井-震-演联合地层对比技术在薄层复杂碎屑岩油藏描述中的应用

The application of Combined well-seismic-conversion in thin complex clastic reservoir description

小层划分与对比是油田开发方案实施的基础,对于薄层复杂碎屑岩油藏而言,常用的方法不能解决油藏的小层对比问题。为了解决类似油藏所普遍存在的难题,在塔河油田三区石炭系卡拉沙依组砂泥岩段油藏描述中,采用了井震演联合地层对比划分技术,在小层划分中主要参考了高分辨率反演成果,从砂层组到小层划分循环迭代,逐级划分,细化了卡拉沙依组油藏开发的小层对比和划分。并且,从主力含油砂体描述成果对油水关系分析来看,小层划分对比结果是合理的,小层对比划分方法是可行的。

Thin layer division and contrast is the base of applying development plan in oilfield.To thin complex clastic reservoir,the problem on thin layer contrast can not be solved by common method.To solve similar problem,in Carboniferous Kalashayi Formation sand-mudstone reservoir description of Block 3 in Tahe Oilfield,applying well-to-seismic integrating stratigraphic correlation and classification method,referring to high-resolution inversion utilization of thin layer division,after gradual division from sand beds to thin layer division cyclic iteration,thin layer division and contrast in Kalashayi Formation reservoir development is refined.Moreover,through analyzing oil-water relationship of main oil-bearing sandstone description utilization,the result of thin layer division and contrast is reasonable,and the method of thin layer division and contrast is feasible.