Dec 21 (Reuters) - Chevron (N:CVX) CVX.N :
* Chevron and China Huadian sign heads of agreement for long term lng supply
* Says chevron's subsidiaries in Australia are also developing the wheatstone
project as an lng and domestic gas operation near onslow
* Says China huadian green energy expected to receive up to 1 million metric
tons per annum (mtpa) of lng over 10 years starting in 2020
* Source text for Eikon ID:nBw3JZSbSa
* Further company coverage CVX.N