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发明公开
CN103867147A 煤层气井平行管不压井排煤粉系统 无效 - 驳回

煤层气井平行管不压井排煤粉系统
摘要：
本发明公开了一种煤层气井平行管不压井排煤粉系统，包括：地面部分和井下部分，地面部分包括固液分离装置（12）、泵车（1）、平行管自密封装置（15）、平行管井口装置（14）、鼓风机（2）和煤层气回收装置（3），井下部分包括第一油管（7）、第二油管（18）和平行管水力射流冲煤粉装置（8），地面部分是该煤层气井平行管排煤粉系统的操控机构，井下部分是该煤层气井平行管排煤粉系统的执行机构。属于煤层气井及油气田开发技术领域，还公开了一种使用上述系统的煤层气井平行管柱排煤粉方法。本发明可实现连续排煤粉作业，提高目前修井作业的效率，并且在作业过程中可保证井内煤层气压力的稳定以及作业的安全性。
摘要（英）：

The invention discloses a parallel-tube snubbing pulverized coal discharging system for a coal-bed gas well and belongs to the technical field of coal-bed gas well and oil-gas field development. The system comprises a ground portion and a down hole portion. The ground portion comprises a solid-liquid separation unit (12), a pump truck (1), a parallel-tube self-sealing unit (15), a parallel-tube well head unit (14), an air blower (2) and a coal-bed gas recovery unit (3). The down hole portion comprises a first oil tube (7), a second oil tube (18) and a parallel-tube hydraulic jet pulverized coal flushing unit (8). The ground portion is a control mechanism of the system, and the down hole portion is an execution mechanism of the system. The invention further discloses a parallel-tube snubbing pulverized coal discharging method for the coal-bed gas well, which uses the system. By means of the system, continuous pulverized coal discharging can be achieved, the current well repair efficiency is improved, and the stability of pressure of coal-bed gas in the well and the operation safety can be guaranteed during the operation.

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