Screening and Evaluation of Microorganism Species in Oil Recovery in Ji 45 Block

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Lei, X.Y.^1 ; You, J.^1 ; Li, Y.B.^1 ; Wang, R.^1 ; Shan, X.K.^2 ; Zhou, X.^3

Research Institute of Oil Production Technology, Huabei Oilfield Company of PetroChina, Renqiu, He Bei Province

062552, China^1

Research Institute of Exploration and Development, Huabei Oilfield Company of PetroChina, Renqiu, He Bei Province

062552, China^2

Operation Division, Huabei Oilfield Company of PetroChina, Renqiu, He Bei Province

062552, China^3

关键词: Degradation effect;    Development effect;    Emulsifying property;    Evaluation experiments;    Oil recoveries;    Physical simulation experiment;    Reservoir conditions;    Viscosity reduction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012080/pdf
DOI  :  10.1088/1755-1315/81/1/012080

来源: IOP

【 摘 要 】

In order to improve the development effect of Ji 45 block and slow down the nature decline, the bacteria evaluation experiment was carried out. Six strains were screened and their adaptability, emulsifying property and viscosity reduction were evaluated. The results showed that the strains of CYY0807 and CYY0810 have significant effect on the oil under reservoir conditions. The viscosity reduction rate reached 46.9% when the two strains were compounded. The gas chromatography results indicated that the compounded strains have good degradation effect on crude oil. The light components of crude oil increased and the heavy constituent reduced. According to the physical simulation experiment, the recovery was 9.2% under Ji 45 reservoir conditions by using the compounded strains.