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Gravity anomaly, basin structure and gas-oil potential of the Hulin Basin in Heilongjiang Province

ZHANG Feng-xu~1, MENG Ling-shun~1, LIN Ze-fu~2, ZHANG Feng-qin~1(1. College of GeoExploration Science and Technology, Jilin University, Changchun, 130026, China;2. Sub-Academy of Haerbin, Geo-Investigation Academy of Heilongjiang, Haerbin, 150080, China)  
The paper deals with how to process the gravimetric data of the Hulin Basin in wave-number field by using the technology of matched filtrating wave and the method of extending lines or points of border areas to separate the regional gravity field efficiently and to gain the experiences of defining the values of related parameters. According to the characteristic of Bouguer gravity and regional gravity anomaly, the authors worked out a plot of structure pattern in the crystalline base of the basin. In the plot, three uplifts and two depressions were indicated and eight faults which are towands NE, NEE and EW are carued up. At the same time, the depth of boundary surface of the crystalline base were calculated. The technology of three-dimension was also used to recover the entire base the depressions of the Hulin River and Xingkai Lake are thought to be gas-oil potential.
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