缝网压裂液体系现场应用比较——以南襄盆地泌阳凹陷页岩油气藏压裂改造为例

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。

Comparison Study of Fracturing Fluid System Applied in Fracture Network --Biyang Pit Nanxiang Basin Shaly Oil-Gas Reservoir

This paper analyzes the fracturing fluid system, including quick water, GW-27 linear gum and HPG linear gum which are often used in network fracturing shaly oil-gas reservoir in terms of the choice, the formulation and the mechanism, field application （the sand volume, friction grads, the compound fracturing fluid system, minimum friction grads thickener concentration）. The application effect in Biyang pit Nanxiang basin shaly oil-gas reservoir ensures that the friction grads big-endian order and compound, ratio, and finds out its sphere application. The BYHF1 well was network fractured applying the technology, so the reservoir was improved, and the increase of oil is significant.