Study On Shale Oil And Gas Accumulation Conditionsin Southern Songliao Basin

Qingshankou formation and nenjiang formation in southern songliao basin are development of stability of shale, with formation of shale oil and gas geological condition. It is exploration and alternative energy in Jilin oilfield. For Jilin Oilfield of the main exploration targets of low permeability reservoirs, Shale oil and gas in the future and will occupy a very important position. Therefore, the study of shale oil and gas reservoirs in South songliao basin conditions is particularly important. Based on the old producer reviewing,to research middle-shallow layer in South songliao basin characteristics of mud shale oil and gas. On the basis of summary of shale oil and gas information sampling and laboratory analysis,Establish songnan mud shale rock, log, logging, and analysis of laboratory data on the longitudinal characteristics of correspondence and plane, And the partition for the middle-shallow layer in south songliao basin area. From the origin, the main controlling factors, establishing mode of shale reservoirs in southern songliao basin, based on the shale oil and gas resource evaluation,Combined with reservoir-forming characteristics and exploration potential,Middle-shallow layer is divided up with 5 strong exploration area.1. Nenyiduan, Nenerduan, Qingyiduan and Qingerduan in southern songliao basin as well as deep of yingcheng formation for the main layer of shale oil and gas development.2. Thicker the dark mudstones in the south of songliao basin, better the overall oil and gas shale;Grey-black shale than grey and dark grey shale gas log exceptions higher. Organic maturity is another key factor of controlling shale oil.3.Qingyiduan shale powerful exploration zone is mainly distributed in the Fuxin uplift and its western and northern huazijingjiedi; Qinger + Qingsan shale exploration areas are mainly located in Honggang terrace, held in Southern of Fuxin and central dehui depression, the northern pear trees sag;Nenyiduan section of shale oil and gas strong exploration zones are mainly distributed in Honggang terraces, and the southern region of Fuxin; Strong and deep shale exploration zone is mainly controlled by faulted and distribution of shale.