在断裂复杂区块,大断裂上往往派生次一级断裂,次一级断裂与主断裂相交,形成独立小断块。在油田开发中后期,这些小断块剩余油富集,是挖潜的重要有利部位。侧钻井具有投资少、风险低及完善井网的优势。在微小断块及断层边角剩余油挖潜方面,有很好的开发效果,更能获得很好的经济效益。 In complex faults, the faults often derive first-order faults on the large faults, and the second-order faults intersect the main faults to form independent small fault blocks. In the middle and later stages of oilfield development, the remaining oil in these small fault blocks is enriched and is an important favorable site for tapping potential. Side drilling has the advantages of low investment, low risk and perfect well pattern. In the tiny fault block and the residual corner of the fault tapping the potential, there is a good development results, more access to good economic benefits.