| Xiaoji Oilfield is located on the Xiaoji structural belt at the southern end of the Kongdian structural belt in the Huanghua depression,Xiaoxin 14-19 well is located in the west Guan 162 fault block of Xiaoji Oilfield,Guan162 fault block is located between guan935 fault and guan938 fault in the west of xiaoji oilfield.By means of observation of core,rock sample characteristics and logging data,etc,By studying the sedimentary facies characteristics of well xiaoxin 14-19,it is concluded that the closed coring section of well xiaoxin 14-19 is an alluvial fan sedimentary system,and there are mainly fan-end subfacies and fan-subfacies.The fan-end subfacies mainly developed runoff channel microfacies and diffuse fine-grained sedimentary microfacies,The fan subfacies mainly developed braided sand island microfacies and diffuse sedimentary microfacies.The rocks of Xiaoxin 14-19 well are mainly composed of feldspar quartz sandstone and lithic feldspar sandstone.The interstitial is mainly composed of calcite,containing a small amount of anhydrite,iron dolomite and barite.Under the guidance of the basis of reservoir configuration classification of fluvial facies,and in combination with the 13-level classification standard of reservoir configuration of wu shenghe.Identification of the three configuration interfaces of 7th,8th and 9th grades in Xiaoxin 14-19 well and dividing the 7th,8th and 9th configuration units And analyze the characteristics and spatial combination of the configuration elements.Through in-depth study of the configuration elements of each level of configuration units,the characteristics of the elements of each level are determined.By studying its lithology,physical property and oil-bearing property,it can provide favorable data support for further development of oil fields in the future. |
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