夹层是油层内的非有效储层,表现为物性差,孔隙度一般小于10%,渗透率小于0.010μm2。双河油田厚油层发育,具有多夹层、多韵律类型的特点。夹层岩性主要为深灰色或灰色泥岩、粉砂质泥岩、泥质粉砂岩、泥质砂砾岩等。注水开发后,厚层内夹层是控制复杂水淹形式的主要地质因素,是合理调整层内注水结构和产液结构的基础。研究表明不同相带夹层稳定性相差较大,但只要合理利用夹层,就能缓解层内矛盾,提高厚油层开发效果。 Interbed is a non-effective reservoir in the reservoir, showing poor physical properties, the porosity is generally less than 10% and the permeability is less than 0.010μm2. Shuanghe Oilfield thick oil layer development, with multi-sandwich, multi-rhythm type features. Intercalation lithology is mainly dark gray or gray mudstone, silty mudstone, argillaceous siltstone, muddy conglomerate and so on. After the water injection is developed, the thick interbeds are the main geologic factors that control the complex flooding, which is the basis of adjusting the water injection structure and the liquid production structure in the layer reasonably. The research shows that there is a great difference between the stability of different facies belt layers, but as long as the interlayer is used reasonably, the contradictions in the layers can be alleviated and the development effect of thick oil layers can be improved.