FOUNDATIONAL GEOLOGICAL SURVEY FOR OIL AND GAS RESOURCES IN SONGLIAO BASIN AND ITS PERIPHERY AREAS: Progress and Prospect

The foundational geological survey for oil and gas in Songliao Basin and its periphery area aims at exploration of new areas, new strata, new types and new fields to support the century-long production of Daqing Oilfield. Investigations focus on the shale oil of continental facies, small-middle basins in surroundings and Carboniferous-Permian and Meso-Neoproterozoic formations. Significant progress has been achieved as follows: Industrial oil flow is obtained from parameter wells for matrix type of continental facies oil, revealing great potential resources of continental shale oil in Songliao Basin; The LFD2 well in Fuxin Basin yields industrial oil flow, which breaks through the difficulties of exploration in small-middle basins and will supply alternative resources for the resource-exhausted city; Achievement is made from foundational geological survey on deep formation and unconventional oil-gas in Carboniferous-Permian and Meso-Neoproterozoic strata. A comprehensive survey on the whole basin with all subjects for multiple resources is suggested to meet the new requirement and circumstances.