Connotation,classification,formation and distribution of giant oil and gas province

The concept "giant oil and gas province" is coined to describe the petroleum province with big reserve scale that is composed of petroleum provinces and accumulation belts with relations in their generation,type and distribution in the uniform tectonic dynamic settings.It may be smaller or bigger than a basin.Uniform tectonic dynamic settings and similar pool-forming conditions are the basis of forming the provinces,and the basic criterion to divide them is prototype basin or depression type.The provinces have similar tectonic settings,high quality source rocks,favored sedimentary reservoirs and effective regional seals.China steps across the Pacific-surrounding active continental margin and the continental plate collision related giant petroleum domains,and has four giant oil provinces,seven giant gas provinces and one giant oil and gas provinces.The exploration strategy "integrated research,integrated deployment and integrated evaluation" is proposed.The concept is to enhance the transition of research and exploration thinking from finding giant fields to finding giant provinces.