sun hung kai properties taiwan semiconductor manufacturing united overseas bank want want china holdings this chinese corporation or company article is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title cnooc limited & oldid 734192425 categories 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