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在水平井作业中,常常由于地质调整或井漏、井塌等井下复杂情况,需要对井眼进行注水泥塞回填侧钻施工。本文对于侧钻施工中的要求和技术难点进行分析,针对鄂尔多斯盆地大牛地气田和杭锦旗区块目前采取的两种裸眼侧钻工艺进行分析,对于不同地层采取相适应的侧钻方法,有效的提高了侧钻施工效率。
In horizontal well operations, it is often necessary to carry out cement injection backfill side-hole construction of the wellbore due to the complicated geological conditions such as geological adjustment or well downhole and well collapse. In this paper, the requirements and technical difficulties in sidetrack drilling are analyzed. According to the analysis of two open-hole side-drills currently being carried out by Daniudi gas field and Hangjinqi block in Ordos Basin, the lateral drilling method adapting to different strata is effective Improve the sidetrack construction efficiency.