井下高承压水绕流钻孔套管固设技术
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摘要
针对井下水文长期观测孔钻孔高承压水绕流问题,根据钻孔地质条件,对绕流原因进行分析研究,提出了套管静压腔内落沙方法,先分层段充填绕流裂隙通道并保护已钻揭含水层,再采用浓浆对套管与孔壁间的环形空隙进行动水条件下的控压、控量连续注浆固管,达到了高压动水状态下钻孔套管安全固设的目的,并满足水文长期观测孔的技术质量要求。
Aiming at the streaming problem of the long-term hydrological observation drilling, according to drilling geological conditions, analyzed the streaming reason, put forward the dropping sand method in the static pressure cavity of borehole casing pressure sand cavity, which firstly filled the streaming fracture passage to protect the drills through the aquifer, then fixed the borehole casing by grouting to fill the annular space between the casing and the hole wall under the dynamic water condition, get the fixing borehole casing purpose under the high pressure moving water condition, and meet the technical requirements of quality long-term hydrological observation hole.
Aiming at the streaming problem of the long-term hydrological observation drilling, according to drilling geological conditions, analyzed the streaming reason, put forward the dropping sand method in the static pressure cavity of borehole casing pressure sand cavity, which firstly filled the streaming fracture passage to protect the drills through the aquifer, then fixed the borehole casing by grouting to fill the annular space between the casing and the hole wall under the dynamic water condition, get the fixing borehole casing purpose under the high pressure moving water condition, and meet the technical requirements of quality long-term hydrological observation hole.
引文
[1]于轲,张友明,杨平,等.井下钻孔漏水处理方法及预防措施[C]//.山东省煤矿防治水技术研讨会.2008.
[2]李波,焦天彪,王长柱,等.漏水钻孔的封堵技术[J].山东煤炭科技,2003(2):55-56.
[3]王灿平,刘忠勤,祝仰奎.井下高水压钻孔漏水封堵技术[J].山东煤炭科技,2007(1):11-12.
[4]李朋,郭冬兰,张强.大水量、高水压条件下封堵井下漏水钻孔[J].山东煤炭科技,2010(6):198-198.
[5]张同俊.井下高承压水漏水钻孔壁间动态注浆处理技术[J].山东煤炭科技,2009(6):151-153
[6]田茂虎.特殊钻孔启封的实践和认识.山东煤炭科技[J],2005(增):59-60.
[2]李波,焦天彪,王长柱,等.漏水钻孔的封堵技术[J].山东煤炭科技,2003(2):55-56.
[3]王灿平,刘忠勤,祝仰奎.井下高水压钻孔漏水封堵技术[J].山东煤炭科技,2007(1):11-12.
[4]李朋,郭冬兰,张强.大水量、高水压条件下封堵井下漏水钻孔[J].山东煤炭科技,2010(6):198-198.
[5]张同俊.井下高承压水漏水钻孔壁间动态注浆处理技术[J].山东煤炭科技,2009(6):151-153
[6]田茂虎.特殊钻孔启封的实践和认识.山东煤炭科技[J],2005(增):59-60.