论文部分内容阅读
以北大港油田为例，研究利用地震、井孔崩落和水压致裂等资料，在逐项分析的基础上，再参考断层稳定性理论，通过综合分析确定油田现代构造应力场的实用方法。认为北大港油田及邻近地区现代构造应力场的主要特征是：①总体上处于正断层型应力状态；②主应力方向变化较大，看不出一致的优势方向；③水平差应力大小随地点和深度变化也较大。讨论了所得结果的可能应用。
Taking Beidagang Oilfield as an example, this paper studies the practical methods for determining the tectonic stress field of modern oilfield by comprehensive analysis based on item-by-item analysis with reference to the fault stability theory and by using the data of earthquakes, borehole caving and hydraulic fracturing. The main characteristics of the modern tectonic stress field in Beidagang Oilfield and its adjacent areas are: ① generally in the normal fault type; ② the direction of the major stress changes greatly and can not be seen as a consistent predominant direction; ③ the horizontal difference stress varies with the location and Depth changes also larger. The possible applications of the results obtained are discussed.