Composition and Evaluation of MFC-GM Plugging Agent for SeBei Gas Field

Abstract:

To overcome the shorting of inorganic gelatinous such as cement in plugging jobs, MFC-GM plugging agent is developed. MFC-GM is composed of 20% network building material, 70% gelatinous material, 9% activators, and 1% technologic behavior regulator and is used in aqueous slurries with water to cement ratio 1:1.4-1.8. The results of laboratory performance properties evaluation show that the depth of MFC-GM slurries squeezed into sandpack is far less, and the plugging strength of MFC-GM is, about 25MPa, far higher than G grade oilwell cement. This phenomenon is explained in terms of the functions of ingredients and the structure. MFC-GM can be used for plugging perforations and water producing zones, processing following characteristics: plugging radius is less than 0.8m and adjustable; initial setting time in rang 2-6 hours adjustably. MFC-GM plugging agent can meet the needs of unconsolidated sand gas reservoirs and improve plugging effect of gas well water-flooded layer and leakage zone.

• Periodical: Advanced Materials Research (Volumes 753-755)
• Pages: 124-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.753-755.124
• Online since: August 2013
• Authors: Yong Li, Ying Lan Jia, Qi Han Zhang, Li Hui Zhang
• Keywords: Compatibility, Plugging Agent, Plugging Intensity, Resident Ability, SeBei Gas Field, Superfine Oilwell Cement

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