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Phase behavior of hydrocarbon systems in water-saturated sand reservoir at hydrate formation conditionsстатья
- Авторы: Buleiko V.M., Vovchuk G.A., Grigoriev B.A., Istomin V.A.
- Сборник: Vesti gazovoy nauki · Digest 2014
- Год издания: 2014
- Место издания: ООО Газпром ВНИИГАЗ Москва
- Первая страница: 94
- Последняя страница: 100
- Аннотация: In connection with forthcoming development of Chayandinskoye oil/gas condensate fi eld (OGCF) with low reservoir temperatures of production level it is necessary to estimate the risks of hydrating in bottom-hole zone of formation. With this objective, using the method of adiabatic calorimetry, thermodynamics and kinetics of alkanol-type hydrates of individual hydrocarbons formation and disintegration processes have been investigated, as well as those of six-component gas mixture, modeling composition of formation gas at Botuobinskaya deposit of Chayandinskoye oil/gas/condensate fi eld. Testing rig, research method The experimental complex of adiabatic calorimeters allows carrying out measurements of thermodynamic parameters (temperature, pressure, enthalpy) for hydrocarbon systems in the temperature range of 110–420 K at pressures up to 60 MPa. Measurements have been carried out using the method of the State Standard Reference Data Service registered in the Russian Scientifi c /Technical Information Center for Standardization, Metrology, and Estimation of Conformity described in detail in [1, 2]. There, one can also fi nd description of methods for sample preparation, and fi lling of calorimetric cell with water and gas, as well as research procedures. Porous medium has been modeled by granulated quartz sand, grain size 25–38 microns (average grain size – 31,5 microns). As gas hydrating agents both pure components (methane, ethane and propane) and a model six-component mix have been used. the adiabatic calorimetry method has been used to investigate phase behavior of ‘water / six-component mix’ system at thermobaric conditions for potential hydrate formation of rather complicated nature. New aspects of metastability occurrence in hydrocarbon systems with hydrates formation have been found. Infl uence of thermal background on the nature of the system and sequence of phase transitions of hydrates into ice has been revealed. Behavior of ‘water / light hydrocarbons’ in similar experiments has been compared. A hypothesis in relation to physical reasons of thermal background impact effects in systems under consideration has been suggested
- Добавил в систему: Истомин Владимир Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | vgn-digest-2014-094-100.pdf | 369,3 КБ | 7 февраля 2016 [Istomin] |