Reservoir forming conditions and risk exploration techniques of bedrock in the central paleouplift of the northern Songliao Basin

Bedrock in the central paleouplift of the northern Songliao Basin presents favorable conditions for forming natural gas reservoirs, high-yield industrial gas was produced from the weathered crust of bedrock by risk exploration well Lp1, which means a great breakthrough in the exploration of bedrock gas reservoirs. In order to evaluate the exploration potential of bedrock gas reservoirs in the northern Songliao Basin, this paper systematically summarizes the exploration history, accumulation conditions and main controlling factors of bedrock gas reservoirs, and a set of technical methods for bedrock gas risk exploration has been established. Research results show that the major exploration breakthrough of the bedrock weathering crust proves that the bedrock in the basin has great potential for oil and gas exploration, and has strengthened the determination and confidence in the transformation of exploration ideas and the expansion of new exploration fields.