有机硼体系在薄层压裂中的应用

Application of Organic Boron System in Fracturing of Thin Layer

储隔层应力差较大的薄层压裂过程中,缝高、缝宽相对于厚层变小。在相同排量下,压裂液在薄层裂缝中流动剪切速率高,粘度低。有机硼体系既能有效提高裂缝中压裂液粘度,还可有效降低井筒及孔眼摩阻,在吐哈油田得到了较好的应用。

During fracturing of thin layer with high stress difference of reservoir and restraining barrier, height and width of fracture will decrease compared to thick layer. At the same discharge, flow shear rate of fracture fluid is high in the fracture of the thin layer, and its viscosity is low. Organic boron system can not only effectively increase viscosity of fracture fluid in fracture, but also reduce frictional resistance in borehole and perforation hole, which has got a good application in Tuha oilfield.