Hydrocarbon Accumulation Regularity And Reservoir Model In The Anda Synclinc Of Daqing Oilfield

Anda area is located in the southeast of Daqing City, located in the central depression in the structure of the northern depression of Songliao basin area of three Zhao sag in the north, west of Daqing, east of Changyuan Mingshui terrace, north of Heiyupao sag. The transition zone as the north shore area and the three cause depression, the main purpose for Fuyu reservoir. Although in Anda area of lithologic reservoir exploration in recent years has made considerable progress, however, because across a number of oil and gas migration and accumulation unit in the region, resulting in the different regions, different tectonic position of the oil and gas distribution, main controlling factors is not clear, the surrounding area resource prospect is not deep enough understanding, serious constraints the surrounding areas the pace of exploration.Through this project research and technology research, established in Anda area, pressure control of deep faults control the edge fault pressure controlled reservoir model. Anda area fracture dense, complex, lateral sealing good, reservoir sand body continuity is poor, do not have the long distance migration and accumulation condition. At the same time, study on the tectonic development history shows, anda area by tectonic sedimentary period of adjustment, the sedimentary center is located in the west of the center, deposition, and the show of oil and gas, oil and gas distribution is controlled by the ancient settlement center. On the basis of the above analysis, a clear Anda Oil and gas reservoir. Therefore the Anda sag its petroleum geological conditions and Study on accumulation rule, one can reveal the forming rules and exploration potential of oil and gas in Anda sag, but also to further clarify the Small Sag of tight oil exploration area, the overall oil reserves dense surrounding areas late awareness and provide technical support enhance the quality of the reserves.