地震精细描述技术在隐蔽油藏滚动开发中的应用——以高邮凹陷真武油田为例

Application of fine seismic reservoir description technologies in scrolling development of subtle oil reservoir: a case of Zhenwu Oilfield in Gaoyou Sag

苏北盆地高邮凹陷已进入勘探的高成熟阶段,构造油气藏的发现难度越来越大,隐蔽圈闭渐成为滚动勘探开发的重要研究目标。针对高邮凹陷隐蔽油藏砂体薄、横向变化快的预测难点,以真武油田戴南组岩性油藏为例,通过地震相分析、砂体地震响应特征正演模拟、地震精细储层预测等技术开展了砂体识别和描述,提高了隐蔽岩性小砂体描述精度,并在后期滚动开发中取得了较好应用效果。

The Gaoyou Sag in Subei Basin has entered a highly mature stage of exploration,and the discovery of structural oil and gas reservoirs is becoming more and more difficult. Subtle traps have gradually become an important research target for rolling exploration and development.Aiming at the difficulties in predicting the subtle reservoirs in Gaoyou Sag with thin sandbodies and rapid lateral changes,taking the lithologic oil reservoir of the Dainan Formation in Zhenwu Oilfield as an example,sandbody identification and description have been carried out using seismic facies analysis,forward modeling of sandbody seismic response characteristics,seismic fine reservoir prediction and other technologies,the description accuracy of small subtle lithologic sandbodies has been improved,and a good application effect in later rolling development has been accomplished.