The Cretaceous Mishrif Formation in the west UAE, East Rub al Khali Basin has got new discoveries; however, there is a lack of systematic and detailed research on the sedimentology, sequence stratigraphy and reservoir distribution of Mishrif Fm. Based on large amount of core and thin section observations, well logging and seismic interpretation, the sedimentary facie association, sequence stratigraphy, and sedimentary evolution of the Mishrif Formation are studied. Moreover, the distribution law and quality of the reservoir are characterized and evaluated. A set of platform carbonate rocks deposited as the Mishrif Formation in the research area, and five typical facie associations are recognized, including rudist-bearing reef, grain shoal, inter-shoal channel/hollow and fore-shoal slope. On this basis, a comprehensive sedimentary evolution model is established. The Mishrif Formation is interpreted as three third-order sequences and six forth-order sequences. In SQ1 and SQ2 sequences, a set of rimmed platform deposited, and ramp deposited in SQ3. Multi-stage platform margins and rudist-bearing reefs develop in HST (highstand systems tract cycles), and successively progradation to the Shilaif sub-basin in the east. The Mishrif reservoir is mostly composed of rudstone, grainstone, and packstone, with well-developed intergranular and dissolved pores. The total porosity reaches above 20%, and the permeability is 1–100 md. The reservoir quality is strongly controlled by facies’ associations and dissolution near sequence boundaries. Reef-shoal reservoirs near sequence boundaries in top of HST have higher porosity and permeability than those in other facies belts and position of sequence.

阿联酋西部East Rub al Khali盆地白垩系Mishrif组获得新发现；但对Mishrif组的沉积学、层序地层学和储层分布缺乏系统细致的研究。在大量岩心和薄片观测、测井和地震解释的基础上，研究了Mishrif组的沉积相组合、层序地层和沉积演化。此外，还对储层的分布规律和质量进行了表征和评价。研究区为Mishrif组沉积的一套台地碳酸盐岩，识别出5个典型的相组合，包括含rudist礁、颗粒滩、滩间河道/空心和前滩斜坡。以这个为基础，建立了综合的沉积演化模型。Mishrif 组被解释为三个三级层序和六个四级层序。在 SQ1 和 SQ2 序列中，一组边缘平台沉积，斜坡沉积在 SQ3。HST（高位系统域旋回）发育多期台缘和陆基礁，并先后向东部的希莱夫次盆地进积。Mishrif 储层主要由砾岩、颗粒岩和泥灰岩组成，粒间孔和溶孔发育。总孔隙度达到20%以上，渗透率1～100 md。储层质量受到层序边界附近相组合和溶蚀的强烈控制。