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据显微观测和流体包裹体的激光拉曼分析结果,在四川省开县,金株-罗家地区下三叠统飞仙关组,含H_2S气藏的碳酸盐岩储层样品中发现含元素硫、液态烃、沥青等多种形态特殊的不混溶包裹体．根据地层岩性、埋藏史和流体包裹体均一温度、沥青反射率等测定结果,气藏中H_2S的成因主要是含烃储层在晚白垩世时期,经受140～170℃的高温油裂解成气阶段,烃类与含膏云岩层段中的CaSO_4热反应生成的(TSR)．储层中大量不混溶包裹体的研究结果,揭示了元素硫的形成是在第三纪区域抬升降温减压阶段,含H_2S的天然气储层在温度86～89℃,压力(305～340)×10~5Pa的地质流体中,部分H_2S受氧化以及硫硫酸盐与烃类和H_2S进一步反应的结果．同时在此期间生成的石膏-硬石膏、方解石矿物捕获了元素硫等微粒,形成了一批形态特殊的不混溶包裹体,它们充分记录了储层流体的复杂情况与气藏中H_2S和元素硫的成因信息．
According to microscopic observations and laser Raman analysis of fluid inclusions, it was found in samples of carbonate reservoirs containing H 2 S gas reservoirs in Feixianguan Formation in Lower Triassic, Kaixian-Jinjia-Luojia area, Sichuan Province Elemental sulfur, liquid hydrocarbons, asphalt and other forms of special immiscible inclusions. Based on the lithology, burial history, homogenization temperature of fluid inclusions and reflectivity of bitumen, the origin of H 2 S in the gas reservoirs is mainly that hydrocarbon-bearing reservoirs were cracked into gas at high temperature of 140-170 ℃ during the Late Cretaceous Phase, Hydrocarbons Generated by Thermal Reaction with CaSO 4 in Layers Containing Palygorskite (TSR). The results of a large number of immiscible inclusions in the reservoirs reveal that elemental sulfur formation occurred during the period of up-cooling and depressurization in the Tertiary region. The natural gas reservoirs containing H 2 S are at temperatures of 86-89 ° C and pressures of 305-340. × 10 ~ 5Pa geological fluids, part of the H 2 S oxidation and the results of further reaction between sulfur and hydrocarbons and H 2 S. At the same time, the gypsum-anhydrite and calcite minerals generated during this period captured the elemental sulfur and other particles and formed a number of special-shaped immiscible inclusions. They fully documented the reservoir fluid complexity and the H 2 S and element Genesis of sulfur information.