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有机质在层控铅锌矿床中的作用已受到普遍重视。本文的实验研究内容和主要研究成果包括如下三个方面:1.Cu2+,Pb2+,Zn2+在共存的水相和油相中分配系数与温度和溶液成分关系的实验研究,证明在酸性条件下Cu,Pb,Zn元素95%以上趋向于在水溶液中,而在弱碱性条件下这些元素有强烈的在油相中富集的趋向,表现出典型的卟啉化合物的特征;2.矿物在油田卤水和相同盐度的CaCl2-NaCl溶液中溶解度的对比实验研究,讨论了金属元素在油田卤水中的无机络合作用和有机络合作用之间的竞争能力;3.在人工组合双源层和温度压力同时作用的压力机条件下,进行了油气生成和运移过程对Pb,Zn元素活化迁移的实验研究,实验证明,新生成原油(氯仿沥青A)中获得了Zn的52~769μg/g的高丰度,其中经过初次运移的原油往往含有更高含量的金属元素。因此,有理由认为在一定的成熟度范围内原油相可能是Pb,Zn等多金属元素迁移富集的重要载体和成矿流体的重要组成部分
The role of organic matter in stratabound lead-zinc deposits has received widespread attention. The experimental research content and main research results include the following three aspects: 1. Cu2 +, Pb2 +, Zn2 + in the coexisting aqueous and oil phase partition coefficient and temperature and the relationship between the solution composition experiments show that under acidic conditions, Cu, Pb, Zn element 95% or more tend to be in aqueous solution, and weak base These elements have a strong tendency of enrichment in the oil phase under the sexual conditions, showing the typical characteristics of porphyrin compounds; 2. The comparative study on the solubility of minerals in the brine and the same salinity CaCl2-NaCl solution discussed the competitive ability of the metal elements in the organic complex in the oilfield brine.3. Experiments on the activation and migration of Pb and Zn elements during the process of hydrocarbon generation and migration have been carried out under the conditions of a combination of double source layer and temperature and pressure. Experiments show that the new generation crude oil (chloroform bitumen A) High abundance of 52-769 μg / g of Zn, where crude oil initially migrated often contained higher levels of metallic elements. Therefore, it is reasonable to assume that the crude oil phase may be an important carrier of migratory enrichment of Pb, Zn and other metalloids and an important component of ore-forming fluid within a certain maturity range