Study On Sedimentary Characteristic And Pool-forming Law In S Oil Layer In Bayanchagan Oil Field In The West Of Daqing Placanticlin

Byanchagan is on the center of Gulong sag and the western slope, developing the front-delta deposition and lake sediments, there appears the oil - water - oil belt distribution on the slop belt which location shows west high east low, and the exploitation block shows the moniliform and leap distribution, now there were not many prospect well being used in the research area of Talaha syncline, we found that that the S0 and S1 formation were not being exploited, this complex distribute condition and controlling factor of reservoir genesis in the research area, are restricting the further exploration and the development. Therefore this article take the sedimentary-tectonic setting research as a foundation, using the high-resolution sequence stratigraphy as the theory instruction and seismic,logging data to establish the second and third base-level cycle sequence stratigraphic framework,under the isochronous comparison, divide Saertu oil formation into 5 four-stage sequences, 33 six-stage sequences, and establish distributing graph of each six-stage sequences, described each deposition characteristic and the vicissitude rule fine. After analysis the hydrocarbon generation and expulsion condition, paleo tectonic developing history , reservoir types and source-reservoir-cap assemblage,we think that the reverse drag anticline sedimentary micro facies model are the reservoir-forming main control factors in Saertu oil formation, combined with the suggestions to the undeveloped area and developed area of distribution characters of oil and water ; meanwhile according to the successful exploration experience of S0,S1 formation and special tectonic development features,we proposed the possibility of oil bearing in syncline, and suggestions of perforations adding to give a basis to exploration and development of S0,S1.