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分析了竖井钻井的反循环洗井原理及影响洗井效果的主要因素。以92型钻机为例,计算了钻井过程中洗井所需的洗井液循环量,确定了风管埋深,并对比两种风量、风压的计算方法,给出了600m深井洗井参数的最佳匹配。
The principle of reverse circulation well washing and the main factors affecting the well flushing efficiency are analyzed. Taking the 92 drilling rig as an example, the circulating volume of flushing fluid required for well flushing during drilling is calculated and the depth of air duct is determined. Comparing the calculation methods of two wind volumes and wind pressures, the well logging parameters The best match