Application Of Log-constraint Inversion Technique In Comprehensive Analysis Of Complex Oil-gas Reservior.

In this paper, It has obtained the breakthrough for crack research technique andthe practice of the volcanic rock, theses research technique and method include studyof seismic attribute, coherent slice of three dimension seismic body, Flexural Strengthetc. Through observation of the core sample, analysis of casting thin slice, loging anddrilling analysis, the author represent a set of system volcanic rock research techniqueand the research procedure, and the research is used to predict oil and gas.The paper has described property of igneous rock and oiliness igneous rock, Itrepresent that igneous rock reservoir has low density, low Sonic speed, there are rangefor neutron value, more higher degree difference of shallow and deep resistivityloging, but deep loging resistivity Increases obviously. For oiliness igneous rock,shallow loging resistivity is no changing and for igneous rock reservoir. Author plotthe reservoir distribution map and effective thickness distribution map of igneous rockof mesozoic for research area.The study of pressure forecast method by seismic and well restraining inversion:the first, having seismic bed velocity, it is established for the precise velocity field bywell restraining inversion data; Using the Fourier trend analysis to take the normalcompaction tendency seismic bed velocity; the second, the pressure coefficient fieldis obtained by deriving Fillippone law; Finally abnormal pressure distributed rulestudy from the pressure coefficient field, Thus obtains abnormal pressure distributionmap of the goal stratigraphic interval, and the distribution map of oil gasadvantageous area by unusual pressure chart and oil/water relationship of typicalwells, and structure, reservoir of study area.