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通过对南襄盆地泌阳凹陷页岩油气藏缝网压裂改造常用的滑溜水、GW-27线性胶、羟丙基胍胶线性胶三种压裂液体系从体系选择、配方及作用机理的比较,以及对压裂施工现场数据的分析,确定了压裂液体系摩阻梯度大小顺序、复配比例和压裂液体系最低摩阻时增稠剂的质量分数,找到了其适用范围。运用此项技术对泌页HF1井改造后,储层得到了改善,增产效果显著。
Based on the selection, formulation and mechanism of the three kinds of fracturing fluid systems commonly used in the seam fracturing of shale reservoirs in the Biyang depression of Nanxiang Basin, such as slickwater, GW-27 linear gel and hydroxypropyl guar linear gel, Compared with the fracturing fluid construction site data analysis to determine the order of the fracturing fluid friction gradient, compounding ratio and the lowest friction fracturing fluid thickener mass fraction, to find its scope of application. Using this technology to improve the secretion HF1 well, the reservoir has been improved and the stimulation effect is remarkable.