Fine anatomy of reservoir architecture of point bar in meandering river: a case study of Minghuazhen Formation in northern block of Q oilfield,Bohai Sea

In order to solve dynamic Problems caused by the internal structure of fluvial reservoir,it is necessa-ry to study the fine anatomy of Point bar. Taking Minghuazhen Formation in the northern block of Q oilfield, Bohai Sea as an examPle,the authors studied identification marks,distribution Pattern and scale of Point bar based on coring,logging and dynamic data. The results show that the length of Point bar and the width of lateral accretion body are 713-911 m and 71-111m,resPectively;the diP angle and the thickness of lateral accretion bedding are 3. 5o-5. 9o and 0. 1-0. 5 m. The lateral accretion beddings are the key factor affecting the seePage velocity of the tracer.

敢啃硬骨头的河长 善啃硬骨头的机制

宁波计划整治“三河”480条,这些“三河”问题往往都是十几年积累下来的,条条都是难以啃下的硬骨头,对于这些情况糟、条件差、治理难的“责任田”,宁波的河长们是如何攻坚,如何破局的？发挥河长能量敢啃硬骨头鄞州的西塘河,水面宽阔,绿水盈盈,两岸新植的绿树的影子在水上荡漾。可就在一年半前的西塘河,是另一番景象：岸上,违章搭建遍布,40米宽的河面,让违章建筑挤成了不到20米宽。