复杂断块油气藏的地震解释技术——以东营凹陷中央背斜带为例

The seismic interpretation technology of the complicated fault block oil reservoir:a case history of the central anticlinal belt in Dongying sag

随着勘探开发工作的深入,形态清楚、规模较大的构造油气藏探明程度已很高。自然地,岩性、地层等复杂隐蔽型油气藏成为各油区勘探的重点。复杂断块油气藏是一种重要的隐蔽型油气藏类型,占有陆相断陷盆地很大的储量份额,但这类油藏构造复杂、隐蔽性强,识别与描述十分困难。本文以东营凹陷中央背斜带为例,系统总结了地震正演模拟、相干分析等地震解释技术及其在复杂断块油气藏勘探开发中的应用情况,期望对相关地区勘探提供一定借鉴。

The clearer and larger structure reservoirs are almost ascertained along with the development of exploration and exploitation. Naturally, the stratigraphic and lithologic traps of the complicated subtle hydrocarbon reservoirs have been become exploration targets in each oil field. The complicated fault block reservoir is an important hydrocarbon reservoir, which account for considerable proportion in continental rift basin at present. But they are very difficult to distinguish and describe as their complicated and subtle in structure. In the paper, some technologies and their applications, such as seismic forward modeling and the seismic coherent analysis etc, are systematically summed up taking the central anticlinal belt in Dongying sag as example. We hope it can give a reference to related exploration in other regions.