Study On Distribution Characteristics Of Igneous Rocks Of Funing Formation In The Northern Slope Of Gaoyou Sag,Subei Basin

In this paper,we study the formation of Funing section of the North Slope of Gaoyou sag.Due to the improvement of the exploration degree of Gaoyou sag in rencent years,the research on the abundance axiom of igneous rock of this layer has been unble to meet the production needs.therefore,it is necessary to carry out the study on the abundance axiom of infracrustal rock.Main content of this study is to branch the detailed Vertical distribution interval of Funing 'diabase,and to analyze the diabase 'Plane distribution law of the North Slope.the results of the study is not only beneficial to the optimization and evaluation of exploration target,more the next step exploration and clear train of thought.author concludes that the Gaoyou sag intrusive rock has" three low and two high" logging response characteristics,low frequency,strongly vibration intensity,stratal continuity is pretty good and other seismic reflections.In the depression of the Funing Formation,four lithologic fragments of E1f4-E1f1 are developed from the bottom to the top,and the typical wells with rich diabase development in the work area are preprocessed.Under the premise of completing the depth correction and environmental impact correction,ResForm is used to construct the borehole log.Through the single well borehole log identification and the continuous well profile analysis,it is concluded that the vertical diabase of the Funing Formation in the north slope belt mainly invades the E1f4-E1f2 stratum,and is dominated by concordant intrusion,A few Through layer invasion and along the section invasion.According to the seismic reflection characteristics of diabase,the diabase is identified and interpreted,and the planiform distribution range of diabase of Gaoyou is delineated,in which The northern slope diabase is distributed from the west to the east in the northeast direction in the Mtouazhuang area,the Shanian-Huazhuang area,the Wazhuang area,and the Xinghua area connected to the low-lying bulge,according to the logging interpretation results with area of the diabase located on northern slope and The drilling data of the internal exploration well draws a contour map of the diabase thickness and a topographic map of the diabase,the Shanian-Huazhuang area is the area with the most concentrated and wide area of diabase.The diabase in this area is superimposed on the plane and distributed in a dish shape.The Matouzhuang area's diabase is mainly distributed in the anticl of Matouzhuang.The diabase,s height is thinned from the center to the periphery.The Wazhuang's is mainly distributed near the wells W1,W2 and W4,and the diabase is thinned in the east and west directions.There are also many wells in the Xinghua area that are exposed to diabase and have a wide distribution area.