关键词: 泥灰岩, 裂缝性储层, 储层参数反演, 方位各向异性, 束鹿凹陷

Abstract: The muddy limestone compact hydrocarbon reservoir in Shulu sag is one of the important exploration areas in Huabei Oilfield because of its abundant remaining resources. The matrix features in small pore throat, weak connectedness and strong anisotropism. As the development of fractures is a decisive factor to hinder the pay bed from forming reservoirs, precisely forecasting the muddy limestone area has become a key emphasis in work. Techniques of pseudo-acoustic wave inversion optimization, reservoir parameter inversion, stress field simulation and attribute azimuthal anisotropy are used to accurately depict the spatial pattern, shale content, strain-stress characteristics and azimuthal anisotropy of the muddy limestone, based on which indicates the development area of muddy limestone fracture. The forecast finding provides important reference for the ST-1H well geometric arrangement and track design. The drilling result proved the accuracy of the forecast result and feasibility of the forecast method.