The Study Of Putaohua Oil Layer’s Oil-Deposit Analysis In The East Of Pubei Oilfield And Favorable Block Selection

Pubei oilfield in Daqing Changyuan large rivers- the southern delta depositional system,primarily a white powder gray-green siltstone and sandstone composition of reservoir development, Lower Cretaceous Yaojia some oil in Portugal I group. Pubei Oilfield work area in the eastern slope of the saddle water transition zone, due to the impact of faults and lithology changes rapidly dividing, resulting in the distribution of reservoir is more complex and inefficient wells is greater.The reference in the results of previous studies based on the use of core, well logging and other related information, choose the favorable block. Theoretical knowledge of high-resolution sequence stratigraphy theory, combined with the geological situation of the study area, the establishment of appropriate isochronous stratigraphic framework. To study the work area and sand distribution using seismic inversion of law, combined with core and log data, and the evolution of the work area to Putaohua Reservoir cored interval core single well sedimentary facies analysis based on micro obtained grapes flower oil phase six kinds of logging modes are: body underwater distributary channel, underwater distributary channel,underwater distributary channel edge between the body sheet sand, thin sand sheet,subaqueous mud. Early work area analysis and testing data capacity of the reservoir a detailed dissection and found fault segmentation significantly affected the role of reservoir distribution characteristics in different blocks and their respective oil-water interface is not the same, relatively low in the construction site saddle on transitional reservoir, reservoir distribution law is not to be found, it is because that is a break with sand configuration control relationships and lithological body caused; the region’s main anticline reservoir, fault block reservoir, fault lithologic reservoir three kinds of reservoir type. After dissection of the reservoir, as well as analysis of relevant information, the elected favorable block.