In University of Tyumen there was calculated a maximum volume of additionally produced oil
In University of Tyumen there was calculated a maximum volume of additionally produced oil
Physics of University of Tyumen have developed the methodology of rapid assessment of optimal technological parameters of cyclic steam soaking.
In oil and gas industry in Russia and other countries there are further challenges:
a proportion of hard to recover reserves is increasing, a quantity of remaining oil in place are becoming worse, the volumes of hydrocarbons reserves increment are decreasing, exploitation of many huge and unique oil-fields comes into the last stage; an oil extraction on conventional plays is decreasing.
All these reasons are pushing the oil companies to focus on enhanced oil recovery methods: physic-chemical, microbiologic, hydrodynamic, thermal, gaseous, and preventive.
Innovative, so-called tertiary advanced recovery methods (ARM) are developing and finding an industrial application. Tertiary ARM is a massive reservoir stimulation that demands the scientific technologies involving, promotes more rational using of original reserves by oil recovery index (ORI) increasing. Tertiary ARM allow achieving ORI up to 40-70 %.
An article ‘Identification of main technological parameters of cyclic steam of reservoir stimulation with consideration to thermal losses inside wellbore’ of Physical-Technical Institute TSU physics Aleksander Gil’manov, Tatiana Kovalchuk, Aleksander Shevelev was published in scientific review ‘Computational mechanics of continuous medium’.
In the article there is a prognosis regarding increasing of oil extraction by tertiary ARM until 2040. In Russia the tertiary ARM are the mostly used as by them until 70% of all oil volume are recovering.
Tertiary ARM have a high potential for ORI increasing and comparative low expenses of oil production. Cyclic steam soaking (CSS) – one of the most practicing methods on high-gravity oil pool.
For successful reservoir’ engineering of heavy oil there are needed the approaches alloying to analyze and predict accurate their behavior during the time and under external influence, that are providing to increase an oil production.
No less important and actual a question of rapid assessment of a project pipeline’ status according with current CSS’s technological parameters with the possibility of their correction.
So in this article the scientists proposed the complex approach for the first time that allows to combine the tasks of heat CSS’s transfer transportation and an establishment of the production regime’ optimal parameters by CSS.
A complex methodology was developed that includes the use of data that were produced by the short-time dynamic temperature investigations, and allow calculating the heat-transfer agent parameters inside a drilling face zone that are needed for achieving main technological parameters of place.
There were indicated an optimal time for heat-transfer agent pumping, exposure time of wells for condensation and oil extraction. According to depth there were build the well for pressure, temperature, and speed and dryness fraction. Speed and dryness fraction are decreasing with increase depth as per law more to line wise and temperature and pressure are mostly increasing linearly.
There was found a heat-exchange formation coefficient according to the temperature between the lays of wells, water and formation.
The counting showed that the temperature in multiple-layer wall of well is decreasing almost until 80% by basalt fibre lay. As per bottom-hole conditions of heat-transfer agent the maximum possible volume of additionally produced oil was calculated.
a proportion of hard to recover reserves is increasing, a quantity of remaining oil in place are becoming worse, the volumes of hydrocarbons reserves increment are decreasing, exploitation of many huge and unique oil-fields comes into the last stage; an oil extraction on conventional plays is decreasing.
All these reasons are pushing the oil companies to focus on enhanced oil recovery methods: physic-chemical, microbiologic, hydrodynamic, thermal, gaseous, and preventive.
Innovative, so-called tertiary advanced recovery methods (ARM) are developing and finding an industrial application. Tertiary ARM is a massive reservoir stimulation that demands the scientific technologies involving, promotes more rational using of original reserves by oil recovery index (ORI) increasing. Tertiary ARM allow achieving ORI up to 40-70 %.
An article ‘Identification of main technological parameters of cyclic steam of reservoir stimulation with consideration to thermal losses inside wellbore’ of Physical-Technical Institute TSU physics Aleksander Gil’manov, Tatiana Kovalchuk, Aleksander Shevelev was published in scientific review ‘Computational mechanics of continuous medium’.
In the article there is a prognosis regarding increasing of oil extraction by tertiary ARM until 2040. In Russia the tertiary ARM are the mostly used as by them until 70% of all oil volume are recovering.
Tertiary ARM have a high potential for ORI increasing and comparative low expenses of oil production. Cyclic steam soaking (CSS) – one of the most practicing methods on high-gravity oil pool.
For successful reservoir’ engineering of heavy oil there are needed the approaches alloying to analyze and predict accurate their behavior during the time and under external influence, that are providing to increase an oil production.
No less important and actual a question of rapid assessment of a project pipeline’ status according with current CSS’s technological parameters with the possibility of their correction.
So in this article the scientists proposed the complex approach for the first time that allows to combine the tasks of heat CSS’s transfer transportation and an establishment of the production regime’ optimal parameters by CSS.
A complex methodology was developed that includes the use of data that were produced by the short-time dynamic temperature investigations, and allow calculating the heat-transfer agent parameters inside a drilling face zone that are needed for achieving main technological parameters of place.
There were indicated an optimal time for heat-transfer agent pumping, exposure time of wells for condensation and oil extraction. According to depth there were build the well for pressure, temperature, and speed and dryness fraction. Speed and dryness fraction are decreasing with increase depth as per law more to line wise and temperature and pressure are mostly increasing linearly.
There was found a heat-exchange formation coefficient according to the temperature between the lays of wells, water and formation.
The counting showed that the temperature in multiple-layer wall of well is decreasing almost until 80% by basalt fibre lay. As per bottom-hole conditions of heat-transfer agent the maximum possible volume of additionally produced oil was calculated.