It has always been challenging to determine the ancient sedimentary environment and associated energy in deep-buried marine carbonates. The energy represents the hydrodynamic conditions that existed when the carbonates were deposited. The energy includes light and chemical energies in compounds and kinetic energy in currents and mass flow. Deep-buried marine carbonates deposited during the Ordovician depositional period in the eastern Tarim Basin result from a complex interplay of tectonics, sedimentation, and diagenesis. As a result, determining the ancient sedimentary environment and associated energy is complex. The natural gamma-ray spectrometry (GRS) log (from 12 wells) is used in this paper to conduct studies on the sedimentary environment and associated energy in deep-buried marine carbonates. The findings show that the values of thorium (Th), uranium (U), potassium (K), and gamma-ray without uranium (KTh) in a natural GRS log can reveal lithological associations, mineral composition, diagenetic environment, stratigraphic water activity, and ancient climatic change. During the Ordovician, quantitative analysis and determination of sedimentary environment energy are carried out using a comprehensive calculation of natural GRS log parameters in typical wells (penetrating through the Ordovician with cores and thin sections) of well GC4, well GC6, well GC7, and well GC8. The results show that GRS log can determine different lithology associations in typical wells than a sieve residue log. Furthermore, cores and thin sections can be used to validate the determination of lithology associations. Based on the determination of lithology associations, the lithology associations that reflect the sedimentary environment and associated energy can be analyzed in a new approach. Furthermore, the sedimentary environment energy curve derived from a natural GRS log can reveal hydrodynamic fluctuations during depositional periods, which will aid in the discovery of carbonate reservoirs, establishing sequence stratigraphic frameworks, and the reconstruction of sea-level changes in the future.

确定深埋海洋碳酸盐岩的古代沉积环境和相关能量一直是一个挑战。能量代表碳酸盐沉积时存在的水动力条件。能量包括化合物中的光能和化学能以及电流和质量流中的动能。塔里木盆地东部奥陶纪沉积期形成的深埋海相碳酸盐岩是构造、沉积和成岩作用复杂相互作用的结果。因此，确定古代沉积环境和相关能量是复杂的。本文利用天然伽马射线能谱（GRS）测井（来自12口井）对深埋海相碳酸盐岩的沉积环境和相关能量进行研究。研究结果表明，天然GRS测井中的钍（Th）、铀（U）、钾（K）和不含铀的伽马射线（KTh）值可以揭示岩性组合、矿物成分、成岩环境、地层水活度，以及古代的气候变化。奥陶系期间，通过对GC4井、GC6井、GC7井和井等典型井（岩心及薄片穿透奥陶系）自然GRS测井参数的综合计算，对沉积环境能量进行了定量分析和确定。 GC8。结果表明，与筛余测井相比，GRS 测井可以确定典型井中不同的岩性组合。此外，岩心和薄片可用于验证岩性关联的确定。在岩性组合确定的基础上，可以通过新的方法分析反映沉积环境和伴生能量的岩性组合。此外，由天然GRS测井得出的沉积环境能量曲线可以揭示沉积时期的水动力波动，这将有助于未来碳酸盐岩储层的发现、层序地层格架的建立以及海平面变化的重建。