苏25区块盒8段-山1段储集层特征研究

Study on reservoir characteristics of He 8 member-Shan 1 member in Su 25 block

通过分析储集层地震反射类型及平面分布特征,结合钻井、测井及均方根属性(RMS)等,系统地对苏25区块盒8段-山1段储集层特征进行了综合研究,并认为:苏25区块储集层极为发育且分布广泛,有利储集层在地震剖面上主要表现为Ⅰ型、Ⅱ型与Ⅷ型3种地震反射特征;沉积相对储集层发育有明显控制作用,与山1段曲流河沉积相比,盒8段辫状河沉积储集层砂体更为发育,且大面积连片分布。此外,由于气源充足,富集区外围发育规模较小的储集层能够独立成藏,为区内下一步勘探指明方向。

Based on the analysis of seismic reflection types and plane distribution characteristics of reservoirs,combined with drilling,well logging and root mean square(RMS)attributes,the authors systematically studies the reservoir characteristics of He 8-Shan 1 members in Su 25 block.It is considered that the reservoirs in Su 25 block is very developed and widely distributed.There are three types of seismic reflection characteristics of favorable reservoir in seismic profile:typeⅠ,typeⅡand typeⅧ.Sedimentary facies has obvious control effects on the development of reservoirs.Compared with meandering river deposition of Shan 1 member,the sand bodies of braided river sedimentary reservoir in He 8 member are more developed and continuously distributed in large area.In addition,due to the sufficient gas supply,the smaller reservoirs developed on the periphery of the enriched area can independently form reservoirs,pointing out the direction for further exploration in the area.