EXTRACTION OF RESIDUAL CONTENT OF HIGH-MOLECULAR HYDROCARBONS DURING FIELD GAS PREPARATION
The relevance of the study is caused by the need to improve the efficiency of the allocation of valuable components from natural gas in field conditions.The existing gas treatment technologies of gas condensate fields are characterized by a low degree of extraction of propane-butane and ethane fract...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2019-03-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/174/71 |
| Summary: | The relevance of the study is caused by the need to improve the efficiency of the allocation of valuable components from natural gas in field conditions.The existing gas treatment technologies of gas condensate fields are characterized by a low degree of extraction of propane-butane and ethane fractions. It is known that natural gases of the Valanginian and Achimov deposits contain a large number of components necessary for petrochemical products. Field preparation of natural gas of gas condensate fields is usually based on low-temperature separation technology, where the extraction of liquid hydrocarbons from gas stream occurs by reducing the temperature by throttling, followed by separation of gas and liquid phases in independent separators. The technology has low efficiency and is limited by dependence on high pressures. The article deals with the issue of retrofitting gas treatment plants with small-sized high-performance equipment that provides deep cooling of the medium and simultaneous separation into components. The aim of the work is theoretical study of high-speed processes of natural gas preparation, numerical experiment for establishing the influence of the main parameters of the equipment on efficiency of separation of high-molecular components from methane. Objects: complex gas treatment plants of gas condensate fields, mean values of gas composition, critical parameters and derivative values of which correspond to the conditions of the Northern fields. Methods: construction of a mathematical model that takes into account gas component composition, determination of distribution of temperature, pressure, velocity, density and the Mach number of gas in a high-speed separator with separation into components. Results. The authors have proposed the technology of obtaining lower temperatures required for complex gas treatment of gas condensate fields. It is implemented on the basis of gas-dynamic high-speed technology with the use of the Ranque–Hilsh tube and Laval nozzle. The calculated dependences of extraction of propane-butane and ethane fractions on the achieved low temperatures are established. |
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| ISSN: | 2500-1019 2413-1830 |