用地层倾角测井资料解释复杂构造的方法

A METHOD OF INTERPRETING COMPLEX STRUCTURES WITH DIPMETER DATA

倾角测井矢量图可以标示出井眼范围内各深度点的地层产状，一定的地层构造形态在矢量图上有一定的倾角矢量组合模式。通过正演计算，总结出了１９种褶曲和断层等构造组合模式的样板及在一口井内各构造模式间的“串”、“缺”、“嵌”连接规律。对照组合模式样板进行矢量组合模式识别，采用“倾角矢量逐点叠加法”，可把井眼范围纵向排列的倾角矢量转换成任意方位的地层视产状，绘制构造剖面图。用多个剖面的地层空间坐标数据可绘制倾角构造平面图，确定钻遇构造的形态。据此原理，编制了一套倾角测井构造解释软件系统。

ipmeter vector maps can be considered to mark strike-dip of rocks at different depths of a borehole, its apparent strike-dip in different parts of a structure can be reflected by the dip vectors. Therefore, the structure with specific shape is represented as a designated dip vector combination in the vector maps. 19 types of maps of structure combinations of folds and faults are summarized from the forward calculation. In the light of the maps, structures found bydrilling can be classified with dipmeter data and geologic principles. The method of pointbypoint stack can be used to calculate apparent dips in any direction with vertical arrangement of dip vectors within boreholes. For drawing sections the dip profiles of the structures can be constructed. Based uPOn the principles mentioned above a software system is developed for structure interpretation with dipmeter data.