高温低渗油藏二氧化碳泡沫封窜工艺研究与应用  

Research and application of carbon dioxide foam channeling sealing technology in high-temperature and low-permeability reservoirs

作　　者：周星光 时维才[1] 余晓玲[1] ZHOU Xingguang;SHIWeicai;YU Xiaoling(Petroleum Engineering Technology Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司石油工程技术研究院,江苏扬州225009

出　　处：《复杂油气藏》2024年第1期118-122,共5页Complex Hydrocarbon Reservoirs

摘　　要：针对江苏油田二氧化碳注入过程中发生气窜的问题,根据油藏特点研发了无氟环保型气溶性泡沫封窜剂。通过岩心物模实验,进行泡沫封窜体系、注入速度、注入量、最佳气液比等工艺参数优化,并结合国内外CO_(2)驱泡沫封窜工艺矿场实践经验,对段塞组合等注入工艺进行优化,形成适合江苏油田的CO_(2)驱泡沫封窜工艺,在S24井成功应用,并取得阶段增油效果。Aiming at the problem of gas channeling during CO_(2) injection in Jiangsu Oilfield,a fluorine-free and environmentally-friendly gas-soluble foam channeling sealing agent was developed according to the characteristics of the reservoir.Core modeling experiments optimized the process parameters such as foam sealing channeling system,injection rate,injection amount,optimal gas-liquid ratio,etc.Combined with the domestic and foreign practical experience of the CO_(2) displacement foam sealing channeling process,the injection process,such as slug combination,is optimized.The CO_(2) flooding foam sealing channeling technology suitable for Jiangsu Oilfield was successfully applied in well S24,and the oil increase effect was achieved at a stage.

关 键 词：CO_(2)驱 泡沫封窜 高温低渗 江苏油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]