黄骅坳陷中区明下段末期构造应力场三维数值模拟

以翔实的地震、钻孔资料为基础建立了三维数值模型。对黄骅坳陷中区明下段末期的古构造应力场进行的模拟,获得成藏关键时刻凹陷内部空间的应力状态。指出挤压应力场中的相对低值区是油气聚积的有利区域,因为区内不仅存在开放的断裂系统,而且是最小主应力的汇聚中心,是油气运移的指向。该模拟结果可为分析油气运移、聚积规律提供重要的参考资料,为油气藏的进一步勘探开发提供依据。

Three-Dimensional Numerical Simulations of Tectonic Stress Field at the End of Minghuazhen Stage in the Central of the Huanghua Depression

Based on detailed earthquake and drilling data,this paper has carried out the 3-D numerical simulation of tectonic stress field at the end of Minhuazhen stage in the central of the Huanghua depression and has obtained the interspaced stress state at the key point of the formation of the oil-gas reservoir.It is believed that the low stress value part in the compression stress field is favorable for petroleum accumulation,because the open faults system and the convergent center of least principle stress,which indicating the direction of petroleum migration,are located in this part.This simulation has provided evidences for analyzing the principle of petroleum migration and accumulation and for further exploring petroleum resources in the area.