用于防砂的高渗透水泥浆体系

A high permeable cement slurry system for sand control

研制出一种能增加水泥石渗透率的增渗剂S-1和KQ-C。S-1是以复杂的天然油溶性有机物为原料自行进行化学改性的固体产物,KQ-C是经过钝化处理的铝粉体系,它可和水泥浆中的碱性物质反应生成氢气的微小气泡,使得原来S-1与S-1不相连的地方,因气泡的产生而相连。并在水泥浆中辅以石英砂、中试纤维、微硅。获得了具有良好浆态性质的防砂用高渗透水泥浆,凝固后的水泥石抗压强度达到7—9MPa。经一定处理后渗透率达到0.5—0.9μm^2。

Using permeable cement slurry for sand control is based on extensive practices of chemical sand control technology. Cement slurry is squeezed to the desired location to form a barrier for sand migration, a permeability increasing additive, together with quarts sand, fibers, and micro silicon are added in the cement slurry. The performance of cement slurry is excellent, its compression strength reaches 7-9 MPa after WOC, and its permeability reaches 0.5-0.9 μm2.