20世纪90年代以来机械防砂技术的新进展

防砂对于出砂油藏有着重要意义，防砂的成功与否直接关系到油气藏是否能够正常开发。随着新科技和新材料的不断发展和完善，机械防砂技术也获得了日新月异的进展。特别是20世纪90年代以来各种新的防砂技术在油田现场应用均取得了良好的效果。论述了20世纪90年代以来机械防砂技术的现状及发展趋势。

The Latest Development in the Tech. of Mechanical Desanding since 1990s

Sand control has important meanings to sanding formation. It can affect the exploitation directly. Sand control technology today includes four sorts: mechanical sand control, chemical sand control, arch sand control and coking sand control. But mechanical are applied the most abroad, the principle is blocking sand in physical way. It was used from the early 20 century, with the development of new technology and new material, mechanical sand control are promoted greatly. From the 1990s, many kinds of new sand control method are used in oil field, and get satisfying result.