Petroleum Reservoir Evaluation and Development >
2020 , Vol. 10 >Issue 6: 110 - 114
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.06.017
Thermal effect caused by low-temperature oxidation of heavy crude oil under quasi-adiabatic condition
Received date: 2018-07-17
Online published: 2021-01-07
The influences of temperature, quartz sand, detritus and specific surface area of medium on thermal release caused by low-temperature oxidation of heavy crude oil of Jiqi Oilfield have been investigated by self-designed high-temperature and high-pressure heat tracking compensation equipment. The results show that the temperature is the significant factor regarding heat release induced by low-temperature oxidation of heavy crude oil. As the initial temperature increases, the increase in capability of oxygen consumption and heat liberated as well as the reduction in pressure. When the initial temperature is 160 ℃, the temperature is improved by 10.7 ℃ in the first 26 hours coupled with the pressure reduction of 2.26 MPa and 2.5 % of effluent oxygen concentration, showing obvious thermal effect caused by low-temperature oxidation of heavy crude oil. Both the increment in the specific surface area and the addition of quartz sand and detritus can promote the thermal release induced by low- temperature oxidation of heavy oil, thereinto, the specific surface effect of medium gives a small contribution to the thermal release of low-temperature oxidation.
Jingjun PAN , Wanfen PU , Shuai ZHAO , Zhati KANNI , Ruyan WANG , Yibo Li , Zheng WAN , Fei GU . Thermal effect caused by low-temperature oxidation of heavy crude oil under quasi-adiabatic condition[J]. Petroleum Reservoir Evaluation and Development, 2020 , 10(6) : 110 -114 . DOI: 10.13809/j.cnki.cn32-1825/te.2020.06.017
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