Vivien is frequently mentioned in Legal 500 Asia Pacific and Chambers Asia in the M&A, and energy and infrastructure areas:

She has excellent communication skills and knows her clients’ needs very well” (Chambers Asia 2018)

...[Vivien Yang’s] professional manner is highly recognised.” (Legal 500 2017)

...Vivien Yang easily understands client demands and exactly what they are asking for.” (Chambers Asia 2016)

Her temperament, knowledge of the area and ability to negotiate help to bring the right solution at the right time.” (Chambers Asia 2015)

She was also named “Leading Lawyer” by IFLR 1000 (2014-16) in Energy and Infrastructure, and shortlisted for “Best in Energy and Natural Resources” at Euromoney Asia Women in Business Law Awards (2015-16).


Vivien has more than 15 years of experience advising clients in oil and gas, LNG and power related transactions, and is a well-recognized expert in the region. Vivien has led work in matters arising out of 34 countries across the Greater China Area, Southeast Asia, the Middle East, Central Asia, Russia, Australia, Europe and North and South America. Her clients include international and Asian (mainly Chinese, Indians and Koreans) state-owned and private companies, Hong Kong listed companies and private equity funds. Vivien is particularly familiar with key LNG players in Asia, including KOGAS, CPC Taiwan, CNOOC and Indian NOCs.

  • Oil India Limited and ONGC Videsh on the US$2.475bn joint acquisition by Oil India Limited and ONGC Videsh of Videocon Rovuma 1 Limited, a company holding a ten percent participating interest in Mozambique's Area 1 Rovuma Offshore Block in Mozambique and interest in the associated LNG liquefaction project (Global M&A Deal of the year- Africa 2014, the American Lawyer)
  • Oil India Limited and ONGC Videsh on its negotiation with seller’s lenders led by Standard Chartered for terms of repayment and termination of an existing syndicated loan in an amount over US$700 million concerning a ten percent participating interest in Mozambique's Area 1 Rovuma Offshore Block in Mozambique
  • ONGC Videsh on the US$1.1bn acquisition from Hess Corporation of 2.72 per cent interest in the Azeri, Chirag and Guneshli (ACG) oil and gas fields in Azerbaijan
  • Bharat PetroResources Ltd. on their negotiation with the Mozambique government in connection with the development of the first LNG project in Mozambique and with the co-concessionaries on amendment of various project documents including the joint operating agreement
  • Indian Oil and ONGC Videsh on contemplated acquisition of interests in several oil leases in Alberta, Canada from an oil major.
  • Twinza on negotiation of a joint operating agreement and on issues arising out of joint operations in two E&P blocks in Papua New Guinea
  • KOGAS on various upstream E&P, LNG HOA and sale and purchase agreements and pipeline related transactions for assets in Iraq, Indonesia, etc.
  • BG in its contemplated sale of LNG to Asian national oil companies from a LNG terminal built in Queensland, Australia, with the supply of natural gas from a CBM production
  • Poly-GCL Power on its first LNG sale and purchase agreements with Chinese buyers for LNG to be produced from its Djibouti LNG project
  • APEC Energy on acquisition of a 50% interest in Barryroe, offshore Ireland under a farmout arrangement, work including negotiation of relevant loan arrangements with Chinese banks, farmout agreements, warrant instrument, JOA novation, integrated drilling services agreement
  • China Resources Power, a Hong Kong listed company on a share buy-back transaction for re-purchase of shares in a power plant in South China from its joint venture partner, JM Energy Co.
  • an Asian national oil company on preparation of memoranda and development of strategies for discussion/negotiation with the PRC government concerning potential change of law and policies involving third-party access to LNG receiving terminals and relevant terminal arrangements
  • CNOOC on preparation of model form gas sales agreement for sale of regasified LNG to end customers of regasification terminals in China and model form regasification terminal use agreement for various CNOOC operated terminals in China, work including understanding, and incorporating into the documentation, relevant PRC regulatory requirements
  • CNOOC on various transactions in connection with upstream oil and gas assets acquisitions and mid to long term LNG sale and agreements (and HOAs) for LNG sourced from the US, Australia, Canada, the Middle East, Russia, Africa, and Southeast Asia
  • CNPC/CNODC on acquisitions of upstream oil and gas assets and negotiation of crude oil sale and purchase agreements around the world including Southeast Asia, the US, Latin America and Africa; work usually includes conducting due diligence and risk analysis, advising on transaction structures, and negotiation of PSCs/concessions, and other development and production contracts (including rig sharing agreements and drilling agreements), joint operating agreements, guarantees, restructuring of loans and farmout agreement/sale and purchase agreement
  • a subsidiary of a PRC SOE on communication with the PRC and Indonesian governments concerning price review for a long-term LNG SPA, impact of which is valued at more than US$2 billion
  • Guangdong Zhenrong concerning development and upgrade of an oil terminal, an oil refinery, a power plant, and an LNG receiving terminal in Curaçao, including negotiation of project documents and loan arrangements. 
  • Guangdong Jovo on negotiation of several LNG sale and purchase agreements for mid to long term purchase of LNG
  • Blue Sky Power, a Hong Kong listed company, on review and negotiation of various Master LNG sale and purchase agreements for LNG spot cargoes from sellers including Chinese national oil companies and LNG traders
  • United Energy Group, a Hong Kong listed oil and gas company on various transactions involving outbound investments in upstream oil and gas assets, bond issuances, fund formation, and other funding of business and acquisition, including bridge loans and syndicated loans 
  • Shell on the preparation of project documents including project development and financing documents for its US$8bn petrochemical joint venture with CNOOC in Daya Bay, Guangdong, China; this project involves a 10Mtpa refinery expansion and 1Mtpa ethylene project, to be fuelled by regasified LNG to be provided by the oil major
  • Macquarie Capital on its joint venture with a local partner for the development of solar projects in Taiwan
  • a Chinese state-owned power company on bidding for an interest in Triton Knoll, a 857MW offshore wind power project in the UK owned by Innogy, J-Power and Kansai Electric Power
  • China Resources Power on its contemplated investments in thermal power projects in Africa and Bangladesh, and offshore wind projects in the UK
  • China Southern Grid and Power International on the development of Vinh Tan 1 power project in Vietnam; work including negotiation of BOT contract, PPA and coal supply agreement, financing arrangements, and negotiation with Vietnamese government and a national coal company
  • EDF on a series of energy efficiency projects in China, including district heating, cooling and lighting, work including negotiation of concession agreement, project development agreement, joint venture agreement and share subscription agreement
  • AEI on its disposition of gas businesses in China, including town gas and associated pipeline businesses and projects; work including review of concession agreements and joint venture arrangements, and negotiation of sale and purchase agreement
  • a South Asian national oil company in an ICC arbitration concerning final adjustment of purchase price for an acquisition involving assets in Africa
  • a PRC national oil company in its dispute with an international oil company concerning liabilities for oil spill in Bohai Bay, China
  • a U.S.-based electricity company in ICC arbitration proceedings in connection with the company’s investments in two power plants in Parana State in Brazil
  • a Houston-based electricity company in a multimillion-dollar ICSID arbitration proceeding against the Government of Peru in connection with the company’s energy assets investment in Peru
Professional memberships
  • Vivien is a member of the Association of International Petroleum Negotiators
  • English
  • Mandarin Chinese
  • French