The Application of Multi-hydrogen Staged Acidizing Technology in M31-6 Well

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Ning, Mengmeng^1 ; Zhang, Lina^1 ; Che, Hang^1 ; Qiu, Shoumei^1 ; Xiu, Shuzhi^1 ; Xu, Zhengdong^1 ; Zhang, Bin^1 ; Wang, Xiaochao^1 ; Wang, Peng^1 ; Liu, Bingxiao^1 ; Kong, Weizhong^1 ; Cao, Jingzhi^1

Engineering Technology Research Institute of Huabei Oilfield Company, Renqiu, Hebei, China^1

关键词: Different layers;    Effective radius;    Fault blocks;    Low permeability sandstone;    Low-permeability sandstone reservoirs;    Piece-wise;    Reservoir permeability;    Secondary pollution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/2/012067/pdf
DOI  :  10.1088/1755-1315/186/2/012067

来源: IOP

【 摘 要 】

M31 fault-block with reservoir permeability at around 9 md, belongs to low permeability reservoir with more strata and poor water absorption. Its daily water injection is 10 m3 per day and pressure is 30Mpa, and 10 m3 per day. Oil wells with low yield and low liquid badly need stratum energy. Aiming at this kind of low permeability sandstone reservoir, it researched piecewise hydrogen acid acidification technology to overcome the limitations of conventional mud acid acidification such as small effective radius and acidification sediment secondary pollution; also mutual influence between different layers was reduced. The implementation of the technology to M31-6 Wells got obvious effect of augmented injection, which has very important practical significance for the development of low permeability sandstone oil field and improves the ultimate recovery of oil field.