西南石油大学学报（自然科学版）2023，Vol.45Issue(6)：104-112,9.DOI:10.11885/j.issn.1674-5086.2021.12.06.03
高渗砂岩油藏钻完井一体化储层保护技术
Integrated Pay Zone Protection Technologies in High-porosity &High-permeability Reservoirs of Bohai Bay
摘要
Abstract
As a representative of high-porosity and high-permeability sandstone reservoirs in the extremely shallow sea area of Bohai Bay,Zhaodong Oilfield is faced with the problems of low degree of diagenesis,loose cementation,medium to strong water sensitivity,medium to weak velocity sensitive damage,and is easy to be damage by external solid invasion.In order to maximize the potential of the reservoir,reduce the damage of the reservoir and realize the protection of the reservoir,based on the concept of integration,the KCl polymer water-based drilling fluid system and the non-solid water-based FLO-PRO reservoir drilling fluid system were tested through the indoor recovery of cuttings and core permeability recovery experiments,and it was found that the former could reduce the shale expansion rate by 81.40％and the core permeability by 88.21％,and the latter could restore the reservoir permeability to 100.00％.In practice,the cementing operation uses a low-density,low-temperature,ultra-early,and high-strength cement slurry system.Before the completion operation,the borehole was cleaned by a combination of physical and chemical methods;Clean KCl brine that has undergone two stages of filtration is used as the completion fluid during completion operations.The integrated reservoir protection technology effectively reduces the damage of external solids to the reservoir in all aspects of drilling and completion operations,maximizes the reservoir protection in the whole process,ensures safe and efficient well construction,reduces complex accidents and non-production time,and realizes the sustainable and profitable development of different water-cut stages of the oilfield..关键词
油气储层保护/一体化/屏蔽暂堵/自破胶/两级过滤Key words
pay zone protection/integrity/screening temporary plugs/gel-breaking/two-stage filtration分类
能源科技引用本文复制引用
赵平起,王贺强,郭海涛,马翠岩,王子毓..高渗砂岩油藏钻完井一体化储层保护技术[J].西南石油大学学报（自然科学版）,2023,45(6):104-112,9.基金项目
国家自然科学青年基金(41902141) （41902141）
中央高校基本科研业务费专项基金(E1E40403) （E1E40403）
