The discovery of giant oil/gas fields

Tahe and Puguang

shows that China's marine sequences have great hydrocarbon potentials and can be a very important option of strategic energy replacement in China.However

due to an early formation and long evolution history

the marine sequences in China had gone through a multistage evolution

during which several sets of source rocks had formed with several episodes of reservoiring and adjustment.As a result

the distribution of oil and gas in the strata is so complicated that the exploration is full of risk and uncertainty.Therefore

new exploration breakthroughs and discovery of more and larger oil/gas fields in marine sequences require:insisting on exploration and continuous investment;adhering to theoretical innovation and technologic advancement;developing the hydrocarbon reservoiring theory and exploration technology of China's marine sequences to solve the key issues concerning exploration of marine sequences

centering on the scientific topic of 'hydrocarbon accumulation and dissipation mechanisms and enrichment pattern in marine carbonates in a multistage tectonic setting;highlighting the study of structural evolution;focusing on the research of source rocks

reservoirs

and sealing effectiveness;and emphasizing on three combinations

i.e.the combination of theoretical innovation with exploration practices

regional evaluation with target assessment

and geological study with engineering techniques.Only by doing all that can we found more large oil/gas fields in the marine sequences.