Condensate oil and gas reservoir air injection development underground combustion state analysis method and device

• Main Authors: JIANG YOUWEI, ZHAO FANG, ZHANG XIALIN, QI ZONGYAO, GUAN WENLONG, WANG HONGZHUANG, XI CHANGFENG, WANG BOJUN, SHI LANXIANG, DU XUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS

The invention discloses a condensate oil and gas reservoir air injection development underground combustion state analysis method and device, and the analysis method comprises the steps: obtaining the production gas-oil ratio of a production well and the content of methane, nitrogen, oxygen, carbon dioxide and carbon monoxide components in the produced gas when air injection development is replaced after condensate oil and gas reservoir selective depletion exploitation is finished; analyzing a production stage of gas condensate gas reservoir air injection development according to the production gas-oil ratio and the methane component content; and analyzing the combustion state of the stratum in the production stage according to the content of the nitrogen, the oxygen, the carbon dioxide or the carbon monoxide in the production stage. According to the characteristics of the condensate oil and gas reservoir, in combination with indoor experiments and digital-analog studies, it is determined that air injection d