Qijia-Gulong Depression Ancient83Pieces Of Putaohua Reservoir Sedimentary Microfacies Research

Based on the former research results, with core, logging and seismic data, the applicationof sedimentation, the principle of sequence stratigraphy of northern songliao basin gulongdepression reciting ancient83pieces of the sequence stratigraphic units at all levels of therecognition and division, established the high precision sequence stratigraphic framework,will purpose putaohua reservoir layer (layer order XVI low water level is equivalent to thesystems tract and TST) bottom-up is divided into SQ1, SQ2and SQ3three level4ofsequence, and the division of out of4fourth-order low, water into high and three systemdomain. In the sequence stratigraphy of guidance, reference area reservoir research,application, try oil, coring normal log and seismic stratigraphic classification and material,establish the research area depositional model and sedimentary microfacies division.In the sequence stratigraphic framework of sequences in the sand body was identificationof songliao basin from the regional geological background, the characteristics of formations,through the help of putaohua reservoir physical property characteristics, logging curvecharacteristics, earthquake attribute analysis, the core, the existing nine mouth coring Wells,56mouth not take heart well micro facies division. According to the regional data andprevious research results and coring well mark the phase analysis, and carried out theputaohua reservoir sedimentary microfacies research, make sure the ancient83putaohuareservoir area mainly development shallow lake delta facies in the delta front and phase, thephase type: underwater distributary channel, underwater split between bay (underwaterdistributary channel room), underwater natural levees, underwater crevasse-splays, estuaryseats dam, ManLiu underwater thin sand (word table between state of sand), front seats at thestate of sand, clay, eight kinds of micro phase; Mainly underwater distributary channel andstate of sand table (including the front seats at the state of sand and word table between stateof sand) give priority to. And based on the system tracts in the plane facies researchcharacteristics, and comprehensive analysis sedimentary microfacies in the vertical peace onthe trend.