TY  - JOUR
AU  - Luo, Mei
AU  - Qin, Qirong
AU  - Wang, Shilin
AU  - Pan, Liao
AU  - Li, Hening
PY  - 2026
DA  - 2026/07/01
TI  - Water-Quality Thresholds and Formation-Damage Mechanisms during Water Injection in the Southern Area of the Deep Reservoir in the Gaoshangpu Oilfield
JO  - Journal of Geo-Energy and Environment
T2  - Journal of Geo-Energy and Environment
JF  - Journal of Geo-Energy and Environment
VL  - 2
IS  - 3
SP  - 230
EP  - 243
DO  - 10.62762/JGEE.2026.411772
UR  - https://www.icck.org/article/abs/JGEE.2026.411772
KW  - Gaoshangpu oilfield
KW  - low-porosity and low-permeability reservoir
KW  - water injection development
KW  - water quality optimization
KW  - formation damage
AB  - Injected water quality critically determines waterflooding effectiveness. The southern area of Gaoshen, a major deep reservoir block of the Gaoshangpu Oilfield (Jidong Oilfield), faces severe injection-well plugging, increased injection pressure, failing injection rates, and rapid production decline—necessitating urgent water-quality optimization. This study conducts reservoir sensitivity evaluation, injected water–reservoir compatibility analysis, and single-factor experiments on the effects of solid particles, suspended oil, and bacteria on permeability. Results show: (1) The reservoir exhibits moderately strong water sensitivity (critical salinity: 6000--10000~mg/L); current injected-water salinity (1499.34~mg/L) is far below this threshold, which disrupts the ionic balance and causes clay swelling—one of two dominant, co-occurring damage mechanisms alongside solid-particle plugging. (2) Suspended-particle median diameter (8.145~$\mu$m) far exceeds the recommended limit ($\le$3~$\mu$m). For this low-porosity, low-permeability reservoir (average permeability: 28.9--39.4$\times$10\(^{-3}\)~$\mu$m\(^{2}\); pore-throat radius typically
SN  - 3069-3268
PB  - Institute of Central Computation and Knowledge
LA  - English
ER  - 

@article{Luo2026WaterQuali,
  author = {Mei Luo and Qirong Qin and Shilin Wang and Liao Pan and Hening Li},
  title = {Water-Quality Thresholds and Formation-Damage Mechanisms during Water Injection in the Southern Area of the Deep Reservoir in the Gaoshangpu Oilfield},
  journal = {Journal of Geo-Energy and Environment},
  year = {2026},
  volume = {2},
  number = {3},
  pages = {230-243},
  doi = {10.62762/JGEE.2026.411772},
  url = {https://www.icck.org/article/abs/JGEE.2026.411772},
  abstract = {Injected water quality critically determines waterflooding effectiveness. The southern area of Gaoshen, a major deep reservoir block of the Gaoshangpu Oilfield (Jidong Oilfield), faces severe injection-well plugging, increased injection pressure, failing injection rates, and rapid production decline—necessitating urgent water-quality optimization. This study conducts reservoir sensitivity evaluation, injected water–reservoir compatibility analysis, and single-factor experiments on the effects of solid particles, suspended oil, and bacteria on permeability. Results show: (1) The reservoir exhibits moderately strong water sensitivity (critical salinity: 6000--10000~mg/L); current injected-water salinity (1499.34~mg/L) is far below this threshold, which disrupts the ionic balance and causes clay swelling—one of two dominant, co-occurring damage mechanisms alongside solid-particle plugging. (2) Suspended-particle median diameter (8.145~\$\mu\$m) far exceeds the recommended limit (\$\le\$3~\$\mu\$m). For this low-porosity, low-permeability reservoir (average permeability: 28.9--39.4\$\times\$10\(^{-3}\)~\$\mu\$m\(^{2}\); pore-throat radius typically},
  keywords = {Gaoshangpu oilfield, low-porosity and low-permeability reservoir, water injection development, water quality optimization, formation damage},
  issn = {3069-3268},
  publisher = {Institute of Central Computation and Knowledge}
}