介绍了侧钻井扩孔施工工艺，探讨了用扩孔技术减少侧钻井油层损害的机理。
The paper introduces the reaming technology of lateral drilling, discusses the mechanism of reducing reservoir damage by using reaming technique.
指出了在油层改造过程中可能引起油层损害的因素，针对这些因素提出了相应的改善方案。
The factors which may cause reservoir damage during modifying are pointed out, and corresponding improving plans are proposed accordingly.
试验表明，该堵剂对水层有较好的堵塞效果，不损害油层和油永混合层。
The test results showed that this agent had a good plugging effect for water layer and no damage for oil layer and oil-water mixed layer.
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