Abnormal pressure is formed by uneven degradation causing a great elevation difference . 4 不均匀剥蚀情况可造成地形较大的高差,从而导致压力系数异常,形成异常压力。
Due to the above reason the association of sandstone and mudstone is important to the form of abnormal pressure zones 基于以上原因,砂泥岩组合型式对异常超压带的发育有重要影响。
The appearance of abnormal pressure is related to lithology , lithology association , porosity permeability and compressibility of rock 其中异常超压的产生与岩性及其组合、岩石的孔隙度及渗透率、压缩性等因素有关。
Hut different structural units have different characteristics in initial horizon , initial depth of abnormal pressure and their section features 各构造单元在异常高压初始层位、初始深度、剖面特征等方面又有不同特点。
The calculation in wangjiatun - shengping area also suggests that there surely exist deep abnormal pressure and it affects the distribution of natural gas in this area 汪家屯升平地区的实际计算表明,深层压力异常确实存在,并影响着本区天然气的分布。