PZJ型多功能冲洗液的室内研究

在钻井施工中,钻井液形成的泥饼直接影响后期的固井质量,如何有效地冲刷泥饼,提高界面的胶结能力,对提高固井质量至关重要。在前期对复配型表面活性剂的冲洗效果及其作用机理研究的基础上,经室内实验,确定了PZJ多功能冲洗液配方。实验结果表明:该冲洗液具有良好的流变性和耐温性,接近于牛顿型流体;对低固相泥浆、油基泥浆的冲洗效率均达到了88%以上,同时使界面胶结强度提高50%以上。通过扫描电镜,对胶结强度提高原因进行了微观分析。

Research on Performance of PZJ multifunctional Flushing Fluid

In the drilling construction, the mud cake formed by drilling directly affect the cementing quality latterly, how to effectively wash mud cake and improve the interface cementation ability is very important to improve the cementing quality In this paper, based on the preliminary results of the washing effect of complex matches surfactant and its mechanism of action research, through the indoor experiments, the PZJ multi-function washing fluid formula was determined. The experimental results show that the flushing fluid has good rheological property and temperature resistance, which is closed to the Newtonian fluid; For low solid mud and oil-based mud, the flushing efficiency are reached more than 88%, at the same time the interface cementation strength is increased by more than 50%., The microscopic analyses were made for the reason of improved interface cementation ability by scanning electron microscope.