辫状河储层构型单元解剖及有效砂体分布规律

发布时间：2018-02-15 00:56

本文关键词： 储层构型有效砂体地下辫状河储层盒_下亚段苏里格气田　出处：《特种油气藏》2017年02期 　论文类型：期刊论文

【摘要】：苏里格气田盒_8下亚段(H_8x)辫状河储层砂体连续性和连通性差,非均质性强,为了更高效地进行气田开发,应用储层构型理论,以试验区苏××井为例,开展地下辫状河辫状水道、心滩识别及内部结构精细解剖,明确有效砂体分布规律。研究表明:心滩含气性明显好于辫状水道,辫状水道和心滩内部结构、局部岩性、物性差异共同控制有效砂体分布;辫状水道有效砂体主要位于下部粗粒沉积内;心滩迎流面除夹层外,均为有效砂体,心滩核部整体以有效砂体为主,非有效砂体局部分布,心滩背流面整体含气性最差,有效砂体主要分布在粒度较粗的中下部。心滩迎流面、核部及辫状水道下部应作为苏里格气田下一步精细开发的主要目的砂体。研究成果为苏里格气田水平井优化设计和气田高效开发提供精细的地质依据。
[Abstract]:The sand body of braided river reservoir has poor continuity and connectivity and strong heterogeneity. In order to develop the gas field more efficiently, the reservoir configuration theory is applied to develop the braided river braided channel in the experimental area, taking Su 脳脳 well as an example. The distribution of effective sand body is determined by identifying the inner structure and fine anatomy of the inner structure. The results show that the gas-bearing property of the core beach is obviously better than that of the braided channel, the internal structure of the braided channel and the core beach, and the local lithology and physical property difference control the distribution of the effective sand body together. The effective sand bodies of the braided channel are mainly located in the lower coarse grain deposits, except intercalation, they are all effective sand bodies. The core part of the core is dominated by the effective sand bodies, the local distribution of the non-effective sand bodies is local, and the overall gas content of the back flow surface of the core beach is the worst. The effective sand bodies are mainly distributed in the middle and lower parts with coarse granularity. The core and the lower part of the braided channel should be regarded as the main sand bodies for the further fine development of Sulige gas field. The research results provide the fine geological basis for the optimum design of horizontal wells and the efficient development of the gas field in Sulige gas field.
【作者单位】：中国石油长庆油田分公司;低渗透油气田勘探开发国家工程实验室;
【基金】：国家科技重大专项“鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程”(2016ZX05050)
【分类号】：P618.13;TE311

【相似文献】