麻木乌苏区块赛1井储层工程地质特征及工艺优化研究

Study on reservoir engineering geological characteristics of well SAI 1 in Mamuwusu Block and process optimization

通过赛1井巴音戈壁组的岩石薄片、常规孔渗、压汞、岩石力学及地应力测试等实验分析,结果表明:在路井凹陷近洼缓坡带部署的赛1井巴一段储层岩性主要为岩屑长石砂岩、长石岩屑砂岩和岩屑石英砂岩,物性较差,属于特低孔低渗储层。孔喉半径细小、分选差,分形维数高,渗流通道表面极粗糙、褶皱。水敏程度中等偏强。杨氏模量28.51~48.02GPa之间,泊松比在0.19~0.29之间,参数变化较大。巴音戈壁组砂岩动态杨氏模量与静态杨氏模量满足线性关系,动静态泊松比相差不大。赛1井的储层工程地质特征为勘探开发和储层改造技术提出了较高的要求。

Based on the experimental analysis of thin sections, conventional porosity and permeability, mercury injection, rock mechanics and stress test of the K1b formation in well Sai 1, the results show that: Well Sai 1 near the gentle slope of the Lujing Sag is mainly lithic feldspar sandstone, feldspar lithic sandstone and lithic quartz sandstone. It belongs to ultra-low porosity and low permeability reservoir with poor physical property. The pore throat radius is small, the sorting is poor, the fractal dimension is high, the seepage passage surface is extremely rough. Water sensitivity is strong. Young modulus ranges from 28.51 to 48.02 GPa, Poisson ratio ranges from 0.19 to 0.29, and the parameters vary greatly. The dynamic and static Young’s Moduli of the sandstone of the K1b formation are linear, the dynamic and static poisson ratios are not very different. The difference between the maximum horizontal principal stress and the minimum horizontal principal stress is large and changes quickly. In summary, the reservoir engineering geological characteristics of well SAI 1 put forward higher requirements for exploration and development and reservoir reconstruction technology.