大多数地质学家认为石油像煤和天然气一样,是古代有机物通过漫长的压缩和加

Most geologists believe that oil, like coal and natural gas, is gradually formed by ancient organic matter after a long period of compression and heating. According to this theory, oil is formed by the changes of prehistoric marine animals and algae corpses. After a long geological age, These organic substances are mixed with silt and are buried under thick sedimentary rocks. After high temperature and high pressure, they are gradually transformed into waxy oil shale, which later degenerates into liquid and gaseous hydrocarbons, which penetrate upwards into nearby rock formations. Until it encounters the caprock, the gathered oil forms an oil field. <br>To generate a large amount of oil and gas, firstly, there must be a rich source of organic matter, that is, there must be an ancient space for the accumulation and preservation of the organisms after the mass reproduction and the death of organisms. geographical environment; second, the accumulation of organic matter down after the burial, must quickly reach the temperature of the oil and gas conversion, will generate a large number of oil and gas, to achieve this condition it is necessary to have a long-term stable sinking tectonic environment. <br>organic matter to The conversion of oil and gas is a complex process of chemical changes. The occurrence of any chemical change requires certain conditions, and the generation of oil and gas is no exception. In the process of the conversion of organic matter to oil and gas, bacterial action, temperature, time, pressure, catalysts, etc. are indispensable Less physical and chemical conditions.

Most geologists believe that oil, like coal and natural gas, was formed gradually by long periods of compression and heating. According to this theory, oil was formed by changes in prehistoric marine animals and algal carcasses. After a long geological period, these organic matter and silt mixed, buried under thick sedimentary rock, after high temperature and high pressure gradually transformed, first formed waxy oil shale, and then degenerated into liquid and gaseous hydrocarbons, which penetrated upward into the nearby rock formations, until the cover layer, gathered together to form oil fields.<br>In order to generate a large amount of oil and gas, the first must have a rich source of organic matter, that is, must have a large number of reproduction and biological death of its organism accumulation and preservation of the ancient geographical environment;<br>The transformation of organic matter into oil and gas is a complex process of chemical change. Any chemical change needs certain conditions, oil and gas production is no exception, organic matter to oil and gas transformation process, bacterial action, temperature, time, pressure, catalyst and so on are essential physical and chemical conditions.

Most geologists believe that oil, like coal and natural gas, was formed gradually by ancient organic matter after a long period of compression and heating. According to this theory, oil was formed by the changes of prehistoric marine animals and algae corpses. After a long geological period, these organic matter mixed with silt, buried under thick sedimentary rocks, and gradually transformed through high temperature and high pressure, First, it forms waxy oil shale, then degenerates into liquid and gaseous hydrocarbons, which infiltrates into the nearby rocks until it meets the caprock, and the oil gathered together forms an oil field<br>In order to generate a large amount of oil and gas, firstly, there must be a rich source of organic matter, that is, there must be a paleogeographic environment for the accumulation and preservation of organisms after a large number of reproduction and biological death; secondly, after the accumulation and burial of these organic matter, it must reach the temperature of oil and gas transformation soon before a large amount of oil and gas can be generated, To achieve this condition, we must have a long-term stable subsidence tectonic environment<br>The transformation of organic matter to oil and gas is a complex process of chemical change. Any chemical change needs certain conditions, and the formation of oil and gas is no exception. In the process of transformation of organic matter to oil and gas, bacterial action, temperature, time, pressure and catalyst are essential physical and chemical conditions<br>