Novel CO2 displacement and huff-puff system and method

• Main Authors: LEE KEUK-SANG, LI CHAO, ZHOU WENBIN, ZHANG JIAN, SUN JING, ZHAO QINGQUAN, YUAN HAOWEI, ZHANG MAOYUAN, GUO JIANZHONG
• Format: Patent
• Language: Chinese; English
• Published: 15.08.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a novel CO2 displacement and huff-puff system and a novel CO2 displacement and huff-puff method. The system disclosed by the invention can be used for carrying out simulation researches such as carbonization water displacement, gas injection exploitation, water-gas alternate injection displacement and CO2 huff and puff of oil and gas reservoirs. The displacement or huff-puff development effect of various gases on underground oil and gas reservoirs under the conditions of formation temperature and pressure is researched, and the displacement or huff-puff development effect of the gases, steam or carbonized water under different conditions is analyzed; and influence rules of sensitive factors such as displacement amount, displacement, temperature, pressure and the like on the displacement development effect and the throughput development effect are obtained. The operation control speed is high, the efficiency is high, errors are small, and system pipelines are convenient to clean; the de