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焦磷酸钠(Na_4P_2O_7·10H_2O)是一种农化肥。呈白色粉末状,易溶于水,溶水后有滑润感呈碱性,有强烈的洗涤作用。它可降低水粘度,可与泥浆中的Ca~(2+),Mg~(2+)离子进行络合。在洗井过程中由于焦磷酸钠溶液对孔壁泥皮的渗透与Ca~(+2),Mg~(2+)离子的络合作用,使孔壁松软膨胀,减弱了泥皮颗粒间的结合力。在分散作用下成为悬浮体,经洗井活塞式空压机的压缩空气的反覆振荡,使焦磷酸钠溶液与孔壁泥皮
Sodium pyrophosphate (Na_4P_2O_7 · 10H_2O) is an agricultural chemical fertilizer. Was white powder, soluble in water, water after the slippery feel alkaline, with a strong washing effect. It can reduce the viscosity of water and can complex with Ca ~ (2 +) and Mg ~ (2+) ions in mud. During the process of well washing, the pore wall softens and expands due to the complexation of Ca2 + and Mg2 + ions by osmosis of the pore wall mud in sodium pyrophosphate solution, Binding force. In the role of decentralization as a suspension, the piston air compressor washings the compressed air repeatedly oscillated so that sodium pyrophosphate solution and pore wall mud