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
周星光 1时维才 1余晓玲1
作者信息
- 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
- 折叠
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CO2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CO2驱泡沫封窜工艺,在S24井成功应用,并取得阶段增油效果.
Abstract
Aiming at the problem of gas channeling during CO2 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 CO2 displacement foam sealing channeling process,the injection process,such as slug combination,is optimized.The CO2 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
CO2驱/泡沫封窜/高温低渗/江苏油田Key words
CO2 flooding/foam sealing channeling/high-temperature and low-permeability/Jiangsu Oilfield引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据