LAB RESEARCH OF NITROGEN AND RICH GAS INJECTION IN XI-52VOLATILE RESERVOIR

doi:10.3863/j.issn.1000-2634.2001.06.14

Abstract

Abstract:

The main research of this paper includes evaluation of nitrogen and hydrocarbon gas injection in real long core, expansion test, slim tube test and flooding efficiencies of different gases. All the experiments are conducted upon long real formation core from Ke-233 well by using synthetic fluids of separate oil and gas samples from Ke-428 well compounded at bubble point pressure. The results show that it is harder for hydrocarbon gas with higher expansion ability to increase bubble point pressure than nitrogen. But both selected hydrocarbon gas and nitrogen can not get miscible with oil at present formation pressure. It is also demonstrated in the core test that with the richer hydrocarbon gas and higher injection pressure, the ultimate displacement efficiency is more obvious. Compared with the present depletion production, nitrogen injection can increase the efficiency by 6.08%, rich gas injection by 18.8%-21.31%.The results indicate a strong potential for gas injection.

Key words: reservoir, hydrocarbon injection, nitrogen injection, experimental evaluation

CLC Number:

TE357.45

GUO Ping LIU Jian-yi LI Shi-lun XIONG Yu ZHOU Zhen ZHAO Xiao-feng LI Yu-guan ZHANG Xing-lin. LAB RESEARCH OF NITROGEN AND RICH GAS INJECTION IN XI-52VOLATILE RESERVOIR[J]. 西南石油大学学报(自然科学版), 2001, 23(6): 44-47.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1000-2634.2001.06.14

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2001/V23/I6/44

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LAB RESEARCH OF NITROGEN AND RICH GAS INJECTION IN XI-52VOLATILE RESERVOIR

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