利用声波时差资料恢复剥蚀量方法研究与应用

通过分析利用声波时差资料恢复剥蚀量方法原理及其适用条件,认为该方法能够解决滨北地区嫩江组末期之后地层的剥蚀问题。计算结果表明,嫩江组末期不整合面剥蚀量在不同地区差异较大,绥化凹陷的东1井、东401井所在地区剥蚀量大,向西北方向(东6、东7井方向)上剥蚀量开始变小,明水阶地的双2井剥蚀量相对较大,乾元构造带上的河2、克2井剥蚀量比东1、东401井小得多,到黑鱼泡凹陷剥蚀量又有所增大。10个井点反映的规律是嫩江组末期不整合面剥蚀量“南大北小”,在绥化凹陷呈现“东强西弱”的特征。

Recovering denudation thickness by interval transit-time

By analyzing the principle of the method of recovering the denudation thickness by interval transit-time and its application situation,the author thinks that the method can be used to solve the problem of denudation after the end of K_1n.The calculation result shows that the difference of the denudation thickness of the unconformity of different areas at the end of K_1n is very obvious:Dong 1 and Dong 402 areas in Suihua Depression have much large denudation thickness and it decreases towards the direction of Dong 6 and Dong 7,the denudation thickness of Shuang 2 in Mingshui terrace is larger;the denudation thickness of He 2 and Ke 2 in Qianyuan structure zone is much less than that of Dong1 and Dong 401,but the denudation thickness increases in Heiyupao Depression.The character of denudation thickness at the end of K_1n reflected by 10 wells can be described as "large in south,small in north" and "large in east,small in west" in Suihua Depression.