论文部分内容阅读
断层面除受上覆地层重力的作用外，还要受到区域主压应力的作用。在考虑断层面所受上覆沉积物重力和区域主压应力作用的基础上，通过对断层垂向封闭性主要影响因素（断层面压力和断移地层性质）的深入分析，根据泥质岩塑性变形所需要的最小压力，利用断层面压力大小，探讨了断层垂向封闭油气性的研究方法，并将其应用于松辽盆地北部三肇凹陷汪家屯气田Ｗ１、Ｗ２、Ｗ３、Ｗ４断层和长春岭背斜带三站气田Ｓ１、Ｓ２、Ｓ３、Ｓ４断层的垂向封闭天然气的研究中，其研究结果与二个气田的实际地地质条件相吻合，表明该方法用于断层垂向封闭油气性研究是可行的。
In addition to being affected by the overburden gravity, the fault plane is also subject to principal compressive stresses in the region. Based on the analysis of the gravity of overlying sediments and the principal compressive stress in the fault plane, through the in-depth analysis of the main factors affecting the vertical sealing of the fault (fault pressure and faulted strata), according to the plasticity of shale Based on the minimum pressure required for deformation and the magnitude of the fault surface pressure, the study on the vertical sealing of faults in the fault is discussed and applied to the W1, W2, W3 and W4 faults of Wangjiatun gas field in Sanzhao depression and Changchun ridge In the study of vertically closed natural gas in the S1, S2, S3 and S4 faults of the anticline and the three gas fields in the anticline, the research results are consistent with the actual geological conditions of the two gas fields, indicating that the method is applied to the study of vertically closed faults It works.