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jiao lin suan na xi jing
Author(s): 
Pages: 58
Year: Issue:  6
Journal: Hydrogeology and Engineering Geology

Keyword:  孔壁焦磷酸钠悬浮体压缩空气泥浆洗井液颗粒泥皮活塞式空压机勘探;
Abstract: <正> 焦磷酸钠(Na4P2O7·10H2O)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Ca2+,Mg2+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,Mg2+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
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