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根据对碳酸盐岩储层岩性、物性和敏感性的分析，室内优化了一套保护裂缝性碳酸盐岩储层的ＭＭＨ正电胶钻井完井液，并对碳酸盐储层的水锁效应及应力敏感性进行了评价。室内及现场实际井浆的分析结果表明，该配方对裂缝性碳酸盐岩储层具有良好的保护效果。文中还对ＭＭＨ 正电胶钻井液保护裂缝性储层的机理进行了分析。
Based on the analysis of lithology, physical properties and sensitivity of carbonate reservoirs, a set of MMH positive-electrode gel completion fluids for the protection of fractured carbonate reservoirs were optimized indoors, Water lock effect and stress sensitivity were evaluated. The analysis results of the actual well in the laboratory and in the field show that the formula has a good protective effect on fractured carbonate reservoirs. The paper also analyzes the mechanism of MMH positive gel drilling fluid to protect fractured reservoirs.