The carbonate shoals are generally considered as the critical reservoirs in the carbonate sediments. However, whether the quality of reservoir directly related to the development of carbonate shoal is continuously debated. To further explore the control of carbonate shoal on the quality of reservoirs, the Longwangmiao Formation is selected as an example to examine this hypothesis. Based on the multiple techniques, four types of deposition environments were recognized, including the shoal, tidal flat, mixed tidal flat and intershoal. Moreover, three types of depositional stacking pattern (e.g., type A, B and C) were identified. Type A is characterized by continuously carbonate shoal deposits. Type B has two different sub-types which consist of basal shoal deposits that grade upward into tidal flat or mixed tidal flat deposits. For type C, one of the sub-types is dominated by the mudstone and upward evolve to the grainstone in the top. In contrast, the other sub-type consists of basal intershoal deposits that grade upward first into shoal deposits, and then into tidal flat deposits. The spatial variation of depositional cycles was mainly related to paleobathymetry and relative sea-level changes. In terms of physical properties, type A is favorable for the formation of the reservoir as the result of the high primary porosity and experienced meteoric dissolution and dolomitization. Inversely, the content of grain-riched sediments is less in type C and leads to low porosity. This study confirms that type A cycles are the key factor in the formation of carbonate reservoirs.

碳酸盐岩滩被普遍认为是碳酸盐岩沉积物中的关键储层。然而，储层的质量是否直接关系到碳酸盐岩滩的发育一直存在争议。为进一步探讨碳酸盐岩滩对储层质量的控制，以龙王庙组为例对该假设进行验证。基于多种技术，识别出四种沉积环境，包括浅滩、滩涂、混合滩涂和浅滩间。此外，确定了三种类型的沉积堆叠模式（例如，A、B 和 C 型）。A 型以连续碳酸盐浅滩沉积为特征。B 型有两种不同的亚型，包括向上分级为潮滩或混合潮滩沉积的基底浅滩沉积物。对于 C 型，其中一个亚型以泥岩为主，向上演化为顶部的粒状岩。相比之下，另一种亚型由基底浅滩沉积组成，首先向上分级为浅滩沉积，然后进入潮滩沉积。沉积旋回的空间变化主要与古水深和相对海平面变化有关。从物性上看，A型由于原生孔隙度高，经历了大气溶蚀和白云石化作用，有利于成藏。反之，C 型中富含颗粒的沉积物含量较少，孔隙度较低。本研究证实A型旋回是碳酸盐岩储层形成的关键因素。另一个亚型由基底浅滩沉积组成，先向上分级为浅滩沉积，然后为滩涂沉积。沉积旋回的空间变化主要与古水深和相对海平面变化有关。从物性上看，A型由于原生孔隙度高，经历了大气溶蚀和白云石化作用，有利于成藏。反之，C 型中富含颗粒的沉积物含量较少，孔隙度较低。本研究证实A型旋回是碳酸盐岩储层形成的关键因素。另一个亚型由基底浅滩沉积组成，先向上分级为浅滩沉积，然后为滩涂沉积。沉积旋回的空间变化主要与古水深和相对海平面变化有关。从物性上看，A型由于原生孔隙度高，经历了大气溶蚀和白云石化作用，有利于成藏。反之，C 型中富含颗粒的沉积物含量较少，孔隙度较低。本研究证实A型旋回是碳酸盐岩储层形成的关键因素。沉积旋回的空间变化主要与古水深和相对海平面变化有关。从物性上看，A型由于原生孔隙度高，经历了大气溶蚀和白云石化作用，有利于成藏。反之，C 型中富含颗粒的沉积物含量较少，孔隙度较低。本研究证实A型旋回是碳酸盐岩储层形成的关键因素。沉积旋回的空间变化主要与古水深和相对海平面变化有关。从物性上看，A型由于原生孔隙度高，经历了大气溶蚀和白云石化作用，有利于成藏。反之，C 型中富含颗粒的沉积物含量较少，孔隙度较低。本研究证实A型旋回是碳酸盐岩储层形成的关键因素。