渤海复杂断块油田储量评价技术

Reserves evaluation technology of complex faulted-blocks in Bohai

渤海海域油气藏以复杂断块型为主,在储量评价过程中单元划分、界面选取、有效厚度确定等方面都面临很大困难。通过运用地震解释技术和储层描述技术明确了主力砂体的空间展布规律,为单元有效厚度的确定和含油气面积的选取奠定了基础;同时采用新的测井解释技术和电缆地层测试压力资料,准确确定了有效厚度下限、油气藏类型、流体界面及储层的连通性。通过针对性的攻关研究,总结出一套科学的储量评价思路、方法和技术。

Hydrocarbon reservoirs in Bohai are mainly complex faulted-blocks.During the process of reserves evaluation,great problems have been occurred,such as unit classification,interface selection and effective thickness determination.Through seismic interpretation technology and reservoir description technology,the spacial distribution of main sand bodies has been made clear,which lays good foundation for effective thickness determination and oil-bearing area selection.At the same time,in combination with new logging interpretation technology and cable formation testing pressure data,the lower limit of effective thickness,reservoir types,fluid interface and reservoir connectivity have been confirmed. Through specific research,a set of scientific reserves evaluation methods have been summed up,which can provide great guidance for reserves research of similar oilfields.