Study on Pressure-Bearing Patterns of Gel Plugging Agents in Multi-Scale Fractures

Gels, Journal Year: 2025, Volume and Issue: 11(4), P. 305 - 305

Published: April 21, 2025

In fractured reservoirs, fractures serve as both water channeling and oil flow channels. Because of the impact bottom coning, phenomenon becomes more problematic in middle late stages reservoir development. Furthermore, residual is limited to small-scale fractures. multi-scale fractures, conventional pressure-bearing pattern plugging agents ambiguous. This results low recovery, sweep efficiency from flooding, agent application efficiency. Until now, patterns related gel strength have not been clear. this paper, gelation performances temperature-resistant (TRG) samples with different elastic moduli were investigated. The modulus TRG was normalized by (G′) viscosity (G″). Subsequently, we carried out research on pressure TRGs. study revealed TRGs under A corresponding influence chart established, optimal surface function fitted using MATLAB nonlinear data fitting method. Finally, an experiment for characteristic out. rate evaluated based permeability reduction differential across core before after injection. a certain fracture node selected chart. at injection prior 14.29 Pa. 19.42 experimental showed that Pa effectively plugged remained stable over 90 days 53 KPa, resulting 58.7% improvement recovery compared flooding. However, it difficult plug efficiently, only enhanced 15.2%. primary aim work establish quantitative evaluation method gels (TRGs) used reservoirs. By introducing classification system correlating scale performance, bridges gap between laboratory evaluations field applications. provide practical design criteria contribute improving adaptability strategies harsh conditions.

Language: Английский

Anti-Polyelectrolyte and Highly Resilient Nanosphere-Cross-Linked Polyampholyte Hydrogels with Superior Salt-Tolerant Property for Conformance Control in Ultra-High-Salinity Reservoirs

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Language: Английский

Nanomaterials-based Pickering foams: Stabilization, morphology, rheology, and perspectives

Advances in Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 103561 - 103561

Published: May 1, 2025

Language: Английский