沙东南—渤中地区馆陶组水资源量评价

海上油田对注入水质要求严格、水源研究日趋重要。沙东南-渤中地区为渤海油田重要产区,注入水源充足与否直接决定着油田开发生产是否顺利。本次针对该地区,对主要水源目的层馆陶组进行了水资源量评价研究工作。馆陶组储层系统研究表明,馆陶组砂岩虽然分布广、但厚度变化大、物性非均质性强,具体油田馆陶组水源条件因此有所差异。采用容积法对沙东南-渤中地区馆陶组储层水资源量进行了计算,该区馆陶组水资源量为3366×108m3,其中Ng1段水资源量为840×108m3;Ng2段水资源量为483×108m3;Ng3段水资源量为2043×108m3。总体水资源量比较充沛,能够满足沙东南-渤中地区各油田长期开发对水资源的需要,但分布复杂,需要针对具体油田进行深入研究。

Water resources evaluation of Guantao formation, Shadongnan-Bozhong region in Bohai bay basin

The water quality injected in offshore oilfield is very strict and the water resource study is more and more important. Shadongnan-Bozhong region is one of important oil&gas plays in Bohai Bay Basin. Whether there is enough water injected or not will have great effect on the production of oilfield. Aiming at the problem, the water resource of Guantao formation is evaluated. Systematic investigation shows that sandstone of Guantao formation distributes widely and has distinct thickness with different property and permeability. Different oilfield in this area therefore has different water resource condition. Then the water resource of Guantao formation is calculated with the volumetric method. The result is that the total water resource of Guantao formation is up to 3 366×108m3, of which the water resource of Ng1 is 840×108m3,Ng2 has 483×108m3,and the water resource of Ng3 is 2 043×108m3.In all the water resource is enough for the oilfield production of Shadongnan-Bozhong region. However water resource distribute law is very complex and further study must be done when some oilfield in the area is developed.