Geology and Exploration   By applying basin analysis, hydrocarbon system dynamics and sequence stratigraphy theory, we have developed sophisticated oil exploration technologies represented by integrated geological analysis and detailed exploration methods. These technologies enable us to make significant progress in fields posing challenges to the global oil and gas exploration industry, such as lithostratigraphic reservoirs, mature oil and gas producing areas, foreland basins and superposed basins.   Prospecting of Lithostratigraphic Reservoirs The theory of formation of lithostratigraphic oil and gas reservoirs in zones goes beyond the traditional prospecting concept in secondary structural belts. Large oil and gas pools have been discovered in the sand bodies of shallow water deltas in continental basins. Thus, the geological theory that large-area lithostratigraphic oil and gas pools with mid-to-low abundance could be formed was created. Enrichment patterns of lithostratigraphic reservoirs in the continental downwarping basins, faulted basins, foreland basins and marine cratonic basins have been revealed. The geological theory and prospecting technology created in this study have successfully directed massive prospecting in lithostratigraphic oil and gas reservoirs, as well as the industrial application of the technology. Several oil and gas fields, each with reserves of hundreds of million of tons, were discovered in the deep zone of the Songliao Basin, the Xifeng area of the Ordos Basin, the Chuanzhong area of the Sichuan Basin and the Tazhong area of the Tarim Basin. In the past two years, 1.07 billion tons of oil and 563.32 billion cubic meters of natural gas were proved in lithostratigraphic oil and gas pools with mid-to-low abundance.