The Pinghu Oil-Gas Field is situated on the continental shelf of the East China Sea, about 420 km away from Shanghai. It is the first combined oil gas field with the natural gas being its main product, which was found and put into operation in the East China Sea. The construction work began in November 1996 and finished in the end of 1998. After being put into operation, the field has been providing quality natural gas of 1.2 million cubic meters for users in the Pudong New Area of Shanghai each day.