Pool-forming Features and Exploration Methods for Oil and Gas in Slope Zone

This paper presents briefly the structure features of half-graben depression in Jiyang and divides the slope belt into three types, i.e, wide-gentle, narrow-abrupt and double-structure slope zones. By analyzing the types of hydrocarbon reservoir, the factors controlling hydrocarbon distribution and rules of it, we suggest that the wide-gentle slope belt develops the upper tertiary structural-lithologic reservoir, lower tertiary lithologic reservoir, stratigraphic onlap unconformity reservoir, structural-stratigraphic reservoir and pre-tertiary unconformity reservoir of stratigraphic degradation, the narrow-abrupt slope zone develops fault block oil reservoir, fault block-stratigraphic oil reservoir and rolling anticlinal oil reservoir and the double-structure slope belt develops buried hill oil reservoir, stratigraphic unconformity oil reservoir and fault block-lithologic hydrocarbon reservoir. Based on the above, we can explore them by means of integrated geologic analysis, high resolution sequence stratigraphy and log constrained inversion and 3D-visualization comprehensively. It is very efficient exploration of slope zones and will provide some experience for exploration on slope zones of the similar basin.