6. The comprehensive analysis think that the main four formation—lithology trap types are the lithological trap with sand body upward pitchout, the lithological one with sandstone lens, formation lithology one and complex lithological trap;
According to the results of analysis of reservoir forming conditions of lithological oil reservoir and statistical results of large amount of testing data in Dongying sag, the pressure corresponding to 50% of Hg-injection was taken as equivalent hydrocarbon displacement pressure to evaluate the resistance of primary migration of oil and gas into the lithological trap quantitatively.
The sequence stratigraphy,sedimentology and petroleum geology were used to study the architectural model of sequence stratigraphy controlling the distribution of litho-trap in deep-water lake of Songliao depressive basin.
Aiming at the questions that the structural traps have been difficult to find andthe research on the litho-traps was asked to be furthered in Hainan-Xianhe area,According to the theory of petroleum geology, high resolution sequence stratigraphyand the technology of geophysics, combined with the core data, the seismic data, thelogging data and the test data, the sequence stratigraphy and the litho-trap have beenstudied in this paper.