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胜利油田目前已进入特高含水开发阶段,剩余油在平面上高度分散,采用常规方法挖潜在适应性和经济效益等方面已很难适应油田开发的需要。而长期报废停井附近区域由于井网失控、水线绕流等原因,形成剩余油滞留区,成为剩余油挖潜的又一增长点。因此利用报废油井,开展了开窗侧钻水平井挖潜试验,并取得了良好的经济效益。试验表明,对于高含水油藏,在应用开窗侧钻水平井技术后,油藏的整体采收率得到了进一步提高,且有较大的剩余油挖潜空间,该技术在这类油藏上具有较好的推广应用价值。
Shengli Oilfield has now entered the development stage of ultra-high water-cut, the remaining oil is highly dispersed in the plane, it is difficult to adapt to the needs of oilfield development by using conventional methods to tap potential adaptability and economic benefits. In the area near the end of long-term decommissioning and stoppage, residual oil retention areas have been formed due to the uncontrolled well pattern and the flow around the water lines, which has become another growth point for tapping potential of residual oil. Therefore, the use of scrap oil wells, carried out sidetracking horizontal wells tapping potential test and achieved good economic benefits. Experiments show that for high water cut reservoirs, the overall recovery rate of oil reservoirs has been further improved and the remaining oil tapping potential space has been enlarged after the application of horizontal fenestration with fenestration, and the technology is applied to such reservoirs Has good promotion and application value.