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大民屯凹陷三台子洼陷勘探的关键问题是在大套砂砾岩体中识别出有效储层,这类围岩和储层的声波时差没有差异,运用波阻抗属性无法进行识别。而测井对比分析表明,含油砂砾岩段与围岩段的自然电位、电导率存在明显差异。因此选择自然电位、感应等对本区储层特征比较敏感的电性曲线,与地震信息建立联系,应用多参数岩性地震反演可有效识别储层。应用反演结果部署的两口探井均获工业油流。多参数岩性地震反演对类似储层的识别具有重要的借鉴作用。
The key issue in the exploration of the Santaizi Sag in the Damintun Depression is the identification of effective reservoirs in a large set of conglomerate bodies. There is no difference in the acoustic time differences between such sets of surrounding rocks and reservoirs, which can not be identified using wave impedance properties. The well logging correlation analysis shows that the natural potential and conductivity of the oil-bearing sand conglomerate and the surrounding rock are obviously different. Therefore, the electrical curves that are sensitive to the reservoir characteristics such as natural potentials and induction are selected to establish contact with the seismic information, and multi-parameter lithological seismic inversion can effectively identify the reservoir. The two exploration wells deployed by inversion results were both industrialized. Multi-parameter lithological seismic inversion has important reference for the identification of similar reservoirs.