物探测井在柬埔寨水井施工中的应用
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摘要
以《中国援助柬埔寨乡村供水项目》水井施工为例,介绍了综合物探测井在解释含水层的重要性;结果表明,自然伽马测井曲线均为正向偏移形成的异常、自然电位均为负异常,视电阻率的均表现为低阻异常,利用这三种曲线组合能很好的解释含水层。对于隔水层,三种曲线均表现为正异常,而与含水层对比有很好的极差响应。根据测井解释成果与地质水文资料结合分析,主要的含水层为基岩裂隙水为主,其次为第四系与基岩接触带,本文分别解释了具有代表性磅清扬省CACW-61钻孔和磅士卑省CACW-379钻孔,为后续水井成井提供科学依据。
By the example of construction of wells of the "China's assistance to Cambodian rural water supply project", this paper has a discussion on the importance of comprehensive geophysical logging to explanation of aquifer. The test results show that all of the natural gamma-ray curveand spontaneous-potential curve show negative anomalies, whereasthe apparent resistivity shows a positive anomaly. These are characteristic of aquifer. All of the three curves for the aquifuge show positive anomalies, but they have very poor response to the aquifer. According to the logging interpretation, geological and hydrological data, water in the main aquifer is dominated by bedrock fissure water, followed by the water between the Quaternary and bedrock. The representative boreholes CACW-61 in Kompong Chhnang and CACW-379 in Kompong Speu are explained respectively, which provides scientific basis for the subsequent exploration of wells.
By the example of construction of wells of the "China's assistance to Cambodian rural water supply project", this paper has a discussion on the importance of comprehensive geophysical logging to explanation of aquifer. The test results show that all of the natural gamma-ray curveand spontaneous-potential curve show negative anomalies, whereasthe apparent resistivity shows a positive anomaly. These are characteristic of aquifer. All of the three curves for the aquifuge show positive anomalies, but they have very poor response to the aquifer. According to the logging interpretation, geological and hydrological data, water in the main aquifer is dominated by bedrock fissure water, followed by the water between the Quaternary and bedrock. The representative boreholes CACW-61 in Kompong Chhnang and CACW-379 in Kompong Speu are explained respectively, which provides scientific basis for the subsequent exploration of wells.
引文
[1]彭德滨.地球物理测井在水文地质与工程地质钻探中的应用[J].地下水1996,18(2);
[2]黄登龙,蒋新生.赞比亚水文地质特征及钻井成井工艺,江西煤炭科技,2005,1;
[3]葛亮涛,叶贵均,高洪烈.中国煤田水文地质学[M].北京:煤炭工业出版社,2001.
[4]尉中良,皱长春.地球物理测井[M].北京.地质出版社.2005.
[5]田贵发,潘语录,栾安辉.应用自然电位测井资料解释鱼卡煤田含水层[J].中国煤田地质,2007(2).
[6]许有金.利用电测井方法确定含水层及相互补给关系[J].中国煤田地质,200821(12).
[7]郭崇光,李振栓,赵莹.水文地球物理方法及应用[M].北京:煤炭工业出版社,2006.
[8]陈天慧.基于电测井方法的咸淡水含水层划分研究[J].工程勘查,2013,41(11):89-98.
[9]李立亮,阮传侠.PSJ-2数字测井仪在水文地质勘查中的应用[J].中国煤炭地质,2010,22(S1):90-91.
[10]徐玉琳.江苏省南通市深层含水系统地下水水质咸化特征及成员分析[J].中国地质灾害与防治学报,2002,12:45-49.
[2]黄登龙,蒋新生.赞比亚水文地质特征及钻井成井工艺,江西煤炭科技,2005,1;
[3]葛亮涛,叶贵均,高洪烈.中国煤田水文地质学[M].北京:煤炭工业出版社,2001.
[4]尉中良,皱长春.地球物理测井[M].北京.地质出版社.2005.
[5]田贵发,潘语录,栾安辉.应用自然电位测井资料解释鱼卡煤田含水层[J].中国煤田地质,2007(2).
[6]许有金.利用电测井方法确定含水层及相互补给关系[J].中国煤田地质,200821(12).
[7]郭崇光,李振栓,赵莹.水文地球物理方法及应用[M].北京:煤炭工业出版社,2006.
[8]陈天慧.基于电测井方法的咸淡水含水层划分研究[J].工程勘查,2013,41(11):89-98.
[9]李立亮,阮传侠.PSJ-2数字测井仪在水文地质勘查中的应用[J].中国煤炭地质,2010,22(S1):90-91.
[10]徐玉琳.江苏省南通市深层含水系统地下水水质咸化特征及成员分析[J].中国地质灾害与防治学报,2002,12:45-49.