Research On The Complex Structure Of Deep-layer In Linjiangnan Area And Reservoir Description

Linjiangnan area is one of the best areas of exploration effect in yingshan depression at present. The three dimensional seismic survey achievements were the key to its oil-gas exploration obtains the breakthrough. Through the last three dimensional seismic data interpretation work, we not only confirmed the NW structure control factor, but also found the influence of two NW fault zone on structure distribution. The sedimentary cover may be divided into four different characteristic structural stages. In various structural stages fault characteristic has some inherited development, but also has some dissimilarity. It shows the obvious different tectonic movement at the difference geology period. This made the current fundamental structure characteristics which are the upside depression and the lower part fault falling with expansion fault block primarily. Structural styles in this area: expansion fault blocks, twisting structure compound patterns and reverse structure. The structure characteristic including fault falling, fault-depression changing, depression and depression shriveling. Underneath two kinds of mechanism which are extend and thermal uplift, the fault fall took shape during the course of simply shear extends.Some base data is used to study the geology and seismic attributes of igneous reservoir,especially the changing features of internal frequency and amplitude in igneous rock so as to conform the changing features and general rules of frequency and amplitude in igneous body where igneous rock fracture exists.The methods for predicting igneous reservoir are studied ,including seismic attributes,slice comparison technique and so on.Based on these methods ,a series of prediction techniques for igneous reservoir are established.